pushing to remote repo.

.gitignore

@@ -17,4 +17,7 @@ web-build/
 # The following patterns were generated by expo-cli
 
 expo-env.d.ts
-# @end expo-cli
+# @end expo-cliandroid
+android
+builds
+.env

README.md

@@ -1,4 +1,23 @@
-# Welcome to your Expo app 👋
+# PliWould - Measure And Price Sheet Good Merchandise
+
+Working behind the register at Habitat for Humanity ReStore I found sheet goods often came in partials.
+
+As a cashier, I would often have to determine the correct price for merchandise based on the area or length
+of products.
+
+Not being skilled in math, I found this process extremely stressful and would often get stuck and call over
+a manager to assist. Instead, I took it upon myself to find a solution.
+
+Hence, I created PliWould, an app that determines the cost of a product based on its dimensions.
+
+By default my store's prices are in the database. However, the prices are editable and you can add or remove
+products as needed.
+
+## Usage
+
+[[ TODO ]]
+
+# Development Docs
 
 This is an [Expo](https://expo.dev) project created with [`create-expo-app`](https://www.npmjs.com/package/create-expo-app).
 

__fixtures__/initialProducts.ts

@@ -2,11 +2,20 @@ import { Product } from "@/lib/product";
 
 export const products = [
     // Sheet goods
-    new Product(25, {l: 4, w : 8, u: "feet"}, { name: "Plywood" }),
+    new Product(25, {l: 4, w : 8, u: "ft"}, { name: "Plywood 1/4\"" }),
-    new Product(35, {l: 4, w : 8, u: "feet"}, { name: "MDF" }),
+    new Product(20, {l: 4, w : 8, u: "ft"}, { name: "Plywood 1/2\"" }),
-    new Product(40, {l: 4, w : 8, u: "feet"}, { name: "OSB" }),
+    new Product(25, {l: 4, w : 8, u: "ft"}, { name: "Plywood 3/4\"" }),
-    new Product(45, {l: 4, w : 8, u: "feet"}, { name: "Sheetrock" }),
+    new Product(5, {l: 4, w : 8, u: "ft"}, { name: "Thin Panel Board" }),
-    // Beams and trim
+    new Product(10, {l: 4, w : 8, u: "ft"}, { name: "Sheetrock" }),
-    new Product(1, {l: 0.50, u : "feet"}, { name: "trim 3 inches" }),
+    new Product(15, {l: 4, w : 8, u: "ft"}, { name: "OSB / Particle" }),
-    new Product(1, {l: 0.75, u : "feet"}, { name: "trim 3 inches" }),
+    new Product(20, {l: 4, w : 8, u: "ft"}, { name: "MDF" }),
+    new Product(15, {l: 4, w : 8, u: "ft"}, { name: "Pegboard" }),
+    new Product(5, {l: 3, w : 5, u: "ft"}, { name: "Cement" }),
+    // trim
+    new Product(1, {l: 0.50, u : "ft"}, { name: "trim <= 3 inches" }),
+    new Product(1, {l: 0.75, u : "ft"}, { name: "trim > 3 inches" }),
+    // siding
+    new Product(1, {l: 1, u: "ft"}, {name: "house siding"}),
+    new Product(1, {l: 1, u: "ft"}, {name: "metal / shelf bars"}),
+    new Product(0.5, {l: 1, u: "ft"}, {name: "gutter spouts"}),
 ];

app.json

@@ -19,7 +19,8 @@
       "adaptiveIcon": {
         "foregroundImage": "./assets/images/adaptive-icon.png",
         "backgroundColor": "#ffffff"
-      }
+      },
+      "package": "tech.damngood.PliWould"
     },
     "web": {
       "bundler": "metro",
@@ -31,6 +32,14 @@
     ],
     "experiments": {
       "typedRoutes": true
+    },
+    "extra": {
+      "router": {
+        "origin": false
+      },
+      "eas": {
+        "projectId": "bf9125c3-72d0-42a7-9480-74c4717e7ed3"
+      }
     }
   }
 }

app/(tabs)/_layout.tsx

@@ -1,37 +1,43 @@
 import { Tabs } from 'expo-router';
-import React from 'react';
 
 import { Colors } from '@/constants/Colors';
 import { useColorScheme } from '@/hooks/useColorScheme';
 import { TabBarIcon } from '@/components/navigation/TabBarIcon';
+import { Provider } from 'react-redux';
+import { products as fixtures } from "@/__fixtures__/initialProducts"
+import { setupStore } from '../store';
 
 export default function TabLayout() {
   const colorScheme = useColorScheme();
-
+  const store = setupStore({
+    products: fixtures.map(p => p.asObject)
+  });
   return (
-    <Tabs
+    <Provider store={store}>
-      screenOptions={{
+      <Tabs
-        tabBarActiveTintColor: Colors[colorScheme ?? 'light'].tint,
+        screenOptions={{
-        headerShown: false,
+          tabBarActiveTintColor: Colors[colorScheme ?? 'light'].tint,
-      }}>
+          headerShown: false,
-      <Tabs.Screen
+        }}>
-        name="index"
+        <Tabs.Screen
-        options={{
+          name="index"
-          title: 'Conversion',
+          options={{
-          tabBarIcon: ({ color, focused }) => (
+            title: 'Home Screen',
-            <TabBarIcon name={focused ? 'recording' : 'recording-outline'} color={color} />
+            tabBarIcon: ({ color, focused }) => (
-          ),
+              <TabBarIcon name={focused ? 'scale' : 'scale-outline'} color={color} />
-        }}
+            ),
-      />
+          }}
-      <Tabs.Screen
+        />
-        name="product-editor"
+        <Tabs.Screen
-        options={{
+          name="product-editor"
-          title: 'Products',
+          options={{
-          tabBarIcon: ({ color, focused }) => (
+            title: 'Products',
-            <TabBarIcon name={focused ? 'recording' : 'recording-outline'} color={color} />
+            tabBarIcon: ({ color, focused }) => (
-          ),
+              <TabBarIcon name={focused ? 'list' : 'list-outline'} color={color} />
-        }}
+            ),
-      />
+          }}
-    </Tabs>
+        />
+      </Tabs>
+    </Provider>
   );
 }

app/(tabs)/index.tsx

@@ -1,50 +1,10 @@
-import { Image, StyleSheet, Platform, ImageBackground } from 'react-native';
+import ProductCalculatorSelector from '@/components/ProductCalculatorSelector';
-
+import { SafeAreaView, Text, View } from 'react-native';
-import { SafeAreaView } from 'react-native-safe-area-context';
-import { MeasurementInput } from '@/components/LengthInput';
-import { setupStore, useAppDispatch } from '../store';
-import { selectProducts } from '@/features/product/productSlice';
-import { Product } from '@/lib/product';
-import { ProductTile } from '@/components/ProductTile';
-import { Measure, area, length } from 'enheter';
-
-export default function HomeScreen() {
-
-  const products = useAppDispatch(selectProducts);
-
-  function calculatePrice() {
-
-  }
-
-  const selectProduct = (product : Product) => {
-
-  }
 
+export default function Convert () {
   return (
-    <SafeAreaView>
+    <View>
-      <MeasurementInput onMeasurementSet={calculatePrice} />
+      <ProductCalculatorSelector />
-      {products.map((product) => {
+    </View>
-        <ProductTile product={product} onProductSelected={selectProduct} />
+  )
-      })}
-    </SafeAreaView>
-  );
 }
-
-const styles = StyleSheet.create({
-  titleContainer: {
-    flexDirection: 'row',
-    alignItems: 'center',
-    gap: 8,
-  },
-  stepContainer: {
-    gap: 8,
-    marginBottom: 8,
-  },
-  reactLogo: {
-    height: 178,
-    width: 290,
-    bottom: 0,
-    left: 0,
-    position: 'absolute',
-  },
-});

app/(tabs)/product-editor.tsx

@@ -1,12 +1,7 @@
 import { Image, StyleSheet, Platform, ImageBackground } from 'react-native';
 
 import { SafeAreaView } from 'react-native-safe-area-context';
-import { MeasurementInput } from '@/components/LengthInput';
+import { ProductEditor } from '@/components/ProductEditor';
-import { setupStore, useAppDispatch } from '../store';
-import { selectProducts } from '@/features/product/productSlice';
-import { Product } from '@/lib/product';
-import { ProductTile } from '@/components/ProductTyle';
-import { Measure, area, length } from 'enheter';
 
 export default function HomeScreen() {
 

app/store.ts

@@ -3,14 +3,14 @@ import { configureStore } from '@reduxjs/toolkit';
 import { rememberReducer, rememberEnhancer } from 'redux-remember';
 import reducers from "@/features/product/productSlice"
 import AsyncStorage from '@react-native-async-storage/async-storage';
-import { Product, } from "@/lib/product";
+import { Product, ProductData, } from "@/lib/product";
 
 const rememberedKeys = ['products'];
 
 const rootReducer = reducers;
 
 export function setupStore(preloadedState = {
-    products: [] as Product[],
+    products: [] as ProductData[],
 }) {
     return configureStore({
         reducer: rememberReducer(reducers),

components/AreaInput.tsx

@@ -0,0 +1,61 @@
+import { MeasurementInput } from "./MeasurementInput";
+import { area_t, dimensions_t } from "@/lib/product";
+import { useState } from "react";
+import { StyleSheet, View } from "react-native";
+
+export type AreaInputProps = {
+    onMeasurementSet?: (area : dimensions_t) => any,
+    defaultValue?: area_t,
+    lengthLabel?: string,
+    widthLabel?: string,
+}
+
+export function AreaInput({onMeasurementSet, lengthLabel, widthLabel, defaultValue} : AreaInputProps) {
+
+    defaultValue = defaultValue || {l: 0, w: 0, u: "ft"}
+
+    const [area, setArea] = useState(defaultValue)
+
+    function doOnLengthSet(measurement : dimensions_t) {
+        setArea({
+            ...area,
+            l: measurement.l
+        });
+        onMeasurementSet && onMeasurementSet({
+            ...area,
+            l: measurement.l
+        });
+    }
+
+    function doOnWidthSet(measurement : dimensions_t) {
+        setArea({
+            ...area,
+            w: measurement.l
+        });
+        onMeasurementSet && onMeasurementSet({
+            ...area,
+            w: measurement.l
+        });
+    }
+
+    return (
+        <View style={styles.areaInputWrapper}>
+            <MeasurementInput
+                defaultValue={{l: area.l, u: area.u}}
+                onValueSet={doOnLengthSet}
+                label={lengthLabel}
+            />
+            <MeasurementInput
+                defaultValue={{l: area.w, u: area.u}}
+                onValueSet={doOnWidthSet}
+                label={widthLabel}
+            />
+        </View>
+    )
+}
+
+const styles = StyleSheet.create({
+    areaInputWrapper: {
+        flexDirection: "row"
+    }
+})

components/LengthInput.tsx

@@ -1,86 +0,0 @@
-import { Measure, Unit, length as en_length, area as en_area } from "enheter";
-import { useState } from "react";
-import { Button, StyleSheet, Text, TextInput, View } from "react-native";
-import { SafeAreaView } from "react-native-safe-area-context";
-
-export type t_length_unit = "foot" | "inch"
-export type mode = "length" | "area"
-
-export type LengthInputProps = {
-    onMeasurementSet?: (length: Measure<"length" | "area">) => any,
-    isArea?: boolean,
-}
-
-export function MeasurementInput(props: LengthInputProps) {
-
-    const [length, setLength] = useState(null as null | number);
-    const [width, setWidth] = useState(null as null | number);
-    const [unit, setUnit] = useState("foot" as t_length_unit);
-
-    function doSetLength(text: string) {
-        const value = parseFloat(text);
-        setLength(value);
-        if (!props.isArea) {
-            const len = en_length(unit, value)
-            props.onMeasurementSet && props.onMeasurementSet(len)
-        } else {
-            const en_unit = unit == "foot" ? "squareFoot" : "squareInch"
-            const ar = en_area(en_unit, value);
-            props.onMeasurementSet && props.onMeasurementSet(ar);
-        }
-    }
-
-    function doSetWidth(text: string) {
-        const value = parseFloat(text);
-        setLength(value);
-        const len = en_length(unit, value)
-        props.onMeasurementSet && props.onMeasurementSet(len)
-    }
-
-    return (
-        <SafeAreaView>
-            <View style={styles.inputRow}>
-                <TextInput
-                    keyboardType="number-pad"
-                    onTouchEnd={() => setLength(null)}
-                    value={length?.toString() || ""}
-                    onChangeText={doSetLength}
-                    style={styles.textInput}
-                />
-                {props.isArea &&
-                    (<TextInput
-                        keyboardType="number-pad"
-                        onTouchEnd={() => setWidth(null)}
-                        value={length?.toString() || ""}
-                        onChangeText={doSetWidth}
-                        style={styles.textInput}
-                    />)
-                }
-                <Text style={styles.valueHint}>{unit == "foot" ? "ft" : "in"}</Text>
-                <Button
-                    title="Ft"
-                    onPress={() => setUnit("foot")}
-                    color={unit === "foot" ? "blue" : "gray"}
-                />
-                <Button
-                    title="In"
-                    onPress={() => setUnit("inch")}
-                    color={unit === "inch" ? "blue" : "gray"}
-                />
-            </View>
-        </SafeAreaView>
-    )
-}
-
-const styles = StyleSheet.create({
-    textInput: {
-        flexGrow: 1,
-    },
-    inputRow: {
-        flexDirection: "row"
-    },
-    valueHint: {
-        color: "grey",
-        margin: 5,
-    }
-})

components/MeasurementInput.tsx

@@ -0,0 +1,62 @@
+import { dimensions_t, length_t } from "@/lib/product";
+import { Length } from "convert";
+import { useState } from "react";
+import { StyleSheet, Text, TextInput, View } from "react-native";
+
+export type t_length_unit = "foot" | "inch"
+
+export type MeasurementInputProps = {
+    onValueSet?: (d: dimensions_t) => any,
+    defaultValue: length_t;
+    label?: string,
+}
+
+export function MeasurementInput({onValueSet, defaultValue, label}: MeasurementInputProps) {
+
+    const [mValue, setMValue] = useState(defaultValue)
+    const defValue = Number.isNaN(defaultValue.l) ? 0 : defaultValue.l
+
+    function doOnValueSet(value : string) {
+        setMValue(mValue);
+        const iVal = parseFloat(value) || parseInt(value);
+        onValueSet && onValueSet({
+            ...defaultValue,
+            l: iVal,
+        })
+    }
+
+    const sDefValue = new String(defValue).valueOf()
+
+    return (
+        <View style={styles.inputWrapper}>
+            <TextInput
+                clearTextOnFocus={true}
+                defaultValue={sDefValue}
+                onChangeText={doOnValueSet}
+                inputMode='decimal'
+                style={styles.lengthInput}
+                aria-label={label || "Enter measurement"}
+                />
+            <Text style={styles.unitHints}>{mValue.u}</Text>
+        </View>
+    )
+}
+
+const styles = StyleSheet.create({
+    inputWrapper: {
+        alignItems: "flex-start",
+        flexDirection: "row"
+    },
+    unitHints: {
+      padding: 10,
+    },
+    lengthInput: {
+      borderWidth: 1,
+      borderRadius: 4,
+      borderColor: "grey",
+      padding: 4,
+      margin: 4,
+      fontSize: 25,
+      width: 100,
+    },
+})

components/PercentDamange.tsx

@@ -0,0 +1,44 @@
+import { StyleSheet, Text, TextInput, View } from "react-native";
+import Slider from '@react-native-community/slider';
+import { useState } from "react";
+
+type PercentDamageProps = {
+    onSetPercentage: (percent: number) => any;
+}
+
+export default function PercentDamage ({onSetPercentage} : PercentDamageProps) {
+    const [damage, setDamage] = useState(0);
+    function doOnChangeText (val : number) {
+        setDamage(val);
+        onSetPercentage(val / 100);
+    }
+    return (
+        <View style={styles.wrapper}>
+            <Slider
+                value={damage}
+                minimumValue={0}
+                maximumValue={100}
+                step={5}
+                onValueChange={doOnChangeText}
+                />
+            <Text style={styles.label}> {damage}% Damage</Text>
+        </View>
+    )
+}
+
+const styles = StyleSheet.create({
+    wrapper: {
+        padding: 5,
+    },
+    input: {
+        flex: 1,
+        margin: 5,
+        padding: 5,
+        borderWidth: 2,
+        borderColor: "lightgrey",
+        borderStyle: "solid",
+    },
+    label: {
+        margin: 5,
+    }
+})

components/Price.tsx

@@ -0,0 +1,38 @@
+import { StyleSheet, Text, View } from "react-native";
+
+export type PriceDisplayProps = {
+    price: number,
+    currency?: {
+        symbol: string,
+    }
+}
+
+export default function PriceDisplay({ price }: PriceDisplayProps) {
+
+
+
+    return (
+        <View style={styles.bigPriceWrapper} aria-label="calculated price">
+            <Text style={styles.bigPrice}>$ {price.toLocaleString(
+                undefined, {
+                    minimumFractionDigits: 2,
+                    maximumFractionDigits: 2,
+                }
+            )}</Text>
+        </View>
+    );
+}
+
+
+
+export const styles = StyleSheet.create({
+    bigPriceWrapper: {
+      alignContent: "center",
+    },
+    bigPrice: {
+      alignSelf: "center",
+      fontSize: 40,
+      marginTop: 50,
+      marginBottom: 50,
+    }
+});

components/ProductAttributeEditor.tsx

@@ -4,46 +4,65 @@ import React from "react";
 import { useState } from "react";
 import { StyleSheet, Text, TextInput, TouchableHighlight, View } from "react-native";
 
-export type ProductAttributeChangeFunc = (product_id: string, key: string, newValue: string) => any;
+export type ProductAttributeChangeFunc = (key: string, newValue: string) => any;
-export type ProductAttributeDeleteFunc = (product_id: string, key: string) => any;
+export type ProductAttributeDeleteFunc = (key: string) => any;
+export type ChangeAttributeFunction = (oldKey : string, newKey : string) => any;
 
-export type ProductAttributeProps = { product: Product, attributeKey: string, attributeValue: string, onChange?: ProductAttributeChangeFunc, onDelete?: ProductAttributeChangeFunc, };
+export type ProductAttributeProps = {
+    attributeKey: string,
+    attributeValue: string,
+    onChangeAttributeKey?: ChangeAttributeFunction,
+    onChangeAttribute?: ProductAttributeChangeFunc,
+    onDelete?: ProductAttributeChangeFunc,
+};
 
-export const ProductAttributeEditor = ({ product, attributeKey: key, attributeValue: value, onDelete, onChange } : ProductAttributeProps) => {
+export const ProductAttributeEditor = ({ attributeKey, attributeValue, onDelete, onChangeAttributeKey, onChangeAttribute }: ProductAttributeProps) => {
-    const [doEdit, setDoEdit] = useState(true);
-    const [newValue, setNewValue] = useState(value);
 
-    const doChange = (e: any) => {
+    const doChangeKey = (e: any) => {
-        setNewValue(e);
+        onChangeAttributeKey && onChangeAttributeKey(attributeKey, e);
-        onChange && onChange(product.id, key, e);
+    }
+
+    const doChangeValue = (e: any) => {
+        onChangeAttribute && onChangeAttribute(attributeKey, e);
     }
 
     return (
         <View>
-            <Text>{key}</Text>
+            <View style={styles.productAttributeRow}>
-            <View>
+                <TextInput
+                    defaultValue={attributeKey}
+                    onChangeText={doChangeKey}
+                    style={styles.value}
+                    aria-label="Edit Key"
+                    />
+                <TextInput
+                    defaultValue={attributeValue}
+                    onChangeText={doChangeValue}
+                    style={styles.value}
+                    aria-label="Edit Value" />
                 <TouchableHighlight
-                    onPress={() => setDoEdit(!doEdit)}
+                    onPress={() => onDelete && onDelete(attributeKey, attributeValue)}
-                    aria-label="Property Value"
+                    aria-label="Delete Attribute"
-                >
+                    style={{ backgroundColor: "darkred", borderRadius: 5, margin: 5, padding: 5, }}>
-                    {doEdit ?
+                    <Ionicons name="trash-bin-outline" size={30} color={"white"} />
-                        (<Text>{newValue}</Text>) :
-                        (<TextInput
-                            value={newValue}
-                            onChangeText={doChange}
-                            aria-label="Edit Value" />)
-                    }
-                </TouchableHighlight>
-                <TouchableHighlight
-                    onPress={() => onDelete && onDelete(product.id, key, value)}
-                    aria-label="Delete Attribute">
-                    <Ionicons name="trash-bin-outline" />
                 </TouchableHighlight>
             </View>
         </View>
     )
 }
 
-const style = StyleSheet.create({
+const styles = StyleSheet.create({
-
+    productAttributeRow: {
+        flexDirection: "row",
+    },
+    key: {
+        flex: 1,
+    },
+    value: {
+        flex: 1,
+        borderWidth: 1,
+        borderColor: "grey",
+        borderStyle: "solid",
+        padding: 10
+    }
 });

components/ProductCalculatorSelector.tsx

@@ -0,0 +1,198 @@
+import { Product, dimensions_t } from '@/lib/product';
+import { useState, useEffect } from 'react';
+import { View, Text, StyleSheet } from 'react-native';
+import { SafeAreaView } from 'react-native-safe-area-context';
+import PriceDisplay from './Price';
+import { AreaInput } from './AreaInput';
+import { MeasurementInput } from './MeasurementInput';
+import ProductList from './ProductList';
+import UnitChooser from './UnitChooser';
+import convert, { Length } from 'convert';
+import PercentDamage from './PercentDamange';
+
+
+export default function ProductCalculatorSelector() {
+
+    const [activeProduct, setActiveProduct] = useState(null as Product | null);
+    const [price, setPrice] = useState(0);
+    const [measurement, setMeasurement] = useState({ l: 0, w: 0, u: "ft" } as dimensions_t);
+    const [percentDamage, setPercentDamange] = useState(0.0);
+
+    useEffect(function () {
+        const iv = setInterval(function () {
+            if (!(activeProduct && measurement)) return;
+            setPrice(
+                activeProduct.priceFor(measurement, percentDamage)
+            )
+        }, 50);
+        return function () {
+            clearInterval(iv);
+        };
+    }, [activeProduct, measurement, percentDamage]);
+
+    function onMeasurementSet(dimensions: dimensions_t) {
+        setMeasurement(dimensions);
+        activeProduct && setPrice(
+            activeProduct.priceFor(measurement, percentDamage)
+        )
+    }
+
+    function onUnitChosen(unit: Length) {
+        setMeasurement({
+            ...measurement,
+            u: unit,
+        });
+    }
+
+    function onSetPercentDamage(pct: number) {
+        setPercentDamange(pct);
+    }
+
+    function onProductSelected(product: Product) {
+        setActiveProduct(product);
+        setMeasurement(
+            {
+                l: convert(
+                    product.dimensions.l,
+                    product.dimensions.u,
+                ).to(measurement.u),
+                u: measurement.u,
+                ...(
+                    ("w" in measurement && "w" in product.dimensions) ? {
+                        w: convert(
+                            product.dimensions.w,
+                            product.dimensions.u,
+                        ).to(measurement.u),
+                        u: measurement.u,
+                    } : {}
+                )
+            }
+        );
+    }
+
+    return (
+        <SafeAreaView style={styles.wrapper}>
+            <PriceDisplay price={price} />
+            <View style={styles.inputAndUnitWrapper}>
+                <View style={styles.inputWrapper}>
+                    {
+                        activeProduct ? (
+                            "w" in activeProduct.dimensions ?
+                                <AreaInput
+                                    defaultValue={activeProduct.dimensions}
+                                    onMeasurementSet={onMeasurementSet}
+                                    widthLabel='enter width'
+                                    lengthLabel='enter length'
+                                />
+                                :
+                                <MeasurementInput
+                                    defaultValue={activeProduct.dimensions}
+                                    onValueSet={onMeasurementSet}
+                                    label="enter length"
+                                />
+
+                        ) : (
+                            <Text>Please select a product</Text>
+                        )
+                    }
+                    {
+                        activeProduct && <UnitChooser choices={["in", "ft"]} onChoicePressed={onUnitChosen} />
+                    }
+                </View>
+            </View>
+            {activeProduct &&
+                (<View >
+                    <PercentDamage
+                        onSetPercentage={onSetPercentDamage}
+                    />
+                </View>)
+            }
+            <ProductList onProductSelected={onProductSelected} />
+        </SafeAreaView>
+    );
+}
+
+
+export const styles = StyleSheet.create({
+    wrapper: {
+        overflow: "scroll"
+    },
+    bigPriceWrapper: {
+        alignContent: "center",
+    },
+    bigPrice: {
+        alignSelf: "center",
+        fontSize: 40,
+        marginTop: 100,
+        marginBottom: 100,
+    },
+    inputWrapper: {
+        flexDirection: "row",
+        alignItems: "flex-start",
+    },
+    unitSelector: {
+    },
+    inputAndUnitWrapper: {
+        flexDirection: "row",
+        alignSelf: "center",
+    },
+    widthInput: {
+        width: 200,
+        borderWidth: 1,
+        borderRadius: 4,
+        borderColor: "grey",
+        padding: 4,
+        margin: 4,
+        fontSize: 30,
+    },
+    activeProduct: {
+        borderWidth: 2,
+        borderColor: "black",
+        borderStyle: "solid",
+    },
+    inactiveProduct: {
+
+    },
+    titleContainer: {
+        flexDirection: 'row',
+        gap: 8,
+    },
+    stepContainer: {
+        gap: 8,
+        marginBottom: 8,
+    },
+    reactLogo: {
+        height: 178,
+        width: 290,
+        bottom: 0,
+        left: 0,
+    },
+    productTileTouchable: {
+        margin: 10,
+        padding: 20,
+        backgroundColor: "grey",
+    },
+
+    productTileTouchableActive: {
+        borderWidth: 2,
+        borderStyle: "solid",
+        borderColor: "black",
+        margin: 10,
+        padding: 20,
+    },
+
+    productTileText: {
+        textAlign: "center",
+        color: "white",
+    },
+
+    productTileTextActive: {
+        textAlign: "center",
+        color: "black",
+    },
+
+    productTileCover: {
+        padding: 4,
+    },
+
+});

components/ProductEditor.tsx

@@ -1,6 +1,6 @@
 import { useAppDispatch, useAppSelector } from "@/app/store"
-import { deleteProduct, selectProducts, updateProduct } from "@/features/product/productSlice"
+import { addAttribute, changeKey, deleteAttribute, deleteProduct, selectProductIds, selectProducts, updateAttribute, updateDimensions, updatePrice, updateProduct } from "@/features/product/productSlice"
-import { Product } from "@/lib/product";
+import { Id, Product, dimensions_t } from "@/lib/product";
 import { FlatList, SafeAreaView, StyleSheet, Text } from "react-native";
 import { ProductEditorItem } from "./ProductEditorItem";
 
@@ -13,23 +13,50 @@ export const ProductEditor = ({}) => {
         dispatch(deleteProduct(product_id));
     }
 
-    function onProductUpdated(product_id: string, product: Product) {
+    function onAttributeDelete(product_id: string, attribute: string) {
-        dispatch(updateProduct(product));
+        dispatch(deleteAttribute({product_id: product_id, attribute}));
     }
 
+    function onAttributeUpdated(product_id: string, attribute: string, value: string) {
+        dispatch(updateAttribute({product_id, attributeKey: attribute, attributeValue: value}));
+    }
+
+    function onAttributeAdded(product_id: Id) {
+        console.log("Adding attribute to %s", product_id);
+        dispatch(addAttribute(product_id));
+    }
+
+    function onPriceUpdated(product_id: string, pricePerUnit: number) {
+        dispatch(updatePrice({product_id, pricePerUnit}));
+    }
+
+    function onAttributeKeyChanged(product_id : string, oldKey : string, newKey : string) {
+        dispatch(changeKey({product_id, oldKey, newKey}))
+    }
+
+    function onDimensionUpdated(product_id: string, dimensions: dimensions_t) {
+        dispatch(updateDimensions({product_id, dimensions}));
+    }
 
     return (
-        <SafeAreaView>
+        <SafeAreaView style={{overflow: "scroll"}}>
-            <Text>Hello</Text>
+            <Text>Edit Products</Text>
             <FlatList
             data={products}
+            keyExtractor={(p, i) => `product-${p.id}`}
             renderItem={
                 ({item}) => {
+
                     return (
                         <ProductEditorItem
                         product={item}
                         onProductDeleted={onProductDeleted}
-                        onProductUpdated={onProductUpdated}
+                        onAttributeDeleted={onAttributeDelete}
+                        onAttributeKeyChanged={onAttributeKeyChanged}
+                        onAttributeUpdated={onAttributeUpdated}
+                        onAttributeAdded={onAttributeAdded}
+                        onPriceUpdated={onPriceUpdated}
+                        onDimensionsUpdated={onDimensionUpdated}
                         />
                     )
                 }
@@ -40,6 +67,10 @@ export const ProductEditor = ({}) => {
 }
 
 const styles = StyleSheet.create({
+    h1: {
+        textAlign: "center",
+        fontFamily: "sans-serif"
+    },
     product: {
         
     }

components/ProductEditorItem.tsx

@@ -1,56 +1,161 @@
-import { Product } from "@/lib/product"
+import { Id, Product, dimensions_t } from "@/lib/product"
 import { useState } from "react"
-import { FlatList, StyleSheet, Text, TouchableHighlight, View } from "react-native"
+import { Button, FlatList, StyleSheet, Text, TextInput, Touchable, TouchableHighlight, View } from "react-native"
-import {ProductAttributeEditor} from "./ProductAttributeEditor";
+import { ProductAttributeEditor } from "./ProductAttributeEditor";
-import React from "react";
+import { Dropdown } from 'react-native-element-dropdown';
+import { Ionicons } from "@expo/vector-icons";
+import { Length } from "convert";
 
-export type ProductUpdatedFunc = (product_id: string, product: Product) => any;
+export type ProductAddedFunc = () => any;
-export type ProductDeletedFunc = (product_id: string) => any;
+export type ProductDeletedFunc = (product_id: Id) => any;
+export type AttributeAddedFunc = (product_id: Id) => any;
+export type AttributeKeyUpdatedFunc = (product_id: Id, oldKey: string, newKey: string) => any;
+export type AttributeUpdatedFunc = (product_id: Id, attribute: string, value: string) => any;
+export type AttributeDeletedFunc = (product_id: Id, attribute: string) => any;
+export type PriceUpdatedFunc = (product_id: Id, price: number) => any;
+export type DimensionUpdatedFunc = (product_id: Id, dimension: dimensions_t) => any;
 
 export type ProductEditorItemProps = {
     product: Product,
-    onProductUpdated?: ProductUpdatedFunc,
+    onProductAdded?: ProductAddedFunc,
     onProductDeleted?: ProductDeletedFunc,
+    onAttributeAdded?: AttributeAddedFunc,
+    onAttributeKeyChanged?: AttributeKeyUpdatedFunc,
+    onAttributeUpdated?: AttributeUpdatedFunc,
+    onAttributeDeleted?: AttributeDeletedFunc,
+    onPriceUpdated?: PriceUpdatedFunc,
+    onDimensionsUpdated?: DimensionUpdatedFunc,
 }
 
-export const ProductEditorItem = ({ product, onProductUpdated, onProductDeleted }: ProductEditorItemProps) => {
+export const ProductEditorItem = (props: ProductEditorItemProps) => {
 
     const [showAttributes, setShowAttributes] = useState(false);
+    const product = props.product;
 
-    function onAttributeChanged(product_id: string, key: string, newValue: string) {
+    function onAttributeChanged(key: string, newValue: string) {
-        product.attributes[key] = newValue;
+        props.onAttributeUpdated && props.onAttributeUpdated(product.id, key, newValue);
-        onProductUpdated && onProductUpdated(product_id, product);
-
     }
 
-    function onAttributeDelete(product_id: string, key: string) {
+    function onAttributeKeyChanged(oldKey: string, newKey: string) {
-        product.removeAttribute(key);
+        props.onAttributeKeyChanged && props.onAttributeKeyChanged(product.id, oldKey, newKey);
-        onProductDeleted && onProductDeleted(product_id);
     }
 
+    function onAttributeDelete(key: string) {
+        props.onAttributeDeleted && props.onAttributeDeleted(product.id, key);
+    }
+
+    function onPricePerUnitChange(pricePerUnit: string) {
+        props.onPriceUpdated && props.onPriceUpdated(product.id, parseFloat(pricePerUnit) || parseInt(pricePerUnit));
+    }
+
+    function onUnitsChanged(newUnits: Length) {
+        props.onDimensionsUpdated && props.onDimensionsUpdated(product.id, {
+            ...(product.dimensions as dimensions_t),
+            u: newUnits,
+        })
+    }
+
+    function onChangeLength(len: string) {
+        const l = parseFloat(len) || parseInt(len);
+        props.onDimensionsUpdated && props.onDimensionsUpdated(product.id, {
+            ...(product.dimensions as dimensions_t),
+            l,
+        })
+    }
+
+    function onChangeWidth(width: string) {
+        const w = width.length == 0 ? null : parseFloat(width) || parseInt(width);
+        props.onDimensionsUpdated && props.onDimensionsUpdated(product.id, {
+            ...(product.dimensions as dimensions_t),
+            ...(w ? {w} : {}),
+        })
+    }
+
+    function onDeleteProduct() {
+        props.onProductDeleted && props.onProductDeleted(product.id);
+    }
+
+    const length = new String(product.dimensions.l || product.dimensions.l || "0") as string;
+    const width = new String(product.dimensions.w || "") as string;
+    const dimension = product.dimensions.u || product.dimensions.u || "foot";
+
     return (
         <View>
-            <TouchableHighlight
+            <View style={styles.productListHeader}>
-                onPress={() => setShowAttributes(!showAttributes)}
+                <TouchableHighlight
-                aria-label="Product Item"
+                    onPress={() => setShowAttributes(!showAttributes)}
-            >
+                    aria-label="Product Item"
-                <Text style={styles.product}>{product.attributes.name || `Product ${product.id}`} </Text>
+                    style={styles.productItemName}
-            </TouchableHighlight>
+                >
+                    <Text style={styles.productNameText}>{product.attributes.name || `Product ${product.id}`}</Text>
+                </TouchableHighlight>
+                <TouchableHighlight
+                    onPress={() => onDeleteProduct()}
+                    aria-label="delete product"
+                    style={styles.deleteProductHighlight}
+                    >
+                        <Ionicons
+                            style={styles.deleteProductButton}
+                            name="trash-outline"
+                        />
+                </TouchableHighlight>
+                </View>
             {showAttributes &&
                 (
-                    <FlatList
+                    <View style={styles.detailsWrapper}>
-                        data={product.attributesAsList}
+                        <View style={styles.priceSpecWrapper}>
-                        renderItem={({ item }) => (
+                            <Text style={styles.priceLabel}>$</Text>
-                            <ProductAttributeEditor
+                            <TextInput inputMode="decimal"
-                                product={product}
+                                defaultValue={new String(product.pricePerUnit) as string}
-                                attributeKey={item.key || "some key"}
+                                aria-label="price per unit"
-                                attributeValue={item.value}
+                                onChangeText={onPricePerUnitChange}
-                                onChange={onAttributeChanged}
+                                style={styles.priceInput}
-                                onDelete={onAttributeDelete}
                             />
-                        )}
+                            <Text style={styles.per}>per</Text>
-                        keyExtractor={(item) => `${product.id}-${item.key}`}
+                            <Dropdown
-                    />
+                                data={[
+                                    {label: "feet", value: "ft"},
+                                    {label: "inches", value: "in"},
+                                ]}
+                                style={styles.unitsSelect}
+                                mode="modal"
+                                labelField="label"
+                                valueField="value"
+                                value={product.dimensions.u || "ft"}
+                                onChange={(item) => onUnitsChanged(item.value as Length)}
+                            />
+                            <TextInput
+                                inputMode="decimal"
+                                defaultValue={length}
+                                onChangeText={onChangeLength}
+                                style={styles.lengthInput}
+                                aria-label="length"
+                            />
+                            <Text style={{flex: 1,}}>x</Text>
+                            <TextInput
+                                inputMode="decimal"
+                                defaultValue={width}
+                                onChangeText={onChangeWidth}
+                                style={styles.widthInput}
+                                aria-label="width"
+                            />
+                        </View>
+                        <Button title="+ Add Attribute" onPress={() => props.onAttributeAdded && props.onAttributeAdded(product.id)} />
+                        <FlatList
+                            style={styles.productAttributesList}
+                            data={Object.entries(product.attributes)}
+                            renderItem={({ item }) => (
+                                <ProductAttributeEditor
+                                    attributeKey={item[0] || "some key"}
+                                    attributeValue={item[1]}
+                                    onChangeAttributeKey={onAttributeKeyChanged}
+                                    onChangeAttribute={onAttributeChanged}
+                                    onDelete={onAttributeDelete}
+                                />
+                            )}
+                            keyExtractor={(item, i) => `${product.id}-${i}`}
+                        />
+                    </View>
                 )
             }
         </View>
@@ -58,5 +163,68 @@ export const ProductEditorItem = ({ product, onProductUpdated, onProductDeleted
 }
 
 const styles = StyleSheet.create({
-    product: {},
+    deleteProductHighlight: {
+
+        padding: 5,
+        borderWidth: 1,
+    },
+    deleteProductButton: {
+        fontSize: 20,
+    },
+    detailsWrapper: {
+
+    },
+    priceSpecWrapper: {
+        flexDirection: "row",
+    },
+    priceLabel: {
+    },
+    priceInput: {
+        flex: 1,
+        borderWidth: 2,
+        borderColor: "lightgrey",
+        borderStyle: "solid",
+    },
+    per: {
+        padding: 5,
+    },
+    unitsLabel: {  
+    },
+    unitsSelect: {
+        flex: 1,
+        padding: 5,
+    },
+    lengthInput: {
+        flex: 1,
+        borderWidth: 2,
+        borderColor: "lightgrey",
+        borderStyle: "solid",
+    },
+    widthInput: {
+        flex: 1,
+        borderWidth: 2,
+        borderColor: "lightgrey",
+        borderStyle: "solid",
+    },
+    productListHeader: {
+        flexDirection: "row",
+        padding: 5,
+    },
+    productNameText: {
+        paddingLeft: 10,
+        paddingRight: 10,
+    },
+    productItemName: {
+        flex: 1,
+        backgroundColor: "lightgrey",
+        padding: 4,
+        margin: 4,
+    },
+    productAttributesList: {
+        margin: 10,
+        padding: 10,
+        borderWidth: 1,
+        borderStyle: "solid",
+        borderColor: "black",
+    },
 })

components/ProductList.tsx

@@ -0,0 +1,46 @@
+import { FlatList, ScrollView, StyleSheet, Text, TouchableHighlight } from "react-native";
+import { ProductTile } from "./ProductTile";
+import { Id, Product } from "@/lib/product";
+import { Key, useEffect, useState } from "react";
+import { useSelector } from "react-redux";
+import { selectProducts } from "@/features/product/productSlice";
+import { useAppSelector } from "@/app/store";
+
+export type ProductSelectionProps = {
+  onProductSelected?: (product: Product) => any;
+}
+
+export default function ProductList({ onProductSelected }: ProductSelectionProps) {
+
+  const [activeProduct, setActiveProduct] = useState(null as null | Product);
+  const products = useAppSelector(selectProducts).filter(p => (!!p.dimensions));
+
+  function doOnProductSelected(product: Product) {
+    setActiveProduct(product);
+    onProductSelected && onProductSelected(product);
+  }
+
+  return (
+    <ScrollView scrollToOverflowEnabled={true}>
+      {products.map(product => {
+        return (
+          <ProductTile
+            product={product}
+            onProductSelected={doOnProductSelected}
+            isActive={activeProduct === product}
+            key={product.id}
+          />
+        );
+      })}
+    </ScrollView>
+  )
+}
+
+const styles = StyleSheet.create({
+
+  productSelectorFlatList: {
+    padding: 10,
+    margin: 10,
+  },
+
+})

components/ProductTile.tsx

@@ -1,44 +1,55 @@
 import { Product } from "@/lib/product"
-import { ImageBackground, StyleProp, StyleSheet, Text, ViewStyle } from "react-native";
+import { ImageBackground, StyleProp, StyleSheet, Text, TouchableHighlight, View, ViewStyle } from "react-native";
 import { AnimatedStyle } from "react-native-reanimated";
-import { View } from "react-native-reanimated/lib/typescript/Animated";
 
 export type OnProductSelectedFunc = (product : Product) => any;
 
 type MyStyle = StyleProp<AnimatedStyle<StyleProp<ViewStyle>>>;
 
+type StyleSpec = {
+    highlight?: MyStyle,
+    text?: MyStyle,
+    image?: MyStyle,
+}
+
+
 export type ProductTileProps = {
     product: (Product),
     onProductSelected?: OnProductSelectedFunc,
-    style?: {
+    isActive: boolean,
-        tile?: MyStyle,
-        image?: MyStyle,
-    }
 }
 
 const FALLBACK_IMAGE = "";
 
-export function ProductTile ({product, onProductSelected, style} : ProductTileProps) {
+export function ProductTile ({product, onProductSelected, isActive} : ProductTileProps) {
-    const src = product.attributes.image || FALLBACK_IMAGE;
+    const k = isActive ? "active" : "default";
     return (
-        <View style={style?.tile}>
+
-            <ImageBackground
+        <TouchableHighlight
-                src={src}
+            style={styles[k].highlight}
-                resizeMode="cover"
+            onPress={() => onProductSelected && onProductSelected(product)}>
-                style={styles.image}
+            <Text style={styles[k].text}>{product.attributes.name || `Product ${product.id}`} ({product.pricePerUnitDisplay})</Text>
-            >
+      </TouchableHighlight>
-                <Text style={styles.text}>{product.attributes.name || `Product ${product.id}`}</Text>
-                <Text style={styles.text}>{ product.pricePerUnit.toString() } / {product.measure.value} {product.measure.unit.symbol} </Text>
-            </ImageBackground>
-        </View>
     );
 }
 
-const styles = StyleSheet.create({
+const styles = {
-    image: {
+    active: StyleSheet.create({
-
+        highlight: {
-    },
+            padding: 10,
-    text: {
+            margin: 2,
-
+            color: "lightblue",
-    },
+        },
-})
+        text: {
+        }
+    }),
+    default: StyleSheet.create({
+        highlight: {
+            padding: 10,
+            margin: 2,
+            backgroundColor: "lightgrey",
+        },
+        text: {
+        }
+    }),
+}

components/UnitChooser.tsx

@@ -0,0 +1,49 @@
+import { Length } from "convert";
+import { useState } from "react";
+import { Button, StyleSheet, View } from "react-native";
+
+export type UnitChooserProps = {
+    choices: Length[],
+    onChoicePressed: (l: Length) => any,
+    activeColor?: string,
+    defaultColor?: string,
+}
+
+export default function UnitChooser({ choices, onChoicePressed, activeColor, defaultColor }: UnitChooserProps) {
+    const [value, setValue] = useState(choices[0] as Length);
+
+    activeColor = activeColor || "lightblue";
+    defaultColor = defaultColor || "lightgrey";
+
+    function doChoiceClicked(choice: Length) {
+        setValue(choice);
+        onChoicePressed(choice);
+    }
+
+    return (
+        <View style={styles.unitChooser}>
+            {choices.map((ci) => {
+                return (
+                    <Button
+                        title={ci}
+                        onPress={() => doChoiceClicked(ci)}
+                        color={value === ci ? activeColor : defaultColor}
+                    />
+                )
+            })
+            }
+        </View>
+    )
+}
+
+const styles = StyleSheet.create({
+    unitChooser: {
+
+    },
+    active: {
+
+    },
+    default: {
+
+    }
+})

components/__tests__/AreaInput-test.tsx

@@ -0,0 +1,31 @@
+import { render, fireEvent, screen } from '@testing-library/react-native';
+import { AreaInput } from '../AreaInput';
+
+describe('AreaInput', () => {
+  it('renders correctly', () => {
+    render(<AreaInput lengthLabel='length' widthLabel='width' />);
+    const lengthInput = screen.getByLabelText('length');
+    const widthInput = screen.getByLabelText('width');
+    expect(lengthInput).toBeTruthy();
+    expect(widthInput).toBeTruthy();
+  });
+
+  it('calls onValueSet when a value is entered', () => {
+    const onMeasurementSetMock = jest.fn();
+    render(<AreaInput onMeasurementSet={onMeasurementSetMock} lengthLabel='length' widthLabel='width' defaultValue={{l: 4, w:4, u: "inch"}}/>);
+    const lengthInput = screen.getByLabelText('length');
+    const widthInput = screen.getByLabelText('width');
+    fireEvent.changeText(lengthInput, '10');
+    expect(onMeasurementSetMock).toHaveBeenCalledWith({
+      l: 10,
+      w: 4,
+      u: "inch"
+    });
+    fireEvent.changeText(widthInput, '10');
+    expect(onMeasurementSetMock).toHaveBeenCalledWith({
+      l: 10,
+      w: 10,
+      u: "inch"
+    });
+  });
+});

components/__tests__/MeasurementInput-test.tsx

@@ -0,0 +1,18 @@
+import { render, fireEvent, screen } from '@testing-library/react-native';
+import { MeasurementInput } from '../MeasurementInput';
+
+describe('MeasurementInput', () => {
+  it('renders correctly', () => {
+    render(<MeasurementInput units="foot" defaultValue={10} />);
+    const input = screen.getByLabelText('Enter measurement');
+    expect(input).toBeTruthy();
+  });
+
+  it('calls onValueSet when value is changed', () => {
+    const mockOnValueSet = jest.fn();
+    render(<MeasurementInput units="foot" defaultValue={10} onValueSet={mockOnValueSet} />);
+    const input = screen.getByLabelText('Enter measurement');
+    fireEvent.changeText(input, '20');
+    expect(mockOnValueSet).toHaveBeenCalledWith({ l: 20, u: 'foot' });
+  });
+});

components/__tests__/ProductAttributeEditor-test.tsx

@@ -6,10 +6,12 @@ import React from "react";
 import { emitTypingEvents } from "@testing-library/react-native/build/user-event/type/type";
 
 describe("Product editor tests", () => {
+    const productName = "Fun Product";
     it("Product attributes can be deleted", async () => {
         const product = new Product(
             100,
-            area("squareFoot", 4 * 7)
+            {l: 100, u: "foot"},
+            {"name" : productName}
         );
         const onChange = jest.fn();
         const onDelete = jest.fn();
@@ -18,7 +20,7 @@ describe("Product editor tests", () => {
                 attributeKey="name"
                 attributeValue="product"
                 product={product}
-                onChange={onChange}
+                onChangeAttribute={onChange}
                 onDelete={onDelete}
             />);
         expect(screen.getByLabelText("Delete Attribute")).not.toBeNull();
@@ -26,25 +28,28 @@ describe("Product editor tests", () => {
         expect(onDelete).toHaveBeenCalled();
     });
     it("Product attributes can be modified", async () => {
-        const productName = "Fun Product";
         const product = new Product(
             100,
-            area("squareFoot", 4 * 7),
+            {l: 100, u: "foot"},
-            { name: productName },
+            {"name" : productName}
         );
         const onChange = jest.fn();
         const onDelete = jest.fn();
+        const onKeyChange = jest.fn();
         render(
             <ProductAttributeEditor
-                attributeKey="Name"
+                attributeKey="old test key"
-                attributeValue="product"
+                attributeValue="old test value"
-                product={product}
+                onChangeAttribute={onChange}
-                onChange={onChange}
                 onDelete={onDelete}
+                onChangeAttributeKey={onKeyChange}
             />);
-        fireEvent.press(screen.getByText("product")); // Use getByText instead of findByText
+        fireEvent.changeText(screen.getByLabelText("Edit Key"), "new test key");
+        expect(onKeyChange).toHaveBeenCalled();
         fireEvent.changeText(screen.getByLabelText("Edit Value"), "new name");
         expect(onChange).toHaveBeenCalled();
+        fireEvent.press(screen.getByLabelText("Delete Attribute"));
+        expect(onDelete).toHaveBeenCalled();
     })
 
 })

components/__tests__/ProductCalculatorSelector-test.tsx

@@ -0,0 +1,72 @@
+import { render, fireEvent, screen, act, within } from '@testing-library/react-native';
+import { Provider } from 'react-redux';
+import ProductCalculatorSelector from '@/components/ProductCalculatorSelector';
+import { renderWithProviders } from '@/lib/rendering';
+import { Product } from '@/lib/product';
+
+describe('ProductCalculatorSelector', () => {
+
+  const mockAreaProduct = new Product(
+    100,
+    { l: 4, w: 8, u: "ft" },
+    {"name": "area product"},
+  );
+  const mockLengthProduct = new Product(
+    100,
+    { l: 4, u: "ft" },
+    {"name": "length product"},
+  );
+
+  it('renders correctly', () => {
+    renderWithProviders(
+      (<ProductCalculatorSelector />),
+      {
+        products: [
+          mockAreaProduct.asObject,
+          mockLengthProduct.asObject,
+        ],
+      }
+    )
+
+    expect(screen.getByText('Please select a product')).toBeTruthy();
+    const label = `${mockAreaProduct.attributes.name} (${mockAreaProduct.pricePerUnitDisplay})`;
+    expect(screen.getByText(label)).toBeTruthy();
+  });
+
+  it('a product can be selected', () => {
+    renderWithProviders(
+      (<ProductCalculatorSelector />),
+      {
+        products: [
+          mockLengthProduct.asObject,
+          mockAreaProduct.asObject,
+        ]
+      }
+    );
+
+    expect(screen.getByText('Please select a product')).toBeTruthy();
+    const areaLabel = `${mockAreaProduct.attributes.name} (${mockAreaProduct.pricePerUnitDisplay})`;
+    const lengthLabel = `${mockLengthProduct.attributes.name} (${mockLengthProduct.pricePerUnitDisplay})`;
+
+    fireEvent.press(screen.getByText(areaLabel));
+    const lengthInput = screen.getByLabelText("enter length");
+    const widthInput = screen.getByLabelText("enter length");
+    expect(lengthInput).toBeTruthy();
+    expect(widthInput).toBeTruthy();
+
+    fireEvent.press(screen.getByText("in"));
+
+    act(() => {
+      fireEvent.changeText(lengthInput, "2");
+      fireEvent.changeText(widthInput, "4");
+    });
+    
+    jest.advanceTimersByTime(3000);
+
+    const price = mockAreaProduct.priceFor({l: 2, w: 4, u: "ft"});
+    const sPrice = price.toLocaleString(undefined, {maximumFractionDigits: 2, minimumFractionDigits: 2,});
+    const element = screen.getByLabelText("calculated price");
+    const {getByText} = within(element);
+    expect(getByText(sPrice)).toBeTruthy();
+  });
+});

components/__tests__/ProductEditor-test.tsx

@@ -1,25 +1,51 @@
 import { renderWithProviders } from "@/lib/rendering";
 import { ProductEditor } from "@/components/ProductEditor";
-import {products as fixtures} from "@/__fixtures__/initialProducts";
+import { act, fireEvent, screen } from "@testing-library/react-native";
-import { screen } from "@testing-library/react-native";
 import { selectProducts } from "@/features/product/productSlice";
+import { Product } from "@/lib/product";
 
 describe("ProductEditor", () => {
+    const productName = "Flooring"
+    const mockProduct = new Product(
+        25,
+        { l: 4, w: 8, u: "foot" },
+        { name: productName },
+    )
     it("renders correctly", async () => {
-        const {store} = renderWithProviders(<ProductEditor />, {
+        const { store } = renderWithProviders(<ProductEditor />, {
-            products: fixtures,
+            products: [
+                mockProduct.asObject,
+            ],
         });
 
         const state1 = store.getState();
 
-        const products = selectProducts(state1);
+        let products = selectProducts(state1);
 
-        expect(products).toHaveLength(6);
+        expect(products).toHaveLength(1);
 
         // Check if the product names are rendered
         expect(screen.getByText(products[0].attributes.name as string)).toBeTruthy();
-        expect(screen.getByText(products[1].attributes.name as string)).toBeTruthy();
+
-        expect(screen.getByText(products[2].attributes.name as string)).toBeTruthy();
+        // Start to edit a product
-        expect(screen.getByText(products[3].attributes.name as string)).toBeTruthy();
+        fireEvent.press(screen.getByText(productName));
+
+        // Change properties of the product to make sure it's updated in the store
+
+        act(() => {
+            fireEvent.changeText(screen.getByLabelText("length"), "16");
+        })
+        products = selectProducts(store.getState());
+        expect(products[0].dimensions.l).toBe(16);
+        act(() => {
+            fireEvent.changeText(screen.getByLabelText("width"), "32");
+        })
+        products = selectProducts(store.getState());
+
+        expect(products[0].dimensions.w).toBe(32);
+
+        fireEvent.press(screen.getByLabelText("delete product"));
+        products = selectProducts(store.getState());
+        expect(products.length).toBe(0);
     });
 });

components/__tests__/ProductEditorItem-test.tsx

@@ -3,22 +3,36 @@ import { render, fireEvent, screen } from '@testing-library/react-native';
 import { ProductEditorItem } from '../ProductEditorItem';
 import { Product } from '@/lib/product';
 import { area } from 'enheter';
+import { renderWithProviders } from '@/lib/rendering';
 
 describe('ProductEditorItem', () => {
+  const productName = "Product 1";
   const mockProduct = new Product(
     25,
-    area("squareFoot", 4 * 8),
+    {l: 4, u: 'feet'},
-    {"name": "Product 1"},
+    {"name": productName},
   )
 
-  const mockOnProductUpdated = jest.fn();
+  const onAttributeAdded = jest.fn();
   const mockOnProductDeleted = jest.fn();
+  const onAttributeDeleted = jest.fn();
+  const onAttributeKeyChanged = jest.fn();
+  const onAttributeUpdated = jest.fn();
+  const onProductAdded = jest.fn();
+  const onPriceUpdated = jest.fn();
+  const onDimensionUpdated = jest.fn();
 
   it('renders correctly', () => {
     render(
       <ProductEditorItem
         product={mockProduct}
-        onProductUpdated={mockOnProductUpdated}
+        onAttributeAdded={onAttributeAdded}
+        onAttributeDeleted={onAttributeDeleted}
+        onAttributeKeyChanged={onAttributeKeyChanged}
+        onAttributeUpdated={onAttributeUpdated}
+        onProductAdded={onProductAdded}
+        onPriceUpdated={onPriceUpdated}
+        onDimensionsUpdated={onDimensionUpdated}
         onProductDeleted={mockOnProductDeleted}
       />
     );
@@ -26,15 +40,37 @@ describe('ProductEditorItem', () => {
   });
 
   it('calls onProductUpdated when TouchableHighlight is pressed', () => {
-    render(
+    const {store} = renderWithProviders(
       <ProductEditorItem
         product={mockProduct}
-        onProductUpdated={mockOnProductUpdated}
+        onAttributeAdded={onAttributeAdded}
+        onAttributeDeleted={onAttributeDeleted}
+        onAttributeKeyChanged={onAttributeKeyChanged}
+        onAttributeUpdated={onAttributeUpdated}
+        onProductAdded={onProductAdded}
+        onPriceUpdated={onPriceUpdated}
+        onDimensionsUpdated={onDimensionUpdated}
         onProductDeleted={mockOnProductDeleted}
-      />
+      />, {
+        products: [mockProduct],
+      }
     );
     fireEvent.press(screen.getByText("Product 1"));
-    expect(screen.getByText('name')).toBeTruthy();
+    expect(screen.getByLabelText("units")).toBeTruthy();
-    expect(screen.getAllByText('Product 1').length).toEqual(2);
+    expect(screen.getByLabelText("Edit Key")).toBeTruthy();
+    expect(screen.getAllByLabelText("Edit Value").length).toEqual(1);
+
+    // Now start modifying the properties.
+    fireEvent.changeText(screen.getByLabelText("price per unit"), "40.00");
+    expect(onPriceUpdated).toHaveBeenCalled();
+    
+    fireEvent.changeText(screen.getByLabelText("length"), "12");
+    expect(onDimensionUpdated).toHaveBeenCalled();
+    
+    fireEvent.changeText(screen.getByLabelText("width"), "12");
+    expect(onDimensionUpdated).toHaveBeenCalled();
+    
+    fireEvent.press(screen.getByLabelText("delete product"));
+    expect(mockOnProductDeleted).toHaveBeenCalled();
   });
 });

components/__tests__/UnitChooser-test.tsx

@@ -0,0 +1,29 @@
+import React from 'react';
+import { render, fireEvent } from '@testing-library/react-native';
+import UnitChooser from "../UnitChooser";
+import { Length } from 'safe-units';
+
+describe('UnitChooser', () => {
+  const mockOnChoicePressed = jest.fn();
+  const choices = ['foot', 'inch'] as Length [];
+
+  it('renders correctly', () => {
+    const { getByText } = render(
+      <UnitChooser choices={choices} onChoicePressed={mockOnChoicePressed} />
+    );
+
+    choices.forEach(choice => {
+      expect(getByText(choice)).toBeTruthy();
+    });
+  });
+
+  it('calls onChoicePressed when a button is pressed', () => {
+    const { getByText } = render(
+      <UnitChooser choices={choices} onChoicePressed={mockOnChoicePressed} />
+    );
+
+    fireEvent.press(getByText(choices[0]));
+
+    expect(mockOnChoicePressed).toHaveBeenCalledWith(choices[0]);
+  });
+});

eas.json

@@ -0,0 +1,18 @@
+{
+  "cli": {
+    "version": ">= 10.0.3"
+  },
+  "build": {
+    "development": {
+      "developmentClient": true,
+      "distribution": "internal"
+    },
+    "preview": {
+      "distribution": "internal"
+    },
+    "production": {}
+  },
+  "submit": {
+    "production": {}
+  }
+}

features/product/productSlice.ts

@@ -1,17 +1,36 @@
 import { createSelector, createSlice, PayloadAction } from '@reduxjs/toolkit';
-import { Id, Product } from '@/lib/product';
+import { area_t, dimensions_t, Id, length_t, Product, ProductData } from '@/lib/product';
 import uuid from "react-native-uuid";
 import { RootState } from '@/app/store';
+import { classToPlain, plainToClass } from 'class-transformer';
 
 const initialState = {
-    products: [] as Product [],
+    products: [] as ProductData[],
 }
 
+export type UpdateAttribute = {
+    product_id: Id,
+    attributeKey: string,
+    attributeValue: any,
+}
+
+export type UpdateAttributeKey = {
+    product_id: Id,
+    oldKey: string,
+    newKey: string,
+}
+
+export type AddAttribute = {
+    product_id: Id,
+}
+
+const cp = (obj: any) => JSON.parse(JSON.stringify(obj));
+
 const productsState = createSlice({
     name: 'products-slice',
     initialState,
     reducers: {
-        createProduct(state, action: PayloadAction<Product>) {
+        createProduct(state, action: PayloadAction<ProductData>) {
             if (!state) {
                 return initialState
             }
@@ -20,31 +39,133 @@ const productsState = createSlice({
             state.products = [...state.products, action.payload];
             return state;
         },
-        updateProduct(state, action: PayloadAction<Product>) {
-            if (!state) return initialState;
-            const product = action.payload;
-            if (!product.id) {
-                throw new Error("Product has no ID");
-            }
-            state.products = state.products.map((prod) => {
-                return prod.id === product.id ? product : prod;
-            })
-            return state;
-        },
         deleteProduct(state, action: PayloadAction<Id>) {
             if (!state) return initialState;
-            state.products = state.products.filter((prod) => {
+            return {
-                prod.id !== action.payload;
+                ...state,
-            })
+                products: [...state.products.filter((prod) => {
+                    return prod.id?.valueOf() !== action.payload.valueOf();
+                })],
+            }
+        },
+        updateAttribute(state, action: PayloadAction<UpdateAttribute>) {
+            const { product_id, attributeKey, attributeValue } = action.payload
+            if (!state) return initialState;
+            return {
+                ...state,
+                products: state.products.map(prod => {
+                    if (prod.id !== product_id) return prod;
+                    const attributes = cp(prod.attributes);
+                    attributes[attributeKey] = attributeValue;
+                    return {
+                        ...prod,
+                        attributes,
+                    }
+                })
+            };
+        },
+        changeKey(state, action: PayloadAction<UpdateAttributeKey>) {
+            if (!state) return initialState;
+            const { product_id, oldKey, newKey } = action.payload
+
+            return {
+                ...state,
+                products: state.products.map(prod => {
+                    if (prod.id !== product_id) return prod;
+
+                    const attributes = cp(prod.attributes);
+                    attributes[newKey] = attributes[oldKey];
+                    delete attributes[oldKey];
+                    attributes.id = prod.id;
+                    return {
+                        ...prod,
+                        attributes,
+                    }
+                })
+            };
+        },
+        addAttribute(state, action: PayloadAction<Id>) {
+            if (!state) return initialState;
+            const product_id = action.payload;
+            state.products = state.products.map(prod => {
+                if (prod.id !== product_id) return prod;
+                const i = (Object.keys(prod.attributes || {}).filter(k => k.match(/attribute [\d]+/)) || []).length;
+                const newAttribute = `attribute ${i + 1}`;
+                return {
+                    ...prod,
+                    attributes: {
+                        ...prod.attributes,
+                        [newAttribute]: `value`,
+                    }
+                }
+            });
             return state;
-        }
+        },
+
+        deleteAttribute(state, action: PayloadAction<{ product_id: Id, attribute: string }>) {
+            if (!state) return initialState;
+            const { product_id, attribute } = action.payload;
+            return {
+                ...state,
+                products: state.products.map(prod => {
+                    if (prod.id !== product_id) return prod;
+                    const attributes = Object.fromEntries(Object.entries(prod).filter(([k, v]) => (k !== attribute)));
+                    return {
+                        ...prod,
+                        attributes,
+                    }
+                }),
+            };
+        },
+        updatePrice(state, action: PayloadAction<{ product_id: Id, pricePerUnit: number }>) {
+            if (!state) return initialState;
+            const { product_id, pricePerUnit } = action.payload;
+            state.products = state.products.map(prod => {
+                if (prod.id !== product_id) return prod;
+                prod.pricePerUnit = pricePerUnit;
+                return prod;
+            });
+            return state;
+        },
+        updateDimensions(state, action: PayloadAction<{ product_id: Id, dimensions: dimensions_t }>) {
+            if (!state) return initialState;
+            const { product_id, dimensions } = action.payload;
+            console.log("Changing dimensions: %o", action.payload);
+            return {
+                ...state,
+                products: state.products.map(prod => {
+                    if (prod.id !== product_id) return prod;
+                    return {
+                        ...prod,
+                        dimensions,
+                    }
+                }),
+            };
+        },
+
     }
 });
 
-export const selectProducts = (state : RootState) => {
+export const selectProductsDatas = (state: RootState) => {
     return state.products;
 }
 
+export const selectProducts = createSelector([selectProductsDatas], productsData => {
+    return productsData.map(d => Product.fromObject(d));
+})
+
+export const selectProductIds = createSelector([selectProducts], products => {
+    return products.map(p => p.id);
+})
+
+export const selectProductAttributes = createSelector([selectProducts], products => {
+    return Object.fromEntries(products.map(p => {
+        return [
+            p.id,
+            p.attributesAsList,
+        ]
+    }))
+})
 
 export const actions = {
     ...productsState.actions
@@ -52,8 +173,13 @@ export const actions = {
 
 export const {
     createProduct,
-    updateProduct,
     deleteProduct,
+    changeKey,
+    updateAttribute,
+    addAttribute,
+    deleteAttribute,
+    updatePrice,
+    updateDimensions,
 } = productsState.actions;
 
 export default productsState.reducer;

lib/__tests__/product-test.ts

@@ -20,4 +20,11 @@ describe("Product tests", () => {
     const comparison = standard.priceFor({l : 24, u: "inch"});
     expect(comparison).toBeCloseTo(20, 4);
   });
+
+  it("Can convert to/from object", () => {
+    const standard = new Product(10, {l: 1, u : "feet"});
+    const obj = standard.asObject;
+    const back = Product.fromObject(obj);
+    expect(back).toEqual(standard);
+  })
 });

lib/product.ts

@@ -1,5 +1,6 @@
 import uuid from "react-native-uuid";
 import convert, { Area, Length } from "convert";
+import { Transform } from "class-transformer";
 
 export type Id = string;
 
@@ -14,18 +15,6 @@ export type ProductAttributes = {
     currency?: Currency,
     // [index:string]: any,
 }
-
-export type ProductData = {
-    id?: Id,
-    pricePerUnit: number,
-    measurement: {
-        unit: string,
-        value: number,
-        dimension: number,
-    },
-    attributes?: ProductAttributes,
-};
-
 export type length_t = {
     l: number, u: Length
 }
@@ -36,55 +25,77 @@ export type area_t = length_t & {
 
 export type dimensions_t = area_t | length_t;
 
+export type ProductData = {
+    id?: Id,
+    pricePerUnit: number,
+    dimensions: dimensions_t,
+    attributes?: ProductAttributes,
+};
+
+
 export type product_type_t = "area" | "length";
 
 export const isArea = (d: dimensions_t) => ("width" in d);
 export const isLength = (d: dimensions_t) => (!("width" in d));
 export const dimensionType = (d: dimensions_t) => isArea(d) ? "area" : "length"
 
-export class Product {
+export function matchDimensions(d1: dimensions_t, d2: dimensions_t) {
-    public id: string;
+    if (!
-    public area?: area_t;
+        (
-    public length?: length_t;
+            (isArea(d1) && isArea(d2)) ||
-    public presentUnits: Length;
+            (isLength(d1) && isLength(d2))
-
+        )
-    constructor(public pricePerUnit: number, dimensions: dimensions_t, public attributes: ProductAttributes = {},) {
+    ) {
-        this.id = attributes.id || uuid.v4().toString();
+        throw new Error(`Dimension mismatch: ${JSON.stringify(d1)} / ${JSON.stringify(d1)}`);
-        this.presentUnits = dimensions.u;
-        if ("w" in dimensions) {
-            this.area = {
-                l: convert(dimensions.l, dimensions.u).to("meter"),
-                w: convert(dimensions.w, dimensions.u).to("meter"),
-                u: "meter"
-            }
-        } else {
-            this.length = {
-                l: convert(dimensions.l, dimensions.u).to("meter"),
-                u: "meter"
-            };
-        }
     }
 
-    public priceFor(dimensions: dimensions_t): number {
+    return {
-        if (this.area && "w" in dimensions) {
+        l: convert(d1.l, d1.u).to(d2.u),
-            const thisA = this.area.l * this.area.w;
+        u: d2.u,
-            const otherA = convert(
+        ...(
-                dimensions.w,
+            "w" in d1 ?
-                dimensions.u
+                { w: convert(d1.w, d1.u).to(d2.u), }
-            ).to("meter") * convert(
+                : {}
-                dimensions.l,
+        )
-                dimensions.u
+    }
-            ).to("meter");
+}
-            return (otherA / thisA) * this.pricePerUnit;
+
-        } if (this.length) {
+export function dimensionArea(d: dimensions_t) {
-            const thisL = this.length.l;
+    return "w" in d ? d.w * d.l : 0;
-            const otherL = convert(
+}
-                dimensions.l,
+
-                dimensions.u
+export class Product {
-            ).to("meter");
+
-            return (otherL / thisL) * this.pricePerUnit;
+    public id?: Id;
-        }
+
-        throw new Error(`Invalid dimensions: ${dimensions}`);
+    constructor(public pricePerUnit: number, public dimensions: dimensions_t, public attributes: ProductAttributes = {},
+        id?: Id,
+    ) {
+        this.id = id || uuid.v4().toString();
+    }
+
+    public priceFor(dimensions: dimensions_t, damage : number): number {
+        if (Number.isNaN(damage)) damage = 0;
+        const dim = matchDimensions(dimensions, this.dimensions);
+        return (
+            dim.w ? dimensionArea(dim) / dimensionArea(this.dimensions) * this.pricePerUnit
+                : (dim.l / this.dimensions.l) * this.pricePerUnit
+        ) * (1.0 - damage);
+    }
+
+    get priceDisplay() {
+        return this.pricePerUnit.toLocaleString(undefined, {
+            minimumFractionDigits: 2,
+            maximumFractionDigits: 2,
+        })
+    }
+
+    get pricePerUnitDisplay() {
+        const p = this.priceDisplay;
+        const { l, u } = this.dimensions;
+        const w = (this.dimensions as area_t).w || null;
+        const d = w ? `${l}${u} x ${w}${u}` : `${l}${u}`;
+        return `$${p} per ${d}`
     }
 
     get attributesAsList() {
@@ -94,6 +105,30 @@ export class Product {
     }
 
     public removeAttribute(key: string) {
-        delete this.attributes[key];
+        this.attributes = Object.fromEntries(
+            Object.entries(this.attributes).filter(
+                ([k, v]) => {
+                    k == key;
+                }
+            )
+        );
+    }
+
+    get asObject(): ProductData {
+        return {
+            id: this.id,
+            pricePerUnit: this.pricePerUnit,
+            dimensions: this.dimensions,
+            attributes: this.attributes,
+        }
+    }
+
+    static fromObject({ id, pricePerUnit, dimensions, attributes }: ProductData) {
+        return new Product(
+            pricePerUnit,
+            dimensions,
+            attributes,
+            id,
+        )
     }
 }

lib/rendering.tsx

@@ -2,7 +2,7 @@ import { RenderOptions, render } from "@testing-library/react-native";
 import { PropsWithChildren, ReactElement } from "react";
 import { Provider } from "react-redux";
 import { setupStore, RootState } from "@/app/store";
-import { Product } from "@/lib/product";
+import { Product, ProductData } from "@/lib/product";
 
 export interface ExtendedRenderOptions extends Omit<RenderOptions, 'queries'> {
     preloadedState?: Partial<RootState>;
@@ -12,7 +12,7 @@ export interface ExtendedRenderOptions extends Omit<RenderOptions, 'queries'> {
 export function renderWithProviders(
     ui: ReactElement,
     preloadedState = {
-        products: [] as Product []
+        products: [] as ProductData []
     },
     extendedRenderOptions: ExtendedRenderOptions = {},
 ) {

package.json

@@ -5,9 +5,9 @@
   "scripts": {
     "start": "expo start",
     "reset-project": "node ./scripts/reset-project.js",
-    "android": "expo start --android",
+    "android": "expo run:android",
-    "ios": "expo start --ios",
+    "ios": "expo run:ios",
-    "web": "expo start --web",
+    "web": "expo start --web --offline",
     "test": "jest --watchAll",
     "lint": "expo lint"
   },
@@ -15,15 +15,16 @@
     "@babel/runtime": "^7.24.7",
     "@expo/vector-icons": "^14.0.2",
     "@react-native-async-storage/async-storage": "^1.23.1",
-    "@react-native/assets-registry": "^0.74.84",
+    "@react-native-community/slider": "^4.5.2",
+    "@react-native/assets-registry": "^0.74.85",
     "@react-navigation/native": "^6.1.17",
-    "@reduxjs/toolkit": "^2.2.5",
+    "@reduxjs/toolkit": "^2.2.6",
     "@testing-library/react-native": "^12.5.1",
     "@types/js-quantities": "^1.6.6",
+    "class-transformer": "^0.5.1",
     "convert": "^5.3.0",
     "enheter": "^1.0.27",
-    "esm": "link:@types/js-quantities/esm",
+    "expo": "~51.0.17",
-    "expo": "~51.0.16",
     "expo-constants": "~16.0.2",
     "expo-font": "~12.0.7",
     "expo-linking": "~6.3.1",
@@ -32,19 +33,22 @@
     "expo-status-bar": "~1.12.1",
     "expo-system-ui": "~3.0.6",
     "expo-web-browser": "~13.0.3",
-    "interopRequireDefault": "link:@babel/runtime/helpers/interopRequireDefault",
     "js-quantities": "^1.8.0",
     "react": "18.2.0",
     "react-dom": "18.2.0",
     "react-native": "0.74.2",
+    "react-native-element-dropdown": "^2.12.1",
+    "react-native-flex-grid": "^1.0.4",
     "react-native-gesture-handler": "~2.16.2",
     "react-native-reanimated": "~3.10.1",
     "react-native-safe-area-context": "4.10.1",
     "react-native-screens": "3.31.1",
+    "react-native-select-dropdown": "^4.0.1",
     "react-native-uuid": "^2.0.2",
     "react-native-web": "~0.19.12",
     "react-redux": "^9.1.2",
     "redux-remember": "^5.1.0",
+    "rfdc": "^1.4.1",
     "safe-units": "^2.0.1",
     "uuid": "^10.0.0"
   },
@@ -57,6 +61,7 @@
     "@types/react-test-renderer": "^18.3.0",
     "babel-plugin-transform-es2015-destructuring": "^6.23.0",
     "babel-plugin-transform-object-rest-spread": "^6.26.0",
+    "eas-cli": "^10.1.0",
     "enzyme-adapter-react-15": "^1.4.4",
     "eslint-config-airbnb": "^19.0.4",
     "jest": "^29.7.0",