import { Product, productPriceFor } from "@/lib/product";
import { dimensions_t } from "@/lib/dimensions";
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 ProductList from "./ProductList";
import convert, { Length } from "convert";
import PercentDamage from "./PercentDamange";
import MeasurementUnitInput from "./MeasurementUnitInput";
import UnitChooser from "./UnitChooser";

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(productPriceFor(activeProduct, measurement, percentDamage));
      }, 50);
      return function () {
        clearInterval(iv);
      };
    },
    [activeProduct, measurement, percentDamage]
  );

  function onMeasurementSet(dimensions: dimensions_t) {
    setMeasurement(dimensions);
    activeProduct &&
      setPrice(productPriceFor(activeProduct, measurement, percentDamage));
  }

  function onLengthSet(l: number) {
    setMeasurement({ ...measurement, l });
    onMeasurementSet && onMeasurementSet({ ...measurement, l });
  }

  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 ? (
              <View style={{flex: 1, flexDirection: "row"}}>
                <AreaInput
                  defaultValue={activeProduct.dimensions}
                  onMeasurementSet={onMeasurementSet}
                  widthLabel="enter width"
                  lengthLabel="enter length"
                  units={measurement.u}
                />
                <UnitChooser
                  choices={["in", "ft"]}
                  onUnitSet={onUnitChosen}
                  defaultUnit={activeProduct.dimensions.u}
                />
              </View>
            ) : (
              <MeasurementUnitInput
                defaultValue={activeProduct.dimensions.l}
                onValueSet={onLengthSet}
                onUnitSet={onUnitChosen}
                defaultUnit={activeProduct.dimensions.u}
                unitChoices={["ft", "in"]}
              />
            )
          ) : (
            <Text>Please select a product</Text>
          )}
        </View>
      </View>
      {activeProduct && (
        <View style={styles.damageWrapper}>
          <PercentDamage onSetPercentage={onSetPercentDamage} />
        </View>
      )}
      <ProductList onProductSelected={onProductSelected} productType="lumber" />
    </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",
    verticalAlign: "middle",
  },
  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,
  },

  damageWrapper: {
    paddingVertical: 10,
    paddingHorizontal: 10,
  },
});