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 { 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(
                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 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'
                                    units={measurement.u}
                                />
                                :
                                <MeasurementInput
                                    defaultValue={activeProduct.dimensions}
                                    onValueSet={onMeasurementSet}
                                    label="enter length"
                                    units={measurement.u}
                                />

                        ) : (
                            <Text>Please select a product</Text>
                        )
                    }
                    {
                        activeProduct && <UnitChooser choices={["in", "ft"]} onChoicePressed={onUnitChosen} />
                    }
                </View>
            </View>
            {activeProduct &&
                (<View style={styles.damageWrapper}>
                    <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",
        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,
    },

});