import { Image as ExpoImage } from "expo-image";
import React, { useCallback, useMemo, useState } from "react";
import { Pressable, Text, View } from "react-native";
import useMinuit from "react-native-minuit/src/hooks/useMinuit.js";
import { background } from "../../assets";
import GradientButton from "../../components/GradientButton";
import MusicLandHeader from "../../components/MusicLandHeader";
import { isWeb } from "../../hooks/useLayoutType";
import Page from "../../layouts/Page";
import { Routes } from "../../navigation";
import { goBack, navigate } from "../../navigation/NavigationService";
import { useUserData } from "../../providers/UserDataProvider";
import { gutters, Palette, Style } from "../../styles";
import { getStageAction } from "../../utils/projectStages";
import CreateLyricsHeader from "../Writing/components/CreateLyricsHeader";

const ValidateCover = () => {
  const { selectedProject, updateProjectData } = useUserData();
  const { setIsLoading } = useMinuit();

  const coverOptions = useMemo(() => {
    if (!Array.isArray(selectedProject?.cover?.options)) {
      return [];
    }
    return selectedProject.cover.options.filter((option) => option);
  }, [selectedProject]);

  const selectedOptionId = selectedProject?.cover?.selectedOptionId || null;
  const selectedOption = useMemo(() => {
    if (!coverOptions.length) {
      return null;
    }
    const found = coverOptions.find(
      (option) => option?.id === selectedOptionId
    );
    return found || coverOptions[0] || null;
  }, [coverOptions, selectedOptionId]);

  const isMultipleOptions = coverOptions.length > 1;
  const [isSelecting, setIsSelecting] = useState(false);

  async function onStartAgain() {
    try {
      await setIsLoading(true);
      await updateProjectData({
        cover: null,
        coverUrl: null,
      });
      navigate(Routes.ChooseCoverType);
    } catch (e) {
      console.log(e);
    } finally {
      await setIsLoading(false);
    }
  }

  const handleSelectOption = useCallback(
    async (option) => {
      if (!option || option?.id === selectedOptionId || isSelecting) {
        return;
      }
      const existingCover = selectedProject?.cover || {};
      const finalUrl = option.finalUrl || option.generatedUrl || null;
      setIsSelecting(true);
      try {
        await updateProjectData({
          cover: {
            ...existingCover,
            options: coverOptions,
            selectedOptionId: option.id,
            result: finalUrl,
            generatedBackground: option.generatedUrl || option.finalUrl || null,
          },
        });
      } catch (e) {
        console.log("ValidateCover: unable to select cover", e?.message);
      } finally {
        setIsSelecting(false);
      }
    },
    [
      coverOptions,
      isSelecting,
      selectedOptionId,
      selectedProject,
      updateProjectData,
    ]
  );

  async function onValidatePicture() {
    if (!selectedOption) {
      return;
    }
    try {
      await setIsLoading(true);
      const existingCover = selectedProject?.cover || {};
      const finalUrl =
        selectedOption.finalUrl || selectedOption.generatedUrl || null;
      const nextCoverData = {
        ...existingCover,
        options: coverOptions,
        selectedOptionId: selectedOption.id,
        result: finalUrl,
        generatedBackground:
          selectedOption.generatedUrl || selectedOption.finalUrl || null,
      };
      await updateProjectData({
        cover: nextCoverData,
        coverUrl: finalUrl,
      });
      const projectForStage = {
        ...selectedProject,
        cover: nextCoverData,
        coverUrl: finalUrl,
      };
      const playbackStage = getStageAction("director", projectForStage);
      await setIsLoading(false);
      const targetRoute = playbackStage?.route || Routes.Playback;
      const params = playbackStage?.params || { project: projectForStage };
      navigate(targetRoute, params);
      return;
    } catch (e) {
      console.log(e);
    } finally {
      await setIsLoading(false);
    }
  }

  return (
    <Page backgroundImg={background.studioBG2} headerType="NONE">
      <MusicLandHeader onPressBack={goBack} progress={90} />
      <View style={{ flex: 1, marginTop: 16 }}>
        <CreateLyricsHeader
          title="Ta pochette est prête!"
          subTitle="Choisis ta version préférée."
        />
        <View style={{ flex: 1, ...Style.containerCenter }}>
          <View
            style={{
              width: "90%",
              gap: 16,
              flexDirection: isMultipleOptions ? "row" : "column",
              flexWrap: isMultipleOptions ? "wrap" : "nowrap",
              justifyContent: "center",
              alignItems: isMultipleOptions ? "stretch" : "center",
            }}
          >
            {coverOptions.map((option, index) => {
              const isSelected = option?.id === selectedOption?.id;
              const imageSource =
                option?.finalUrl || option?.generatedUrl || null;

              if (!imageSource) {
                return null;
              }

              return (
                <Pressable
                  key={option?.id || index}
                  onPress={() => handleSelectOption(option)}
                  disabled={isSelecting}
                  style={{
                    borderRadius: 20,
                    borderWidth: isSelected ? 2 : 1,
                    borderColor: isSelected
                      ? Palette.primary
                      : Palette.ultraLightWhite,
                    overflow: "hidden",
                    width: isMultipleOptions
                      ? isWeb
                        ? 280
                        : "48%"
                      : isWeb
                        ? 300
                        : "90%",
                    maxWidth: isWeb ? 320 : "100%",
                    position: "relative",
                  }}
                >
                  <ExpoImage
                    source={{ uri: imageSource }}
                    cachePolicy="memory-disk"
                    contentFit="cover"
                    transition={120}
                    style={{ width: "100%", aspectRatio: 1 }}
                  />
                  <View
                    style={{
                      position: "absolute",
                      top: 12,
                      right: 12,
                      backgroundColor: Palette.transparentBlack,
                      paddingHorizontal: 10,
                      paddingVertical: 6,
                      borderRadius: 12,
                    }}
                  >
                    <Text
                      style={{
                        color: Palette.white,
                        fontWeight: "600",
                        fontSize: 12,
                      }}
                    >
                      {`Option ${index + 1}`}
                    </Text>
                  </View>
                  {isSelected && (
                    <View
                      style={{
                        position: "absolute",
                        bottom: 12,
                        left: 12,
                        backgroundColor: Palette.primary,
                        paddingHorizontal: 12,
                        paddingVertical: 6,
                        borderRadius: 12,
                      }}
                    >
                      <Text
                        style={{
                          color: Palette.white,
                          fontWeight: "600",
                          fontSize: 12,
                        }}
                      >
                        Sélectionnée
                      </Text>
                    </View>
                  )}
                </Pressable>
              );
            })}
            {!coverOptions.length && (
              <Text
                style={{
                  color: Palette.white,
                  textAlign: "center",
                  opacity: 0.8,
                }}
              >
                Les options de pochette seront disponibles à la fin de la
                génération.
              </Text>
            )}
          </View>
        </View>
      </View>
      <View
        style={{
          paddingBottom: gutters * 2,
          width: "80%",
          alignSelf: "center",
          gap: 12,
        }}
      >
        {/* <BorderGradientButton
          title="Recommencer la création"
          onPress={onStartAgain}
        /> */}
        <GradientButton
          title="Valider la pochette"
          onPress={onValidatePicture}
          disabled={!selectedOption || isSelecting}
        />
      </View>
    </Page>
  );
};

export default ValidateCover;