import React, { useCallback, useMemo, useState } from "react";
import { Pressable, ScrollView, Text, View } from "react-native";
import MoreMenu from "../../../components/MoreMenu";
import ProfilePicture from "../../../components/ProfilePicture";
import useNavigateToMusicDetails from "../../../hooks/useNavigateToMusicDetails";
import { Routes } from "../../../navigation";
import { navigate } from "../../../navigation/NavigationService";
import { Palette, Style } from "../../../styles";
import { FONT_FAMILY } from "../../../styles/Fonts";
import { getArtistDisplayName } from "../../../utils/artistName";
import { getProjectLikes, LIKE_TARGET } from "../../../utils/likes";
import CreateLyricsHeader from "../../Writing/components/CreateLyricsHeader";
import MusicCard from "./MusicCard";
import { defaultAvatar } from "../../../data/data";

const EmptyText = ({ text }) => (
  <View style={{ flex: 1, alignItems: "center", paddingVertical: 16 }}>
    <Text
      style={{
        fontSize: 14,
        color: Palette.white,
        fontFamily: FONT_FAMILY.InterRegular,
        opacity: 0.8,
      }}
    >
      {text}
    </Text>
  </View>
);

const SearchResultsList = ({
  selected,
  musics = [],
  musicsLoading = false,
  playbacks = [],
  playbacksLoading = false,
  users = [],
  usersLoading = false,
  onResultSelected,
  contentContainerStyle,
  style,
}) => {
  const [menuPosition, setMenuPosition] = useState(null);
  const [showMenu, setShowMenu] = useState(false);
  const [selectedProjectId, setSelectedProjectId] = useState(null);

  const navigateToMusicDetails = useNavigateToMusicDetails();

  const resolveCoverUri = useCallback(
    (project, { preferThumbnail = false } = {}) => {
      const isValid = (value) =>
        typeof value === "string" && value.trim().length > 0;
      if (!project) {
        return null;
      }

      const cover = project?.cover || {};
      const thumbnailCandidates = [
        project?.thumbnailUrl,
        project?.songThumbnailUrl,
      ].filter(isValid);

      if (preferThumbnail) {
        const preferredThumbnail = thumbnailCandidates.find(isValid);
        if (preferredThumbnail) {
          return preferredThumbnail;
        }
      }

      if (isValid(project?.coverUrl)) {
        return project.coverUrl;
      }

      const coverCandidates = [
        cover?.result,
        cover?.finalUrl,
        cover?.generatedBackground,
      ];

      if (Array.isArray(cover?.options)) {
        coverCandidates.push(
          ...cover.options.flatMap((option) => [
            option?.finalUrl,
            option?.generatedUrl,
          ]),
        );
      }

      return coverCandidates.find(isValid) || null;
    },
    [],
  );

  const handleMusicPress = (project) => {
    const didNavigate = navigateToMusicDetails({
      projectId: project?.id,
      songUrl: project?.songUrl,
      project,
    });

    if (didNavigate) {
      onResultSelected?.();
    }
  };

  const handlePlaybackPress = (project) => {
    if (!project?.id) {
      return;
    }

    navigate(Routes.Playbacks, { projectId: project.id });
    onResultSelected?.();
  };

  const handleProfilePress = (userId) => {
    navigate(Routes.SingerProfile, { userId });
    onResultSelected?.();
  };

  const musicItems = useMemo(() => {
    if (!Array.isArray(musics)) {
      return [];
    }

    if (selected === "Musiques") {
      return musics;
    }

    return musics.filter((project) => project?.hasPlayback !== true);
  }, [musics, selected]);

  const shouldShowMusics =
    (!selected && (musicItems.length > 0 || musicsLoading)) ||
    selected === "Musiques";

  const shouldShowPlaybacks =
    (!selected && (playbacks.length > 0 || playbacksLoading)) ||
    selected === "Playback";

  const shouldShowUsers =
    (!selected && (users.length > 0 || usersLoading)) || selected === "Profils";

  return (
    <View style={[{ flex: 1 }, style]}>
      <ScrollView
        contentContainerStyle={{ paddingTop: 2, ...contentContainerStyle }}
        showsVerticalScrollIndicator={false}
      >
        {shouldShowMusics && (
          <View style={{ gap: 10 }}>
            {musicItems.length > 0 && (
              <>
                {Array.isArray(musicItems) &&
                  musicItems.slice(0, 6).map((project) => (
                    <MusicCard
                      key={project.id}
                      title={project?.title || "Sans titre"}
                      subtitle={project?.userName}
                      imageUri={resolveCoverUri(project)}
                      projectId={project?.id}
                      likedBy={getProjectLikes(project, LIKE_TARGET.SONG)}
                      likeTarget={LIKE_TARGET.SONG}
                      onPress={() => handleMusicPress(project)}
                      onPressMore={(positionTop) => {
                        setSelectedProjectId(project.id);
                        setMenuPosition(positionTop);
                        setShowMenu(
                          (previous) =>
                            !previous ||
                            positionTop?.top !== (menuPosition?.top ?? null),
                        );
                      }}
                    />
                  ))}
                {musicsLoading && (
                  <Text
                    style={{
                      fontSize: 12,
                      color: Palette.white,
                      fontFamily: FONT_FAMILY.InterRegular,
                      alignSelf: "center",
                    }}
                  >
                    {"Chargement…"}
                  </Text>
                )}
              </>
            )}
            {musicItems.length === 0 && !musicsLoading && (
              <EmptyText text={"Aucune musique trouvée"} />
            )}
          </View>
        )}
        {shouldShowPlaybacks && (
          <View style={{ gap: 10, paddingTop: 10 }}>
            {playbacks.length > 0 && (
              <>
                {Array.isArray(playbacks) &&
                  playbacks.slice(0, 6).map((project) => (
                    <MusicCard
                      key={project.id}
                      title={project?.title || "Sans titre"}
                      subtitle={project?.userName}
                      imageUri={resolveCoverUri(project, {
                        preferThumbnail: true,
                      })}
                      projectId={project?.id}
                      likedBy={getProjectLikes(project, LIKE_TARGET.PLAYBACK)}
                      likeTarget={LIKE_TARGET.PLAYBACK}
                      onPress={() => handlePlaybackPress(project)}
                      onPressMore={(positionTop) => {
                        setSelectedProjectId(project.id);
                        setMenuPosition(positionTop);
                        setShowMenu(
                          (previous) =>
                            !previous ||
                            positionTop?.top !== (menuPosition?.top ?? null),
                        );
                      }}
                    />
                  ))}
                {playbacksLoading && (
                  <Text
                    style={{
                      fontSize: 12,
                      color: Palette.white,
                      fontFamily: FONT_FAMILY.InterRegular,
                      alignSelf: "center",
                    }}
                  >
                    {"Chargement…"}
                  </Text>
                )}
              </>
            )}
            {playbacks.length === 0 && !playbacksLoading && (
              <EmptyText text={"Aucun playback trouvé"} />
            )}
          </View>
        )}
        {shouldShowUsers && (
          <View style={{ paddingHorizontal: 2, paddingTop: 10 }}>
            <CreateLyricsHeader
              gradientProps={{ start: { x: 0, y: 0 }, end: { x: 0, y: 1 } }}
            >
              {users.length > 0 && (
                <View style={{ gap: 8 }}>
                  {Array.isArray(users) &&
                    users.slice(0, 5).map((user) => (
                      <Pressable
                        style={{ gap: 14, ...Style.containerRow }}
                        key={user.id}
                        onPress={() => handleProfilePress(user.id)}
                      >
                        <ProfilePicture
                          uri={user?.profilePictureURL || defaultAvatar}
                          size={60}
                          imageProps={{ priority: "high" }}
                        />
                        <Text
                          style={{
                            fontSize: 12,
                            color: Palette.white,
                            fontFamily: FONT_FAMILY.InterRegular,
                          }}
                        >
                          {getArtistDisplayName(user, "Utilisateur")}
                        </Text>
                      </Pressable>
                    ))}
                  {usersLoading && (
                    <Text
                      style={{
                        fontSize: 12,
                        color: Palette.white,
                        fontFamily: FONT_FAMILY.InterRegular,
                        alignSelf: "center",
                      }}
                    >
                      {"Chargement…"}
                    </Text>
                  )}
                </View>
              )}
              {users.length === 0 && !usersLoading && (
                <EmptyText text={"Aucun profil trouvé"} />
              )}
            </CreateLyricsHeader>
          </View>
        )}
        {selected === "Clips" && (
          <View style={{ paddingHorizontal: 2, paddingTop: 10 }}>
            <CreateLyricsHeader
              gradientProps={{ start: { x: 0, y: 0 }, end: { x: 0, y: 1 } }}
            >
              <EmptyText text={"Aucun clip trouvé"} />
            </CreateLyricsHeader>
          </View>
        )}
      </ScrollView>
      <MoreMenu
        visible={showMenu}
        top={menuPosition?.top ?? 0}
        position={menuPosition}
        onClose={() => setShowMenu(false)}
        inPlaylist={false}
        projectId={selectedProjectId}
      />
    </View>
  );
};

export default SearchResultsList;