import { useEffect, useRef, useState } from "react";
import { Image, View, ScrollView, Video } from "@tarojs/components";
import { formatSeconds, saveMediaFile } from "@/utils/index";
import PageCustom from "@/components/page-custom/index";
import NavBarNormal from "@/components/NavBarNormal/index";
import { checkPermission, showAuthModal } from "@/utils/auth";
import { uploadAndNavToGenNewAvatar } from "@/utils/avatar";
import IconPlusBig from "@/components/icon/icon-plus-big";
import IconPlayWhite24 from '@/components/icon/IconPlayWhite20'

import { deleteAvatar, fetchMyAvatars } from "@/service/storage";

import style from "./index.module.less";
import { TAvatarItem } from "@/service/storage";
import { useAgentStore, useAgentStoreActions } from "@/store/agentStore";

import Taro, { useDidShow, useUnload } from "@tarojs/taro";
import { isSuccess } from "@/utils";
import WemetaRadio from "@/components/WemetaRadio/index";
import { useModalStore } from "@/store/modalStore";
import { useLoadMoreInfinite, createKey } from "@/utils/loadMoreInfinite";
import BottomBar from "@/components/BottomBar";
import WemetaButton from "@/components/buttons/WemetaButton";

export default function Index() {
  const agent = useAgentStore((state) => state.agent);

  const { setCurrentEditAvatar } = useAgentStoreActions()
  const [scrollTop, setScrollTop] = useState(0);
  const scrollPositionRef = useRef(0);

  const { showModal } = useModalStore((state) => state.actions);

  const fetcher = async ([_url, { pageIndex, pageSize }]) => {
    const res = await fetchMyAvatars({ pageIndex: pageIndex, pageSize });
    return res.data;
  };

  const { list, loadMore, mutate } = useLoadMoreInfinite<TAvatarItem[]>(
    createKey("fetchMyAvatars"),
    fetcher
  );

  const [current, setCurrent] = useState<TAvatarItem | null>(null);

  // 选择形象
  const handleSelect = async (e: any, item: TAvatarItem) => {
    e.stopPropagation()
    console.log(item);
    if (current?.avatarId === item.avatarId) {
      setCurrent(null)
    } else {
      setCurrent(item);
    }

  };
  const handleSetBackground = () => {
    current && setCurrentEditAvatar(current)
    Taro.navigateTo({ url: '/pages/agent-avatar-confirm/index' });
  }
  const onScrollToLower = () => {
    loadMore();
    console.log("lower");
  };
  const handleCreate = () => {
    uploadAndNavToGenNewAvatar();
  };

  const handleDelete = async (e: any) => {
    e.stopPropagation()
    if (!current || !current.canDel) {
      return
    }
    showModal({
      content: <>确认删除该形象？</>,
      async onConfirm() {
        const response = await deleteAvatar(current.avatarId);
        if (isSuccess(response.status)) {
          setCurrent(null)
          mutate();
        }
      },
    });
  };

  const handlePreview = (index: number) => {

    Taro.previewMedia({
      current: index,
      //@ts-ignore
      sources: list.map((item) => {
        return {
          url: item.avatarUrl,
          type: item.isVideo ? 'video' : 'image',
        }
      }),
    })
  }
  const saveMedia = async (tmpPath: string) => {
    const res = await saveMediaFile(tmpPath, current?.isVideo);
    if (res) {
      Taro.showToast({
        title: '保存成功'
      })
      return
    }
    Taro.showToast({
      title: '保存失败'
    })
  }
  const handleDownload = async () => {
    if (!current?.avatarUrl) {
      return
    }

    // 保存至相册
    Taro.showLoading();
    const authed = await checkPermission("scope.writePhotosAlbum");
    if (!authed) {
      Taro.hideLoading();
      showAuthModal("需要您相册权限");
      return;
    }

    Taro.downloadFile({
      url: current.avatarUrl,
      success: (res) => {
        if (res.statusCode === 200) {
          saveMedia(res.tempFilePath)
        }
      },
      fail: () => {
        Taro.hideLoading();
      },
    })

  };

  useDidShow(() => {
    mutate()
  })

  useUnload(()=> {
    Taro.hideLoading()
  })

  const renderMedia = (avatar: TAvatarItem, index: number) => {
    if (avatar.isVideo) {
      return <>
        <View className={style.videoContainer} onClick={() => handlePreview(index)}>
          <Video
            controls={false}
            showCenterPlayBtn={false}
            loop={true}
            muted={true}
            objectFit="cover"
            src={avatar.avatarUrl}
            className="w-full h-full"
          />
          <View className={style.blurBg}></View>
          <View className={style.durationStatus}>
            <IconPlayWhite24 />
            <View className="text-10">{formatSeconds(Math.round(avatar.videoSeconds))}</View>
          </View>
        </View>
      </>
    }
    return <Image src={`${avatar.avatarUrl}?x-oss-process=image/quality,Q_60/format,jpg`} mode="widthFix" className="w-full" onClick={() => handlePreview(index)} />;
  };

  const renderList = () => {
    if (!list.length) {
      return (
        <>
          {/* <EmptyData type={"search"}></EmptyData> */}
        </>
      );
    }

    return list.map((avatar, index) => {
      const currentUsed = agent?.avatarUrl === avatar.avatarUrl;
      const isCurrentSelected = current?.avatarId === avatar.avatarId;
      return (
        <View
          className={`${currentUsed ? style.gridItemActived : style.gridItem}`}
        >

          <View
            className={style.selected}
            onClick={(e) => handleSelect(e, avatar)}
          >
            <WemetaRadio theme="light" checkbox checked={isCurrentSelected} />
          </View>

          {currentUsed && <View className={style.gridItemCurrentUsedMark}></View>}
          {/* <View className={style.gridItemCurrentUsedMark}></View> */}
          {!avatar.isOriginal && <View className={style.aiTips}>图片由AI生成</View>}
          {renderMedia(avatar, index)}
        </View>
      );
    });
  };

  return (
    <PageCustom>
      <NavBarNormal>历史形象</NavBarNormal>
      <View className={style.container}>
        <ScrollView
          scrollY
          onScrollToLower={onScrollToLower}
          scrollTop={scrollTop}
          onScroll={(e) => {
            scrollPositionRef.current = e.detail.scrollTop;
          }}
          style={{
            flex: 1,
            height: "100%", // 高度自适应
          }}
        >
          <View className="w-full p-16 pb-120">
            <View className={style.grid}>
              <View className={style.gridItemCreateBtn} onClick={handleCreate}>
                <View className={style.icon}>
                  <IconPlusBig></IconPlusBig>
                </View>
                <View className="pt-8 text-12 leading-20 text-gray-4">
                  创建新形象
                </View>
              </View>
              {renderList()}
            </View>
          </View>
        </ScrollView>
        <BottomBar className="pt-12 px-16">
          <WemetaButton type='danger' className="w-88 text-red" disabled={!current?.canDel} onClick={handleDelete}>删除</WemetaButton>
          <WemetaButton type='normal' className="w-102" disabled={!current} onClick={handleDownload}>下载</WemetaButton>
          <WemetaButton type="primary" className="flex-1" disabled={!current} onClick={handleSetBackground}>设置为聊天背景</WemetaButton>

        </BottomBar>
      </View>
    </PageCustom>
  );
}