import {
  View,
  Text,
  TextInput,
  ScrollView,
  ActivityIndicator,
} from "react-native";
import React, { useState, useEffect, useCallback } from "react";
import { useTailwind } from "tailwind-rn";
import { useSafeAreaInsets } from "react-native-safe-area-context";
import MediaPicker from "../../components/MediaPicker";
import Toast from "react-native-toast-message";
import { multiUpload } from "../../utils/upload";
import baseRequest from "../../utils/baseRequest";
import { generateSignature } from "../../utils/crypto";
import { Image } from "expo-image";
import { Icon } from "@rneui/themed";

export default function EditSpacePost({ navigation, route }) {
  const data = route.params.data;

  const tailwind = useTailwind();
  const insets = useSafeAreaInsets();

  const [content, setContent] = useState(data.text);
  const [isSubmitting, setIsSubmitting] = useState(false);

  //保存新添加的媒体
  const [newMeidaAssets, setNewMediaAssets] = useState([]);
  //展示旧媒体组件
  const [oldMediaAssets, setOldMediaAssets] = useState(
    data.m_type === 1
      ? data.media_component.images
      : data.media_component.videos
  );
  const DisplayOldMedia = useCallback(
    ({ url, index }) => {
      const handleDelete = () => {
        const updatedAssets = [...oldMediaAssets];
        updatedAssets.splice(index, 1);
        setOldMediaAssets(updatedAssets);
      };
      return (
        <View
          style={{
            aspectRatio: 1,
            ...tailwind("w-1/4 p-1"),
          }}
        >
          <Image
            style={tailwind("w-full h-full rounded-lg")}
            source={url}
            contentFit="cover"
            cachePolicy="disk"
          />
          <View style={tailwind("absolute top-2 right-2")}>
            <Icon
              type="ionicon"
              name="close"
              color="white"
              size={18}
              onPress={handleDelete}
              style={tailwind("bg-black rounded-full opacity-70")}
            />
          </View>
        </View>
      );
    },
    [oldMediaAssets]
  );

  //发布更新内容
  const handleSubmit = async () => {
    if (!content) {
      Toast.show({
        type: "error",
        text1: "动态内容不能为空",
        topOffset: 60,
      });
      return;
    }
    if (oldMediaAssets.length === 0 && newMeidaAssets.length === 0) {
      Toast.show({
        type: "error",
        text1: "请选择要上传的图片或视频",
        topOffset: 60,
      });
      return;
    }
    if (
      data.m_type === 1 &&
      oldMediaAssets.length + newMeidaAssets.length > 30
    ) {
      Toast.show({
        type: "error",
        text1: "最多只能上传30张照片哦！",
        topOffset: 60,
      });
      return;
    }
    if (
      data.m_type === 2 &&
      oldMediaAssets.length + newMeidaAssets.length > 1
    ) {
      Toast.show({
        type: "error",
        text1: "最多只能上传1个视频哦！",
        topOffset: 60,
      });
      return;
    }
    if (
      data.c_type === 1 &&
      data.m_type === 1 &&
      oldMediaAssets.length + newMeidaAssets.length <= data.media_visible_range
    ) {
      Toast.show({
        type: "error",
        text1: "预览图片数不得大于等于上传图片数",
        topOffset: 60,
      });
      return;
    }
    //提交数据
    if (isSubmitting) return;
    setIsSubmitting(true);
    const newMediaIds = await multiUpload(newMeidaAssets);
    const oldMediaIds = oldMediaAssets.map((item) => item.id);
    const media = {
      image_ids:
        data.m_type === 1 ? [...oldMediaIds, ...newMediaIds?.image_ids] : [],
      video_ids:
        data.m_type === 2 ? [...oldMediaIds, ...newMediaIds?.video_ids] : [],
    };
    const apiUrl = process.env.EXPO_PUBLIC_API_URL;
    try {
      const base = await baseRequest();
      const body = {
        ...base,
        id: data.id,
        c_type: data.c_type,
        m_type: data.m_type,
        text: content,
        media_component: media,
      };
      const signature = await generateSignature(body);
      const _response = await fetch(
        `${apiUrl}/api/zone_moment/update?signature=${signature}`,
        {
          method: "POST",
          headers: {
            "Content-Type": "application/json",
          },
          body: JSON.stringify(body),
        }
      );
      const _data = await _response.json();
      if (_data.ret === -1) {
        Toast.show({
          type: "error",
          text1: _data.msg,
          topOffset: 60,
        });
        return;
      }
      //提交成功后显示Toast并返回上一页
      Toast.show({
        type: "success",
        text1: "编辑成功",
        topOffset: 60,
      });
      navigation.goBack();
    } catch (error) {
      console.error(error);
    } finally {
      setIsSubmitting(false);
    }
  };

  //发布按钮
  useEffect(() => {
    navigation.setOptions({
      headerRight: () => (
        <Text
          onPress={handleSubmit}
          style={tailwind("text-[#FF669E] text-base font-medium")}
        >
          {isSubmitting ? "" : "发布"}
          {isSubmitting && <ActivityIndicator size="small" color="white" />}
        </Text>
      ),
    });
  }, [isSubmitting, handleSubmit]);

  return (
    <ScrollView
      style={{
        paddingBottom: insets.bottom,
        paddingLeft: insets.left,
        paddingRight: insets.right,
        ...tailwind("flex-1"),
      }}
    >
      <View style={tailwind("p-4")}>
        <View style={tailwind("mb-4")}>
          <Text style={tailwind("text-base font-medium text-[#F53030] mb-2")}>
            违规详情
          </Text>
          <View style={tailwind("p-4 rounded-2xl bg-[#FFFFFF1A]")}>
            {data.text_audit_opinion && (
              <Text style={tailwind("text-sm font-medium text-white")}>
                <Text style={tailwind("text-[#F53030]")}>文案违规原因：</Text>
                {data.text_audit_opinion}
              </Text>
            )}
            {data.image_audit_opinion && (
              <Text style={tailwind("text-sm font-medium text-white")}>
                <Text style={tailwind("text-[#F53030]")}>
                  图片/视频违规原因：
                </Text>
                {data.image_audit_opinion}
              </Text>
            )}
            {data.manually_review_opinion && (
              <Text style={tailwind("text-sm font-medium text-white")}>
                <Text style={tailwind("text-[#F53030]")}>运营追加：</Text>
                {data.manually_review_opinion}
              </Text>
            )}
          </View>
        </View>
        <Text style={tailwind("text-base font-medium text-white")}>
          动态内容
        </Text>
        <TextInput
          placeholder="请遵守平台准则，严禁发布违规内容"
          placeholderTextColor="#FFFFFF80"
          underlineColorAndroid="transparent"
          multiline
          textAlignVertical="top"
          onChangeText={(value) => setContent(value)}
          value={content}
          style={tailwind(
            "h-32 bg-[#FFFFFF1A] text-white rounded-2xl mt-2 mb-4 p-2"
          )}
        />
        <View style={tailwind("flex-row flex-wrap")}>
          {oldMediaAssets.map((item, index) => (
            <DisplayOldMedia key={index} url={item?.urls[0]} index={index} />
          ))}
        </View>
        <MediaPicker
          maxCount={data.m_type === 1 ? 30 : 1}
          type={data.m_type === 1 ? "image" : "video"}
          setAssets={setNewMediaAssets}
        />
      </View>
    </ScrollView>
  );
}