import React, { useCallback, useRef, useState } from 'react'
import { Image, View, Text } from '@tarojs/components'
import img from '../../config/images'
import UploadSourcePopup, { sourceMap } from './upload-source-popup'
import UploadFromWx from './upload-from-wx'
import { CommonPopup } from '../'

import './index.scss'
import { uploadFileResponseData } from '@/services/uploadFiles'

export type sourceType = 'album' | 'history' | 'preset'

export type source = sourceType[]

export type CoverImageValue = {
  id: string
  url: string
  tempFilePath?: string
}

export interface UploadCoverProps {
  value: CoverImageValue[]
  onChange: (value: CoverImageValue[] | ((prev: CoverImageValue[]) => CoverImageValue[])
) => void
  source?: source
  maxCount?: number
  align?: 'center' | 'left'
}

// const values = [
//   'http://bimwe.oss-cn-shanghai.aliyuncs.com/front/ball/images/1a35ebbf-2361-44da-b338-7608561d0b31.png',
//   'http://bimwe.oss-cn-shanghai.aliyuncs.com/front/ball/images/cf5a82ba-90af-4138-a1b3-9119adcde9e0.png',
//   'http://bimwe.oss-cn-shanghai.aliyuncs.com/front/ball/images/49d7cdf0-b03c-4a0f-91c6-e7778080cfcd.png'
// ]

const mergeCoverImages = (value: CoverImageValue[], images: CoverImageValue[]) => {
  console.log(value, images, 11111)
  // 根据id来更新url, 如果id不存在，则添加到value中
  const newImages = images
  const updatedValue = value.map(item => {
    const index = images.findIndex(image => image.id === item.id)
    if (index !== -1) {
      newImages.splice(index, 1)
      return { ...item, url: images[index].url }
    }
    return item
  })
  return [...updatedValue, ...newImages]
}

export default function UploadCover(props: UploadCoverProps) {
  const {
    value = [],
    onChange = () => void 0,
    source = ['album', 'history', 'preset'] as source,
    maxCount = 9,
    align = 'center',
  } = props

  const [visible, setVisible] = useState(false)
  const uploadSourcePopupRef = useRef<{
    show: (sourceType: sourceType, maxCount: number) => void
  }>(null)

  const onAdd = useCallback((images: CoverImageValue[]) => {
    // FIXME: prev is not latest value
    onChange(prev => mergeCoverImages(prev, images))
    setVisible(false)
  }, [value])

  const onWxAdd = useCallback((images: CoverImageValue[], onFileUploaded: Promise<{ id: string, data: uploadFileResponseData }[]>) => {
    onAdd(images)
    onFileUploaded.then(res => {
      onAdd(res.map(item => ({
        id: item.id,
        url: item.data.file_path,
      })))
    })
  }, [onAdd])
  const onDelete = (image: CoverImageValue) => {
    onChange(value.filter(item => item.id !== image.id))
  }

  return (
    <>
      <CommonPopup
        visible={visible}
        onClose={() => setVisible(false)}
        round
        position="bottom"
        hideFooter
        zIndex={1000}
      >
        <View className="upload-source-popup-container" style={{ height: source.length * 56 + 52 + 'px' }}>
          {
            source.map((item) => {
              return (
                <View className="upload-source-popup-item" key={item}>
                  {
                    item === 'album' ? (
                      <UploadFromWx onAdd={onWxAdd} maxCount={maxCount - value.length} />
                    ) : (
                      <View className="upload-source-popup-item-text" onClick={() => uploadSourcePopupRef.current?.show(item, maxCount - value.length)}>
                        <Text>{sourceMap.get(item)}</Text>
                      </View>
                    )
                  }
                </View>
              )
            })
          }
        </View>
      </CommonPopup>
      <UploadSourcePopup ref={uploadSourcePopupRef} onAdd={onAdd} />
      <div className={`upload-cover-root ${value.length === 0 && align === 'center' ? 'upload-cover-act-center' : ''}`}>
        {value.length < maxCount && (
          <div className="upload-cover-act" onClick={() => setVisible(true)}>
            <Image className='upload-cover-act-icon' src={img.ICON_ADD} />
            <div className="upload-cover-text">添加活动封面</div>
          </div>
        )}
        <div className={`cover-image-list-container ${value.length === maxCount ? 'full' : ''}`}>
          <div className="cover-image-list">
            {
              value.map((item) => {
                return (
                  <View className="cover-image-item" key={item.id}>
                    <Image className="cover-image-item-image" src={item.url} />
                    <Image className="cover-image-item-delete" src={img.ICON_REMOVE} onClick={() => onDelete(item)} />
                  </View>
                )
              })
            }
          </div>
        </div>
      </div>
    </>
  );
};