import { emojiMap, emojiUrl } from './emojiMap'
/** 传入messageBody（群系统消息SystemMessage，群提示消息GroupTip除外）
 * payload = {
 *  msgType: 'TIMTextElem',
 *  msgContent: {
 *    text: 'AAA[龇牙]AAA[龇牙]AAA[龇牙AAA]'
 *  }
 *}
 **/
export function decodeText (payload) {
  let renderDom = []
  // 文本消息
    let temp = payload.text
    let left = -1
    let right = -1
    while (temp !== '') {
      left = temp.indexOf('[')
      right = temp.indexOf(']')
      switch (left) {
        case 0:
          if (right === -1) {
            renderDom.push({
              name: 'text',
              text: temp
            })
            temp = ''
          } else {
            let _emoji = temp.slice(0, right + 1)
            if (emojiMap[_emoji]) {
              renderDom.push({
                name: 'img',
                src: emojiUrl + emojiMap[_emoji]
              })
              temp = temp.substring(right + 1)
            } else {
              renderDom.push({
                name: 'text',
                text: '['
              })
              temp = temp.slice(1)
            }
          }
          break
        case -1:
          renderDom.push({
            name: 'text',
            text: temp
          })
          temp = ''
          break
        default:
          renderDom.push({
            name: 'text',
            text: temp.slice(0, left)
          })
          temp = temp.substring(left)
          break
      }
    }
  return renderDom
}