[Feature Request] 导入导出 IndexedDB 中存储的数据 about nhentai-helper HOT 1 CLOSED

  // 创建 input 元素选择 json 文件
  static async loadJSONFile<T>(): Promise<T> {
    return new Promise<T>((resolve, reject) => {
      const i = document.createElement('input')
      i.setAttribute('type', 'file')
      i.setAttribute('accept', 'application/json')
      i.onchange = () => {
        if (i.files && i.files.length > 0) {
          // 读取文件内容
          const file = new FileReader()
          file.readAsText(i.files[0])
          file.onload = () => {
            const str = file.result as string
            let result: T
            try {
              result = JSON.parse(str)
              // if((result as any).constructor !== Object){
              // 允许是对象 {} 或者数组 []
              if (result === null || typeof result !== 'object') {
                const msg = 'Data is not an object!'
                return reject(new Error(msg))
              }
              return resolve(result)
            } catch (error) {
              const msg = 'JSON parse error!'
              return reject(new Error(msg))
            }
          }
        }
      }

      i.click()
    })
  }