/**
 * 小程序统一文件上传（卡若创业派对）
 *
 * 必须调用 soul-api：`POST /api/miniprogram/upload`（multipart：file + folder）。
 * 禁止在小程序内配置 OSS AK/SK 或直传阿里云；对象存储由服务端按
 * 「管理端 → 系统设置 → OSS」中的 oss_config 优先写 OSS；未配置或失败时服务端自动落本地 uploads/。
 *
 * @param {{ filePath: string, folder?: string, fileFieldName?: string }} opts
 * @returns {Promise<{ success: boolean, url?: string, data?: { url?: string } }>}
 */
function getUploadUrl(app) {
  const base = String((app && app.globalData && app.globalData.baseUrl) || '').replace(/\/$/, '')
  return base + '/api/miniprogram/upload'
}

function uploadByApi(opts) {
  const { filePath, folder = 'avatars', fileFieldName = 'file' } = opts || {}
  if (!filePath) {
    return Promise.reject(new Error('缺少文件路径'))
  }
  const app = getApp()
  const url = getUploadUrl(app)
  const token = wx.getStorageSync('token')
  const header = {}
  if (token) {
    header.Authorization = `Bearer ${token}`
  }
  return new Promise((resolve, reject) => {
    wx.uploadFile({
      url,
      filePath,
      name: fileFieldName,
      formData: { folder },
      header,
      success: (res) => {
        try {
          const data = typeof res.data === 'string' ? JSON.parse(res.data) : res.data
          if (data && data.success) resolve(data)
          else reject(new Error((data && data.error) || '上传失败'))
        } catch (_) {
          reject(new Error('解析上传响应失败'))
        }
      },
      fail: (err) => {
        const msg = (err && err.errMsg) || '网络错误'
        reject(new Error(msg))
      },
    })
  })
}

module.exports = {
  uploadByApi,
  getUploadUrl,
}