(function () {
  const isHttps = location.protocol === 'https:'
  const API_BASE = isHttps ? location.origin : 'http://localhost:8976'

  function buildUrl(path) {
    if (/^https?:/.test(path)) return path
    const p = path.startsWith('/') ? path : '/' + path
    return API_BASE + p
  }

  async function request(method, path, body, opts) {
    opts = opts || {}
    const url = buildUrl(path)
    const init = {
      method: method || 'GET',
      headers: opts.headers || {},
      credentials: 'same-origin'
    }
    if (body !== null && body !== undefined) {
      if (body instanceof FormData) {
        init.body = body
      } else {
        init.headers['Content-Type'] = 'application/json'
        init.body = JSON.stringify(body)
      }
    }
    try {
      const res = await fetch(url, init)
      const text = await res.text()
      let data = null
      try { data = text ? JSON.parse(text) : null } catch { data = { ok: res.ok, raw: text } }
      if (!res.ok) {
        const msg = (data && data.error) || ('HTTP ' + res.status)
        const err = new Error(msg)
        err.status = res.status
        err.data = data
        throw err
      }
      return { ok: true, status: res.status, data }
    } catch (e) {
      const err = new Error(e.message || '请求失败')
      err.data = e.data || null
      throw err
    }
  }

  const hub = {
    async meta() {
      const res = await request('GET', '/api/mp_time_assistant/meta')
      const payload = (res && res.data) || {}
      return (payload && payload.ok) ? payload.data || {} : (payload || {})
    },
    async getState() {
      const res = await request('GET', '/api/mp_time_assistant/state')
      const payload = (res && res.data) || {}
      return (payload && payload.ok) ? payload.data || {} : (payload || {})
    },
    async setActiveKit(kitId) {
      const res = await request('PUT', '/api/mp_time_assistant/state/active-kit', { kitId })
      const payload = (res && res.data) || {}
      return (payload && payload.ok) ? payload.data || {} : (payload || {})
    }
  }

  const personalCollect = {
    async list(keyword) {
      const q = new URLSearchParams()
      if (keyword) q.set('keyword', keyword)
      const suffix = q.toString() ? '?' + q.toString() : ''
      const res = await request('GET', '/api/mp_time_assistant/kits/personal_collect/items' + suffix)
      const payload = (res && res.data) || {}
      if (payload && payload.ok) return payload.data || []
      return Array.isArray(payload) ? payload : []
    },
    async get(id) {
      const res = await request('GET', '/api/mp_time_assistant/kits/personal_collect/items/' + encodeURIComponent(id))
      const payload = (res && res.data) || {}
      return (payload && payload.ok) ? (payload.data || null) : (payload || null)
    },
    async create(payload) {
      const res = await request('POST', '/api/mp_time_assistant/kits/personal_collect/items', payload)
      const body = (res && res.data) || {}
      if (body && body.ok) return body.data || body
      throw new Error((body && body.error) || '创建失败')
    },
    async update(payload) {
      const res = await request('PUT', '/api/mp_time_assistant/kits/personal_collect/items', payload)
      const body = (res && res.data) || {}
      if (body && body.ok) return body.data || body
      throw new Error((body && body.error) || '更新失败')
    },
    async remove(id) {
      const q = new URLSearchParams({ id })
      const res = await request('DELETE', '/api/mp_time_assistant/kits/personal_collect/items?' + q.toString())
      const body = (res && res.data) || {}
      if (body && body.ok) return body
      throw new Error((body && body.error) || '删除失败')
    },
    async uploadFile(file, groupId, onProgress) {
      const form = new FormData()
      form.append('file', file)
      if (groupId) form.append('groupId', groupId)
      const url = buildUrl('/api/mp_time_assistant/kits/personal_collect/upload')
      return new Promise((resolve, reject) => {
        try {
          const xhr = new XMLHttpRequest()
          xhr.open('POST', url)
          xhr.withCredentials = true
          if (onProgress && typeof onProgress === 'function' && xhr.upload) {
            xhr.upload.addEventListener('progress', (e) => {
              if (e.lengthComputable) {
                onProgress({ loaded: e.loaded, total: e.total, percent: Math.round(e.loaded * 100 / Math.max(1, e.total)) })
              }
            })
          }
          xhr.onload = () => {
            try {
              const data = JSON.parse(xhr.responseText || '{}')
              if (xhr.status >= 200 && xhr.status < 300 && data && data.ok) {
                resolve({ ok: true, status: xhr.status, data })
              } else {
                const err = new Error((data && data.error) || ('HTTP ' + xhr.status))
                err.data = data
                reject(err)
              }
            } catch (e) {
              reject(new Error('响应解析失败: ' + e.message))
            }
          }
          xhr.onerror = () => reject(new Error('网络错误：上传失败'))
          xhr.ontimeout = () => reject(new Error('上传超时'))
          xhr.send(form)
        } catch (e) {
          reject(e)
        }
      })
    }
  }

  const fileUrl = (relPath) => {
    if (!relPath) return ''
    if (/^https?:/.test(relPath)) return relPath
    const p = relPath.startsWith('/') ? relPath : '/' + relPath
    return buildUrl(p)
  }

  window.__MPTA_API__ = {
    API_BASE,
    request,
    hub,
    personalCollect,
    fileUrl
  }
})()