import { request, ApiError } from './request'
import type {
  CanonicalKey,
  Ch9329DescriptorState,
  ComputerUseButton,
  ComputerUseConfigResponse,
  ComputerUseConfigUpdate,
  ComputerUseSessionStatus,
  ComputerUseSessionSummary,
  ComputerUseStartRequest,
} from '@/types/generated'
import { useHidWebSocket, type HidKeyboardEvent, type HidMouseEvent } from '@/composables/useHidWebSocket'

const API_BASE = '/api'

export const authApi = {
  login: (username: string, password: string) =>
    request<{ success: boolean; message?: string }>(
      '/auth/login',
      {
        method: 'POST',
        body: JSON.stringify({ username, password }),
      },
      { toastOnError: false },
    ),

  logout: () =>
    request<{ success: boolean }>('/auth/logout', { method: 'POST' }),

  check: () =>
    request<{ authenticated: boolean; user?: string }>('/auth/check'),

  changePassword: (currentPassword: string, newPassword: string) =>
    request<{ success: boolean }>('/auth/password', {
      method: 'POST',
      body: JSON.stringify({ current_password: currentPassword, new_password: newPassword }),
    }),

  changeUsername: (username: string, currentPassword: string) =>
    request<{ success: boolean }>('/auth/username', {
      method: 'POST',
      body: JSON.stringify({ username, current_password: currentPassword }),
    }),
}

export interface NetworkAddress {
  interface: string
  ip: string
}

export interface DeviceInfo {
  hostname: string
  cpu_model: string
  cpu_usage: number
  memory_total: number
  memory_used: number
  network_addresses: NetworkAddress[]
  serial_ports: string[]
}

export interface FeatureCapability {
  available: boolean
  backends: string[]
  selected_backend?: string
  reason?: string
}

export interface PlatformCapabilities {
  mode: 'android_amlogic' | 'linux' | 'windows'
  mode_label: string
  video_capture: FeatureCapability
  encoder: FeatureCapability
  hid: FeatureCapability
  atx: FeatureCapability
  msd: FeatureCapability
  otg: FeatureCapability
  audio: FeatureCapability
  rustdesk: FeatureCapability
  vnc: FeatureCapability
  diagnostics: FeatureCapability
  extensions: FeatureCapability
  service_installation: FeatureCapability
}

export const systemApi = {
  info: () =>
    request<{
      version: string
      build_date: string
      initialized: boolean
      platform: PlatformCapabilities
      capabilities: {
        video: { available: boolean; backend?: string; reason?: string }
        hid: { available: boolean; backend?: string; reason?: string }
        msd: { available: boolean; backend?: string; reason?: string }
        atx: { available: boolean; backend?: string; reason?: string }
        audio: { available: boolean; backend?: string; reason?: string }
        rustdesk: { available: boolean; backend?: string; reason?: string }
        vnc: { available: boolean; backend?: string; reason?: string }
      }
      disk_space?: {
        total: number
        available: number
        used: number
      }
      device_info?: DeviceInfo
    }>('/info'),

  health: () => request<{ status: string; version: string }>('/health'),

  setupStatus: () =>
    request<{ initialized: boolean; needs_setup: boolean; platform: PlatformCapabilities }>('/setup'),

  setup: (data: {
    username: string
    password: string
    video_device?: string
    video_format?: string
    video_width?: number
    video_height?: number
    video_fps?: number
    hid_backend?: string
    hid_ch9329_port?: string
    hid_ch9329_baudrate?: number
    hid_otg_udc?: string
    hid_otg_profile?: string
    hid_otg_endpoint_budget?: string
    hid_otg_keyboard_leds?: boolean
    msd_enabled?: boolean
    encoder_backend?: string
    audio_device?: string
    ttyd_enabled?: boolean
    rustdesk_enabled?: boolean
  }) =>
    request<{ success: boolean; message?: string }>('/setup/init', {
      method: 'POST',
      body: JSON.stringify(data),
    }),

  restart: () =>
    request<{ success: boolean; message?: string }>('/system/restart', {
      method: 'POST',
    }),
}

export type UpdateChannel = 'stable' | 'beta'

export interface UpdateOverviewResponse {
  success: boolean
  current_version: string
  channel: UpdateChannel
  latest_version: string
  upgrade_available: boolean
  target_version?: string
  notes_between: Array<{
    version: string
    published_at: string
    notes: string[]
  }>
}

export interface UpdateStatusResponse {
  success: boolean
  phase: 'idle' | 'checking' | 'downloading' | 'verifying' | 'installing' | 'restarting' | 'success' | 'failed'
  progress: number
  current_version: string
  target_version?: string
  message?: string
  last_error?: string
}

export const updateApi = {
  overview: (channel: UpdateChannel = 'stable') =>
    request<UpdateOverviewResponse>(
      `/update/overview?channel=${encodeURIComponent(channel)}`,
      {},
      { toastOnError: false },
    ),

  upgrade: (payload: { channel?: UpdateChannel; target_version?: string }) =>
    request<{ success: boolean; message?: string }>('/update/upgrade', {
      method: 'POST',
      body: JSON.stringify(payload),
    }),

  status: () =>
    request<UpdateStatusResponse>('/update/status'),
}

export interface VideoCodecInfo {
  id: string
  name: string
  protocol: 'http' | 'webrtc'
  hardware: boolean
  backend: string | null
  available: boolean
}

export interface EncoderBackendInfo {
  id: string
  name: string
  is_hardware: boolean
  supported_formats: string[]
}

export interface AvailableCodecsResponse {
  success: boolean
  backends: EncoderBackendInfo[]
  codecs: VideoCodecInfo[]
}

export interface StreamConstraintsResponse {
  success: boolean
  allowed_codecs: string[]
  locked_codec: string | null
  disallow_mjpeg: boolean
  sources: {
    rustdesk: boolean
    rtsp: boolean
    vnc: boolean
  }
  reason: string
  current_mode: string
}

export interface VideoEncoderSelfCheckCodec {
  id: string
  name: string
}

export interface VideoEncoderSelfCheckCell {
  codec_id: string
  ok: boolean
  elapsed_ms?: number | null
}

export interface VideoEncoderSelfCheckRow {
  resolution_id: string
  resolution_label: string
  width: number
  height: number
  cells: VideoEncoderSelfCheckCell[]
}

export interface VideoEncoderSelfCheckResponse {
  current_hardware_encoder: string
  codecs: VideoEncoderSelfCheckCodec[]
  rows: VideoEncoderSelfCheckRow[]
}

export const streamApi = {
  status: () =>
    request<{
      state:
        | 'uninitialized'
        | 'ready'
        | 'streaming'
        | 'no_signal'
        | 'no_cable'
        | 'no_sync'
        | 'out_of_range'
        | 'device_lost'
        | 'recovering'
        | 'device_busy'
        | 'error'
      device: string | null
      format: string | null
      resolution: [number, number] | null
      clients: number
      target_fps: number
      fps: number
    }>('/stream/status'),

  start: () =>
    request<{ success: boolean }>('/stream/start', { method: 'POST' }),

  stop: () =>
    request<{ success: boolean }>('/stream/stop', { method: 'POST' }),

  getMjpegUrl: (clientId?: string) => {
    const base = `${API_BASE}/stream/mjpeg`
    return clientId ? `${base}?client_id=${clientId}` : base
  },

  getSnapshotUrl: () => `${API_BASE}/snapshot`,

  getMode: () =>
    request<{ success: boolean; mode: string; transition_id?: string; switching?: boolean; message?: string }>('/stream/mode'),

  setMode: (mode: string) =>
    request<{ success: boolean; mode: string; transition_id?: string; switching?: boolean; message?: string }>('/stream/mode', {
      method: 'POST',
      body: JSON.stringify({ mode }),
    }),

  getCodecs: () =>
    request<AvailableCodecsResponse>('/stream/codecs'),

  getConstraints: () =>
    request<StreamConstraintsResponse>('/stream/constraints'),

  encoderSelfCheck: () =>
    request<VideoEncoderSelfCheckResponse>('/video/encoder/self-check'),

  setBitratePreset: (bitrate_preset: import('@/types/generated').BitratePreset) =>
    request<{ success: boolean; message?: string }>('/stream/bitrate', {
      method: 'POST',
      body: JSON.stringify({ bitrate_preset }),
    }),
}

export interface IceCandidate {
  candidate: string
  sdpMid?: string
  sdpMLineIndex?: number
  usernameFragment?: string
}

export interface IceServerConfig {
  urls: string[]
  username?: string
  credential?: string
}

export const webrtcApi = {
  createSession: () =>
    request<{ session_id: string }>('/webrtc/session', { method: 'POST' }),

  offer: (sdp: string) =>
    request<{ sdp: string; session_id: string; ice_candidates: IceCandidate[] }>('/webrtc/offer', {
      method: 'POST',
      body: JSON.stringify({ sdp }),
    }),

  addIceCandidate: (sessionId: string, candidate: IceCandidate) =>
    request<{ success: boolean }>('/webrtc/ice', {
      method: 'POST',
      body: JSON.stringify({ session_id: sessionId, candidate }),
    }),

  status: () =>
    request<{
      session_count: number
      sessions: Array<{ session_id: string; state: string }>
    }>('/webrtc/status'),

  close: (sessionId: string) =>
    request<{ success: boolean }>('/webrtc/close', {
      method: 'POST',
      body: JSON.stringify({ session_id: sessionId }),
    }),

  getIceServers: () =>
    request<{ ice_servers: IceServerConfig[]; mdns_mode: string }>('/webrtc/ice-servers'),
}

const hidWs = useHidWebSocket()
let hidWsInitialized = false

async function ensureHidConnection() {
  if (!hidWsInitialized) {
    hidWsInitialized = true
    await hidWs.connect()
  }
}

function mapButton(button?: 'left' | 'right' | 'middle'): number | undefined {
  if (!button) return undefined
  const buttonMap = { left: 0, middle: 1, right: 2 }
  return buttonMap[button]
}

export const hidApi = {
  status: () =>
    request<{
      available: boolean
      backend: string
      initialized: boolean
      online: boolean
      supports_absolute_mouse: boolean
      keyboard_leds_enabled: boolean
      led_state: {
        num_lock: boolean
        caps_lock: boolean
        scroll_lock: boolean
        compose: boolean
        kana: boolean
      }
      screen_resolution: [number, number] | null
      device: string | null
      error: string | null
      error_code: string | null
    }>('/hid/status'),

  otgSelfCheck: () =>
    request<{
      overall_ok: boolean
      error_count: number
      warning_count: number
      hid_backend: string
      selected_udc: string | null
      bound_udc: string | null
      udc_state: string | null
      udc_speed: string | null
      available_udcs: string[]
      other_gadgets: string[]
      checks: Array<{
        id: string
        ok: boolean
        level: 'info' | 'warn' | 'error'
        message: string
        hint?: string
        path?: string
      }>
    }>('/hid/otg/self-check'),

  keyboard: async (type: 'down' | 'up', key: CanonicalKey, modifier?: number) => {
    await ensureHidConnection()
    const event: HidKeyboardEvent = {
      type: type === 'down' ? 'keydown' : 'keyup',
      key,
      modifier: (modifier ?? 0) & 0xff,
    }
    await hidWs.sendKeyboard(event)
    return { success: true }
  },

  mouse: async (data: {
    type: 'move' | 'move_abs' | 'down' | 'up' | 'scroll'
    x?: number | null
    y?: number | null
    button?: 'left' | 'right' | 'middle' | null
    scroll?: number | null
  }) => {
    await ensureHidConnection()
    const event: HidMouseEvent = {
      type: data.type === 'move_abs' ? 'moveabs' : data.type,
      x: data.x ?? undefined,
      y: data.y ?? undefined,
      button: mapButton(data.button ?? undefined),
      scroll: data.scroll ?? undefined,
    }
    await hidWs.sendMouse(event)
    return { success: true }
  },

  reset: () =>
    request<{ success: boolean }>('/hid/reset', { method: 'POST' }),

  ch9329Descriptor: (params?: { port?: string; baudRate?: number }) => {
    const query = new URLSearchParams()
    if (params?.port) query.set('port', params.port)
    if (params?.baudRate) query.set('baud_rate', String(params.baudRate))
    const suffix = query.toString()
    return request<Ch9329DescriptorState>(`/hid/ch9329/descriptor${suffix ? `?${suffix}` : ''}`)
  },

  consumer: async (usage: number) => {
    await ensureHidConnection()
    await hidWs.sendConsumer({ usage })
    return { success: true }
  },

  connectWebSocket: () => hidWs.connect(),
  disconnectWebSocket: () => hidWs.disconnect(),
  isWebSocketConnected: () => hidWs.connected.value,
}

export type ComputerUseStatus = ComputerUseSessionStatus

export type ComputerUseAction =
  | { type: 'click'; x: number; y: number; button?: ComputerUseButton }
  | { type: 'double_click'; x: number; y: number; button?: ComputerUseButton }
  | { type: 'move'; x: number; y: number }
  | { type: 'drag'; path: Array<{ x: number; y: number }>; button?: ComputerUseButton }
  | { type: 'scroll'; x: number; y: number; dx?: number; dy?: number }
  | { type: 'type'; text: string }
  | { type: 'keypress'; keys: string[] }
  | { type: 'wait'; ms: number }
  | { type: 'screenshot' }

export type ComputerUseConversationMessage =
  | { role: 'user'; text: string }
  | { role: 'assistant'; text: string }

export type ComputerUseConfig = ComputerUseConfigResponse

export type ComputerUseSession = ComputerUseSessionSummary

export const computerUseApi = {
  config: () => request<ComputerUseConfig>('/config/computer-use'),

  updateConfig: (data: ComputerUseConfigUpdate) =>
    request<ComputerUseConfig>('/config/computer-use', {
      method: 'PATCH',
      body: JSON.stringify(data),
    }),

  session: () => request<ComputerUseSession>('/computer-use/session'),

  start: (data: ComputerUseStartRequest) =>
    request<ComputerUseSession>('/computer-use/session', {
      method: 'POST',
      body: JSON.stringify(data),
    }),

  stop: () =>
    request<ComputerUseSession>('/computer-use/session/stop', {
      method: 'POST',
    }),
}

export const atxApi = {
  status: () =>
    request<{
      available: boolean
      backend: string
      initialized: boolean
      power_status: 'on' | 'off' | 'unknown'
      led_supported: boolean
      hdd_status: 'active' | 'inactive' | 'unknown'
      hdd_supported: boolean
    }>('/atx/status'),

  power: (action: 'short' | 'long' | 'reset') =>
    request<{ success: boolean; message?: string }>('/atx/power', {
      method: 'POST',
      body: JSON.stringify({ action }),
    }),
}

export interface MsdImage {
  id: string
  name: string
  size: number
  created_at: string
}

export interface DriveFile {
  name: string
  path: string
  is_dir: boolean
  size: number
}

export const msdApi = {
  status: () =>
    request<{
      available: boolean
      state: {
        connected: boolean
        mode: 'none' | 'image' | 'drive'
        current_image: {
          id: string
          name: string
          size: number
          created_at: string
        } | null
        drive_info: {
          size: number
          used: number
          free: number
          initialized: boolean
        } | null
      }
    }>('/msd/status'),

  listImages: () => request<MsdImage[]>('/msd/images'),

  uploadImage: async (file: File, onProgress?: (progress: number) => void) => {
    const formData = new FormData()
    formData.append('file', file)

    const xhr = new XMLHttpRequest()
    xhr.open('POST', `${API_BASE}/msd/images`)
    xhr.withCredentials = true

    return new Promise<MsdImage>((resolve, reject) => {
      xhr.upload.onprogress = (e) => {
        if (e.lengthComputable && onProgress) {
          onProgress((e.loaded / e.total) * 100)
        }
      }

      xhr.onload = () => {
        if (xhr.status >= 200 && xhr.status < 300) {
          resolve(JSON.parse(xhr.responseText))
        } else {
          reject(new ApiError(xhr.status, 'Upload failed'))
        }
      }

      xhr.onerror = () => reject(new ApiError(0, 'Network error'))
      xhr.send(formData)
    })
  },

  deleteImage: (id: string) =>
    request<{ success: boolean }>(`/msd/images/${id}`, { method: 'DELETE' }),

  connect: (mode: 'image' | 'drive', imageId?: string, cdrom?: boolean, readOnly?: boolean) =>
    request<{ success: boolean }>('/msd/connect', {
      method: 'POST',
      body: JSON.stringify({ mode, image_id: imageId, cdrom, read_only: readOnly }),
    }),

  disconnect: () =>
    request<{ success: boolean }>('/msd/disconnect', { method: 'POST' }),

  driveInfo: () =>
    request<{
      size: number
      used: number
      free: number
      initialized: boolean
    }>('/msd/drive', {}, { toastOnError: false }),

  initDrive: (sizeMb?: number) =>
    request<{
      size: number
      used: number
      free: number
      initialized: boolean
    }>(
      '/msd/drive/init',
      {
        method: 'POST',
        body: JSON.stringify({ size_mb: sizeMb }),
      },
      { toastOnError: false },
    ),

  deleteDrive: () =>
    request<{ success: boolean }>('/msd/drive', { method: 'DELETE' }),

  listDriveFiles: (path = '/') =>
    request<DriveFile[]>(
      `/msd/drive/files?path=${encodeURIComponent(path)}`,
      {},
      { toastOnError: false },
    ),

  uploadDriveFile: async (file: File, targetPath = '/', onProgress?: (progress: number) => void) => {
    const formData = new FormData()
    formData.append('file', file)

    const xhr = new XMLHttpRequest()
    xhr.open('POST', `${API_BASE}/msd/drive/files?path=${encodeURIComponent(targetPath)}`)
    xhr.withCredentials = true

    return new Promise<{ success: boolean; message?: string }>((resolve, reject) => {
      xhr.upload.onprogress = (e) => {
        if (e.lengthComputable && onProgress) {
          onProgress((e.loaded / e.total) * 100)
        }
      }

      xhr.onload = () => {
        if (xhr.status >= 200 && xhr.status < 300) {
          resolve(JSON.parse(xhr.responseText))
        } else {
          reject(new ApiError(xhr.status, 'Upload failed'))
        }
      }

      xhr.onerror = () => reject(new ApiError(0, 'Network error'))
      xhr.send(formData)
    })
  },

  downloadDriveFile: (path: string) =>
    `${API_BASE}/msd/drive/files${encodeDrivePath(path)}`,

  deleteDriveFile: (path: string) =>
    request<{ success: boolean }>(`/msd/drive/files${encodeDrivePath(path)}`, {
      method: 'DELETE',
    }),

  createDirectory: (path: string) =>
    request<{ success: boolean }>(`/msd/drive/mkdir${encodeDrivePath(path)}`, {
      method: 'POST',
    }),

  downloadFromUrl: (url: string, filename?: string) =>
    request<{
      download_id: string
      url: string
      filename: string
      bytes_downloaded: number
      total_bytes: number | null
      progress_pct: number | null
      status: string
      error: string | null
    }>('/msd/images/download', {
      method: 'POST',
      body: JSON.stringify({ url, filename }),
    }),

  cancelDownload: (downloadId: string) =>
    request<{ success: boolean }>('/msd/images/download/cancel', {
      method: 'POST',
      body: JSON.stringify({ download_id: downloadId }),
    }),
}

interface SerialDeviceOption {
  path: string
  name: string
}

function encodeDrivePath(path: string): string {
  if (path === '' || path === '/') {
    return '/'
  }

  const hasLeadingSlash = path.startsWith('/')
  const hasTrailingSlash = path.endsWith('/')
  const encodedSegments = path
    .split('/')
    .filter(Boolean)
    .map(segment => encodeURIComponent(segment))
    .join('/')

  return `${hasLeadingSlash ? '/' : ''}${encodedSegments}${hasTrailingSlash ? '/' : ''}`
}

function getSerialDevicePriority(path: string): number {
  if (/^\/dev\/ttyUSB/i.test(path)) return 0
  if (/^\/dev\/(ttyS|S)/i.test(path)) return 2
  return 1
}

function sortSerialDevices(serialDevices: SerialDeviceOption[]): SerialDeviceOption[] {
  return [...serialDevices].sort((a, b) => {
    const priorityDiff = getSerialDevicePriority(a.path) - getSerialDevicePriority(b.path)
    if (priorityDiff !== 0) return priorityDiff
    return a.path.localeCompare(b.path, undefined, { numeric: true, sensitivity: 'base' })
  })
}

export const configApi = {
  listDevices: async () => {
    const result = await request<{
      video: Array<{
        path: string
        name: string
        driver: string
        formats: Array<{
          format: string
          description: string
          resolutions: Array<{
            width: number
            height: number
            fps: number[]
          }>
        }>
        usb_bus: string | null
        has_signal: boolean
      }>
      serial: Array<{ path: string; name: string }>
      audio: Array<{
        name: string
        description: string
        is_hdmi: boolean
        usb_bus: string | null
      }>
      udc: Array<{ name: string }>
      extensions: {
        ttyd_available: boolean
        rustdesk_available: boolean
      }
    }>('/devices')

    return {
      ...result,
      serial: sortSerialDevices(result.serial),
    }
  },
}

export {
  authConfigApi,
  videoConfigApi,
  streamConfigApi,
  hidConfigApi,
  msdConfigApi,
  atxConfigApi,
  audioConfigApi,
  extensionsApi,
  redfishConfigApi,
  rustdeskConfigApi,
  rtspConfigApi,
  vncConfigApi,
  webConfigApi,
  type RustDeskConfigResponse,
  type RustDeskStatusResponse,
  type RustDeskConfigUpdate,
  type RustDeskPasswordResponse,
  type RtspConfigResponse,
  type RedfishConfigResponse,
  type RedfishConfigUpdate,
  type RtspConfigUpdate,
  type RtspStatusResponse,
  type VncConfigResponse,
  type VncConfigUpdate,
  type VncEncoding,
  type VncStatusResponse,
  type WebConfig,
  type WebConfigUpdate,
} from './config'

export type {
  AppConfig,
  AuthConfig,
  AuthConfigUpdate,
  VideoConfig,
  VideoConfigUpdate,
  StreamConfig,
  StreamConfigUpdate,
  HidConfig,
  HidConfigUpdate,
  MsdConfig,
  MsdConfigUpdate,
  AtxConfig,
  AtxConfigUpdate,
  AudioConfig,
  AudioConfigUpdate,
  HidBackend,
  StreamMode,
  EncoderType,
  BitratePreset,
  ComputerUseButton,
  ComputerUseConfigResponse,
  ComputerUseConfigUpdate,
  ComputerUseScreenshot,
  ComputerUseSessionStatus,
  ComputerUseSessionSummary,
  ComputerUseStartRequest,
} from '@/types/generated'

export const audioApi = {
  status: () =>
    request<{
      enabled: boolean
      streaming: boolean
      device: string | null
      sample_rate: number
      channels: number
      quality: string
      subscriber_count: number
      frames_encoded: number
      bytes_output: number
      error: string | null
    }>('/audio/status'),

  start: () =>
    request<{ success: boolean }>('/audio/start', { method: 'POST' }),

  stop: () =>
    request<{ success: boolean }>('/audio/stop', { method: 'POST' }),

  setQuality: (quality: 'voice' | 'balanced' | 'high') =>
    request<{ success: boolean }>('/audio/quality', {
      method: 'POST',
      body: JSON.stringify({ quality }),
    }),

  selectDevice: (device: string) =>
    request<{ success: boolean }>('/audio/device', {
      method: 'POST',
      body: JSON.stringify({ device }),
    }),
}

export interface UsbDeviceInfo {
  bus_num: number
  dev_num: number
  id_vendor: string
  id_product: string
  product?: string
  manufacturer?: string
  speed?: string
  authorized?: boolean
  video_device?: string
}

export const usbApi = {
  listDevices: () =>
    request<UsbDeviceInfo[]>('/devices/usb'),

  resetDevice: (busNum: number, devNum: number) =>
    request<{ success: boolean; message: string }>('/devices/usb/reset', {
      method: 'POST',
      body: JSON.stringify({ bus_num: busNum, dev_num: devNum }),
    }),
}

export { ApiError }