import { useMessage } from 'naive-ui'
import { onMounted, onUnmounted, ref } from 'vue'
import { DEFAULT_SERVER, type OnlineIntent, type OnlineState } from '../types/online'

export function useOnlineConnection() {
  const bridge = window.screenBridge
  const message = useMessage()
  const isReady = ref(false)
  const state = ref<OnlineState>({
    server: DEFAULT_SERVER,
    currentGameId: null,
    materials: [],
    authenticated: false,
    remembered: false,
    busy: false,
    busyMessage: '',
    canCancel: false,
    games: [],
    playlists: [],
    screenId: null,
    soundEnabled: null,
    connection: 'disabled',
    error: '',
    notice: '',
    progress: null,
    preparation: { active: false, completed: 0, total: 0, downloadedBytes: 0, error: '' },
    packagesRevision: 0,
  })
  const isBusy = ref(false)
  let timer: ReturnType<typeof setInterval> | undefined
  let refreshing = false
  function accept(value: OnlineState) {
    state.value = value
    isReady.value = true
  }
  async function refresh() {
    if (!bridge || refreshing) return
    refreshing = true
    try {
      accept(await bridge.onlineState())
    } catch {
      /* Закрытие приложения не влияет на подготовленные материалы. */
    } finally {
      refreshing = false
    }
  }
  async function run(intent: OnlineIntent) {
    if (!bridge || isBusy.value) return
    isBusy.value = true
    try {
      accept(await bridge.onlineAction(intent))
    } catch (error) {
      message.error(error instanceof Error ? error.message : 'Действие не выполнено')
    } finally {
      isBusy.value = false
      await refresh()
    }
  }
  async function cancel() {
    try {
      await bridge?.onlineAction({ action: 'cancel' })
    } catch (error) {
      message.error(error instanceof Error ? error.message : 'Не удалось отменить загрузку')
    }
  }
  onMounted(async () => {
    await refresh()
    timer = setInterval(() => {
      void refresh()
    }, 500)
  })
  onUnmounted(() => clearInterval(timer))

  return { state, isReady, isBusy, run, cancel }
}