import { app, BrowserWindow, nativeTheme, systemPreferences } from 'electron'
import {
  createMainWindow,
  createReminderWindow,
  showMainWindow
} from './windows'
import { registerIpc } from './ipc'
import { startScheduler, stopScheduler } from './scheduler'
import { createTray } from './tray'
import { flushNow, getState } from './store'
import { wasStartedHidden } from './autostart'
import { broadcastState } from './state-actions'
import { startGamesRegistry, stopGamesRegistry } from './games/registry'
import { initUpdater, stopUpdater } from './updater'
import { IPC } from '@shared/ipc'

const APP_ID = 'com.anril.exercise-reminder'

// Must be set BEFORE app.whenReady() for Windows toasts to show
// the correct app name / icon in Action Center.
app.setAppUserModelId(APP_ID)
app.setName('Exercise Reminder')

const gotLock = app.requestSingleInstanceLock()
if (!gotLock) {
  app.quit()
} else {
  app.on('second-instance', () => showMainWindow())

  app.whenReady().then(() => {
    registerIpc()
    createTray()

    const hidden = wasStartedHidden() || getState().settings.startMinimized
    createMainWindow(!hidden)
    // Pre-create the reminder window so first-trigger is instant (no load lag).
    createReminderWindow()

    startScheduler()
    startGamesRegistry().catch((err) =>
      console.error('games registry failed:', err)
    )
    initUpdater()

    nativeTheme.on('updated', () => {
      const theme = nativeTheme.shouldUseDarkColors ? 'dark' : 'light'
      for (const win of BrowserWindow.getAllWindows()) {
        if (!win.isDestroyed()) win.webContents.send(IPC.evtThemeChanged, theme)
      }
    })

    try {
      systemPreferences.on('accent-color-changed' as never, () => {
        try {
          const color = '#' + systemPreferences.getAccentColor()
          for (const win of BrowserWindow.getAllWindows()) {
            if (!win.isDestroyed())
              win.webContents.send(IPC.evtAccentChanged, color)
          }
        } catch {
          // ignore
        }
      })
    } catch {
      // older Electron / non-Windows
    }
  })

  app.on('window-all-closed', () => {
    // Keep running in tray instead of quitting when all windows closed.
    if (!getState().settings.minimizeToTray) {
      app.quit()
    }
  })

  app.on('before-quit', () => {
    stopScheduler()
    stopUpdater()
    void stopGamesRegistry()
    flushNow()
  })

  app.on('activate', () => {
    if (BrowserWindow.getAllWindows().length === 0) createMainWindow(true)
    else showMainWindow()
  })

  // Broadcast state once on ready so any prebuilt windows hydrate.
  app.whenReady().then(() => broadcastState())
}