import { app, BrowserWindow, Menu, ipcMain } from 'electron'
import { createRequire } from 'node:module'
import { fileURLToPath } from 'node:url'
import path from 'node:path'
import { MpvController } from './mpvController'

// @ts-ignore
const require = createRequire(import.meta.url)
const __dirname = path.dirname(fileURLToPath(import.meta.url))

process.env.APP_ROOT = path.join(__dirname, '..')

export const VITE_DEV_SERVER_URL = process.env['VITE_DEV_SERVER_URL']
export const MAIN_DIST = path.join(process.env.APP_ROOT, 'dist-electron')
export const RENDERER_DIST = path.join(process.env.APP_ROOT, 'dist')

process.env.VITE_PUBLIC = VITE_DEV_SERVER_URL ? path.join(process.env.APP_ROOT, 'public') : RENDERER_DIST

let win: BrowserWindow | null
let mpv: MpvController | null

// === Electron 窗口逻辑 ===

function createWindow() {
    win = new BrowserWindow({
        frame: false,
        minWidth: 950,
        minHeight: 800,
        width: 1000,
        height: 800,
        icon: path.join(process.env.VITE_PUBLIC, 'electron-vite.svg'),
        webPreferences: {
            preload: path.join(__dirname, 'preload.mjs'),
            // nodeIntegration: false,
            // contextIsolation: true,
        },
    })

    win.webContents.on('did-finish-load', () => {
        win?.webContents.send('main-process-message', new Date().toLocaleString())
    })

    if (VITE_DEV_SERVER_URL) {
        win.loadURL(VITE_DEV_SERVER_URL)
    } else {
        win.loadFile(path.join(RENDERER_DIST, 'index.html'))
    }

    registerZoomShortcuts(win)
}

// === IPC 监听 ===

ipcMain.on('window-minimize', (event) => BrowserWindow.fromWebContents(event.sender)?.minimize())
ipcMain.on('window-maximize', () => win?.isMaximized() ? win.unmaximize() : win?.maximize())
ipcMain.on('window-close', () => win?.close())
ipcMain.handle('window-is-maximized', () => win?.isMaximized() || false)

// --- MPV IPC Handlers ---
ipcMain.handle('mpv-command', async (_, command: any[]) => {
    if (mpv) {
        mpv.send(command)
    }
})

// Quick Helpers
ipcMain.handle('mpv-load', (_, url) => mpv?.load(url))
ipcMain.handle('mpv-play', () => mpv?.play())
ipcMain.handle('mpv-pause', () => mpv?.pause())
ipcMain.handle('mpv-toggle-pause', () => mpv?.togglePause())
ipcMain.handle('mpv-stop', () => mpv?.stop())
ipcMain.handle('mpv-set-volume', (e, vol) => mpv?.setVolume(vol))
ipcMain.handle('mpv-seek', (_, time) => mpv?.seek(time))


app.on('window-all-closed', () => {
    if (process.platform !== 'darwin') {
        app.quit()
        win = null
    }
})

app.on('will-quit', () => {
    if (mpv) {
        mpv.destroy()
    }
})

function registerZoomShortcuts(win: BrowserWindow) {
    win.webContents.on('before-input-event', (event, input) => {
        if (input.control || input.meta) {
            if (input.key.toLowerCase() === '=' || input.key === '+') {
                let currentZoom = win.webContents.getZoomFactor();
                win.webContents.setZoomFactor(currentZoom + 0.1);
                event.preventDefault();
            } else if (input.key === '-' || input.key === '_') {
                let currentZoom = win.webContents.getZoomFactor();
                // Limit minimum zoom to avoid making it too small to see
                if (currentZoom > 0.5) {
                    win.webContents.setZoomFactor(currentZoom - 0.1);
                }
                event.preventDefault();
            } else if (input.key === '0') {
                win.webContents.setZoomFactor(1);
                event.preventDefault();
            }
        }
    });
}

app.on('activate', () => {
    if (BrowserWindow.getAllWindows().length === 0) {
        createWindow()
    }
})

app.whenReady().then(() => {
    Menu.setApplicationMenu(null)
    createWindow()

    // Start MPV
    mpv = new MpvController()
    mpv.start()

    mpv.on('event', (data) => {
        // Forward MPV events to Render Process
        if (win && !win.isDestroyed()) {
            win.webContents.send('mpv-event', data)
        }
    })
})