const {
  BrowserWindow,
  Menu,
  MenuItem,
  ipcMain,
  app,
  clipboard,
  screen,
  globalShortcut,
  dialog,
  Tray,
  nativeImage
} = require('electron')
const path = require('path')
const fs = require('fs');
const Store = require('electron-store');

const store = new Store();
//store.clear()

let width = 400;
let height = 300;
let isLocked = false;
let tray = null;
let helpWindow = null;

function createWindow() {
  const win = new BrowserWindow({
    backgroundColor: "#202020",
    width: width,
    height: height,
    frame: false,
    transparent: true,
    webPreferences: {
      preload: path.join(__dirname, 'preload.js'),
      nodeIntegration: true,
    }
  })
  win.setAlwaysOnTop(true);

  win.loadFile('index.html')
  return win;
}

function createHelpWindow(parentWindow) {
  // 如果帮助窗口已存在，则聚焦它
  if (helpWindow && !helpWindow.isDestroyed()) {
    helpWindow.focus()
    return
  }

  helpWindow = new BrowserWindow({
    width: 700,
    height: 600,
    backgroundColor: "#2a2a2a",
    title: "快捷键帮助 - RefVroid",
    autoHideMenuBar: true,
    parent: parentWindow,
    modal: true,
    alwaysOnTop: true,
    webPreferences: {
      nodeIntegration: false,
      contextIsolation: true
    }
  })

  helpWindow.loadFile('help.html')

  // 窗口关闭时清理引用
  helpWindow.on('closed', () => {
    helpWindow = null
  })
}
app.commandLine.appendSwitch('disable-site-isolation-trials');
const contextMenu = new Menu()
const recentSubmenu = new Menu()
const windowSubmenu = new Menu()
const opacitySubmenu = new Menu()

app.whenReady().then(() => {
  const mainWin = createWindow()
  
  // 创建系统托盘图标
  let trayIcon
  const iconPath = path.join(__dirname, 'images', 'tray-icon.png')
  
  if (fs.existsSync(iconPath)) {
    trayIcon = nativeImage.createFromPath(iconPath)
  } else {
    // 使用 base64 图标
    const iconData = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABHNCSVQICAgIfAhkiAAAAAlwSFlzAAAAdgAAAHYBTnsmCAAAABl0RVh0U29mdHdhcmUAd3d3Lmlua3NjYXBlLm9yZ5vuPBoAAAA5SURBVDiN7dMxDQAgEMCwA/+fGQZgABZgARZgARZgARZgARZgARZgARZgARZgARZgARZgARbwsgMvpQYH8VLsJwAAAABJRU5ErkJggg=='
    trayIcon = nativeImage.createFromDataURL(iconData)
  }
  
  if (trayIcon.isEmpty()) {
    trayIcon = nativeImage.createFromBuffer(
      Buffer.from('iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABHNCSVQICAgIfAhkiAAAAAlwSFlzAAAAdgAAAHYBTnsmCAAAABl0RVh0U29mdHdhcmUAd3d3Lmlua3NjYXBlLm9yZ5vuPBoAAAA5SURBVDiN7dMxDQAgEMCwA/+fGQZgABZgARZgARZgARZgARZgARZgARZgARZgARZgARZgARbwsgMvpQYH8VLsJwAAAABJRU5ErkJggg==', 'base64')
    )
  }
  
  tray = new Tray(trayIcon)
  
  // 创建更新托盘菜单的函数
  function updateTrayMenu() {
    const menuTemplate = [
      {
        label: 'RefVroid',
        enabled: false
      },
      {
        type: 'separator'
      }
    ]
    
    // 只在锁定时显示解锁选项
    if (isLocked) {
      menuTemplate.push({
        label: '解锁窗口',
        click: () => {
          isLocked = false
          mainWin.setIgnoreMouseEvents(false)
          mainWin.webContents.send('unlock-window')
          updateTrayMenu()
        }
      })
    }
    
    menuTemplate.push(
      {
        label: '显示窗口',
        click: () => {
          mainWin.show()
          mainWin.focus()
        }
      },
      {
        type: 'separator'
      },
      {
        label: '退出',
        click: () => {
          app.quit()
        }
      }
    )
    
    const trayMenu = Menu.buildFromTemplate(menuTemplate)
    tray.setContextMenu(trayMenu)
  }
  
  updateTrayMenu()
  tray.setToolTip('RefVroid - 动画参考工具')
  tray.on('click', () => {
    mainWin.isVisible() ? mainWin.hide() : mainWin.show()
  })
  mainWin.on('ready-to-show', () => {
    console.log('Window ready to be presented');
    mainWin.show();
  });
  mainWin.webContents.on('did-finish-load', () => {
    console.log('Page fully loaded');
    //setTimeout(loadMostRecent, 1000)
    loadMostRecent()
  });

  contextMenu.append(new MenuItem({
    label: '粘贴',
    accelerator: process.platform === 'darwin' ? 'Cmd+V' : 'Ctrl+V',
    click: (menuItem, browserWindow, event) => {
      handlePaste();
    }
  }));
  contextMenu.append(new MenuItem({ type: 'separator' }))

  contextMenu.append(new MenuItem({
    label: '总是置顶', type: 'checkbox', checked: true,
    click: (menuItem, browserWindow, event) => {
      mainWin.setAlwaysOnTop(menuItem.checked);
    }
  }));
  
  // 只注册开发者工具的全局快捷键
  globalShortcut.register('Control+Shift+I', () => {
    mainWin.webContents.openDevTools()
  });

  function handlePaste() {
    console.log('handlePaste')

    let payload = {}
    ///strimg = JSON.stringify(img)
    var formats = clipboard.availableFormats();
    var rawFilePath = clipboard.read('FileNameW');

    if (rawFilePath) {
      var filePath = rawFilePath.replace(new RegExp(String.fromCharCode(0), 'g'), '');
      payload.type = 'filePath'
      payload.filePath = filePath
      console.log(filePath)

    } else if (formats.indexOf('image/png') > -1) {
      img = clipboard.readImage();
      payload.type = 'dataURL'
      payload.dataURL = img.toDataURL().replace('png', 'gif')
    } else if (formats.indexOf('text/plain') > -1) {
      //potential link
      var potentialUrl = clipboard.readText()
      console.log("potentialUrl", potentialUrl)
      if (validateUrl(potentialUrl)) {
        payload.type = 'filePath'
        payload.filePath = potentialUrl
      } else {
        // paste as text element
        payload.type = 'text'
        payload.text = clipboard.readText()
      }
    }

    console.log(formats)
    //console.log(payload)
    mainWin.webContents.send('clipboard', JSON.stringify(payload)) // send to web page
  }
  function addToRecent(filePath) {
    var recent = JSON.parse(store.get('recent') || "[]")
    console.log("addToRecent", store.get('recent'), filePath)
    let index = recent.indexOf(filePath)
    let exists = index != -1
    if (exists) {
      recent.splice(index, 1)
    }
    recent.push(filePath)
    store.set('recent', JSON.stringify(recent));
    console.log("addedToRecent", store.get('recent'), filePath)
    if (!exists) {
      recentSubmenu.append(new MenuItem({
        label: filePath,
        click: (menuItem, browserWindow, event) => {
          readAndLoadFilePath(menuItem.label)
        }
      }))
    }
  }
  function populateRecent() {
    var recent = JSON.parse(store.get('recent') || "[]")
    console.log("populateRecent", store.get('recent'))
    for (recentfile of recent) {
      recentSubmenu.append(new MenuItem({
        label: recentfile,
        click: (menuItem, browserWindow, event) => {
          readAndLoadFilePath(menuItem.label)
        }
      }))
    }
  }
  function loadMostRecent() {
    var recent = JSON.parse(store.get('recent') || "[]")
    if (recent.length > 0)
      readAndLoadFilePath(recent[recent.length - 1])
  }

  contextMenu.append(new MenuItem({ type: 'separator' }))

  function readAndLoadFilePath(filePath) {
    fs.readFile(filePath, (err, data) => {
      if (err) throw err;
      let newState = JSON.parse(data);
      mainWin.webContents.send('load-scene', newState, filePath)
    });
  }

  contextMenu.append(new MenuItem({
    label: "最近使用", type: 'submenu',
    submenu: recentSubmenu
  }));
  populateRecent()
  
  // 添加窗口菜单
  contextMenu.append(new MenuItem({
    label: "窗口", type: 'submenu',
    submenu: windowSubmenu
  }));
  
  // 添加透明度菜单
  for (let opacity = 100; opacity >= 10; opacity -= 10) {
    opacitySubmenu.append(new MenuItem({
      label: `${opacity}%`,
      click: (menuItem, browserWindow, event) => {
        mainWin.setOpacity(opacity / 100)
      }
    }))
  }
  
  contextMenu.append(new MenuItem({
    label: "透明度", type: 'submenu',
    submenu: opacitySubmenu
  }));
  
  // 添加锁定窗口菜单
  contextMenu.append(new MenuItem({
    id: "lock-window",
    label: '锁定窗口',
    click: (menuItem, browserWindow, event) => {
      isLocked = true
      mainWin.setIgnoreMouseEvents(true, { forward: true })
      mainWin.webContents.send('lock-window')
      updateTrayMenu()
    }
  }));
  contextMenu.append(new MenuItem({
    label: '加载',
    accelerator: process.platform === 'darwin' ? 'Cmd+L' : 'Ctrl+L',
    click: (menuItem, browserWindow, event) => {
      dialog.showOpenDialog({
        properties: ['openFile'],
        filters: [
          { name: 'RefVroid 场景', extensions: ['purgif'] }
        ]
      }).then(result => {
        if (!result.canceled) {
          readAndLoadFilePath(result.filePaths[0])
        }
      }).catch(err => {
        console.log(err)
      })
    }
  }));
  contextMenu.append(new MenuItem({
    label: '保存',
    accelerator: process.platform === 'darwin' ? 'Cmd+S' : 'Ctrl+S',
    click: (menuItem, browserWindow, event) => {
      dialog.showSaveDialog({
        defaultPath: 'scene.purgif',
        filters: [
          { name: 'RefVroid 场景', extensions: ['purgif'] }
        ]
      }).then(result => {
        if (!result.canceled) {
          mainWin.webContents.send('save-scene', result.filePath)
          addToRecent(result.filePath)
        }
      }).catch(err => {
        console.log(err)
      })
    }
  }));
  contextMenu.append(new MenuItem({
    label: '新建场景',
    accelerator: process.platform === 'darwin' ? 'Cmd+N' : 'Ctrl+N',
    click: (menuItem, browserWindow, event) => {
      mainWin.webContents.send('new-scene');
    }
  }));
  contextMenu.append(new MenuItem({
    label: '关闭',
    accelerator: process.platform === 'darwin' ? 'Cmd+W' : 'Ctrl+W',
    click: (menuItem, browserWindow, event) => {
      browserWindow.close();
    }
  }));

  Menu.setApplicationMenu(contextMenu)

  if (process.argv.indexOf("debug") > -1)
    mainWin.webContents.openDevTools()
  
  app.on('activate', () => {
    if (BrowserWindow.getAllWindows().length === 0) {
      createWindow()

    }
  })

  app.on('browser-window-created', (event, win) => {
    win.webContents.on('context-menu', (e, params) => {
      //menu.popup(win, params.x, params.y)
    })
  })
  ipcMain.on('ready', (event, menuType) => {
    //loadMostRecent()
    windowIsReady = true;
  });
  ipcMain.on('show-context-menu', (event, menuType) => {
    const win = BrowserWindow.fromWebContents(event.sender)
    
    // 根据窗口状态动态更新窗口菜单
    const isMaximized = win.isMaximized()
    windowSubmenu.clear()
    windowSubmenu.append(new MenuItem({
      label: isMaximized ? "恢复默认" : "最大化",
      accelerator: process.platform === 'darwin' ? 'Cmd+F' : 'Ctrl+F',
      click: (menuItem, browserWindow, event) => {
        if(!browserWindow.isMaximized()) {
          browserWindow.maximize();
        } else {
          browserWindow.unmaximize();
        }
      }
    }))
    windowSubmenu.append(new MenuItem({
      label: "最小化",
      accelerator: process.platform === 'darwin' ? 'Cmd+M' : 'Ctrl+M',
      click: (menuItem, browserWindow, event) => {
        browserWindow.minimize();
      }
    }))
    
    contextMenu.popup(win)
  })
  ipcMain.on('save-scene', (event, filePath, stateCopy) => {
    console.log('save', filePath, stateCopy)
    let data = JSON.stringify(stateCopy);
    fs.writeFileSync(filePath, data);
    //const win = BrowserWindow.fromWebContents(event.sender)
    //menu.popup(win)
  })
  let dragState = {
    dragging: false
  }
  ipcMain.on('handle-paste', (event, w, h) => {
    handlePaste()
  })
  ipcMain.on('trigger-load', (event) => {
    dialog.showOpenDialog({
      properties: ['openFile'],
      filters: [
        { name: 'RefVroid 场景', extensions: ['purgif'] }
      ]
    }).then(result => {
      if (!result.canceled) {
        readAndLoadFilePath(result.filePaths[0])
      }
    }).catch(err => {
      console.log(err)
    })
  })
  ipcMain.on('trigger-save', (event) => {
    dialog.showSaveDialog({
      defaultPath: 'scene.purgif',
      filters: [
        { name: 'RefVroid 场景', extensions: ['purgif'] }
      ]
    }).then(result => {
      if (!result.canceled) {
        mainWin.webContents.send('save-scene', result.filePath)
        addToRecent(result.filePath)
      }
    }).catch(err => {
      console.log(err)
    })
  })
  ipcMain.on('trigger-close', (event) => {
    mainWin.close()
  })
  ipcMain.on('trigger-maximize', (event) => {
    if(!mainWin.isMaximized()) {
      mainWin.maximize()
    } else {
      mainWin.unmaximize()
    }
  })
  ipcMain.on('trigger-minimize', (event) => {
    mainWin.minimize()
  })
  ipcMain.on('show-help', (event) => {
    createHelpWindow(mainWin)
  })
  ipcMain.on('copy-text', (event, text) => {
    clipboard.writeText(text)
    console.log('Copied text to clipboard:', text)
  })
  ipcMain.on('copy-multiple-images', (event, imageDataURLs) => {
    try {
      console.log('Received', imageDataURLs.length, 'images to copy')
      
      if (imageDataURLs.length === 1) {
        // 只有一张图片，直接复制
        const img = nativeImage.createFromDataURL(imageDataURLs[0])
        if (!img.isEmpty()) {
          clipboard.clear()
          clipboard.writeImage(img)
          console.log('Copied single image')
        }
        return
      }
      
      // 创建临时文件夹
      const tempDir = path.join(app.getPath('temp'), 'RefVroid-copy')
      if (!fs.existsSync(tempDir)) {
        fs.mkdirSync(tempDir, { recursive: true })
      }
      
      // 清理旧文件
      try {
        const oldFiles = fs.readdirSync(tempDir)
        oldFiles.forEach(file => {
          try {
            fs.unlinkSync(path.join(tempDir, file))
          } catch (err) {
            // 忽略删除错误
          }
        })
      } catch (err) {
        // 忽略读取目录错误
      }
      
      // 保存所有图片为临时文件
      const filePaths = []
      imageDataURLs.forEach((dataURL, index) => {
        try {
          const img = nativeImage.createFromDataURL(dataURL)
          if (!img.isEmpty()) {
            const filePath = path.join(tempDir, `image_${Date.now()}_${index + 1}.png`)
            fs.writeFileSync(filePath, img.toPNG())
            filePaths.push(filePath)
            console.log('Saved temp image:', filePath)
          }
        } catch (err) {
          console.error('Error saving image', index, ':', err)
        }
      })
      
      if (filePaths.length === 0) {
        console.log('No valid images to copy')
        return
      }
      
      console.log('Copying', filePaths.length, 'files:', filePaths)
      
      // 清空剪贴板
      clipboard.clear()
      
      // 方法1: 使用 HTML 格式（QQ 支持）
      const htmlImages = filePaths.map(fp => 
        `<img src="file:///${fp.replace(/\\/g, '/')}" />`
      ).join('')
      const html = `<html><body>${htmlImages}</body></html>`
      
      // 方法2: 使用文件路径格式
      const fileList = filePaths.join('\n')
      
      // 同时写入多种格式
      clipboard.write({
        text: fileList,
        html: html
      })
      
      console.log('Copied', filePaths.length, 'images in multiple formats')
      
    } catch (err) {
      console.error('Error copying multiple images:', err)
    }
  })
  ipcMain.on('copy-image', (event, imagePath) => {
    try {
      let img = null
      
      // 如果是 dataURL，直接写入
      if (imagePath.startsWith('data:')) {
        img = nativeImage.createFromDataURL(imagePath)
        console.log('Processing dataURL image, size:', img.getSize())
        
        // 确保图片不为空
        if (img.isEmpty()) {
          console.error('Created image from dataURL is empty')
          clipboard.writeText('图片复制失败')
          return
        }
      } else if (imagePath.startsWith('http://') || imagePath.startsWith('https://')) {
        // 网络图片暂时只能复制 URL
        clipboard.writeText(imagePath)
        console.log('Copied image URL to clipboard:', imagePath)
        return
      } else {
        // 本地文件路径
        // 处理可能的 file:// 协议
        let filePath = imagePath
        if (filePath.startsWith('file://')) {
          filePath = filePath.substring(7)
        }
        // Windows 路径处理
        if (process.platform === 'win32' && filePath.startsWith('/')) {
          filePath = filePath.substring(1)
        }
        
        console.log('Reading image from path:', filePath)
        
        // 检查文件是否存在
        if (!fs.existsSync(filePath)) {
          console.error('File does not exist:', filePath)
          clipboard.writeText('文件不存在: ' + filePath)
          return
        }
        
        img = nativeImage.createFromPath(filePath)
        console.log('Image loaded, size:', img.getSize())
      }
      
      if (img && !img.isEmpty()) {
        // 清空剪贴板
        clipboard.clear()
        
        // 写入图片到剪贴板
        clipboard.writeImage(img)
        
        console.log('Successfully copied image to clipboard')
        console.log('Image size:', img.getSize())
        console.log('Image aspect ratio:', img.getAspectRatio())
      } else {
        console.log('Image is empty, copying error message')
        clipboard.writeText('图片为空，无法复制')
      }
    } catch (err) {
      console.error('Error copying image:', err)
      clipboard.writeText('复制图片时出错: ' + err.message)
    }
  })
  ipcMain.on('loaded-state', (event, filePath) => {
    addToRecent(filePath)
  })
  ipcMain.on('record-window-size', (event, w, h) => {
    width = mainWin.getSize()[0]
    height = mainWin.getSize()[1]
  })
  ipcMain.on('move-electron-window', (event, x, y, initPos) => {
    //var display =  screen.getDisplayNearestPoint({x: x, y: y})
    //var dpiRespected = screen.dipToScreenPoint({x: x, y: y})
    //mainWin.setPosition(x,y)
    mainWin.setBounds({
      width: width,
      height: height,
      x: x - initPos.x,
      y: y - initPos.y
    });
    //win.setSize(width, height)
    //mainWin.setPosition(Math.round(x / 1.25) - Math.round(initPos.x / 1.25), Math.round(y / 1.25) - Math.round(initPos.y / 1.25))
  })
  let loopToLoad = function loopToLoad(){
    if(windowIsReady){
      console.log("loadMostRecent")
      //setTimeout(loadMostRecent, 700)
      //loadMostRecent()
    }
    else{
      console.log("not ready")
      setTimeout(loopToLoad, 100)
    }
  };
  loopToLoad();
})

let windowIsReady = false;
app.on('window-all-closed', () => {
  if (process.platform !== 'darwin') {
    app.quit()
  }
})

app.on('will-quit', () => {
  globalShortcut.unregisterAll()
})

function validateUrl(value) {
  return /^(?:(?:(?:https?|ftp):)?\/\/)(?:\S+(?::\S*)?@)?(?:(?!(?:10|127)(?:\.\d{1,3}){3})(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9]+)(?:\.(?:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9]+)*(?:\.(?:[a-z\u00a1-\uffff]{2,})))(?::\d{2,5})?(?:[/?#]\S*)?$/i.test(value);
}