'use strict';

if (require('electron-squirrel-startup')) {
  process.exit(0);
}

// Don't npm install this (it breaks). Rely on the global one.
const electron = require('electron');
const appVersion = require('./app.json').version;
const storage = require('electron-json-storage');
const {app, dialog, ipcMain, autoUpdater, Menu, BrowserWindow, webContents} = electron;

const IS_DEV = process.env.NODE_ENV === 'development';
const IS_MAC = process.platform === 'darwin';
const IS_WIN = process.platform === 'win32';
const IS_LIN = process.platform === 'linux';

const UPDATE_URLS = {
  darwin: `http://updates.insomnia.rest/builds/check/mac?v=${appVersion}`,
  win32: 'https://s3.amazonaws.com/builds-insomnia-rest/win',
  linux: null
};

let mainWindow = null;
let zoomFactor = 1;

// Enable this for CSS grid layout :)
app.commandLine.appendSwitch('enable-experimental-web-platform-features');

if (!IS_DEV) {
  try {
    autoUpdater.setFeedURL(UPDATE_URLS[process.platform]);
    autoUpdater.checkForUpdates();
  } catch (e) {
    // Probably don't have internet
  }
}

autoUpdater.on('update-not-available', () => {
  console.log('-- Update Not Available --')
});

autoUpdater.on('update-available', () => {
  console.log('-- Update Available --');
});

autoUpdater.on('update-downloaded', (e, releaseNotes, releaseName, releaseDate, updateUrl) => {
  console.log(`-- Update Downloaded ${releaseName} --`);
  showUpdateModal();
});

function showUpdateModal () {
  dialog.showMessageBox({
    type: 'info',
    buttons: [
      'Install and Restart',
      'Later',
    ],
    defaultId: 0,
    cancelId: 1,
    title: 'New Update Available!',
    message: 'Exciting news!\n\nA fresh new update has been downloaded and is ready to install\n\n\n~Gregory'
  }, id => {
    if (id === 0) {
      console.log('-- Installing Update --');
      autoUpdater.quitAndInstall();
    } else {
      console.log('-- Cancel Update --');
    }
  });
}

ipcMain.on('check-for-updates', () => {
  console.log('-- Checking for Updates --');
  if (!IS_DEV) {
    autoUpdater.checkForUpdates();
  }
});

// Quit when all windows are closed (except on Mac).
app.on('window-all-closed', () => {
  if (!IS_MAC) {
    app.quit();
  }
});

app.on('ready', () => {
  storage.get('bounds', (err, data) => {
    if (err) {
      console.log('Failed to fetch window bounds', err);
    }

    let bounds = {};
    try {
      bounds = JSON.parse(data || '{}');
    } catch (e) {
      // This should never happen, but if it does...!
      console.error('Failed to parse window bounds', err, data);
    }

    const {x, y, width, height} = bounds;

    mainWindow = new BrowserWindow({
      x: x,
      y: y,
      width: width || 800,
      height: height || 500,
      minHeight: 500,
      minWidth: 500,
      acceptFirstMouse: true,
      webPreferences: {
        zoomFactor: zoomFactor
      }
    });

    const saveBounds = () => {
      storage.set('bounds', JSON.stringify(mainWindow.getBounds()), err => {
        if (err) {
          console.log('Failed to save window bounds', err);
        }
      });
    };

    mainWindow.on('resize', e => saveBounds());
    mainWindow.on('move', e => saveBounds());

    // and load the app.html of the app.
    mainWindow.loadURL(`file://${__dirname}/app.html`);

    // Uncomment this to test things
    // mainWindow.toggleDevTools();

    // Emitted when the window is closed.
    mainWindow.on('closed', () => {
      // Dereference the window object, usually you would store windows
      // in an array if your app supports multi windows, this is the time
      // when you should delete the corresponding element.
      mainWindow = null;
    });

    var template = [
      {
        label: "Application",
        role: "window",
        submenu: [
          {label: "About Application", selector: "orderFrontStandardAboutPanel:"},
          {type: "separator"},
          {
            label: "Quit",
            accelerator: "Command+Q",
            click: function () {
              app.quit();
            }
          }
        ]
      },
      {
        label: "Edit",
        submenu: [
          {label: "Undo", accelerator: "CmdOrCtrl+Z", selector: "undo:"},
          {label: "Redo", accelerator: "Shift+CmdOrCtrl+Z", selector: "redo:"},
          {type: "separator"},
          {label: "Cut", accelerator: "CmdOrCtrl+X", selector: "cut:"},
          {label: "Copy", accelerator: "CmdOrCtrl+C", selector: "copy:"},
          {label: "Paste", accelerator: "CmdOrCtrl+V", selector: "paste:"},
          {label: "Select All", accelerator: "CmdOrCtrl+A", selector: "selectAll:"}
        ]
      },
      {
        label: "View",
        role: "window",
        submenu: [
          {
            label: "Actual Size",
            accelerator: "CmdOrCtrl+0",
            click: () => {
              const window = electron.BrowserWindow.getFocusedWindow();
              zoomFactor = 1;
              window.webContents.setZoomFactor(zoomFactor);
            }
          },
          {
            label: "Zoom In",
            accelerator: IS_MAC ? "CmdOrCtrl+Plus" : "CmdOrCtrl+=",
            click: () => {
              const window = electron.BrowserWindow.getFocusedWindow();
              zoomFactor = Math.min(1.8, zoomFactor + 0.1);
              window.webContents.setZoomFactor(zoomFactor);
            }
          },
          {
            label: "Zoom Out",
            accelerator: "CmdOrCtrl+-",
            click: () => {
              const window = electron.BrowserWindow.getFocusedWindow();
              zoomFactor = Math.max(0.5, zoomFactor - 0.1);
              window.webContents.setZoomFactor(zoomFactor);
            }
          }
        ]
      },
      {
        label: "Help",
        role: "help",
        id: "help",
        submenu: [
          {
            label: "Report an Issue...",
            click: () => {
              electron.shell.openExternal('mailto:support@insomnia.rest');
            }
          },
          {
            label: "Insomnia Help",
            accelerator: "CmdOrCtrl+?",
            click: () => {
              electron.shell.openExternal('http://insomnia.rest');
            }
          }
        ]
      }
    ];

    if (IS_DEV) {
      template.push({
        label: 'Developer',
        position: 'before=help',
        submenu: [{
          label: 'Reload',
          accelerator: 'Command+R',
          click: function () {
            mainWindow.reload();
          }
        }, {
          label: 'Toggle DevTools',
          accelerator: 'Alt+Command+I',
          click: function () {
            mainWindow.toggleDevTools();
          }
        }]
      });
    }

    Menu.setApplicationMenu(Menu.buildFromTemplate(template));
  });
});