require("app-module-path").addPath(__dirname);

const { BaseApplication } = require("lib/BaseApplication");
const { FoldersScreenUtils } = require("lib/folders-screen-utils.js");
const Setting = require("lib/models/Setting.js");
const { shim } = require("lib/shim.js");
const BaseModel = require("lib/BaseModel.js");
const MasterKey = require("lib/models/MasterKey");
const { _, setLocale } = require("lib/locale.js");
const os = require("os");
const fs = require("fs-extra");
const Tag = require("lib/models/Tag.js");
const { reg } = require("lib/registry.js");
const { sprintf } = require("sprintf-js");
const { JoplinDatabase } = require("lib/joplin-database.js");
const { DatabaseDriverNode } = require("lib/database-driver-node.js");
const { ElectronAppWrapper } = require("./ElectronAppWrapper");
const { defaultState } = require("lib/reducer.js");
const packageInfo = require("./packageInfo.js");
const AlarmService = require("lib/services/AlarmService.js");
const AlarmServiceDriverNode = require("lib/services/AlarmServiceDriverNode");
const DecryptionWorker = require("lib/services/DecryptionWorker");
const InteropService = require("lib/services/InteropService");
const InteropServiceHelper = require("./InteropServiceHelper.js");

const { bridge } = require("electron").remote.require("./bridge");
const Menu = bridge().Menu;
const MenuItem = bridge().MenuItem;

const appDefaultState = Object.assign({}, defaultState, {
	route: {
		type: "NAV_GO",
		routeName: "Main",
		props: {},
	},
	navHistory: [],
	fileToImport: null,
	windowCommand: null,
	noteVisiblePanes: ["editor", "viewer"],
	windowContentSize: bridge().windowContentSize(),
});

class Application extends BaseApplication {
	constructor() {
		super();
		this.lastMenuScreen_ = null;
	}

	hasGui() {
		return true;
	}

	checkForUpdateLoggerPath() {
		return Setting.value("profileDir") + "/log-autoupdater.txt";
	}

	reducer(state = appDefaultState, action) {
		let newState = state;

		try {
			switch (action.type) {
				case "NAV_BACK":
				case "NAV_GO":
					const goingBack = action.type === "NAV_BACK";

					if (goingBack && !state.navHistory.length) break;

					const currentRoute = state.route;

					newState = Object.assign({}, state);
					let newNavHistory = state.navHistory.slice();

					if (goingBack) {
						let newAction = null;
						while (newNavHistory.length) {
							newAction = newNavHistory.pop();
							if (newAction.routeName !== state.route.routeName) break;
						}

						if (!newAction) break;

						action = newAction;
					}

					if (!goingBack) newNavHistory.push(currentRoute);
					newState.navHistory = newNavHistory;
					newState.route = action;
					break;

				case "WINDOW_CONTENT_SIZE_SET":
					newState = Object.assign({}, state);
					newState.windowContentSize = action.size;
					break;

				case "WINDOW_COMMAND":
					newState = Object.assign({}, state);
					let command = Object.assign({}, action);
					delete command.type;
					newState.windowCommand = command;
					break;

				case "NOTE_VISIBLE_PANES_TOGGLE":
					let panes = state.noteVisiblePanes.slice();
					if (panes.length === 2) {
						panes = ["editor"];
					} else if (panes.indexOf("editor") >= 0) {
						panes = ["viewer"];
					} else if (panes.indexOf("viewer") >= 0) {
						panes = ["editor", "viewer"];
					} else {
						panes = ["editor", "viewer"];
					}

					newState = Object.assign({}, state);
					newState.noteVisiblePanes = panes;
					break;

				case "NOTE_VISIBLE_PANES_SET":
					newState = Object.assign({}, state);
					newState.noteVisiblePanes = action.panes;
					break;
			}
		} catch (error) {
			error.message = "In reducer: " + error.message + " Action: " + JSON.stringify(action);
			throw error;
		}

		return super.reducer(newState, action);
	}

	async generalMiddleware(store, next, action) {
		if ((action.type == "SETTING_UPDATE_ONE" && action.key == "locale") || action.type == "SETTING_UPDATE_ALL") {
			setLocale(Setting.value("locale"));
			this.refreshMenu();
		}

		if ((action.type == "SETTING_UPDATE_ONE" && action.key == "showTrayIcon") || action.type == "SETTING_UPDATE_ALL") {
			this.updateTray();
		}

		if ((action.type == "SETTING_UPDATE_ONE" && action.key == "style.editor.fontFamily") || action.type == "SETTING_UPDATE_ALL") {
			this.updateEditorFont();
		}

		if (["NOTE_UPDATE_ONE", "NOTE_DELETE", "FOLDER_UPDATE_ONE", "FOLDER_DELETE"].indexOf(action.type) >= 0) {
			if (!await reg.syncTarget().syncStarted()) reg.scheduleSync();
		}

		if (["EVENT_NOTE_ALARM_FIELD_CHANGE", "NOTE_DELETE"].indexOf(action.type) >= 0) {
			await AlarmService.updateNoteNotification(action.id, action.type === "NOTE_DELETE");
		}

		const result = await super.generalMiddleware(store, next, action);
		const newState = store.getState();

		if (action.type === "NAV_GO" || action.type === "NAV_BACK") {
			app().updateMenu(newState.route.routeName);
		}

		if (["NOTE_VISIBLE_PANES_TOGGLE", "NOTE_VISIBLE_PANES_SET"].indexOf(action.type) >= 0) {
			Setting.setValue("noteVisiblePanes", newState.noteVisiblePanes);
		}

		return result;
	}

	refreshMenu() {
		const screen = this.lastMenuScreen_;
		this.lastMenuScreen_ = null;
		this.updateMenu(screen);
	}

	updateMenu(screen) {
		if (this.lastMenuScreen_ === screen) return;

		const sortNoteItems = [];
		const sortNoteOptions = Setting.enumOptions("notes.sortOrder.field");
		for (let field in sortNoteOptions) {
			if (!sortNoteOptions.hasOwnProperty(field)) continue;
			sortNoteItems.push({
				label: sortNoteOptions[field],
				screens: ["Main"],
				type: "checkbox",
				checked: Setting.value("notes.sortOrder.field") === field,
				click: () => {
					Setting.setValue("notes.sortOrder.field", field);
					this.refreshMenu();
				},
			});
		}

		const importItems = [];
		const exportItems = [];
		const ioService = new InteropService();
		const ioModules = ioService.modules();
		for (let i = 0; i < ioModules.length; i++) {
			const module = ioModules[i];
			if (module.type === "exporter") {
				exportItems.push({
					label: module.format + " - " + module.description,
					screens: ["Main"],
					click: async () => {
						await InteropServiceHelper.export(this.dispatch.bind(this), module);
					},
				});
			} else {
				for (let j = 0; j < module.sources.length; j++) {
					const moduleSource = module.sources[j];
					let label = [module.format + " - " + module.description];
					if (module.sources.length > 1) {
						label.push("(" + (moduleSource === "file" ? _("File") : _("Directory")) + ")");
					}
					importItems.push({
						label: label.join(" "),
						screens: ["Main"],
						click: async () => {
							let path = null;

							const selectedFolderId = this.store().getState().selectedFolderId;

							if (moduleSource === "file") {
								path = bridge().showOpenDialog({
									filters: [{ name: module.description, extensions: [module.fileExtension] }],
								});
							} else {
								path = bridge().showOpenDialog({
									properties: ["openDirectory", "createDirectory"],
								});
							}

							if (!path || (Array.isArray(path) && !path.length)) return;

							if (Array.isArray(path)) path = path[0];

							this.dispatch({
								type: "WINDOW_COMMAND",
								name: "showModalMessage",
								message: _('Importing from "%s" as "%s" format. Please wait...', path, module.format),
							});

							const importOptions = {};
							importOptions.path = path;
							importOptions.format = module.format;
							importOptions.destinationFolderId = !module.isNoteArchive && moduleSource === "file" ? selectedFolderId : null;

							const service = new InteropService();
							try {
								const result = await service.import(importOptions);
								console.info("Import result: ", result);
							} catch (error) {
								bridge().showErrorMessageBox(error.message);
							}

							this.dispatch({
								type: "WINDOW_COMMAND",
								name: "hideModalMessage",
							});
						},
					});
				}
			}
		}

		const template = [
			{
				label: _("File"),
				submenu: [
					{
						label: _("New note"),
						accelerator: "CommandOrControl+N",
						screens: ["Main"],
						click: () => {
							this.dispatch({
								type: "WINDOW_COMMAND",
								name: "newNote",
							});
						},
					},
					{
						label: _("New to-do"),
						accelerator: "CommandOrControl+T",
						screens: ["Main"],
						click: () => {
							this.dispatch({
								type: "WINDOW_COMMAND",
								name: "newTodo",
							});
						},
					},
					{
						label: _("New notebook"),
						accelerator: "CommandOrControl+B",
						screens: ["Main"],
						click: () => {
							this.dispatch({
								type: "WINDOW_COMMAND",
								name: "newNotebook",
							});
						},
					},
					{
						type: "separator",
						// }, {
						// 	label: _('Import Evernote notes'),
						// 	click: () => {
						// 		const filePaths = bridge().showOpenDialog({
						// 			properties: ['openFile', 'createDirectory'],
						// 			filters: [
						// 				{ name: _('Evernote Export Files'), extensions: ['enex'] },
						// 			]
						// 		});
						// 		if (!filePaths || !filePaths.length) return;

						// 		this.dispatch({
						// 			type: 'NAV_GO',
						// 			routeName: 'Import',
						// 			props: {
						// 				filePath: filePaths[0],
						// 			},
						// 		});
						// 	}
					},
					{
						label: _("Import"),
						submenu: importItems,
					},
					{
						label: _("Export"),
						submenu: exportItems,
					},
					{
						type: "separator",
						platforms: ["darwin"],
					},
					{
						label: _("Hide %s", "Joplin"),
						platforms: ["darwin"],
						accelerator: "CommandOrControl+H",
						click: () => {
							bridge()
								.electronApp()
								.hide();
						},
					},
					{
						type: "separator",
					},
					{
						label: _("Quit"),
						accelerator: "CommandOrControl+Q",
						click: () => {
							bridge()
								.electronApp()
								.quit();
						},
					},
				],
			},
			{
				label: _("Edit"),
				submenu: [
					{
						label: _("Copy"),
						screens: ["Main", "OneDriveLogin", "Config", "EncryptionConfig"],
						role: "copy",
						accelerator: "CommandOrControl+C",
					},
					{
						label: _("Cut"),
						screens: ["Main", "OneDriveLogin", "Config", "EncryptionConfig"],
						role: "cut",
						accelerator: "CommandOrControl+X",
					},
					{
						label: _("Paste"),
						screens: ["Main", "OneDriveLogin", "Config", "EncryptionConfig"],
						role: "paste",
						accelerator: "CommandOrControl+V",
					},
					{
						type: "separator",
						screens: ["Main"],
					},
					{
						label: _("Search in all the notes"),
						screens: ["Main"],
						accelerator: "F6",
						click: () => {
							this.dispatch({
								type: "WINDOW_COMMAND",
								name: "search",
							});
						},
					},
				],
			},
			{
				label: _("View"),
				submenu: [
					{
						label: _("Toggle editor layout"),
						screens: ["Main"],
						accelerator: "CommandOrControl+L",
						click: () => {
							this.dispatch({
								type: "WINDOW_COMMAND",
								name: "toggleVisiblePanes",
							});
						},
					},
					{
						type: "separator",
						screens: ["Main"],
					},
					{
						label: Setting.settingMetadata("notes.sortOrder.field").label(),
						screens: ["Main"],
						submenu: sortNoteItems,
					},
					{
						label: Setting.settingMetadata("notes.sortOrder.reverse").label(),
						type: "checkbox",
						checked: Setting.value("notes.sortOrder.reverse"),
						screens: ["Main"],
						click: () => {
							Setting.setValue("notes.sortOrder.reverse", !Setting.value("notes.sortOrder.reverse"));
						},
					},
					{
						label: Setting.settingMetadata("uncompletedTodosOnTop").label(),
						type: "checkbox",
						checked: Setting.value("uncompletedTodosOnTop"),
						screens: ["Main"],
						click: () => {
							Setting.setValue("uncompletedTodosOnTop", !Setting.value("uncompletedTodosOnTop"));
						},
					},
				],
			},
			{
				label: _("Tools"),
				submenu: [
					{
						label: _("Synchronisation status"),
						click: () => {
							this.dispatch({
								type: "NAV_GO",
								routeName: "Status",
							});
						},
					},
					{
						type: "separator",
						screens: ["Main"],
					},
					{
						label: _("Encryption options"),
						click: () => {
							this.dispatch({
								type: "NAV_GO",
								routeName: "EncryptionConfig",
							});
						},
					},
					{
						label: _("General Options"),
						accelerator: "CommandOrControl+,",
						click: () => {
							this.dispatch({
								type: "NAV_GO",
								routeName: "Config",
							});
						},
					},
				],
			},
			{
				label: _("Help"),
				submenu: [
					{
						label: _("Website and documentation"),
						accelerator: "F1",
						click() {
							bridge().openExternal("http://joplin.cozic.net");
						},
					},
					{
						label: _("Make a donation"),
						click() {
							bridge().openExternal("http://joplin.cozic.net/donate");
						},
					},
					{
						label: _("Check for updates..."),
						click: () => {
							bridge().checkForUpdates(false, bridge().window(), this.checkForUpdateLoggerPath());
						},
					},
					{
						type: "separator",
						screens: ["Main"],
					},
					{
						label: _("About Joplin"),
						click: () => {
							const p = packageInfo;
							let message = [p.description, "", "Copyright © 2016-2018 Laurent Cozic", _("%s %s (%s, %s)", p.name, p.version, Setting.value("env"), process.platform)];
							bridge().showInfoMessageBox(message.join("\n"), {
								icon:
									bridge()
										.electronApp()
										.buildDir() + "/icons/32x32.png",
							});
						},
					},
				],
			},
		];

		function isEmptyMenu(template) {
			for (let i = 0; i < template.length; i++) {
				const t = template[i];
				if (t.type !== "separator") return false;
			}
			return true;
		}

		function removeUnwantedItems(template, screen) {
			const platform = shim.platformName();

			let output = [];
			for (let i = 0; i < template.length; i++) {
				const t = Object.assign({}, template[i]);
				if (t.screens && t.screens.indexOf(screen) < 0) continue;
				if (t.platforms && t.platforms.indexOf(platform) < 0) continue;
				if (t.submenu) t.submenu = removeUnwantedItems(t.submenu, screen);
				if ("submenu" in t && isEmptyMenu(t.submenu)) continue;
				output.push(t);
			}
			return output;
		}

		let screenTemplate = removeUnwantedItems(template, screen);

		const menu = Menu.buildFromTemplate(screenTemplate);
		Menu.setApplicationMenu(menu);

		this.lastMenuScreen_ = screen;
	}

	updateTray() {
		// Tray icon (called AppIndicator) doesn't work in Ubuntu
		// http://www.webupd8.org/2017/04/fix-appindicator-not-working-for.html
		// Might be fixed in Electron 18.x but no non-beta release yet.
		if (!shim.isWindows() && !shim.isMac()) return;

		const app = bridge().electronApp();

		if (app.trayShown() === Setting.value("showTrayIcon")) return;

		if (!Setting.value("showTrayIcon")) {
			app.destroyTray();
		} else {
			const contextMenu = Menu.buildFromTemplate([
				{
					label: _("Open %s", app.electronApp().getName()),
					click: () => {
						app.window().show();
					},
				},
				{ type: "separator" },
				{
					label: _("Exit"),
					click: () => {
						app.quit();
					},
				},
			]);
			app.createTray(contextMenu);
		}
	}

	updateEditorFont() {
		const fontFamilies = [];
		if (Setting.value("style.editor.fontFamily")) fontFamilies.push('"' + Setting.value("style.editor.fontFamily") + '"');
		fontFamilies.push("monospace");

		// The '*' and '!important' parts are necessary to make sure Russian text is displayed properly
		// https://github.com/laurent22/joplin/issues/155

		const css = ".ace_editor * { font-family: " + fontFamilies.join(", ") + " !important; }";
		const styleTag = document.createElement("style");
		styleTag.type = "text/css";
		styleTag.appendChild(document.createTextNode(css));
		document.head.appendChild(styleTag);
	}

	async start(argv) {
		argv = await super.start(argv);

		AlarmService.setDriver(new AlarmServiceDriverNode({ appName: packageInfo.build.appId }));
		AlarmService.setLogger(reg.logger());

		reg.setShowErrorMessageBoxHandler(message => {
			bridge().showErrorMessageBox(message);
		});

		if (Setting.value("openDevTools")) {
			bridge()
				.window()
				.webContents.openDevTools();
		}

		this.updateMenu("Main");

		this.initRedux();

		// Since the settings need to be loaded before the store is created, it will never
		// receive the SETTING_UPDATE_ALL even, which mean state.settings will not be
		// initialised. So we manually call dispatchUpdateAll() to force an update.
		Setting.dispatchUpdateAll();

		await FoldersScreenUtils.refreshFolders();

		const tags = await Tag.allWithNotes();

		this.dispatch({
			type: "TAG_UPDATE_ALL",
			items: tags,
		});

		const masterKeys = await MasterKey.all();

		this.dispatch({
			type: "MASTERKEY_UPDATE_ALL",
			items: masterKeys,
		});

		this.store().dispatch({
			type: "FOLDER_SELECT",
			id: Setting.value("activeFolderId"),
		});

		// Note: Auto-update currently doesn't work in Linux: it downloads the update
		// but then doesn't install it on exit.
		if (shim.isWindows() || shim.isMac()) {
			const runAutoUpdateCheck = () => {
				if (Setting.value("autoUpdateEnabled")) {
					bridge().checkForUpdates(true, bridge().window(), this.checkForUpdateLoggerPath());
				}
			};

			// Initial check on startup
			setTimeout(() => {
				runAutoUpdateCheck();
			}, 5000);
			// Then every x hours
			setInterval(() => {
				runAutoUpdateCheck();
			}, 12 * 60 * 60 * 1000);
		}

		this.updateTray();

		setTimeout(() => {
			AlarmService.garbageCollect();
		}, 1000 * 60 * 60);

		if (Setting.value("env") === "dev") {
			AlarmService.updateAllNotifications();
		} else {
			reg.scheduleSync().then(() => {
				// Wait for the first sync before updating the notifications, since synchronisation
				// might change the notifications.
				AlarmService.updateAllNotifications();

				DecryptionWorker.instance().scheduleStart();
			});
		}
	}
}

let application_ = null;

function app() {
	if (!application_) application_ = new Application();
	return application_;
}

module.exports = { app };