"use strict";

const ipcMain = require("electron").ipcMain;
const { BrowserWindow } = require('electron');
const path = require('path');
const fs = require('fs');
const rimraf = require('rimraf');

const imIconHelper = require("./core/imIconHelper");
const { readJson } = require('./core/utils');
const http = require("./core/http");
const { tr } = require('./core/translate');

let panelShown = false;

let newVersionChecked = false;

module.exports = {
  async load() {
    Editor.Ipc.sendToPanel("im-plugin", "im-plugin:force-close");

    this.onEditorReady = this.onEditorReady.bind(this);
    this.onUserLogin = this.onUserLogin.bind(this);
    this.onUserLogout = this.onUserLogout.bind(this);
    this.translate = this.translate.bind(this);
    this.getEntryUrl = this.getEntryUrl.bind(this);
    this.onDownloadNewVersionSucceed = this.onDownloadNewVersionSucceed.bind(
      this
    );
    this.onDownloadNewVersionFailed = this.onDownloadNewVersionFailed.bind(
      this
    );
    this.onInstallNewVersionSucceed = this.onInstallNewVersionSucceed.bind(
      this
    );
    this.onInstallNewVersionFailed = this.onInstallNewVersionFailed.bind(this);

    // 注：热更新后，不会触发editor:ready，故这里我们才分出来一个initialSetup。
    this.initialSetup();
    ipcMain.on("editor:ready", this.onEditorReady);
    Editor.User.on("login", this.onUserLogin);
    Editor.User.on("logout", this.onUserLogout);
    ipcMain.on("im-plugin:translate", this.translate);
    ipcMain.on("im-plugin:get-entry-url", this.getEntryUrl);
    ipcMain.on("store:download-zip-succeed", this.onDownloadNewVersionSucceed);
    ipcMain.on("store:download-zip-failed", this.onDownloadNewVersionFailed);
    ipcMain.on("store:install-zip-succeed", this.onInstallNewVersionSucceed);
    ipcMain.on("store:install-zip-failed", this.onInstallNewVersionFailed);
  },

  unload() {
    ipcMain.off("editor:ready", this.onEditorReady);
    Editor.User.removeListener("login", this.onUserLogin);
    Editor.User.removeListener("logout", this.onUserLogout);
    ipcMain.off("im-plugin:translate", this.translate);
    ipcMain.off("im-plugin:get-entry-url", this.getEntryUrl);
    ipcMain.off("store:download-zip-succeed", this.onDownloadNewVersionSucceed);
    ipcMain.off("store:download-zip-failed", this.onDownloadNewVersionFailed);
    ipcMain.off("store:install-zip-succeed", this.onInstallNewVersionSucceed);
    ipcMain.off("store:install-zip-failed", this.onInstallNewVersionFailed);

    imIconHelper.clearUpdateIconTimer();
  },

  async initialSetup() {
    if (!(await Editor.User.isLoggedIn())) {
      return;
    }
    await this.updateImSettings();
    imIconHelper.setupUpdateIconTimer();
  },

  async onEditorReady() {
    if (!(await Editor.User.isLoggedIn())) {
      return;
    }
    // 可能由于之前用户未登录，initialSetup没有更新imSettings
    // 这里需要检查并更新下。
    if (!imIconHelper.getImSettings()) {
      await this.updateImSettings();
    }
    this.promptForUpdateIfNewVersionExists();
    // initialSetup可能太早更新图标，直接被无视了，这里重新设置Timer。
    imIconHelper.clearUpdateIconTimer();
    imIconHelper.setupUpdateIconTimer();
  },

  async onUserLogin() {
    await this.updateImSettings();
    imIconHelper.setupUpdateIconTimer();
    this.promptForUpdateIfNewVersionExists();
  },

  onUserLogout() {
    Editor.Ipc.sendToPanel("im-plugin", "im-plugin:force-close");
    imIconHelper.clearUpdateIconTimer();
  },

  async updateImSettings() {
    // 强制init，避免重新登录导致session改变的问题。
    await http.init(true);
    const imSettings = await http.getIMSettings();
    imIconHelper.updateImSettings(imSettings);
  },

  async promptForUpdateIfNewVersionExists() {
    if (newVersionChecked) {
      return;
    }
    newVersionChecked = true;
    const imSettings = imIconHelper.getImSettings();
    const newVersion = imSettings.plugin_version;
    if (!newVersion || !newVersion.match(/^(\d|\.)+$/)) {
      // 版本只做一些粗略的检查，只检查是否只包含数字和点。
      return;
    }

    const packageJson = readJson(path.join(__dirname, "./package.json"));
    const oldVersion = packageJson.version;
    if (newVersion > oldVersion) {
      const newVersionMsg = tr("new-version-found").replace("_", newVersion);
      const result = await Editor.Dialog.messageBox({
        type: "info",
        title: tr("info-title"),
        buttons: [tr("ok"), tr("cancel")],
        defaultId: 0,
        cancelId: 1,
        message: newVersionMsg,
      });
      if (result === 0) {
        this.updateToNewVersion();
      }
    }
  },

  updateToNewVersion() {
    Editor.Ipc.sendToMain(
      "editor:package-query-info",
      "store",
      (err, storePackageInfo) => {
        if (err) {
          return;
        }
        const storeVersion = storePackageInfo.info.version;
        if (storeVersion >= "2.0.1") {
          const imSettings = imIconHelper.getImSettings();
          Editor.Ipc.sendToMain(
            "store:download-zip",
            imSettings.plugin_url,
            `im-plugin_${imSettings.plugin_version}.zip`
          );
        } else {
          try {
            // 打开不存在的Panel会有异常，这里忽略可能的异常。
            Editor.Panel.open("store");
          } catch (_) {}
        }
      }
    );
  },

  async onDownloadNewVersionSucceed(event, url, fileName, zipPath) {
    const imSettings = imIconHelper.getImSettings();
    if (url !== imSettings.plugin_url) {
      return;
    }
    this.newVersionZip = zipPath;
    try {
      this.cleanRequireCaches(__dirname);
      await this.removeDir(__dirname);
      Editor.Ipc.sendToMain("store:install-zip", this.newVersionZip);
    } catch (e) {
      Editor.warn(e);
      Editor.Dialog.messageBox({
        type: "warning",
        title: tr("warn-title"),
        message: tr("remove-current-version-failed"),
      });
    }
  },

  onDownloadNewVersionFailed(event, url, fileName) {
    const imSettings = imIconHelper.getImSettings();
    if (url !== imSettings.plugin_url) {
      return;
    }
    Editor.Dialog.messageBox({
      type: "warning",
      title: tr("warn-title"),
      message: tr("download-new-version-failed"),
    });
  },

  onInstallNewVersionSucceed(event, zipPath) {
    // 新版本插件会接收到这个消息，这里this.newVersionZip已经没了，不太好做精确验证。
    // 简单验证下zip名称中是否包含im-plugin。
    if (zipPath.indexOf("im-plugin") === -1) {
      return;
    }
    Editor.Dialog.messageBox({
      type: "info",
      title: tr("info-title"),
      message: tr("install-new-version-succeed"),
    });
  },

  onInstallNewVersionFailed(event, zipPath) {
    if (zipPath !== this.newVersionZip) {
      return;
    }
    Editor.Dialog.messageBox({
      type: "warning",
      title: tr("warn-title"),
      message: tr("install-new-version-failed"),
    });
  },

  translate(event, key) {
    event.returnValue = tr(key);
  },

  getEntryUrl(event) {
    event.returnValue = imIconHelper.getImSettings().entry_url;
  },

  cleanRequireCaches(...args) {
    const targetPath = path.join(...args);
    if (!fs.existsSync(path)) {
      return;
    }

    if (targetPath.endsWith(".js")) {
      return delete require.cache[require.resolve(targetPath)];
    }

    if (!fs.statSync(path).isDirectory()) {
      return;
    }

    recursive(
      path,
      (filePath) => {
        if (filePath.endsWith(".js") && existsSync(filePath)) {
          delete require.cache[require.resolve(filePath)];
        }
      },
      (file) => {
        if (path.basename(file) === "node_modules") {
          return false;
        }
        if (path.basename(file).startsWith(".")) {
          return false;
        }
        return true;
      }
    );

    function recursive(dir, handle, filter) {
      function step(filePath) {
        if (!existsSync(filePath)) {
          return;
        }
        if (filter ? filter(filePath) : true) {
          handle(filePath);
          if (fs.statSync(filePath).isDirectory()) {
            fs.readdirSync(filePath).forEach((file) =>
              step(path.join(filePath, file))
            );
          }
        }
      }
      step(dir);
    }
  },

  removeDir(dirPath) {
    return new Promise((resolve, reject) => {
      rimraf(dirPath, (err) => {
        if (!err) {
          resolve(null);
        } else {
          reject(err);
        }
      });
    });
  },

  messages: {
    async open(event) {
      imIconHelper.clearUpdateIconTimer();
      imIconHelper.setImPanelBlurred(false);
      if (!panelShown) {
        await this.updateImSettings(); // 更新下是否是VIP的信息
      }
      imIconHelper.updateIcon(0, true);
      Editor.Panel.open("im-plugin");
      if (!panelShown) {
        panelShown = true;
      }
    },

    "panel-ready"(event) {
      const win = BrowserWindow.fromWebContents(event.sender);
      const eventNames = [
        "blur",
        "focus",
        "show",
        "hide",
        "minimize",
        "restore",
      ];
      for (const eventName of eventNames) {
        win.on(eventName, () => {
          event.sender.send("im-plugin:panel-win-state-changed", eventName);
        });
      }

      win.on("blur", () => {
        imIconHelper.setImPanelBlurred(true);
      });

      win.on("focus", () => {
        imIconHelper.updateIcon(0, true);
        imIconHelper.setImPanelBlurred(false);
      });
    },

    close(event) {
      // 如果Panel隐藏了，需要show之后才能关闭，否则会出现在下次面板显示时才瞬间关闭的情况。
      BrowserWindow.fromWebContents(event.sender).show();
      imIconHelper.setImPanelBlurred(true);
      Editor.Panel.close("im-plugin");
    },

    hide(event) {
      imIconHelper.setImPanelBlurred(true);
      BrowserWindow.fromWebContents(event.sender).hide();
    },

    "update-icon"(event, newMsgCount) {
      imIconHelper.updateIcon(newMsgCount);
    },
  },
};