import { app, BrowserWindow } from "electron";
import path from "node:path";

import { getRuntimeConfig } from "../config/runtime-config";
import { showFatalError, log } from "../errors/error-presenter";
import { createNodecgProcessManager } from "../nodecg/process-manager";
import { prepareUserNodecgRuntime } from "../nodecg/runtime-provisioner";
import { scheduleUpdateCheck } from "../updates/update-service";
import { createLoadingWindow, createMainWindow } from "../windows/window-service";
import { createApplicationController } from "./application-controller";
import { getApplicationPaths } from "./paths";

export function bootstrap(): void {
  const appConfig = getRuntimeConfig();
  const isDev = !app.isPackaged;
  const paths = getApplicationPaths({
    appConfig,
    appDataPath: app.getPath("appData"),
    compiledMainDir: path.resolve(__dirname, ".."),
    isDev,
    resourcesPath: process.resourcesPath,
  });

  app.setName(appConfig.title);
  app.setPath("userData", paths.userDataPath);

  const hasSingleInstanceLock = app.requestSingleInstanceLock();

  if (!hasSingleInstanceLock) {
    app.quit();
  }

  const controller = createApplicationController({
    appConfig,
    appVersion: app.getVersion(),
    isPackaged: app.isPackaged,
    isWindows: process.platform === "win32",
    paths,
    deps: {
      createLoadingWindow: () =>
        createLoadingWindow({
          allowDevTools: isDev,
          appConfig,
          rootPath: paths.rootPath,
        }),
      createMainWindow: () =>
        createMainWindow({
          allowDevTools: isDev,
          appConfig,
          rootPath: paths.rootPath,
          mainDashboardUrl: paths.mainDashboardUrl,
        }),
      createNodecgProcessManager: (runtimePath) =>
        createNodecgProcessManager({
          isDev,
          nodecgRootPath: runtimePath,
          nodecgBaseUrl: paths.nodecgBaseUrl,
          appConfig,
          log,
        }),
      getAllWindows: () => BrowserWindow.getAllWindows(),
      log,
      prepareRuntime: prepareUserNodecgRuntime,
      relaunch: () => app.relaunch(),
      scheduleUpdateCheck: ({ getParentWindow, beforeInstall }) => {
        scheduleUpdateCheck({
          appConfig,
          rootPath: paths.rootPath,
          getParentWindow: () => getParentWindow() as BrowserWindow | null,
          beforeInstall,
          log,
        });
      },
      setAppUserModelId: (userModelId) => app.setAppUserModelId(userModelId),
      exit: (code) => app.exit(code),
    },
  });

  app.on("ready", () => {
    if (!hasSingleInstanceLock) {
      return;
    }

    controller.launch().catch((error: unknown) => {
      showFatalError("No se pudo iniciar Scoreko.", error);
      app.exit(1);
    });
  });

  app.on("second-instance", () => {
    controller.focusExistingWindow();
  });

  app.on("activate", () => {
    controller.activate().catch((error: unknown) => {
      showFatalError("No se pudo reactivar Scoreko.", error);
    });
  });

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

  app.on("before-quit", (event) => {
    if (controller.getState() === "stopping" || controller.getState() === "stopped") {
      return;
    }

    event.preventDefault();

    controller.stopNodecgGracefully().finally(() => {
      app.quit();
    });
  });

  app.on("will-quit", () => {
    if (controller.getState() !== "stopping" && controller.getState() !== "stopped") {
      void controller.stopNodecgGracefully();
    }
  });

  process.on("exit", () => {
    if (controller.getState() !== "stopping" && controller.getState() !== "stopped") {
      void controller.stopNodecgGracefully();
    }
  });

  process.on("uncaughtException", (error) => {
    showFatalError("Unexpected error in Electron main process.", error);
  });

  process.on("unhandledRejection", (reason) => {
    showFatalError("Unhandled promise in Electron main process.", reason);
  });
}