"use strict";

const path = require("node:path");
const {
  app,
  BrowserWindow,
  shell,
  session,
  safeStorage,
  Tray,
  Menu,
  Notification,
} = require("electron");
const { ConfigStore } = require("./src/main/config-store.cjs");
const { GitService } = require("./src/main/git-service.cjs");
const { GiteaService } = require("./src/main/gitea-service.cjs");
const { RepositoryService } = require("./src/main/repository-service.cjs");
const { DeploymentService } = require("./src/main/deployment-service.cjs");
const { RepositoryMonitor } = require("./src/main/repository-monitor.cjs");
const { DiagnosticsService } = require("./src/main/diagnostics-service.cjs");
const { PreflightService } = require("./src/main/preflight-service.cjs");
const { UpdateService } = require("./src/main/update-service.cjs");
const { SshService } = require("./src/main/ssh-service.cjs");
const {
  UnraidDeploymentService,
} = require("./src/main/unraid-deployment-service.cjs");
const { AuditService } = require("./src/main/audit-service.cjs");
const { GitValidatorService } = require("./src/main/git-validator-service.cjs");
const {
  ExternalToolsService,
} = require("./src/main/external-tools-service.cjs");
const { registerIpc } = require("./src/main/ipc.cjs");

let mainWindow;
let repositoryMonitor;
let operationTimer;
let diagnostics;
let configStore;
let tray;
let quitCleanupStarted = false;

function broadcast(channel, payload) {
  for (const window of BrowserWindow.getAllWindows()) {
    if (!window.isDestroyed()) window.webContents.send(channel, payload);
  }
}

function showMainWindow() {
  if (!mainWindow || mainWindow.isDestroyed()) createWindow();
  if (mainWindow.isMinimized()) mainWindow.restore();
  mainWindow.show();
  mainWindow.focus();
}

function notify(title, body) {
  if (
    !configStore?.data.preferences.notificationsEnabled ||
    !Notification.isSupported()
  )
    return;
  const notification = new Notification({
    title,
    body,
    icon: path.join(__dirname, "build", "icon.png"),
  });
  notification.on("click", showMainWindow);
  notification.show();
}

function configureDesktopIntegration() {
  const preferences = configStore?.data.preferences || {};
  if (preferences.trayEnabled && !tray) {
    tray = new Tray(
      path.join(
        __dirname,
        "build",
        process.platform === "win32" ? "icon.ico" : "icon.png",
      ),
    );
    tray.setToolTip("ForgeFlow");
    tray.on("double-click", showMainWindow);
  } else if (!preferences.trayEnabled && tray) {
    tray.destroy();
    tray = null;
  }
  if (tray)
    tray.setContextMenu(
      Menu.buildFromTemplate([
        { label: "Open ForgeFlow", click: showMainWindow },
        { type: "separator" },
        { label: "Quit", click: () => app.quit() },
      ]),
    );
  if (app.isPackaged && ["win32", "darwin"].includes(process.platform)) {
    app.setLoginItemSettings({
      openAtLogin: Boolean(preferences.startAtLogin),
    });
  }
}

function createWindow() {
  mainWindow = new BrowserWindow({
    width: 1480,
    height: 940,
    minWidth: 1120,
    minHeight: 720,
    show: false,
    backgroundColor: "#0b0e14",
    title: "ForgeFlow",
    icon: path.join(__dirname, "build", "icon.png"),
    autoHideMenuBar: true,
    titleBarStyle: process.platform === "darwin" ? "hiddenInset" : "default",
    webPreferences: {
      preload: path.join(__dirname, "preload.cjs"),
      contextIsolation: true,
      nodeIntegration: false,
      sandbox: true,
      webSecurity: true,
      spellcheck: false,
    },
  });

  mainWindow.loadFile(path.join(__dirname, "src", "renderer", "index.html"));
  mainWindow.once("ready-to-show", () => {
    mainWindow.show();
    diagnostics?.info("window.ready", { size: mainWindow.getSize() });
  });
  mainWindow.on("unresponsive", () =>
    diagnostics?.warning("window.unresponsive", {}),
  );
  mainWindow.webContents.on("render-process-gone", (_event, details) =>
    diagnostics?.error("renderer.process.gone", details),
  );
  mainWindow.webContents.on(
    "did-fail-load",
    (_event, code, description, validatedUrl) =>
      diagnostics?.error("renderer.load.failed", {
        code,
        description,
        validatedUrl,
      }),
  );
  mainWindow.webContents.setWindowOpenHandler(({ url }) => {
    if (/^https?:\/\//i.test(url))
      shell.openExternal(url).catch((error) =>
        diagnostics?.warning("external-link.open.failed", {
          url,
          message: error.message,
        }),
      );
    return { action: "deny" };
  });
  mainWindow.webContents.on("will-navigate", (event, url) => {
    if (url !== mainWindow.webContents.getURL()) event.preventDefault();
  });
  mainWindow.on("close", (event) => {
    if (
      !quitCleanupStarted &&
      configStore?.data.preferences.closeToTray &&
      configStore?.data.preferences.trayEnabled
    ) {
      event.preventDefault();
      mainWindow.hide();
    }
  });
}

app
  .whenReady()
  .then(async () => {
    session.defaultSession.webRequest.onHeadersReceived((details, callback) => {
      callback({
        responseHeaders: {
          ...details.responseHeaders,
          "Content-Security-Policy": [
            "default-src 'self'; img-src 'self' data:; style-src 'self' 'unsafe-inline'; script-src 'self'; connect-src 'self'",
          ],
        },
      });
    });

    const userDataPath = app.getPath("userData");
    const store = new ConfigStore(userDataPath);
    configStore = store;
    await store.load();
    diagnostics = new DiagnosticsService({
      userDataPath,
      appInfo: {
        name: app.getName(),
        version: app.getVersion(),
        packaged: app.isPackaged,
      },
      secretProvider: () => [
        store.getToken(),
        ...(store.data.servers || []).flatMap((server) => {
          try {
            const credentials = store.getServerCredentials(server.id);
            return [credentials.password, credentials.passphrase];
          } catch {
            return [];
          }
        }),
      ],
      preferencesProvider: () => store.data.preferences,
    });
    await diagnostics.initialize();
    const audit = new AuditService({
      userDataPath,
      appInfo: { version: app.getVersion() },
    });
    await audit.initialize();

    process.on("uncaughtException", (error) => {
      diagnostics
        ?.error("process.uncaught-exception", error)
        .finally(() => app.exit(1));
    });
    process.on("unhandledRejection", (reason) =>
      diagnostics?.error(
        "process.unhandled-rejection",
        reason instanceof Error ? reason : { reason },
      ),
    );

    const git = new GitService();
    const externalTools = new ExternalToolsService(store);
    const gitea = new GiteaService(store, diagnostics);
    const repositories = new RepositoryService(store, git, gitea, diagnostics);
    const deployments = new DeploymentService(store, gitea, git, diagnostics);
    const ssh = new SshService({ store, diagnostics });
    const auditedOperationStates = new Set();
    const reportOperationChange = (payload) => {
      broadcast("operations:changed", payload);
      const operation = payload?.operation;
      if (
        operation &&
        ["success", "failed", "rolled-back"].includes(operation.status)
      ) {
        const key = `${operation.id}:${operation.status}`;
        if (!auditedOperationStates.has(key)) {
          auditedOperationStates.add(key);
          notify(
            `Deployment ${operation.status}`,
            `${operation.repository || "Repository"} · ${operation.shortSha || operation.sha?.slice(0, 7) || ""}`,
          );
          audit
            .append("deployment.completed", {
              repository: operation.repository,
              profileId: operation.profileId,
              sha: operation.sha,
              result: operation.status,
              note: operation.releaseNote || "",
            })
            .catch((error) => diagnostics.warning("audit.write.failed", error));
        }
      }
    };
    const unraid = new UnraidDeploymentService({
      store,
      ssh,
      git,
      gitea,
      diagnostics,
      sourcePath: app.getAppPath(),
      onOperationChange: reportOperationChange,
    });
    const updates = new UpdateService({
      store,
      gitea,
      diagnostics,
      appInfo: {
        version: app.getVersion(),
        packaged: app.isPackaged,
        executablePath: process.execPath,
        portableExecutablePath: process.env.PORTABLE_EXECUTABLE_FILE || null,
      },
      sourcePath: app.getAppPath(),
      userDataPath,
    });
    const preflight = new PreflightService({
      store,
      git,
      gitea,
      deployments,
      diagnostics,
      userDataPath,
      secureStorageAvailable: () => safeStorage.isEncryptionAvailable(),
    });
    const gitValidator = new GitValidatorService({
      git,
      gitea,
      diagnostics,
    });
    repositoryMonitor = new RepositoryMonitor({
      store,
      git,
      diagnostics,
      onChange: (payload) => broadcast("repositories:changed", payload),
    });
    repositoryMonitor.restart();
    registerIpc({
      store,
      git,
      gitea,
      repositories,
      deployments,
      unraid,
      ssh,
      updates,
      preflight,
      gitValidator,
      diagnostics,
      audit,
      externalTools,
      monitor: repositoryMonitor,
      onPreferencesChanged: configureDesktopIntegration,
    });
    configureDesktopIntegration();
    createWindow();

    if (
      store.data.setupComplete &&
      store.data.updates?.autoCheck &&
      store.getToken()
    ) {
      setTimeout(async () => {
        try {
          const status = await updates.check();
          broadcast("updates:changed", status);
        } catch (error) {
          await diagnostics.warning("updates.startup-check.failed", {
            message: error.message,
            code: error.code,
          });
        }
      }, 2500).unref?.();
    }

    const gitAvailability = await git.isAvailable();
    await diagnostics.info("app.ready", {
      platform: process.platform,
      arch: process.arch,
      setupComplete: store.data.setupComplete,
      git: gitAvailability,
      secureStorageAvailable: safeStorage.isEncryptionAvailable(),
    });

    const scheduleOperationPoll = () => {
      if (operationTimer) clearTimeout(operationTimer);
      const intervalMs =
        Math.max(3, Number(store.data.preferences.operationPollSeconds) || 5) *
        1000;
      operationTimer = setTimeout(async () => {
        try {
          if (store.data.setupComplete) {
            const active = store.data.operations.some(
              (item) =>
                item.type === "deployment" &&
                !["success", "failed", "cancelled", "rolled-back"].includes(
                  item.status,
                ),
            );
            if (active) {
              const [actions, sshOperations] = await Promise.all([
                store.getToken()
                  ? deployments
                      .refreshActiveOperations()
                      .catch(async (error) => {
                        await diagnostics.error(
                          "operation-monitor.actions.failed",
                          error,
                        );
                        return [];
                      })
                  : [],
                unraid.refreshActiveOperations().catch(async (error) => {
                  await diagnostics.error(
                    "operation-monitor.unraid.failed",
                    error,
                  );
                  return [];
                }),
              ]);
              const updated = [...actions, ...sshOperations];
              if (updated.length) {
                broadcast("operations:changed", { operations: updated });
                for (const operation of updated.filter((item) =>
                  ["success", "failed", "rolled-back"].includes(item.status),
                ))
                  reportOperationChange({ operation });
              }
            }
          }
        } catch (error) {
          await diagnostics.error("operation-monitor.tick.failed", error);
        } finally {
          if (!quitCleanupStarted) scheduleOperationPoll();
        }
      }, intervalMs);
      operationTimer.unref?.();
    };
    scheduleOperationPoll();

    app.on("activate", () => {
      if (BrowserWindow.getAllWindows().length === 0) createWindow();
    });
  })
  .catch(async (error) => {
    console.error("[startup]", error);
    await diagnostics?.error("app.startup.failed", error);
    await diagnostics?.flush();
    app.exit(1);
  });

app.on("before-quit", (event) => {
  if (quitCleanupStarted) return;
  event.preventDefault();
  quitCleanupStarted = true;
  repositoryMonitor?.stop();
  if (operationTimer) clearTimeout(operationTimer);
  Promise.resolve()
    .then(() => diagnostics?.info("app.quitting", {}))
    .then(() => diagnostics?.flush())
    .finally(() => app.quit());
});

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