Termix/src/backend/starter.ts

import dotenv from "dotenv";
import { promises as fs } from "fs";
import { readFileSync } from "fs";
import path from "path";
import { fileURLToPath } from "url";
import { AutoSSLSetup } from "./utils/auto-ssl-setup.js";
import { AuthManager } from "./utils/auth-manager.js";
import { DataCrypto } from "./utils/data-crypto.js";
import { SystemCrypto } from "./utils/system-crypto.js";
import {
  systemLogger,
  versionLogger,
  setGlobalLogLevel,
} from "./utils/logger.js";

(async () => {
  const initStartTime = Date.now();
  try {
    dotenv.config({ quiet: true });

    const dataDir = process.env.DATA_DIR || "./db/data";
    const envPath = path.join(dataDir, ".env");
    try {
      await fs.access(envPath);
      const persistentConfig = dotenv.config({ path: envPath, quiet: true });
      if (persistentConfig.parsed) {
        Object.assign(process.env, persistentConfig.parsed);
      }
    } catch {
      // expected - env file may not exist
    }

    systemLogger.info("Termix backend initialization started", {
      operation: "backend_init_start",
      nodeEnv: process.env.NODE_ENV || "production",
      port: process.env.PORT || 4090,
    });

    let version = "unknown";

    const versionSources = [
      () => process.env.VERSION,
      () => {
        try {
          const packageJsonPath = path.join(process.cwd(), "package.json");
          const packageJson = JSON.parse(
            readFileSync(packageJsonPath, "utf-8"),
          );
          return packageJson.version;
        } catch {
          return null;
        }
      },
      () => {
        try {
          const __filename = fileURLToPath(import.meta.url);
          const packageJsonPath = path.join(
            path.dirname(__filename),
            "../../../package.json",
          );
          const packageJson = JSON.parse(
            readFileSync(packageJsonPath, "utf-8"),
          );
          return packageJson.version;
        } catch {
          return null;
        }
      },
      () => {
        try {
          const packageJsonPath = path.join("/app", "package.json");
          const packageJson = JSON.parse(
            readFileSync(packageJsonPath, "utf-8"),
          );
          return packageJson.version;
        } catch {
          return null;
        }
      },
    ];

    for (const getVersion of versionSources) {
      try {
        const foundVersion = getVersion();
        if (foundVersion && foundVersion !== "unknown") {
          version = foundVersion;
          break;
        }
      } catch {
        continue;
      }
    }
    versionLogger.info(`Termix Backend starting - Version: ${version}`, {
      operation: "startup",
      version: version,
    });

    const systemCrypto = SystemCrypto.getInstance();
    await systemCrypto.initializeJWTSecret();
    await systemCrypto.initializeDatabaseKey();
    await systemCrypto.initializeEncryptionKey();
    await systemCrypto.initializeInternalAuthToken();

    await AutoSSLSetup.initialize();
    systemLogger.success("SSL setup completed", {
      operation: "backend_init_ssl",
      sslEnabled: process.env.ENABLE_SSL === "true",
    });

    const dbModule = await import("./database/db/index.js");
    await dbModule.initializeDatabase();
    systemLogger.success("Database initialized", {
      operation: "backend_init_db",
    });

    const authManager = AuthManager.getInstance();
    await authManager.initialize();
    DataCrypto.initialize();

    import("./utils/opkssh-binary-manager.js").then(
      ({ OPKSSHBinaryManager }) => {
        OPKSSHBinaryManager.ensureBinary().catch((error) => {
          const dataDir =
            process.env.DATA_DIR || path.join(process.cwd(), "db", "data");
          systemLogger.warn(
            "Failed to initialize OPKSSH binary - OPKSSH authentication will not be available",
            {
              operation: "opkssh_binary_init_failed",
              error: error instanceof Error ? error.message : "Unknown error",
              stack: error instanceof Error ? error.stack : undefined,
              platform: process.platform,
              arch: process.arch,
              dataDir,
            },
          );
        });
      },
    );

    const dbServer = await import("./database/database.js");
    await (dbServer as unknown as { serverReady: Promise<void> }).serverReady;
    await import("./ssh/terminal.js");
    await import("./ssh/tunnel.js");
    await import("./ssh/file-manager.js");
    await import("./ssh/host-metrics.js");
    await import("./ssh/docker.js");
    await import("./ssh/docker-console.js");
    await import("./ssh/tmux-monitor.js"); // --- tmux-monitor ---
    await import("./serial/serial.js");
    await import("./dashboard.js");
    await import("./homepage.js");

    // Initialize log level from database settings
    const { getDb: getDbForSettings } = await import("./database/db/index.js");
    const settingsDb = getDbForSettings();
    const logLevelRow = settingsDb.$client
      .prepare("SELECT value FROM settings WHERE key = 'log_level'")
      .get() as { value: string } | undefined;
    if (logLevelRow) {
      setGlobalLogLevel(logLevelRow.value);
      systemLogger.info(`Log level set to: ${logLevelRow.value}`, {
        operation: "log_level_init",
      });
    }

    // Initialize Guacamole server for RDP/VNC/Telnet support
    const { getDb: getDbForGuac } = await import("./database/db/index.js");
    const guacDb = getDbForGuac();
    const guacEnabledRow = guacDb.$client
      .prepare("SELECT value FROM settings WHERE key = 'guac_enabled'")
      .get() as { value: string } | undefined;
    const guacEnabled = guacEnabledRow
      ? guacEnabledRow.value !== "false"
      : true;

    if (process.env.ENABLE_GUACAMOLE !== "false" && guacEnabled) {
      import("./guacamole/guacamole-server.js")
        .then(() => {
          systemLogger.info("Guacamole server initialized", {
            operation: "guac_init",
          });
        })
        .catch((error) => {
          systemLogger.warn(
            "Failed to initialize Guacamole server (guacd may not be available)",
            {
              operation: "guac_init_skip",
              error: error instanceof Error ? error.message : "Unknown error",
            },
          );
        });
    }

    systemLogger.success("Termix backend started successfully", {
      operation: "backend_init_complete",
      port: process.env.PORT || 4090,
      ssl: process.env.ENABLE_SSL === "true",
      duration: Date.now() - initStartTime,
    });

    const gracefulShutdown = async (signal: string) => {
      systemLogger.info(`Received ${signal}, initiating graceful shutdown...`, {
        operation: "shutdown",
      });
      try {
        const { saveMemoryDatabaseToFile } =
          await import("./database/db/index.js");
        await saveMemoryDatabaseToFile();
        systemLogger.info("Database saved to disk before exit", {
          operation: "shutdown_db_saved",
        });
      } catch (error) {
        systemLogger.error("Failed to save database during shutdown", error, {
          operation: "shutdown_db_save_failed",
        });
      }
      process.exit(0);
    };

    process.on("SIGINT", () => gracefulShutdown("SIGINT"));
    process.on("SIGTERM", () => gracefulShutdown("SIGTERM"));

    process.on("message", (msg: { type?: string }) => {
      if (msg?.type === "shutdown") {
        gracefulShutdown("IPC shutdown");
      }
    });

    process.on("uncaughtException", (error) => {
      systemLogger.error("Uncaught exception occurred", error, {
        operation: "error_handling",
      });
      process.exit(1);
    });

    process.on("unhandledRejection", (reason) => {
      systemLogger.error("Unhandled promise rejection", reason, {
        operation: "error_handling",
      });
      process.exit(1);
    });
  } catch (error) {
    systemLogger.error("Failed to initialize backend services", error, {
      operation: "startup_failed",
    });
    process.exit(1);
  }
})();