import { createApp } from "./app";
import { createDatabase, readDatabaseEnvironment } from "./config/database";
import { readServerEnvironment } from "./config/env-schema";
import { createIdentityRuntime } from "./infrastructure/http/identity-runtime";

async function start(): Promise<void> {
  const environment = readServerEnvironment(process.env);
  const databaseEnvironment = readDatabaseEnvironment(process.env);
  const database = createDatabase(databaseEnvironment);

  try {
    const identity = await createIdentityRuntime(database, databaseEnvironment);
    const server = createApp(undefined, identity).listen(environment.PORT, "127.0.0.1", () => {
      console.info(JSON.stringify({ event: "server_started", port: environment.PORT }));
    });

    server.on("error", (error) => {
      identity.stop();
      database
        .close()
        .catch(() => console.error(JSON.stringify({ event: "database_close_failed" })));
      console.error(JSON.stringify({ event: "server_start_failed", message: error.message }));
      process.exitCode = 1;
    });
    let stopping = false;

    const shutdown = () => {
      if (stopping) {
        return;
      }
      stopping = true;
      identity.stop();
      server.close((error) => {
        if (error) {
          console.error(JSON.stringify({ event: "server_close_failed" }));
          process.exitCode = 1;
        }
        database.close().catch(() => {
          console.error(JSON.stringify({ event: "database_close_failed" }));
          process.exitCode = 1;
        });
      });
    };

    process.once("SIGINT", shutdown);
    process.once("SIGTERM", shutdown);
  } catch (error) {
    // El fallo del cleanup no debe sustituir la causa original del arranque.
    await database.close().catch(() => {
      console.error(JSON.stringify({ event: "database_close_failed" }));
    });
    throw error;
  }
}

start().catch((error: unknown) => {
  const message = error instanceof Error ? error.message : "Unknown startup failure";

  console.error(JSON.stringify({ event: "server_start_failed", message }));
  process.exitCode = 1;
});