import express from "express";
import cors from "cors";
import helmet from "helmet";
import morgan from "morgan";
import { config } from "../config/index.js";
import { port } from "../config/server.js";
import { db } from "../config/db.config.js";
import { qdrant } from "../services/qdrantClient.js";
import { errorHandler } from "../middleware/ErrorHandler.js";
import { Roteamento } from "../routes/index.js";
import { scheduleCleanup } from "../jobs/cleanupTokens.js";

export class ServerFactory {
  static Iniciar() {
    const app = express();

    app.disable("x-powered-by");
    app.use(helmet());
    app.use(
      cors({
        origin: config.corsOrigin,
        credentials: true
      })
    );
    app.use(express.json({ limit: "10mb" }));
    app.use(morgan("dev"));

    app.get("/health", async (_req, res) => {
      const checks = { api: true, db: false, qdrant: false, ollama: false };

      try {
        await db.raw("SELECT 1");
        checks.db = true;
      } catch {}

      try {
        await qdrant.getCollections();
        checks.qdrant = true;
      } catch {}

      try {
        const r = await fetch(`${config.ollama.url}/api/tags`, { signal: AbortSignal.timeout(3000) });
        checks.ollama = r.ok;
      } catch {}

      const ok = Object.values(checks).every(Boolean);
      res.status(ok ? 200 : 503).json({ ok, checks });
    });

    Roteamento.IniciarRoteamento(app);
    app.use(errorHandler);

    const server = app.listen(port, () => {
      process.stdout.write(`API listening on http://localhost:${port}\n`);
      scheduleCleanup();
    });

    this.app = app;
    return server;
  }
}

export default ServerFactory;