import express, { type Request, Response, NextFunction } from "express";
import session from "express-session";
import connectPgSimple from "connect-pg-simple";
import { pool } from "./db";
import { registerRoutes } from "./routes";
import { createServer } from "http";

const app = express();
const httpServer = createServer(app);

app.use(express.json({ limit: "2mb" }));
app.use(express.urlencoded({ extended: false }));

// ── Session ────────────────────────────────────────────────────────────────────
const PgSession = connectPgSimple(session);

app.use(
  session({
    store: new PgSession({
      pool,
      tableName: "user_sessions",
      createTableIfMissing: true,
    }),
    secret: process.env.SESSION_SECRET || "change-me-in-production",
    resave: false,
    saveUninitialized: false,
    cookie: {
      secure: process.env.NODE_ENV === "production",
      httpOnly: true,
      maxAge: 30 * 24 * 60 * 60 * 1000, // 30 days
    },
  })
);

// ── API Routes ─────────────────────────────────────────────────────────────────
registerRoutes(app);

// ── Error Handler ─────────────────────────────────────────────────────────────
app.use((err: any, _req: Request, res: Response, _next: NextFunction) => {
  const status = err.status || err.statusCode || 500;
  const message = err.message || "Internal Server Error";
  console.error(`[error] ${status} —`, message);
  res.status(status).json({ error: message });
});

// ── Dev/Prod Vite ─────────────────────────────────────────────────────────────
async function start() {
  if (process.env.NODE_ENV !== "production") {
    const { setupVite } = await import("./vite");
    await setupVite(httpServer, app);
  } else {
    const { serveStatic } = await import("./vite");
    serveStatic(app);
  }

  const port = parseInt(process.env.PORT || "5000");
  httpServer.listen(port, "0.0.0.0", () => {
    console.log(`[notshop] Running on port ${port} (${process.env.NODE_ENV || "development"})`);
  });
}

start().catch((err) => {
  console.error("[notshop] Failed to start:", err);
  process.exit(1);
});