const path = require("path");
const express = require("express");
const cors = require("cors");
const { connect } = require("./db");

const peopleRouter = require("./routes/people");
const projectsRouter = require("./routes/projects");
const tasksRouter = require("./routes/tasks");
const absencesRouter = require("./routes/absences");
const capacityRouter = require("./routes/capacity");

const app = express();
const PORT = process.env.PORT || 3000;

app.use(cors());
app.use(express.json());

app.get("/api/health", (req, res) => res.json({ status: "ok" }));

app.use("/api/people", peopleRouter);
app.use("/api/projects", projectsRouter);
app.use("/api/tasks", tasksRouter);
app.use("/api/absences", absencesRouter);
app.use("/api/capacity", capacityRouter);

// Gebautes Frontend (Vite -> dist) ausliefern
const frontendDist = path.join(__dirname, "..", "public");
app.use(express.static(frontendDist));

// SPA-Fallback: alles, was nicht /api ist, liefert die index.html aus
app.get(/^(?!\/api).*/, (req, res) => {
  res.sendFile(path.join(frontendDist, "index.html"));
});

app.use((err, req, res, next) => {
  console.error(err);
  res.status(500).json({ error: "Interner Serverfehler" });
});

async function start() {
  try {
    await connect();
    app.listen(PORT, () => {
      console.log(`Jahresplanung-Server laeuft auf Port ${PORT}`);
    });
  } catch (err) {
    console.error("Konnte keine Verbindung zu MongoDB herstellen:", err);
    process.exit(1);
  }
}

start();