import express from "express";
import cors from "cors";
import cookieParser from "cookie-parser";

// Import API endpoints
import {
  getTimetable,
  getSubstitutions,
  getHistory,
  getClasses,
  putTimetable,
  getInfo,
  putKey,
  deleteKey,
} from "./api/index.js";
import auth from "./api/auth.js";
import { Parser } from "./parser/index.js";
import { BolleClient } from "./parser/bolle.js";
import { parseSubstitutionPlan } from "./parser/untis.js";
import { registerAdmin } from "./api/admin.js";
import { checkAdmin } from "./api/permission.js";

// Check that credentials are supplied
if (
  !process.env.BOLLE_URL ||
  !process.env.BOLLE_USER ||
  !process.env.BOLLE_KEY
) {
  console.error("Error: Bolle Auth environment variables missing!");
  process.exit(1);
}

// Create the Webserver
const app = express();
const port = process.env.PORT || 3000;
app.use(cors());
app.use(cookieParser());
app.use(express.urlencoded({ extended: true }));
app.use(express.json());

// Initialize the Parser and set it to update the
// substitution plan at the specified update interval
new Parser(
  new BolleClient(
    process.env.BOLLE_URL,
    process.env.BOLLE_USER,
    process.env.BOLLE_KEY,
  ),
  parseSubstitutionPlan,
  process.env.UPDATE_INTERVAL || 1 * 60 * 1000, // Default to 1 minute
);

// Create new Auth class to store sessions
app.post("/auth/login", auth.login);
app.get("/auth/logout", auth.logout);
// Check login for every API request
app.use("/api", auth.checkLogin);
// Provide check endpoint so the frontend
// can check if the user is logged in
app.get("/api/check", (_req, res) => {
  res.sendStatus(200);
});

// Register API endpoints
app.get("/api/info", getInfo);
app.put("/api/key", putKey);
app.delete("/api/key", deleteKey);
app.get("/api/timetable", getTimetable);
app.put("/api/timetable", putTimetable);
app.get("/api/substitutions", getSubstitutions);
app.get("/api/history", getHistory);
app.get("/api/classes", getClasses);
app.post("/api/token", auth.token);

// Register Admin endpoints
app.use("/api/admin", checkAdmin);
registerAdmin(app);

// Respond with 400 for non-existent endpoints
app.get("/api/*", (_req, res) => {
  res.sendStatus(400);
});

// Supply frontend files if any other url
// is requested to make vue router work
app.use("/", express.static("../dist"));
app.use("/*", express.static("../dist"));

app.listen(port, () => {
  console.log(`Server listening on http://localhost:${port}`);
});