import express from "express";
import path from "path";
const app = express();
import fs from "fs/promises";
import { getCurrentInterval } from "./scheduleRules.js";

const PORT = process.env.PORT || 3000;

app.get('/', async (_, res) => {
  const dataStr = await fs.readFile(path.join(process.cwd(), "db", "current.json"), "utf8");
  const data = JSON.parse(dataStr);

  data["status"]["currentUpdateSchedule"] = getCurrentInterval();

  res.json(data);
});

app.get("/status", async (_, res) => {
  const dataStr = await fs.readFile(path.resolve("./volume/customState.json"), {encoding: "utf8"});
  const data = JSON.parse(dataStr);

  if (data.working) {
    res.json({ working: true })
  } else {
    res.json({ working: data.working, message: data.message })
  }
})

app.post("/report", async (req, res) => {
  const { class: className, location, content } = req.body;
  if (!className || !location || !content) {
    return res.status(400).json({ error: "Missing required fields." });
  }
  if (!["TIMETABLE", "ABSENCES", "OTHER"].includes(location)) {
    return res.status(400).json({ error: "Invalid location value." });
  }


  const url = `https://n8n.local.jzitnik.dev/webhook/${process.env.WEBHOOK_UUID}`;

  const resp = await fetch(url, {
    method: "POST",
    headers: {
      "Content-Type": "text/plain",
    },
    body: `${content}\n\nClass: ${className}\nLocation: ${location}`,
  });

  if (!resp.ok) {
    throw new Error(`Request failed`);
  }

  res.status(200).json({ message: "Report received successfully." });
});

app.listen(PORT, () => {
  console.log(`Server is running at http://localhost:${PORT}`);
});