import { onRequest } from "firebase-functions/https";
import { requireAuth } from "../middleware/auth.js";
import { HttpError, sendError } from "../middleware/errors.js";
import {
  createPrediction,
  updatePrediction,
  getMyVotes,
  getSummary,
  listGamesByDate,
} from "../services/predictionService.js";
import { getScoreboard } from "../services/scoreboardService.js";

export const prediction = onRequest(async (req, res) => {
  const segs = req.path.replace(/^\/+|\/+$/g, "").split("/");
  const tail = segs[segs.length - 1] ?? "";

  try {
    if (tail === "games" && req.method === "GET") {
      const date = String(req.query.date ?? "");
      const games = await listGamesByDate(date);
      res.status(200).json({ date, games });
      return;
    }

    if (tail === "scoreboard" && req.method === "GET") {
      const uid = await requireAuth(req);
      const type = String(req.query.type ?? "");
      if (type !== "team" && type !== "overall") {
        throw new HttpError(400, `invalid type: ${type}`);
      }
      const result = await getScoreboard(uid, type);
      res.set("Cache-Control", "private, max-age=60");
      res.status(200).json(result);
      return;
    }

    if (tail === "summary" && req.method === "GET") {
      const gameId = String(req.query.gameId ?? "");
      const result = await getSummary(gameId);
      res.set("Cache-Control", "public, max-age=5");
      res.status(200).json(result);
      return;
    }

    if (tail === "prediction" || segs.length === 1) {
      if (req.method === "POST") {
        const uid = await requireAuth(req);
        const result = await createPrediction(uid, req.body ?? {});
        res.status(201).json(result);
        return;
      }
      if (req.method === "PUT") {
        const uid = await requireAuth(req);
        const result = await updatePrediction(uid, req.body ?? {});
        res.status(200).json(result);
        return;
      }
      if (req.method === "GET") {
        const uid = await requireAuth(req);
        const date = String(req.query.date ?? "");
        const result = await getMyVotes(uid, date);
        res.status(200).json(result);
        return;
      }
    }

    res.status(404).json({ error: `Unknown: ${req.method} ${req.path}` });
  } catch (err) {
    sendError(res, err);
  }
});