package main

import (
	"bytes"
	"encoding/json"
	"io"
	"net/http"
	"path"
	"slices"
	"strings"
)

func isV1(r *http.Request) bool {
	return strings.HasPrefix(r.URL.Path, "/v1/")
}

func (s *S) serveV1(w http.ResponseWriter, r *http.Request) error {
	uid := s.Session(r.Context()).ID
	switch path.Join(r.Method, r.URL.Path) {
	case "GET/v1/state/" + uid:
		name, err := s.games.UserName(r.Context(), uid)
		if err != nil {
			return err
		}
		gids, err := s.games.GamesForUser(r.Context(), uid)
		if err != nil {
			return err
		}
		msg := map[string]any{
			"name": name,
		}
		if len(gids) > 0 {
			party, err := s.games.GameName(r.Context(), gids[0])
			if err != nil {
				return err
			}
			msg["party"] = party
		}
		return json.NewEncoder(w).Encode(msg)
	case "PUT/v1/state/" + uid + "/party":
		return s.serveV1PutParty(w, r)
	default:
		http.NotFound(w, r)
	}
	return nil
}

func (s *S) serveV1PutParty(w http.ResponseWriter, r *http.Request) error {
	userName, err := s.games.UserName(r.Context(), s.Session(r.Context()).ID)
	if err != nil {
		return err
	}

	party, err := io.ReadAll(r.Body)
	if err != nil {
		return err
	}
	party = bytes.TrimSpace(party)
	if len(party) == 0 {
		return nil
	}

	gid, err := s.games.GameByName(r.Context(), string(party))
	if err != nil {
		return err
	}

	games, err := s.games.GamesForUser(r.Context(), gid)
	if err != nil {
		return err
	}

	if slices.Contains(games, gid) {
		return nil
	}
	return s.games.CreateEventPlayerJoin(r.Context(), gid, s.Session(r.Context()).ID, userName)
}