<?php

namespace App\Http\Controllers\Siswa;

use App\Http\Controllers\Controller;
use App\Models\Leaderboard;
use Illuminate\Support\Facades\Auth;
use Carbon\Carbon;

class LeaderboardController extends Controller
{
    public function index()
    {
        $siswa = Auth::guard('siswa')->user();

        $now         = Carbon::now();
        $semester    = $now->month >= 7 ? '1' : '2';
        $tahunAjaran = $now->month >= 7
            ? $now->year . '/' . ($now->year + 1)
            : ($now->year - 1) . '/' . $now->year;

        // Top leaderboard kelas siswa ini
        $leaderboard = Leaderboard::with('siswa')
            ->where('id_kelas', $siswa->id_kelas)
            ->where('semester', $semester)
            ->where('tahun_ajaran', $tahunAjaran)
            ->orderBy('total_exp', 'desc')
            ->get()
            ->map(function ($item, $i) {
                return [
                    'ranking' => $i + 1,
                    'nama'    => optional($item->siswa)->nama ?? '-',
                    'nisn'    => optional($item->siswa)->nisn ?? '-',
                    'exp'     => $item->total_exp,
                    'id_siswa'=> $item->id_siswa,
                ];
            });

        // Posisi siswa yang login
        $myRank = $leaderboard->firstWhere('id_siswa', $siswa->id_siswa);

        return view('siswa.leaderboard.index', compact(
            'leaderboard', 'myRank', 'semester', 'tahunAjaran'
        ));
    }
}