<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\HasilSaw;
use App\Models\PeriodeSeleksi;
use App\Models\Wilayah;
use Illuminate\Http\Request;

class GisController extends Controller
{
    public function index(Request $request)
    {
        $periodeList  = PeriodeSeleksi::where('status', 'selesai')->latest()->get();
        $periodeId    = $request->get('periode_id');

        $periodeAktif = $periodeId
            ? PeriodeSeleksi::find($periodeId)
            : PeriodeSeleksi::where('status', 'selesai')->latest()->first();

        $markers       = $this->buildMarkers($periodeAktif ? $periodeAktif->id : null);
        $totalPenerima = $markers->sum('jumlah_penerima');
        $totalWilayah  = $markers->filter(fn($m) => $m['jumlah_penerima'] > 0)->count();

        // Statistik per dusun untuk periode ini
        $statistikDusun = $markers->groupBy('dusun')->map(function ($items) {
            return $items->sum('jumlah_penerima');
        })->sortDesc();

        return view('admin.gis.index', compact(
            'markers', 'totalPenerima', 'totalWilayah',
            'periodeList', 'periodeAktif', 'statistikDusun'
        ));
    }

    public function data(Request $request)
    {
        $periodeId = $request->get('periode_id');
        $markers   = $this->buildMarkers($periodeId ?: null);

        $totalPenerima = $markers->sum('jumlah_penerima');
        $totalWilayah  = $markers->filter(fn($m) => $m['jumlah_penerima'] > 0)->count();

        // Ambil nama warga penerima per wilayah (untuk popup detail)
        $wargaPerWilayah = [];
        if ($periodeId) {
            $penerima = HasilSaw::where('periode_id', $periodeId)
                ->where('status', 'penerima')
                ->with('warga.wilayah')
                ->orderBy('ranking')
                ->get();

            foreach ($penerima as $h) {
                if ($h->warga && $h->warga->wilayah) {
                    $key = $h->warga->wilayah->dusun . '_' . $h->warga->wilayah->rw;
                    $wargaPerWilayah[$key][] = [
                        'nama'    => $h->warga->nama,
                        'ranking' => $h->ranking,
                        'skor'    => number_format($h->skor_akhir, 4),
                    ];
                }
            }
        }

        return response()->json([
            'markers'        => $markers->values(),
            'totalPenerima'  => $totalPenerima,
            'totalWilayah'   => $totalWilayah,
            'wargaPerWilayah'=> $wargaPerWilayah,
        ]);
    }

    private function buildMarkers(?int $periodeId)
    {
        $wilayah = Wilayah::with('warga')->get();

        $query = HasilSaw::where('status', 'penerima');
        if ($periodeId) {
            $query->where('periode_id', $periodeId);
        }
        $hasilPenerima = $query->get()->groupBy('warga_id');

        return $wilayah->map(function ($w) use ($hasilPenerima) {
            $jumlahPenerima = 0;
            $totalSkor      = 0;
            $count          = 0;

            foreach ($w->warga as $warga) {
                if (isset($hasilPenerima[$warga->id])) {
                    foreach ($hasilPenerima[$warga->id] as $hasil) {
                        $jumlahPenerima++;
                        $totalSkor += $hasil->skor_akhir;
                        $count++;
                    }
                }
            }

            return [
                'dusun'           => $w->dusun,
                'rw'              => $w->rw,
                'latitude'        => (float) $w->latitude,
                'longitude'       => (float) $w->longitude,
                'jumlah_penerima' => $jumlahPenerima,
                'avg_skor'        => $count > 0 ? round($totalSkor / $count, 4) : 0,
                'label'           => "Dusun {$w->dusun} / RW {$w->rw}",
                'key'             => $w->dusun . '_' . $w->rw,
            ];
        })->filter(fn($m) => $m['latitude'] !== 0.0 && $m['longitude'] !== 0.0);
    }
}