<?php

namespace App\Http\Controllers\Web\Dashboard;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Str;

use App\Models\Pertanian\Petani;
use App\Models\Pertanian\Komoditas;
use App\Models\Pertanian\Lahan;
use App\Models\Pertanian\PendapatanKomoditas;

class DemografiPetaniController extends Controller
{
    public function index(Request $request)
    {
        $totalPetani        = Petani::count();
        $petaniLakilaki     = Petani::where('jenis_kelamin', 1)->count();
        $petaniPerempuan    = Petani::where('jenis_kelamin', 0)->count();
        $totalKomoditas     = Petani::whereNotNull('komoditas_id')
                                ->distinct()
                                ->count('komoditas_id');
        $totalLuasLahan     = Lahan::has('petani')
                                ->sum('luas_lahan');
        $ratarataLuasLahan  = $totalLuasLahan && $totalPetani ? $totalLuasLahan / $totalPetani : 0;

        $umurKurang30 = Petani::whereNotNull('tanggal_lahir')->whereRaw("EXTRACT(YEAR FROM AGE(CURRENT_DATE, tanggal_lahir)) < 30")->count();
        $umur30sampai39 = Petani::whereNotNull('tanggal_lahir')->whereRaw("EXTRACT(YEAR FROM AGE(CURRENT_DATE, tanggal_lahir)) BETWEEN 30 AND 39")->count();
        $umur40sampai49 = Petani::whereNotNull('tanggal_lahir')->whereRaw("EXTRACT(YEAR FROM AGE(CURRENT_DATE, tanggal_lahir)) BETWEEN 40 AND 49")->count();
        $umur50sampai59 = Petani::whereNotNull('tanggal_lahir')->whereRaw("EXTRACT(YEAR FROM AGE(CURRENT_DATE, tanggal_lahir)) BETWEEN 50 AND 59")->count();
        $umur60keatas = Petani::whereNotNull('tanggal_lahir')->whereRaw("EXTRACT(YEAR FROM AGE(CURRENT_DATE, tanggal_lahir)) >= 60")->count();

        $pendidikanCounts = Petani::whereNotNull('pendidikan_terakhir')
            ->select('pendidikan_terakhir', DB::raw('COUNT(*) as total'))
            ->groupBy('pendidikan_terakhir')
            ->pluck('total', 'pendidikan_terakhir');

        $pendidikan = [
            'tidak_sekolah' => (int) ($pendidikanCounts['01_tidak_sekolah'] ?? 0),
            'sd'            => (int) ($pendidikanCounts['02_sd'] ?? 0),
            'smp'           => (int) ($pendidikanCounts['03_smp'] ?? 0),
            'sma'           => (int) ($pendidikanCounts['04_sma'] ?? 0),
            'diploma'       => (int) ($pendidikanCounts['05_diploma'] ?? 0),

            's1_keatas' =>
                (int) ($pendidikanCounts['06_sarjana'] ?? 0) +
                (int) ($pendidikanCounts['07_magister'] ?? 0),
        ];

        $komoditasUtama = Komoditas::query()
            ->whereHas('petani')
            ->withCount('petani')
            ->orderByDesc('petani_count')
            ->get(['id', 'nama']);

        $luasLahanPerPetani = Lahan::has('petani')
            ->select('petani_id')
            ->selectRaw('SUM(luas_lahan) as total_luas')
            ->groupBy('petani_id')
            ->get();

        $luasLahan = [
            'kurang_05' => $luasLahanPerPetani->filter(fn ($item) => $item->total_luas < 5000)->count(),
            '05_1' => $luasLahanPerPetani->filter(fn ($item) => $item->total_luas >= 5000 && $item->total_luas <= 10000)->count(),
            '1_2' => $luasLahanPerPetani->filter(fn ($item) => $item->total_luas > 10000 && $item->total_luas <= 20000)->count(),
            'lebih_2' => $luasLahanPerPetani->filter(fn ($item) => $item->total_luas > 20000)->count(),
        ];

        $pendapatanPerPetani = PendapatanKomoditas::with('sosialEkonomi.petani')->get()
                ->filter(fn ($item) => $item->sosialEkonomi?->petani)
                ->groupBy(fn ($item) => $item->sosialEkonomi->petani_id)
                ->map(fn ($items) => $items->sum('pendapatan'));

        $penghasilan = [
            'kurang_1' => $pendapatanPerPetani->filter(fn ($value) => $value < 1000000)->count(),
            '1_3' => $pendapatanPerPetani->filter(fn ($value) => $value >= 1000000 && $value <= 3000000)->count(),
            '3_5' => $pendapatanPerPetani->filter(fn ($value) => $value > 3000000 && $value <= 5000000)->count(),
            '5_10' => $pendapatanPerPetani->filter(fn ($value) => $value > 5000000 && $value <= 10000000)->count(),
            'lebih_10' => $pendapatanPerPetani->filter(fn ($value) => $value > 10000000)->count(),
        ];

        $data = [
            'total_petani' => $totalPetani,
            'petani_lakilaki' => $petaniLakilaki,
            'petani_perempuan' => $petaniPerempuan,
            'total_komoditas' => $totalKomoditas,
            'total_luas_lahan' => $totalLuasLahan,
            'ratarata_luas_lahan' => $ratarataLuasLahan,
            'kelompok_umur' => [
                'kurang_30' => $umurKurang30,
                '30_39' => $umur30sampai39,
                '40_49' => $umur40sampai49,
                '50_59' => $umur50sampai59,
                '60_keatas' => $umur60keatas,
            ],
            'pendidikan' => $pendidikan,
            'komoditas_utama' => [
                'ids' => $komoditasUtama
                    ->pluck('id')
                    ->values(),

                'labels' => $komoditasUtama
                    ->pluck('nama')
                    ->values(),

                'series' => $komoditasUtama
                    ->pluck('petani_count')
                    ->map(fn ($value) => (int) $value)
                    ->values(),
            ],
            'luas_lahan' => $luasLahan,
            'penghasilan' => $penghasilan,
        ];

        $daftarPetani = Petani::with([
                'komoditas'
            ])
            ->withSum('lahans as total_luas_lahan', 'luas_lahan')
            ->orderBy('id')
            ->paginate(10);
        // dd($daftarPetani);
        return view('dashboard.demografi-petani', compact('data', 'daftarPetani'));
    }

    public function data(Request $request)
    {
        $query = Petani::with('komoditas')->withSum( 'lahans as total_luas_lahan', 'luas_lahan');

        if ($request->filled('search')) {
            $search = $request->search;
            $query->where('nama', 'ILIKE', "%{$search}%" );
        }

        $pendapatanPerPetani = PendapatanKomoditas::with('sosialEkonomi.petani')->get()
                                ->filter(fn ($item) => $item->sosialEkonomi?->petani)
                                ->groupBy(fn ($item) => $item->sosialEkonomi->petani_id)
                                ->map(fn ($items) => $items->sum('pendapatan'));

        if ($request->has('gender') && $request->gender !== '') {
            $query->where('jenis_kelamin', $request->gender );
        }

        if ($request->filled('umur')) {
            match ($request->umur) {
                'kurang_30' => $query->whereNotNull('tanggal_lahir')
                                ->whereRaw("EXTRACT( YEAR FROM AGE( CURRENT_DATE, tanggal_lahir)) < 30"),
                '30_39'     => $query->whereNotNull('tanggal_lahir')
                                ->whereRaw("EXTRACT(YEAR FROM AGE(CURRENT_DATE, tanggal_lahir)) BETWEEN 30 AND 39"),
                '40_49'     => $query->whereNotNull('tanggal_lahir')
                                ->whereRaw("EXTRACT(YEAR FROM AGE(CURRENT_DATE, tanggal_lahir)) BETWEEN 40 AND 49"),
                '50_59'     => $query->whereNotNull('tanggal_lahir')
                                ->whereRaw("EXTRACT(YEAR FROM AGE(CURRENT_DATE, tanggal_lahir)) BETWEEN 50 AND 59"),
                '60_keatas' => $query ->whereNotNull('tanggal_lahir')
                                ->whereRaw("EXTRACT(YEAR FROM AGE(CURRENT_DATE, tanggal_lahir)) >= 60"),
                default     => null
            };
        }

        if ($request->filled('pendidikan')) {
            $pendidikanMap = [
                'tidak_sekolah' => ['01_tidak_sekolah'],
                'sd'            => ['02_sd'],
                'smp'           => ['03_smp'],
                'sma'           => ['04_sma'],
                'diploma'       => ['05_diploma'],
                's1_keatas'     => ['06_sarjana', '07_magister'],
            ];

            if (isset($pendidikanMap[$request->pendidikan])) {
                $query->whereIn('pendidikan_terakhir', $pendidikanMap[$request->pendidikan]);
            }
        }
  
        if ($request->filled('komoditas')) {
            $query->where('komoditas_id', $request->komoditas);
        }

        if ($request->filled('penghasilan')) {
            $filteredPendapatan =
                match ($request->penghasilan) {
                    'kurang_1'  => $pendapatanPerPetani  ->filter(fn ($value) => $value < 1000000 ),
                    '1_3'       => $pendapatanPerPetani->filter( fn ($value) => $value >= 1000000 && $value <= 3000000 ),
                    '3_5'       => $pendapatanPerPetani->filter(fn ($value) => $value > 3000000 && $value <= 5000000 ),
                    '5_10'      => $pendapatanPerPetani->filter(fn ($value) => $value > 5000000 && $value <= 10000000 ),
                    'lebih_10'  => $pendapatanPerPetani->filter(fn ($value) => $value > 10000000 ),
                    default     => collect()
                };

            $query->whereIn('id', $filteredPendapatan->keys()->values()->all());
        }

        if ($request->filled('luas_lahan')) {
            $lahanQuery = Lahan::query()->select('petani_id')->groupBy('petani_id');
            match ($request->luas_lahan) {
                'kurang_05' => $lahanQuery->havingRaw('SUM(luas_lahan) < 5000' ),
                '05_1'      => $lahanQuery->havingRaw('SUM(luas_lahan) >= 5000 AND SUM(luas_lahan) <= 10000' ),
                '1_2'       => $lahanQuery->havingRaw('SUM(luas_lahan) > 10000 AND SUM(luas_lahan) <= 20000'),
                'lebih_2'   => $lahanQuery->havingRaw('SUM(luas_lahan) > 20000'),
                default     => null
            };
            $query->whereIn('id', $lahanQuery->pluck('petani_id'));
        }

        $daftarPetani = $query->orderBy('id')->paginate(10);

        $pendidikanLabels = [
            '01_tidak_sekolah' => 'Tidak Sekolah',
            '02_sd' => 'SD',
            '03_smp' => 'SMP',
            '04_sma' => 'SMA',
            '05_diploma' => 'Diploma',
            '06_sarjana' => 'Sarjana',
            '07_magister' => 'Magister',
        ];

        $rows = collect($daftarPetani->items())->map(function ($petani) use (
            $pendidikanLabels,
            $pendapatanPerPetani
        ) {
            $umur = $petani->tanggal_lahir ? \Carbon\Carbon::parse($petani->tanggal_lahir)->age : null;
            $pendidikanRaw = $petani->getRawOriginal('pendidikan_terakhir');
            $pendapatan = $pendapatanPerPetani->get($petani->id);

            $rentangPenghasilan = match (true) {
                $pendapatan === null    => '-',
                $pendapatan < 1000000   => '< Rp1 juta',
                $pendapatan <= 3000000  => 'Rp1 - 3 juta',
                $pendapatan <= 5000000  => 'Rp3 - 5 juta',
                $pendapatan <= 10000000 => 'Rp5 - 10 juta',
                default                 => '> Rp10 juta',
            };

            return [
                'id'                    => $petani->kode ?? $petani->id,
                'nama'                  => $petani->nama ?? '-',
                'jenis_kelamin'         => $petani->jenis_kelamin,
                'gender'                => $petani->jenis_kelamin == 1 ? 'Laki-laki' : 'Perempuan',
                'umur'                  => $umur,
                'komoditas'             => $petani->komoditas?->nama ?? '-',
                'luas_lahan'            => (float) ($petani->total_luas_lahan ?? 0 ),
                'pendidikan'            => $pendidikanLabels[$pendidikanRaw ] ?? '-',
                'rentang_penghasilan'   => $rentangPenghasilan,
            ];
        });

        return response()->json([
            'data' => $rows,
            'pagination' => [
                'current_page'  => $daftarPetani->currentPage(),
                'last_page'     => $daftarPetani->lastPage(),
                'per_page'      => $daftarPetani->perPage(),
                'total'         => $daftarPetani->total(),
                'from'          => $daftarPetani->firstItem(),
                'to'            => $daftarPetani->lastItem(),
            ],
        ]);
    }
}