<?php

namespace App\Services;

use App\Models\KegiatanAdaptasi;
use App\Models\KegiatanMitigasi;

class DashboardMitigationService
{
    public function getDashboardData(int $mitigationYear): array
    {
        $rows = KegiatanMitigasi::select([
            'id',
            'tipe_kegiatan',
            'nama_kegiatan',
            'tahun_kegiatan',
            'sektor',
            'sub_sektor',
            'kategori_perhitungan',
            'emission_factor',
            'revisi',
            'alokasi_apbn',
            'alokasi_apbd',
            'alokasi_swasta',
            'alokasi_sumber_dana_lain',
            'realisasi_apbn',
            'realisasi_apbd',
            'realisasi_swasta',
            'realisasi_sumber_dana_lain'
        ])
        ->where('tahun_kegiatan', $mitigationYear)
        ->orderBy('created_at', 'desc')
        ->get();

        $rows = $rows->transform(function ($a) {
            foreach ([
                'alokasi_apbn',
                'alokasi_apbd',
                'alokasi_swasta',
                'alokasi_sumber_dana_lain',
            ] as $field) {
                $raw = $a->{$field} ?? '0';
                $norm = str_replace('.', '', $raw);
                $norm = str_replace(',', '.', $norm);
                $a->{$field} = (float) $norm;
            }

            foreach ([
                'realisasi_apbn',
                'realisasi_apbd',
                'realisasi_swasta',
                'realisasi_sumber_dana_lain'
            ] as $field) {
                $raw = $a->{$field} ?? '0';
                $norm = str_replace('.', '', $raw);
                $norm = str_replace(',', '.', $norm);
                $a->{$field} = (int) round((float) $norm);
            }

            if (!empty($a->emission_factor)) {
                $raw = $a->emission_factor;
                $norm = str_replace('.', '', $raw);  // hapus ribuan
                $norm = str_replace(',', '.', $norm); // ubah koma ke titik
                $a->emission_factor = (float) $norm;
            } else {
                $a->emission_factor = 0;
            }

            return $a;
        });

        $totalAksi = $rows->count();

        // --- JUMLAH DATA PER SEKTOR DI TAHUN TERTENTU ---
        $years = $rows->pluck('tahun_kegiatan')->unique()->sort()->values();

        $barData = $years->map(fn($year) => [
            'year' => $year,
            'jumlah' => $rows
                ->where('tahun_kegiatan', $year)
                ->groupBy('sektor')
                ->map(fn($group, $sector) => $group->count())
                ->toArray(),
        ])->all();

        // Budget data (tetap sesuai kebutuhan chart anggaran)
        $budgetData = [
            'apbn'     => (float) $rows->sum('alokasi_apbn'),
            'apbd'     => (float) $rows->sum('alokasi_apbd'),
            'swasta'   => (float) $rows->sum('alokasi_swasta'),
            'lainlain' => (float) $rows->sum('alokasi_sumber_dana_lain'),
        ];

        $realisasiData = [
            'apbn'     => (float) $rows->sum('realisasi_apbn'),
            'apbd'     => (float) $rows->sum('realisasi_apbd'),
            'swasta'   => (float) $rows->sum('realisasi_swasta'),
            'lainlain' => (float) $rows->sum('realisasi_sumber_dana_lain'),
        ];

        $stats = [
            'total_aksi'     => $totalAksi,
            'total_emisi'    => (float) $rows->sum('emission_factor'),
            'total_anggaran' => array_sum($budgetData),
            'total_alokasi'  => array_sum($realisasiData)
        ];

        // dd($stats);

        $sectorBreakdown = $rows
            ->groupBy('sektor')
            ->map(function($group, $sector) use ($totalAksi) {
                $jumlah = $group->count();
                $persen = $totalAksi > 0 ? round(($jumlah / $totalAksi) * 100, 2) : 0;
                return [
                    'sektor' => $sector,
                    'jumlah' => $jumlah,
                    'persen' => $persen,
                ];
            })
            ->values()
            ->all();

        $charts = [
            'aksi' => $sectorBreakdown,
            'emisi' => $rows->groupBy('sektor')->map(function($g, $s) use ($rows) {
                $total = $rows->sum('emission_factor');
                $val   = $g->sum('emission_factor');
                $persen = $total > 0 ? round(($val / $total) * 100, 2) : 0;
                return [
                    'sektor' => $s,
                    'persen' => $persen,
                ];
            })->values()->all(),
            'anggaran' => $rows->groupBy('sektor')->map(function($g, $s) use ($budgetData) {
                $total = array_sum($budgetData);
                $val   = $g->sum('alokasi_apbn') + $g->sum('alokasi_apbd') + $g->sum('alokasi_swasta') + $g->sum('alokasi_sumber_dana_lain');
                $persen = $total > 0 ? round(($val / $total) * 100, 2) : 0;
                return [
                    'sektor' => $s,
                    'persen' => $persen,
                ];
            })->values()->all(),
            'alokasi' => $rows->groupBy('sektor')->map(function($g, $s) use ($realisasiData) {
                $total = array_sum($realisasiData);
                $val   = $g->sum('realisasi_apbn') + $g->sum('realisasi_apbd') + $g->sum('realisasi_swasta') + $g->sum('realisasi_sumber_dana_lain');
                $persen = $total > 0 ? round(($val / $total) * 100, 2) : 0;
                return [
                    'sektor' => $s,
                    'persen' => $persen,
                ];
            })->values()->all(),
        ];

        return [
            'mitigationYear' => $mitigationYear,
            'tableData'      => $rows,
            'barData'        => $barData,
            'budgetData'     => $budgetData,
            'realisasiData'  => $realisasiData,
            'stats'          => $stats,
            'charts'         => $charts
        ];
    }
}