<?php

namespace App\Exports;

use App\Models\Treatment;
use Maatwebsite\Excel\Concerns\FromQuery;
use Maatwebsite\Excel\Concerns\WithHeadings;
use Maatwebsite\Excel\Concerns\WithMapping;
use Maatwebsite\Excel\Concerns\WithStyles;
use Maatwebsite\Excel\Concerns\ShouldAutoSize;
use Maatwebsite\Excel\Concerns\WithColumnFormatting;
use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
use PhpOffice\PhpSpreadsheet\Style\NumberFormat;

class TreatmentExport implements FromQuery, WithHeadings, WithMapping, WithStyles, ShouldAutoSize
{
    protected $request;

    public function __construct($request)
    {
        // Kita bisa menerima objek Request atau Query Builder hasil clone dari Controller
        $this->request = $request;
    }

    /**
     * Query data dengan filter yang sinkron dengan tampilan UI
     */
    public function query()
    {
        $query = Treatment::query()->with(['cat', 'user', 'details.medicine']);

        // Filter 1: Pencarian Nama Kucing
        if ($this->request->filled('search')) {
            $query->whereHas('cat', function($q) {
                $q->where('nama_kucing', 'like', '%' . $this->request->search . '%');
            });
        }

        // Filter 2: Nama PIC (Staf)
        if ($this->request->filled('pic_id')) {
            $query->where('user_id', $this->request->pic_id);
        }

        // Filter 3: Rentang Tanggal
        if ($this->request->filled('start_date') && $this->request->filled('end_date')) {
            $query->whereBetween('tanggal', [$this->request->start_date, $this->request->end_date]);
        }

        // Filter 4: Kondisi (Healthy / Under Treatment)
        if ($this->request->filled('status')) {
            $query->whereHas('cat', function($q) {
                $q->where('treatment_status', $this->request->status);
            });
        }

        return $query->latest('tanggal');
    }

    /**
     * Header Tabel Excel
     */
    public function headings(): array
    {
        return [
            "TANGGAL",
            "NAMA KUCING",
            "STATUS KESEHATAN",
            "KELUHAN",
            "DIAGNOSA & TINDAKAN",
            "DAFTAR OBAT (QTY)",
            "DOSIS & KET",
            "PIC / STAF"
        ];
    }

    /**
     * Transformasi Data per Baris
     */
    public function map($t): array
    {
        // Menggabungkan daftar obat menjadi satu string jika ada multi-medicine
        $medicineList = $t->details->map(function($d) {
            $namaObat = $d->medicine->nama_obat ?? 'Obat Terhapus';
            return "{$namaObat} ({$d->qty_used})";
        })->implode(", ");

        // Jika data detail kosong, gunakan data fallback (legacy support)
        if ($medicineList === "") {
            $medicineList = $t->nama_obat ? "{$t->nama_obat} ({$t->qty_used})" : "-";
        }

        // Mengambil deskripsi dosis/keterangan dari detail pertama atau header
        $dosisKet = $t->details->map(function($d) {
            return "{$d->dosis} [{$d->keterangan}]";
        })->implode(" | ");

        return [
            $t->tanggal->format('d/m/Y'),
            $t->cat->nama_kucing ?? 'N/A',
            ($t->cat->treatment_status == 1) ? 'UNDER TREATMENT' : 'HEALTHY',
            $t->keluhan,
            $t->diagnosa,
            $medicineList,
            $dosisKet ?: $t->dosis,
            $t->user->name ?? 'System'
        ];
    }

    /**
     * Memberikan Styling pada file Excel
     */
    public function styles(Worksheet $sheet)
    {
        return [
            // Style Header (Baris 1)
            1 => [
                'font' => [
                    'bold' => true, 
                    'color' => ['rgb' => 'FFFFFF'],
                    'size' => 11
                ],
                'fill' => [
                    'fillType' => \PhpOffice\PhpSpreadsheet\Style\Fill::FILL_SOLID,
                    'startColor' => ['rgb' => '4F46E5'] // Indigo-600
                ],
                'alignment' => [
                    'horizontal' => \PhpOffice\PhpSpreadsheet\Style\Alignment::HORIZONTAL_CENTER,
                ],
            ],
            
            // Memberikan border ke seluruh data yang ada
            'A1:H' . ($sheet->getHighestRow()) => [
                'borders' => [
                    'allBorders' => [
                        'borderStyle' => \PhpOffice\PhpSpreadsheet\Style\Border::BORDER_THIN,
                        'color' => ['rgb' => 'E2E8F0'], // Slate-200
                    ],
                ],
            ],
        ];
    }
}