<?php

namespace App\Http\Controllers;

use App\Models\DrawResult;
use App\Models\Member;
use App\Models\Prize;
use App\Support\Spreadsheet;
use Barryvdh\DomPDF\Facade\Pdf;
use Illuminate\Http\Request;
use Illuminate\View\View;
use Symfony\Component\HttpFoundation\Response;

class ReportController extends Controller
{
    public function index(): View
    {
        $winners = DrawResult::with(['member', 'prize', 'confirmedBy'])
            ->where('status', DrawResult::STATUS_CONFIRMED)
            ->get()
            ->sortBy(fn ($r) => $r->prize->draw_order)
            ->values();

        $cancelled = DrawResult::with(['member', 'prize', 'cancelledBy'])
            ->where('status', DrawResult::STATUS_CANCELLED)
            ->latest('cancelled_at')
            ->get();

        $undrawn = Prize::available()->ordered()->get();

        return view('reports.index', compact('winners', 'cancelled', 'undrawn'));
    }

    public function export(Request $request, string $type): Response
    {
        $format = $request->query('format', 'xlsx'); // xlsx | pdf

        return match ($type) {
            'attendance' => $this->exportAttendance($format),
            'winners' => $this->exportWinners($format),
            'undrawn' => $this->exportUndrawn($format),
            'cancelled' => $this->exportCancelled($format),
            default => abort(404),
        };
    }

    private function exportAttendance(string $format): Response
    {
        $members = Member::hadir()->with('attendance')->orderBy('nama')->get();
        $headings = ['Bil', 'No Anggota', 'No Pekerja', 'Nama', 'Jabatan', 'Bahagian', 'Masa Hadir'];
        $rows = $members->values()->map(fn ($m, $i) => [
            $i + 1, $m->no_anggota, $m->no_pekerja, $m->nama, $m->jabatan, $m->bahagian,
            $m->attendance?->attended_at?->format('d/m/Y H:i:s'),
        ]);

        return $this->respond('senarai-kehadiran', 'Senarai Kehadiran MAT KOIPB', $headings, $rows, $format);
    }

    private function exportWinners(string $format): Response
    {
        $winners = DrawResult::with(['member', 'prize'])
            ->where('status', DrawResult::STATUS_CONFIRMED)
            ->get()->sortBy(fn ($r) => $r->prize->draw_order)->values();

        $headings = ['Susunan', 'Hadiah', 'Nama Pemenang', 'No Pekerja', 'Jabatan', 'Masa Disahkan'];
        $rows = $winners->map(fn ($r) => [
            $r->prize->draw_order, $r->prize->nama_hadiah, $r->member->nama,
            $r->member->no_pekerja, $r->member->jabatan,
            $r->confirmed_at?->format('d/m/Y H:i:s'),
        ]);

        return $this->respond('senarai-pemenang', 'Senarai Pemenang Cabutan Bertuah', $headings, $rows, $format);
    }

    private function exportUndrawn(string $format): Response
    {
        $prizes = Prize::available()->ordered()->get();
        $headings = ['Susunan', 'Kod', 'Hadiah', 'Kategori', 'Status'];
        $rows = $prizes->map(fn ($p) => [
            $p->draw_order, $p->kod_hadiah, $p->nama_hadiah, $p->kategori, $p->statusLabel(),
        ]);

        return $this->respond('hadiah-belum-dicabut', 'Hadiah Belum Dicabut', $headings, $rows, $format);
    }

    private function exportCancelled(string $format): Response
    {
        $cancelled = DrawResult::with(['member', 'prize'])
            ->where('status', DrawResult::STATUS_CANCELLED)
            ->latest('cancelled_at')->get();

        $headings = ['Hadiah', 'Nama', 'No Pekerja', 'Sebab Batal', 'Cubaan', 'Masa Batal'];
        $rows = $cancelled->map(fn ($r) => [
            $r->prize->nama_hadiah, $r->member->nama, $r->member->no_pekerja,
            $r->sebab_batal, $r->attempt_number, $r->cancelled_at?->format('d/m/Y H:i:s'),
        ]);

        return $this->respond('cabutan-dibatalkan', 'Cabutan Dibatalkan', $headings, $rows, $format);
    }

    private function respond(string $slug, string $title, array $headings, $rows, string $format): Response
    {
        if ($format === 'pdf') {
            $pdf = Pdf::loadView('reports.pdf', [
                'title' => $title,
                'headings' => $headings,
                'rows' => $rows,
            ])->setPaper('a4', 'landscape');

            return $pdf->download($slug . '-' . date('Ymd-His') . '.pdf');
        }

        return Spreadsheet::download(
            $slug . '-' . date('Ymd-His') . '.xlsx',
            $headings,
            $rows->map(fn ($r) => array_values((array) $r))->all(),
        );
    }
}