<?php

namespace App\Http\Controllers;

use App\Models\Song;
use App\Models\SongArrangement;
use Barryvdh\DomPDF\Facade\Pdf;
use Illuminate\Http\Response;

class SongPdfController extends Controller
{
    public function download(Song $song, SongArrangement $arrangement): Response
    {
        abort_unless($arrangement->song_id === $song->id, 404);

        $arrangement->load([
            'arrangementGroups' => fn ($query) => $query->orderBy('order'),
            'arrangementGroups.group.slides' => fn ($query) => $query->orderBy('order'),
        ]);

        $groupsInOrder = $arrangement->arrangementGroups->map(function ($arrangementGroup) {
            $group = $arrangementGroup->group;

            return [
                'name' => $group->name,
                'color' => $group->color ?? '#6b7280',
                'slides' => $group->slides->map(fn ($slide) => [
                    'text_content' => $slide->text_content,
                    'text_content_translated' => $slide->text_content_translated,
                ])->values()->all(),
            ];
        });

        $pdf = Pdf::loadView('pdf.song', [
            'song' => $song,
            'arrangement' => $arrangement,
            'groupsInOrder' => $groupsInOrder,
        ]);

        $filename = str($song->title)->slug() . '-' . str($arrangement->name)->slug() . '.pdf';

        return $pdf->download($filename);
    }
}