<?php

namespace App\Support;

use App\Models\MusicProduction;
use Illuminate\Contracts\Pagination\LengthAwarePaginator;
use Illuminate\Support\Str;

class MusicProductionStructuredData
{
    public static function forIndex(LengthAwarePaginator $productions, string $pageUrl): array
    {
        $siteName = setting('site_name', config('app.name'));
        $siteUrl = url('/');
        $pageName = __('music_productions.meta-index-title');
        $pageDescription = __('music_productions.meta-index-description');

        $itemListElements = [];
        $offset = ($productions->currentPage() - 1) * $productions->perPage();

        foreach ($productions as $index => $production) {
            $itemListElements[] = [
                '@type' => 'ListItem',
                'position' => $offset + $index + 1,
                'item' => self::productionSchema($production),
            ];
        }

        $graph = [
            self::websiteNode($siteUrl, $siteName),
            self::organizationNode($siteUrl, $siteName),
            [
                '@type' => 'CollectionPage',
                '@id' => $pageUrl . '#webpage',
                'url' => $pageUrl,
                'name' => $pageName,
                'description' => $pageDescription,
                'inLanguage' => app()->getLocale(),
                'isPartOf' => ['@id' => $siteUrl . '#website'],
                'breadcrumb' => ['@id' => $pageUrl . '#breadcrumb'],
                'mainEntity' => ['@id' => $pageUrl . '#itemlist'],
            ],
            [
                '@type' => 'BreadcrumbList',
                '@id' => $pageUrl . '#breadcrumb',
                'itemListElement' => [
                    [
                        '@type' => 'ListItem',
                        'position' => 1,
                        'name' => __('music_productions.breadcrumb_home'),
                        'item' => $siteUrl,
                    ],
                    [
                        '@type' => 'ListItem',
                        'position' => 2,
                        'name' => __('music_productions.nav-music-productions'),
                        'item' => route('music-productions.index'),
                    ],
                ],
            ],
            [
                '@type' => 'ItemList',
                '@id' => $pageUrl . '#itemlist',
                'name' => $pageName,
                'numberOfItems' => $productions->total(),
                'itemListElement' => $itemListElements,
            ],
        ];

        return [
            '@context' => 'https://schema.org',
            '@graph' => $graph,
        ];
    }

    public static function forShow(MusicProduction $production, string $pageUrl): array
    {
        $siteName = setting('site_name', config('app.name'));
        $siteUrl = url('/');
        $title = $production->translate('title');
        $description = Str::limit(strip_tags((string) $production->translate('content')), 160);

        $graph = [
            self::websiteNode($siteUrl, $siteName),
            self::organizationNode($siteUrl, $siteName),
            [
                '@type' => 'BreadcrumbList',
                '@id' => $pageUrl . '#breadcrumb',
                'itemListElement' => [
                    [
                        '@type' => 'ListItem',
                        'position' => 1,
                        'name' => __('music_productions.breadcrumb_home'),
                        'item' => $siteUrl,
                    ],
                    [
                        '@type' => 'ListItem',
                        'position' => 2,
                        'name' => __('music_productions.nav-music-productions'),
                        'item' => route('music-productions.index'),
                    ],
                    [
                        '@type' => 'ListItem',
                        'position' => 3,
                        'name' => $title,
                        'item' => $pageUrl,
                    ],
                ],
            ],
            array_merge(
                [
                    '@type' => 'WebPage',
                    '@id' => $pageUrl . '#webpage',
                    'url' => $pageUrl,
                    'name' => $title,
                    'description' => $description,
                    'inLanguage' => app()->getLocale(),
                    'isPartOf' => ['@id' => $siteUrl . '#website'],
                    'breadcrumb' => ['@id' => $pageUrl . '#breadcrumb'],
                    'mainEntity' => ['@id' => $pageUrl . '#production'],
                ],
                $production->updated_at ? ['dateModified' => $production->updated_at->toIso8601String()] : [],
            ),
            array_merge(
                ['@id' => $pageUrl . '#production'],
                self::productionSchema($production),
            ),
        ];

        return [
            '@context' => 'https://schema.org',
            '@graph' => $graph,
        ];
    }

    /**
     * @return array<string, mixed>
     */
    protected static function productionSchema(MusicProduction $production): array
    {
        $schema = [
            '@type' => filled($production->spotify_album_id) ? 'MusicAlbum' : 'CreativeWork',
            'name' => $production->translate('title'),
            'url' => route('music-productions.show', $production->slug),
        ];

        if ($production->cover_image_url) {
            $schema['image'] = $production->cover_image_url;
        }

        $content = strip_tags((string) $production->translate('content'));
        if ($content !== '') {
            $schema['description'] = Str::limit($content, 300);
        }

        if ($production->production_date) {
            $schema['datePublished'] = $production->production_date->toIso8601String();
        }

        $clientName = $production->translate('client_name');
        if ($clientName) {
            $schema['creator'] = [
                '@type' => 'Organization',
                'name' => $clientName,
            ];
        }

        $sameAs = array_values(array_filter([
            $production->spotify_url,
            $production->youtube_url,
        ]));

        if ($sameAs !== []) {
            $schema['sameAs'] = $sameAs;
        }

        return $schema;
    }

    /**
     * @return array<string, mixed>
     */
    protected static function websiteNode(string $siteUrl, string $siteName): array
    {
        return [
            '@type' => 'WebSite',
            '@id' => $siteUrl . '#website',
            'url' => $siteUrl,
            'name' => $siteName,
            'publisher' => ['@id' => $siteUrl . '#organization'],
            'potentialAction' => [
                '@type' => 'SearchAction',
                'target' => [
                    '@type' => 'EntryPoint',
                    'urlTemplate' => route('music-productions.index') . '?q={search_term_string}',
                ],
                'query-input' => 'required name=search_term_string',
            ],
        ];
    }

    /**
     * @return array<string, mixed>
     */
    protected static function organizationNode(string $siteUrl, string $siteName): array
    {
        $node = [
            '@type' => 'Organization',
            '@id' => $siteUrl . '#organization',
            'name' => $siteName,
            'url' => $siteUrl,
        ];

        $logo = setting('site_logo');
        if ($logo) {
            $logoUrl = str_starts_with($logo, 'http') ? $logo : asset('storage/' . ltrim($logo, '/'));
            $node['logo'] = [
                '@type' => 'ImageObject',
                'url' => $logoUrl,
            ];
        }

        return $node;
    }
}