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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Cosray\Title; |
| 6 | |
| 7 | use Cosray\Contract\Title as TitleContract; |
| 8 | use Cosray\Field\Definitions; |
| 9 | use Cosray\Field\Field; |
| 10 | use Cosray\Field\Text; |
| 11 | use Cosray\Locale; |
| 12 | use Cosray\Locales; |
| 13 | use Cosray\Node\Factory; |
| 14 | use Cosray\Node\Types; |
| 15 | |
| 16 | /** |
| 17 | * Resolves runtime and materialized titles from one shared descriptor. |
| 18 | * |
| 19 | * @phpstan-type TitleDescriptor = array{kind: 'field', field: string} |
| 20 | * |array{kind: 'dynamic', embedded?: string} |
| 21 | * |array{kind: 'none'} |
| 22 | */ |
| 23 | class Resolver |
| 24 | { |
| 25 | public const string KIND_DYNAMIC = 'dynamic'; |
| 26 | public const string KIND_FIELD = 'field'; |
| 27 | public const string KIND_NONE = 'none'; |
| 28 | |
| 29 | public function __construct( |
| 30 | private readonly Types $types, |
| 31 | ) {} |
| 32 | |
| 33 | /** |
| 34 | * @param class-string $class |
| 35 | * @return TitleDescriptor |
| 36 | */ |
| 37 | public function descriptor(string $class): array |
| 38 | { |
| 39 | if (is_a($class, TitleContract::class, true)) { |
| 40 | return ['kind' => self::KIND_DYNAMIC]; |
| 41 | } |
| 42 | |
| 43 | $titleEmbedded = $this->types->get($class, 'titleEmbedded'); |
| 44 | |
| 45 | if (is_string($titleEmbedded) && $titleEmbedded !== '') { |
| 46 | return ['kind' => self::KIND_DYNAMIC, 'embedded' => $titleEmbedded]; |
| 47 | } |
| 48 | |
| 49 | $titleField = $this->types->get($class, 'titleField'); |
| 50 | |
| 51 | if (is_string($titleField) && $titleField !== '' && $this->isTextField($class, $titleField)) { |
| 52 | return ['kind' => self::KIND_FIELD, 'field' => $titleField]; |
| 53 | } |
| 54 | |
| 55 | if ($this->isTextField($class, 'title')) { |
| 56 | return ['kind' => self::KIND_FIELD, 'field' => 'title']; |
| 57 | } |
| 58 | |
| 59 | return ['kind' => self::KIND_NONE]; |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * The writable Text field behind the title: the descriptor's field for |
| 64 | * a field-kind title, or the conventional `title` field for a dynamic |
| 65 | * one — the common `implements Title` idiom computes over exactly that |
| 66 | * field. Null when neither exists. |
| 67 | * |
| 68 | * @param class-string $class |
| 69 | */ |
| 70 | public function writableField(string $class): ?string |
| 71 | { |
| 72 | $descriptor = $this->descriptor($class); |
| 73 | |
| 74 | if ($descriptor['kind'] === self::KIND_FIELD) { |
| 75 | return $descriptor['field']; |
| 76 | } |
| 77 | |
| 78 | return $this->isTextField($class, 'title') ? 'title' : null; |
| 79 | } |
| 80 | |
| 81 | public function resolve(object $node): string |
| 82 | { |
| 83 | $descriptor = $this->descriptor($node::class); |
| 84 | |
| 85 | if ($descriptor['kind'] === self::KIND_FIELD) { |
| 86 | $field = Factory::fieldFor($node, $descriptor['field']); |
| 87 | |
| 88 | return $field instanceof Text ? $field->value()->raw() : ''; |
| 89 | } |
| 90 | |
| 91 | return $this->provider($node, $descriptor)?->title() ?? ''; |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * Pick the title for a locale out of a materialized title map, walking the |
| 96 | * locale fallback chain and then the neutral key. Mirrors how a translated |
| 97 | * field value resolves in {@see \Cosray\Value\Value::effective()}. |
| 98 | * |
| 99 | * Null when the map holds nothing usable for that chain, which is the |
| 100 | * caller's signal to fall back to live resolution. |
| 101 | * |
| 102 | * @param array<string, mixed> $map |
| 103 | */ |
| 104 | public function stored(array $map, ?Locale $locale): ?string |
| 105 | { |
| 106 | foreach ($locale === null ? [] : [$locale->id, ...$locale->fallbacks()] as $id) { |
| 107 | $title = $this->text($map, $id); |
| 108 | |
| 109 | if ($title !== null) { |
| 110 | return $title; |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | return $this->text($map, Field::NEUTRAL_LOCALE); |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * @param ?TitleDescriptor $descriptor |
| 119 | */ |
| 120 | public function provider(object $node, ?array $descriptor = null): ?TitleContract |
| 121 | { |
| 122 | $descriptor ??= $this->descriptor($node::class); |
| 123 | |
| 124 | if ($descriptor['kind'] !== self::KIND_DYNAMIC) { |
| 125 | return null; |
| 126 | } |
| 127 | |
| 128 | if (isset($descriptor['embedded'])) { |
| 129 | $embedded = Factory::embeddedFor($node, $descriptor['embedded']); |
| 130 | |
| 131 | return $embedded instanceof TitleContract ? $embedded : null; |
| 132 | } |
| 133 | |
| 134 | return $node instanceof TitleContract ? $node : null; |
| 135 | } |
| 136 | |
| 137 | /** |
| 138 | * Extract the localized title map from stored content for a field-based title. |
| 139 | * |
| 140 | * @param array<string, mixed> $content |
| 141 | * @return array<string, string> |
| 142 | */ |
| 143 | public function fieldMap(array $content, string $field): array |
| 144 | { |
| 145 | $value = $content[$field]['value'] ?? null; |
| 146 | |
| 147 | if (!is_array($value)) { |
| 148 | return []; |
| 149 | } |
| 150 | |
| 151 | $map = []; |
| 152 | |
| 153 | foreach ($value as $locale => $text) { |
| 154 | if (!is_string($locale) || !is_string($text)) { |
| 155 | continue; |
| 156 | } |
| 157 | |
| 158 | $text = trim($text); |
| 159 | |
| 160 | if ($text !== '') { |
| 161 | $map[$locale] = $text; |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | return $map; |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | * @param callable(Locale): string $titleFor |
| 170 | * @return array<string, string> |
| 171 | */ |
| 172 | public function dynamicMap(callable $titleFor, Locales $locales): array |
| 173 | { |
| 174 | $map = []; |
| 175 | $count = 0; |
| 176 | |
| 177 | foreach ($locales as $locale) { |
| 178 | $count++; |
| 179 | $text = trim($titleFor($locale)); |
| 180 | |
| 181 | if ($text !== '') { |
| 182 | $map[$locale->id] = $text; |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | if (count($map) === $count && count(array_unique($map)) === 1) { |
| 187 | return [Field::NEUTRAL_LOCALE => (string) reset($map)]; |
| 188 | } |
| 189 | |
| 190 | return $map; |
| 191 | } |
| 192 | |
| 193 | /** @param array<string, mixed> $map */ |
| 194 | private function text(array $map, string $key): ?string |
| 195 | { |
| 196 | $title = $map[$key] ?? null; |
| 197 | |
| 198 | return is_string($title) && trim($title) !== '' ? $title : null; |
| 199 | } |
| 200 | |
| 201 | /** @param class-string $class */ |
| 202 | private function isTextField(string $class, string $property): bool |
| 203 | { |
| 204 | $definition = Definitions::for($class)->field($property); |
| 205 | |
| 206 | return $definition !== null && is_a($definition->type, Text::class, true); |
| 207 | } |
| 208 | } |