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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Drupal\name\Utility; |
| 6 | |
| 7 | use Drupal\Core\Field\FieldDefinitionInterface; |
| 8 | |
| 9 | /** |
| 10 | * Builds autocomplete plans and parses user input for name fields. |
| 11 | * |
| 12 | * @internal |
| 13 | */ |
| 14 | final class AutocompletePlanBuilder { |
| 15 | |
| 16 | /** |
| 17 | * Name field components. |
| 18 | * |
| 19 | * @var list<string> |
| 20 | */ |
| 21 | private const ALL_COMPONENTS = [ |
| 22 | 'given', |
| 23 | 'middle', |
| 24 | 'family', |
| 25 | 'title', |
| 26 | 'credentials', |
| 27 | 'generational', |
| 28 | ]; |
| 29 | |
| 30 | /** |
| 31 | * Builds match context from field settings, target, and user input. |
| 32 | * |
| 33 | * @param \Drupal\Core\Field\FieldDefinitionInterface $field |
| 34 | * The field definition. |
| 35 | * @param string $target |
| 36 | * The autocomplete target identifier. |
| 37 | * @param string $string |
| 38 | * The raw user input string. |
| 39 | * @param callable(string, string): (list<string>|false)|null $split_pieces |
| 40 | * Callable that splits input; defaults to preg_split(). |
| 41 | * |
| 42 | * @return array{ |
| 43 | * settings: array<string, mixed>, |
| 44 | * plan: array{ |
| 45 | * components: array<string, string>, |
| 46 | * source: array{ |
| 47 | * title: array<int, string>, |
| 48 | * generational: array<int, string>, |
| 49 | * data: array<int, string> |
| 50 | * }, |
| 51 | * separator: string |
| 52 | * }, |
| 53 | * base_string: string, |
| 54 | * test_string: string |
| 55 | * }|null |
| 56 | * Context for match collection, or NULL when no matches are possible. |
| 57 | */ |
| 58 | public static function buildMatchContext(FieldDefinitionInterface $field, string $target, string $string, ?callable $split_pieces = NULL): ?array { |
| 59 | if ($string === '') { |
| 60 | return NULL; |
| 61 | } |
| 62 | |
| 63 | $settings = self::normalizeAutocompleteSettings($field->getSettings()); |
| 64 | $plan = self::buildAutocompletePlan( |
| 65 | $settings, |
| 66 | self::resolveTargetComponents($target), |
| 67 | ); |
| 68 | $input = self::splitAutocompleteInput($string, $plan['separator'], $split_pieces); |
| 69 | |
| 70 | $input_missing = $input === NULL; |
| 71 | $components_empty = empty($plan['components']); |
| 72 | $context_invalid = $input_missing || $components_empty; |
| 73 | if ($context_invalid) { |
| 74 | return NULL; |
| 75 | } |
| 76 | |
| 77 | return [ |
| 78 | 'settings' => $settings, |
| 79 | 'plan' => $plan, |
| 80 | 'base_string' => $input['base'], |
| 81 | 'test_string' => $input['test'], |
| 82 | ]; |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * Normalizes the required autocomplete settings for all components. |
| 87 | * |
| 88 | * @param array<string, mixed> $settings |
| 89 | * The field settings. |
| 90 | * |
| 91 | * @return array<string, mixed> |
| 92 | * The settings with normalized autocomplete source keys. |
| 93 | */ |
| 94 | public static function normalizeAutocompleteSettings(array $settings): array { |
| 95 | foreach (self::ALL_COMPONENTS as $component) { |
| 96 | if (!isset($settings['autocomplete_source'][$component])) { |
| 97 | $settings['autocomplete_source'][$component] = []; |
| 98 | } |
| 99 | $settings['autocomplete_source'][$component] = array_filter($settings['autocomplete_source'][$component]); |
| 100 | } |
| 101 | return $settings; |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Resolves an autocomplete target into an associative component map. |
| 106 | * |
| 107 | * @return array<string, string> |
| 108 | * A map keyed by component machine name. |
| 109 | */ |
| 110 | public static function resolveTargetComponents(string $target): array { |
| 111 | return match ($target) { |
| 112 | 'name' => self::mapAssoc(['given', 'middle', 'family']), |
| 113 | 'name-all' => self::mapAssoc(self::ALL_COMPONENTS), |
| 114 | 'title', 'given', 'middle', 'family', 'credentials', 'generational' => [$target => $target], |
| 115 | default => self::resolveCompositeTargetComponents($target), |
| 116 | }; |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * Resolves a hyphen-delimited target into valid core components. |
| 121 | * |
| 122 | * @return array<string, string> |
| 123 | * A map keyed by component machine name. |
| 124 | */ |
| 125 | public static function resolveCompositeTargetComponents(string $target): array { |
| 126 | $components = []; |
| 127 | $target_components = explode('-', $target); |
| 128 | foreach ($target_components as $component) { |
| 129 | if (array_key_exists($component, NameComponents::coreKeys())) { |
| 130 | $components[$component] = $component; |
| 131 | } |
| 132 | } |
| 133 | return $components; |
| 134 | } |
| 135 | |
| 136 | /** |
| 137 | * Builds the executable autocomplete plan for component and source lookups. |
| 138 | * |
| 139 | * @param array<string, mixed> $settings |
| 140 | * Normalized field settings. |
| 141 | * @param array<string, string> $components |
| 142 | * Requested components keyed by component name. |
| 143 | * |
| 144 | * @return array{ |
| 145 | * components: array<string, string>, |
| 146 | * source: array{ |
| 147 | * title: array<int, string>, |
| 148 | * generational: array<int, string>, |
| 149 | * data: array<int, string> |
| 150 | * }, |
| 151 | * separator: string |
| 152 | * } |
| 153 | * The actionable plan for source resolution and input splitting. |
| 154 | */ |
| 155 | public static function buildAutocompletePlan(array $settings, array $components): array { |
| 156 | $plan = [ |
| 157 | 'components' => $components, |
| 158 | 'source' => [ |
| 159 | 'title' => [], |
| 160 | 'generational' => [], |
| 161 | 'data' => [], |
| 162 | ], |
| 163 | 'separator' => '', |
| 164 | ]; |
| 165 | |
| 166 | foreach ($plan['components'] as $component) { |
| 167 | if (empty($settings['autocomplete_source'][$component])) { |
| 168 | unset($plan['components'][$component]); |
| 169 | continue; |
| 170 | } |
| 171 | |
| 172 | $plan['separator'] = self::appendSeparatorCharacters( |
| 173 | $plan['separator'], |
| 174 | (string) ($settings['autocomplete_separator'][$component] ?? ''), |
| 175 | ); |
| 176 | $found_source = FALSE; |
| 177 | |
| 178 | foreach ((array) $settings['autocomplete_source'][$component] as $source) { |
| 179 | $label_source = $source === 'title' || $source === 'generational'; |
| 180 | $comp_mismatch = $component !== $source; |
| 181 | $skip_source = $label_source && $comp_mismatch; |
| 182 | if ($skip_source) { |
| 183 | continue; |
| 184 | } |
| 185 | if (!array_key_exists($source, $plan['source'])) { |
| 186 | continue; |
| 187 | } |
| 188 | $found_source = TRUE; |
| 189 | $plan['source'][$source][] = $component; |
| 190 | } |
| 191 | |
| 192 | if (!$found_source) { |
| 193 | unset($plan['components'][$component]); |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | return $plan; |
| 198 | } |
| 199 | |
| 200 | /** |
| 201 | * Adds unique separator characters from one component into the set. |
| 202 | */ |
| 203 | public static function appendSeparatorCharacters(string $separator, string $component_separator): string { |
| 204 | if ($component_separator === '') { |
| 205 | $component_separator = ' '; |
| 206 | } |
| 207 | |
| 208 | for ($i = 0; $i < strlen($component_separator); $i += 1) { |
| 209 | if (strpos($separator, $component_separator[$i]) === FALSE) { |
| 210 | $separator .= $component_separator[$i]; |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | return $separator; |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * Splits autocomplete input into base prefix and searchable token. |
| 219 | * |
| 220 | * @param string $string |
| 221 | * The raw autocomplete input string. |
| 222 | * @param string $separator |
| 223 | * The separator character set. |
| 224 | * @param callable(string, string): (list<string>|false)|null $split_pieces |
| 225 | * Callable that splits input; defaults to preg_split(). |
| 226 | * |
| 227 | * @return array{base: string, test: string}|null |
| 228 | * The parsed input parts, or NULL when no usable split can be performed. |
| 229 | */ |
| 230 | public static function splitAutocompleteInput(string $string, string $separator, ?callable $split_pieces = NULL): ?array { |
| 231 | if ($separator === '') { |
| 232 | return NULL; |
| 233 | } |
| 234 | |
| 235 | $split = $split_pieces ?? static fn (string $pattern, string $subject): array|false => \preg_split($pattern, $subject); |
| 236 | $pieces = $split( |
| 237 | '/[' . \preg_quote($separator, '/') . ']+/', |
| 238 | $string, |
| 239 | ); |
| 240 | if (empty($pieces)) { |
| 241 | return NULL; |
| 242 | } |
| 243 | |
| 244 | $test_string = mb_strtolower((string) array_pop($pieces)); |
| 245 | if ($test_string === '') { |
| 246 | return NULL; |
| 247 | } |
| 248 | |
| 249 | return [ |
| 250 | 'base' => mb_substr($string, 0, mb_strlen($string) - mb_strlen($test_string)), |
| 251 | 'test' => $test_string, |
| 252 | ]; |
| 253 | } |
| 254 | |
| 255 | /** |
| 256 | * Combines array values into an associative array keyed by value. |
| 257 | * |
| 258 | * @param array<int, string> $values |
| 259 | * Values to combine. |
| 260 | * |
| 261 | * @return array<string, string> |
| 262 | * Combined values. |
| 263 | */ |
| 264 | private static function mapAssoc(array $values): array { |
| 265 | return array_combine($values, $values); |
| 266 | } |
| 267 | |
| 268 | } |