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| 1 | +<?php |
| 2 | +/* |
| 3 | + * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony). |
| 4 | + * |
| 5 | + * Copyright (C) 2019 - 2026 Jan Böhmer (https://github.com/jbtronics) |
| 6 | + * |
| 7 | + * This program is free software: you can redistribute it and/or modify |
| 8 | + * it under the terms of the GNU Affero General Public License as published |
| 9 | + * by the Free Software Foundation, either version 3 of the License, or |
| 10 | + * (at your option) any later version. |
| 11 | + * |
| 12 | + * This program is distributed in the hope that it will be useful, |
| 13 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | + * GNU Affero General Public License for more details. |
| 16 | + * |
| 17 | + * You should have received a copy of the GNU Affero General Public License |
| 18 | + * along with this program. If not, see <https://www.gnu.org/licenses/>. |
| 19 | + */ |
| 20 | + |
| 21 | +declare(strict_types=1); |
| 22 | + |
| 23 | +namespace App\Mcp\JsonSchema; |
| 24 | + |
| 25 | +use ApiPlatform\JsonSchema\Schema; |
| 26 | +use ApiPlatform\JsonSchema\SchemaFactoryInterface; |
| 27 | +use ApiPlatform\Metadata\Operation; |
| 28 | +use Symfony\Component\DependencyInjection\Attribute\AsAlias; |
| 29 | +use Symfony\Component\DependencyInjection\Attribute\AsDecorator; |
| 30 | +use Symfony\Component\DependencyInjection\Attribute\AutowireDecorated; |
| 31 | + |
| 32 | +/** |
| 33 | + * Overwrite the default JSON Schema factory to resolve $ref and allOf into a flat schema. |
| 34 | + * This is a workaround until https://github.com/api-platform/core/pull/7962 is merged |
| 35 | + */ |
| 36 | +#[AsAlias('api_platform.mcp.json_schema.schema_factory')] |
| 37 | +readonly class FixedSchemaFactory implements SchemaFactoryInterface |
| 38 | +{ |
| 39 | + public function __construct( |
| 40 | + private readonly SchemaFactoryInterface $decorated, |
| 41 | + ) { |
| 42 | + } |
| 43 | + |
| 44 | + public function buildSchema(string $className, string $format = 'json', string $type = Schema::TYPE_OUTPUT, ?Operation $operation = null, ?Schema $schema = null, ?array $serializerContext = null, bool $forceCollection = false): Schema |
| 45 | + { |
| 46 | + $schema = $this->decorated->buildSchema($className, $format, $type, $operation, $schema, $serializerContext, $forceCollection); |
| 47 | + |
| 48 | + $definitions = []; |
| 49 | + foreach ($schema->getDefinitions() as $key => $definition) { |
| 50 | + $definitions[$key] = $definition instanceof \ArrayObject ? $definition->getArrayCopy() : (array) $definition; |
| 51 | + } |
| 52 | + |
| 53 | + $rootKey = $schema->getRootDefinitionKey(); |
| 54 | + if (null !== $rootKey) { |
| 55 | + $root = $definitions[$rootKey] ?? []; |
| 56 | + } else { |
| 57 | + // Collection schemas (and others) put allOf/type directly on the root |
| 58 | + $root = $schema->getArrayCopy(false); |
| 59 | + } |
| 60 | + |
| 61 | + $flat = self::resolveNode($root, $definitions); |
| 62 | + |
| 63 | + $flatSchema = new Schema(Schema::VERSION_JSON_SCHEMA); |
| 64 | + unset($flatSchema['$schema']); |
| 65 | + foreach ($flat as $key => $value) { |
| 66 | + $flatSchema[$key] = $value; |
| 67 | + } |
| 68 | + |
| 69 | + return $flatSchema; |
| 70 | + } |
| 71 | + |
| 72 | + /** |
| 73 | + * Recursively resolve $ref, allOf, and nested structures into a flat schema node. |
| 74 | + * |
| 75 | + * @param array $resolving Tracks the current $ref resolution chain to detect circular references |
| 76 | + */ |
| 77 | + public static function resolveNode(array|\ArrayObject $node, array $definitions, array &$resolving = []): array |
| 78 | + { |
| 79 | + if ($node instanceof \ArrayObject) { |
| 80 | + $node = $node->getArrayCopy(); |
| 81 | + } |
| 82 | + |
| 83 | + if (isset($node['$ref'])) { |
| 84 | + $refKey = str_replace('#/definitions/', '', $node['$ref']); |
| 85 | + if (!isset($definitions[$refKey]) || isset($resolving[$refKey])) { |
| 86 | + return ['type' => 'object']; |
| 87 | + } |
| 88 | + $resolving[$refKey] = true; |
| 89 | + $resolved = self::resolveNode($definitions[$refKey], $definitions, $resolving); |
| 90 | + unset($resolving[$refKey]); |
| 91 | + |
| 92 | + return $resolved; |
| 93 | + } |
| 94 | + |
| 95 | + if (isset($node['allOf'])) { |
| 96 | + $merged = ['type' => 'object', 'properties' => []]; |
| 97 | + $requiredSets = []; |
| 98 | + foreach ($node['allOf'] as $entry) { |
| 99 | + $resolved = self::resolveNode($entry, $definitions, $resolving); |
| 100 | + if (isset($resolved['properties'])) { |
| 101 | + foreach ($resolved['properties'] as $k => $v) { |
| 102 | + $merged['properties'][$k] = $v; |
| 103 | + } |
| 104 | + } |
| 105 | + if (isset($resolved['required'])) { |
| 106 | + $requiredSets[] = $resolved['required']; |
| 107 | + } |
| 108 | + } |
| 109 | + |
| 110 | + if ($requiredSets) { |
| 111 | + $merged['required'] = array_merge(...$requiredSets); |
| 112 | + } |
| 113 | + if ([] === $merged['properties']) { |
| 114 | + unset($merged['properties']); |
| 115 | + } |
| 116 | + if (isset($node['description'])) { |
| 117 | + $merged['description'] = $node['description']; |
| 118 | + } |
| 119 | + |
| 120 | + return self::resolveDeep($merged, $definitions, $resolving); |
| 121 | + } |
| 122 | + |
| 123 | + // oneOf/anyOf nodes must not receive a type fallback — their type is expressed |
| 124 | + // through the sub-schemas. Adding 'type: object' here would break schemas like |
| 125 | + // HydraItemBaseSchema's @context, which is oneOf: [string, object]. |
| 126 | + if (isset($node['oneOf']) || isset($node['anyOf'])) { |
| 127 | + return self::resolveDeep($node, $definitions, $resolving); |
| 128 | + } |
| 129 | + |
| 130 | + if (!isset($node['type'])) { |
| 131 | + $node['type'] = 'object'; |
| 132 | + } |
| 133 | + |
| 134 | + return self::resolveDeep($node, $definitions, $resolving); |
| 135 | + } |
| 136 | + |
| 137 | + /** |
| 138 | + * Recursively resolve nested properties and array items. |
| 139 | + */ |
| 140 | + private static function resolveDeep(array $node, array $definitions, array &$resolving): array |
| 141 | + { |
| 142 | + if (isset($node['items'])) { |
| 143 | + $node['items'] = self::resolveNode( |
| 144 | + $node['items'] instanceof \ArrayObject ? $node['items']->getArrayCopy() : $node['items'], |
| 145 | + $definitions, |
| 146 | + $resolving, |
| 147 | + ); |
| 148 | + } |
| 149 | + |
| 150 | + if (isset($node['properties']) && \is_array($node['properties'])) { |
| 151 | + foreach ($node['properties'] as $propName => $propSchema) { |
| 152 | + $node['properties'][$propName] = self::resolveNode( |
| 153 | + $propSchema instanceof \ArrayObject ? $propSchema->getArrayCopy() : $propSchema, |
| 154 | + $definitions, |
| 155 | + $resolving, |
| 156 | + ); |
| 157 | + } |
| 158 | + } |
| 159 | + |
| 160 | + return $node; |
| 161 | + } |
| 162 | +} |
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