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function.php
266 lines
| 1 | <?php |
| 2 | |
| 3 | class Meow_MWAI_Query_Function { |
| 4 | public string $name; |
| 5 | public string $description; |
| 6 | public array $parameters; |
| 7 | public string $type; // 'code-engine', etc... |
| 8 | public string $target; // 'server' or 'client' |
| 9 | public string $behavior; // 'dynamic' (default) or 'static' |
| 10 | public ?string $id; |
| 11 | // Raw JSON Schema (MCP-style inputSchema). When set, it is sent to the |
| 12 | // providers as-is and $parameters is ignored, so rich schemas (nested |
| 13 | // objects, oneOf, items types) survive without being flattened. |
| 14 | public ?array $rawSchema = null; |
| 15 | |
| 16 | public function __construct( |
| 17 | string $name, |
| 18 | string $description, |
| 19 | array $parameters = [], |
| 20 | ?string $type = null, |
| 21 | ?string $id = null, |
| 22 | ?string $target = null, |
| 23 | ?string $behavior = null |
| 24 | ) { |
| 25 | // $name: The name of the function to be called. |
| 26 | // Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. |
| 27 | if ( !preg_match( '/^[a-zA-Z0-9_-]{1,64}$/', $name ) ) { |
| 28 | throw new InvalidArgumentException( "AI Engine: Invalid function name ($name) for Meow_MWAI_Query_Function." ); |
| 29 | } |
| 30 | |
| 31 | foreach ( $parameters as $parameter ) { |
| 32 | if ( !( $parameter instanceof Meow_MWAI_Query_Parameter ) ) { |
| 33 | throw new InvalidArgumentException( 'AI Engine: Invalid parameter for Meow_MWAI_Query_Function.' ); |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | $this->name = $name; |
| 38 | $this->description = $description; |
| 39 | $this->parameters = $parameters; |
| 40 | $this->type = $type ?? 'manual'; |
| 41 | $this->id = $id; |
| 42 | $this->target = $target ?? 'server'; |
| 43 | $this->behavior = ( $behavior === 'static' ) ? 'static' : 'dynamic'; |
| 44 | } |
| 45 | |
| 46 | public static function from_raw_schema( |
| 47 | string $name, |
| 48 | string $description, |
| 49 | ?array $schema, |
| 50 | ?string $type = null, |
| 51 | ?string $id = null |
| 52 | ): Meow_MWAI_Query_Function { |
| 53 | $function = new self( $name, $description, [], $type, $id ); |
| 54 | $function->rawSchema = is_array( $schema ) ? $schema : null; |
| 55 | return $function; |
| 56 | } |
| 57 | |
| 58 | private function normalized_raw_schema(): array { |
| 59 | $schema = $this->rawSchema; |
| 60 | unset( $schema['$schema'] ); |
| 61 | if ( empty( $schema['type'] ) ) { |
| 62 | $schema['type'] = 'object'; |
| 63 | } |
| 64 | // An empty PHP array encodes as [], but every provider requires {} here. |
| 65 | if ( empty( $schema['properties'] ) ) { |
| 66 | $schema['properties'] = new stdClass(); |
| 67 | } |
| 68 | if ( isset( $schema['required'] ) && empty( $schema['required'] ) ) { |
| 69 | unset( $schema['required'] ); |
| 70 | } |
| 71 | return $schema; |
| 72 | } |
| 73 | |
| 74 | public function serializeForOpenAI() { |
| 75 | if ( $this->rawSchema !== null ) { |
| 76 | return [ |
| 77 | 'name' => $this->name, |
| 78 | 'description' => $this->description, |
| 79 | 'parameters' => $this->normalized_raw_schema(), |
| 80 | ]; |
| 81 | } |
| 82 | |
| 83 | // Initialize the base structure with name and description |
| 84 | $json = [ 'name' => $this->name, 'description' => $this->description ]; |
| 85 | |
| 86 | $properties = []; |
| 87 | $required = []; |
| 88 | |
| 89 | // Loop through each parameter to construct the properties object |
| 90 | if ( !empty( $this->parameters ) ) { |
| 91 | foreach ( $this->parameters as $parameter ) { |
| 92 | |
| 93 | $properties[$parameter->name] = [ |
| 94 | 'type' => $parameter->type, // Assuming each parameter has a 'type' attribute |
| 95 | 'description' => $parameter->description, // Assuming each parameter has a 'description' attribute |
| 96 | ]; |
| 97 | |
| 98 | // If the parameter type is "array" and has a "items" attribute, include it |
| 99 | if ( $parameter->type === 'array' ) { |
| 100 | $properties[$parameter->name]['items'] = [ |
| 101 | 'type' => 'string', // Assuming the items are strings |
| 102 | ]; |
| 103 | } |
| 104 | |
| 105 | // If an enum is set for the parameter, include it |
| 106 | if ( isset( $parameter->enum ) ) { |
| 107 | $properties[$parameter->name]['enum'] = $parameter->enum; |
| 108 | } |
| 109 | |
| 110 | // If the parameter is required, add its name to the required array |
| 111 | if ( $parameter->required ) { |
| 112 | $required[] = $parameter->name; |
| 113 | } |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | // Always include parameters field (required by some APIs like OVH even when empty) |
| 118 | // Properties must be an object (stdClass) when empty, not an empty array |
| 119 | $json['parameters'] = [ |
| 120 | 'type' => 'object', |
| 121 | 'properties' => empty( $properties ) ? new stdClass() : $properties, |
| 122 | 'required' => $required, |
| 123 | ]; |
| 124 | |
| 125 | return $json; |
| 126 | } |
| 127 | |
| 128 | public function serializeForAnthropic() { |
| 129 | if ( $this->rawSchema !== null ) { |
| 130 | return [ |
| 131 | 'name' => $this->name, |
| 132 | 'description' => $this->description, |
| 133 | 'input_schema' => $this->normalized_raw_schema(), |
| 134 | ]; |
| 135 | } |
| 136 | |
| 137 | $json = [ |
| 138 | 'name' => $this->name, |
| 139 | 'description' => $this->description, |
| 140 | 'input_schema' => [ |
| 141 | 'type' => 'object', |
| 142 | 'properties' => new stdClass() |
| 143 | ], |
| 144 | ]; |
| 145 | |
| 146 | if ( !empty( $this->parameters ) ) { |
| 147 | $properties = []; |
| 148 | $required = []; |
| 149 | foreach ( $this->parameters as $parameter ) { |
| 150 | $properties[$parameter->name] = [ |
| 151 | 'type' => $parameter->type, |
| 152 | 'description' => $parameter->description, |
| 153 | ]; |
| 154 | if ( isset( $parameter->enum ) ) { |
| 155 | $properties[$parameter->name]['enum'] = $parameter->enum; |
| 156 | } |
| 157 | if ( $parameter->required ) { |
| 158 | $required[] = $parameter->name; |
| 159 | } |
| 160 | } |
| 161 | $json['input_schema']['properties'] = empty( $properties ) ? new stdClass() : $properties; |
| 162 | if ( !empty( $required ) ) { |
| 163 | $json['input_schema']['required'] = $required; |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | return $json; |
| 168 | } |
| 169 | |
| 170 | public function serializeForGemini() { |
| 171 | if ( $this->rawSchema !== null ) { |
| 172 | return [ |
| 173 | 'name' => $this->name, |
| 174 | 'description' => $this->description, |
| 175 | 'parameters' => $this->normalized_raw_schema(), |
| 176 | ]; |
| 177 | } |
| 178 | |
| 179 | $json = [ |
| 180 | 'name' => $this->name, |
| 181 | 'description' => $this->description, |
| 182 | 'parameters' => [ |
| 183 | 'type' => 'object', |
| 184 | 'properties' => new stdClass(), |
| 185 | 'required' => [] |
| 186 | ] |
| 187 | ]; |
| 188 | |
| 189 | if ( !empty( $this->parameters ) ) { |
| 190 | $properties = []; |
| 191 | $required = []; |
| 192 | foreach ( $this->parameters as $parameter ) { |
| 193 | $properties[$parameter->name] = [ |
| 194 | 'type' => $parameter->type, |
| 195 | 'description' => $parameter->description, |
| 196 | ]; |
| 197 | |
| 198 | // If the parameter type is "array" and has a "items" attribute, include it |
| 199 | if ( $parameter->type === 'array' ) { |
| 200 | $properties[$parameter->name]['items'] = [ |
| 201 | 'type' => 'string', |
| 202 | ]; |
| 203 | } |
| 204 | |
| 205 | if ( isset( $parameter->enum ) ) { |
| 206 | $properties[$parameter->name]['enum'] = $parameter->enum; |
| 207 | } |
| 208 | if ( $parameter->required ) { |
| 209 | $required[] = $parameter->name; |
| 210 | } |
| 211 | } |
| 212 | // Gemini requires properties to be an object (stdClass), not an array |
| 213 | $json['parameters']['properties'] = empty( $properties ) ? new stdClass() : (object) $properties; |
| 214 | $json['parameters']['required'] = $required; |
| 215 | } |
| 216 | |
| 217 | return $json; |
| 218 | } |
| 219 | |
| 220 | public static function fromJson( array $json ): Meow_MWAI_Query_Function { |
| 221 | $funcName = $json['name']; |
| 222 | $funcDesc = $json['description'] ?? ''; |
| 223 | $funcType = $json['type'] ?? null; |
| 224 | $funcId = $json['id'] ?? null; |
| 225 | $funcTarget = $json['target'] ?? null; |
| 226 | $funcBehavior = $json['behavior'] ?? null; |
| 227 | if ( $funcId === null && !empty( $json['snippetId'] ) ) { |
| 228 | $funcId = $json['snippetId']; |
| 229 | } |
| 230 | $args = []; |
| 231 | if ( !empty( $json['args'] ) ) { |
| 232 | foreach ( $json['args'] as $arg ) { |
| 233 | $name = ltrim( $arg['name'], '$' ); |
| 234 | $desc = $arg['description'] ?? null; |
| 235 | $type = $arg['type'] ?? 'string'; |
| 236 | $required = $arg['required'] ?? false; |
| 237 | $args[] = new Meow_MWAI_Query_Parameter( $name, $desc, $type, $required ); |
| 238 | } |
| 239 | } |
| 240 | return new self( $funcName, $funcDesc, $args, $funcType, $funcId, $funcTarget, $funcBehavior ); |
| 241 | } |
| 242 | |
| 243 | public static function toJson( Meow_MWAI_Query_Function $function ): array { |
| 244 | $json = [ |
| 245 | 'name' => $function->name, |
| 246 | 'desc' => $function->description, |
| 247 | 'type' => $function->type, |
| 248 | 'id' => $function->id, |
| 249 | 'target' => $function->target, |
| 250 | 'behavior' => $function->behavior, |
| 251 | 'args' => [], |
| 252 | ]; |
| 253 | |
| 254 | foreach ( $function->parameters as $param ) { |
| 255 | $json['args'][] = [ |
| 256 | 'name' => $param->name, |
| 257 | 'desc' => $param->description, |
| 258 | 'type' => $param->type, |
| 259 | 'required' => $param->required, |
| 260 | ]; |
| 261 | } |
| 262 | |
| 263 | return $json; |
| 264 | } |
| 265 | } |
| 266 |