| 1 |
<?php |
| 2 |
/** |
| 3 |
* Prompts method handlers for MCP requests. |
| 4 |
* |
| 5 |
* @package McpAdapter |
| 6 |
*/ |
| 7 |
|
| 8 |
declare( strict_types=1 ); |
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|
| 10 |
namespace WP\MCP\Handlers\Prompts; |
| 11 |
|
| 12 |
use WP\MCP\Core\McpServer; |
| 13 |
use WP\MCP\Domain\Utils\McpValidator; |
| 14 |
use WP\MCP\Handlers\HandlerHelperTrait; |
| 15 |
use WP\MCP\Infrastructure\ErrorHandling\McpErrorFactory; |
| 16 |
use WP\McpSchema\Server\Prompts\DTO\GetPromptResult; |
| 17 |
use WP\McpSchema\Server\Prompts\DTO\ListPromptsResult; |
| 18 |
use WP\McpSchema\Server\Prompts\DTO\Prompt as PromptDto; |
| 19 |
use WP\McpSchema\Server\Prompts\DTO\PromptMessage; |
| 20 |
|
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/** |
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* Handles prompts-related MCP methods. |
| 23 |
* |
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* @since 0.5.0 |
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*/ |
| 26 |
class PromptsHandler { |
| 27 |
use HandlerHelperTrait; |
| 28 |
|
| 29 |
/** |
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* Valid content types from ContentBlockFactory. |
| 31 |
* |
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* @var list<string> |
| 33 |
*/ |
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private static array $valid_content_types = array( 'text', 'image', 'audio', 'resource_link', 'resource' ); |
| 35 |
|
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/** |
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* Valid role values for PromptMessage. |
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* |
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* @var list<string> |
| 40 |
*/ |
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private static array $valid_roles = array( 'user', 'assistant' ); |
| 42 |
|
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/** |
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* Default role for messages when not specified. |
| 45 |
* |
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* @var string |
| 47 |
*/ |
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private static string $default_role = 'user'; |
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|
| 50 |
/** |
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* The WordPress MCP instance. |
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* |
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* @var \WP\MCP\Core\McpServer |
| 54 |
*/ |
| 55 |
private McpServer $mcp; |
| 56 |
|
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/** |
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* Constructor. |
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* |
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* @param \WP\MCP\Core\McpServer $mcp The WordPress MCP instance. |
| 61 |
*/ |
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public function __construct( McpServer $mcp ) { |
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$this->mcp = $mcp; |
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} |
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|
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/** |
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* Handles the prompts/list request. |
| 68 |
* |
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* @return \WP\McpSchema\Server\Prompts\DTO\ListPromptsResult Response with prompts list DTO. |
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*/ |
| 71 |
public function list_prompts(): ListPromptsResult { |
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$prompts = array_values( $this->mcp->get_prompts() ); |
| 73 |
|
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/** |
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* Filters the list of prompts before returning to the client. |
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* |
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* Use this filter to filter prompts by context, add dynamic prompts, |
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* or reorder the prompts list. |
| 79 |
* |
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* @since 0.5.0 |
| 81 |
* |
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* @param array<\WP\McpSchema\Server\Prompts\DTO\Prompt> $prompts Array of Prompt DTOs. |
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* @param \WP\MCP\Core\McpServer $server The MCP server instance. |
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*/ |
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$prompts = $this->validate_filtered_list( |
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apply_filters( 'mcp_adapter_prompts_list', $prompts, $this->mcp ), |
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$prompts, |
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'mcp_adapter_prompts_list', |
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$this->mcp->get_error_handler() |
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); |
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|
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return ListPromptsResult::fromArray( |
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array( |
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'prompts' => $prompts, |
| 95 |
) |
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); |
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} |
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|
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/** |
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* Handles the prompts/get request. |
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* |
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* @param array $params Request parameters. |
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* @param string|int|null $request_id Optional. The request ID for JSON-RPC. Default 0. |
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* |
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* @return \WP\McpSchema\Server\Prompts\DTO\GetPromptResult|\WP\McpSchema\Common\JsonRpc\DTO\JSONRPCErrorResponse Response with prompt execution results or error. |
| 106 |
*/ |
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public function get_prompt( array $params, $request_id = 0 ) { |
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// Extract parameters using helper method. |
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$request_params = $this->extract_params( $params ); |
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|
| 111 |
if ( ! isset( $request_params['name'] ) ) { |
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return McpErrorFactory::missing_parameter( $request_id, 'name' ); |
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} |
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|
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$prompt_name = (string) $request_params['name']; |
| 116 |
$prompt_name = trim( $prompt_name ); |
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|
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if ( isset( $request_params['arguments'] ) && ! is_array( $request_params['arguments'] ) ) { |
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return McpErrorFactory::invalid_params( $request_id, 'arguments must be an object' ); |
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} |
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|
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$mcp_prompt = $this->mcp->get_mcp_prompt( $prompt_name ); |
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|
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if ( ! $mcp_prompt ) { |
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return McpErrorFactory::prompt_not_found( $request_id, $prompt_name ); |
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} |
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|
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/** @var \WP\McpSchema\Server\Prompts\DTO\Prompt $prompt */ |
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$prompt = $mcp_prompt->get_protocol_dto(); |
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|
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// Get the arguments for the prompt. |
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$arguments = $request_params['arguments'] ?? array(); |
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|
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try { |
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$permission = $mcp_prompt->check_permission( $arguments ); |
| 136 |
if ( true !== $permission ) { |
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$error_message = 'Access denied for prompt: ' . $prompt_name; |
| 138 |
if ( is_wp_error( $permission ) ) { |
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$error_message = $permission->get_error_message(); |
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} |
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|
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return McpErrorFactory::permission_denied( $request_id, $error_message ); |
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} |
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|
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/** |
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* Filters prompt arguments before execution, or short-circuits execution entirely. |
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* |
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* Return the (optionally modified) arguments array to proceed with execution, |
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* or return a WP_Error to block execution and return an error to the client. |
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* |
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* @since 0.5.0 |
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* |
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* @param array $arguments The prompt arguments. |
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* @param string $prompt_name The prompt name being retrieved. |
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* @param \WP\MCP\Domain\Prompts\McpPrompt $mcp_prompt The MCP prompt instance. |
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* @param \WP\MCP\Core\McpServer $server The MCP server instance. |
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*/ |
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$arguments = apply_filters( 'mcp_adapter_pre_prompt_get', $arguments, $prompt_name, $mcp_prompt, $this->mcp ); |
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|
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// Allow pre-filter to short-circuit execution by returning WP_Error. |
| 161 |
if ( is_wp_error( $arguments ) ) { |
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return McpErrorFactory::internal_error( $request_id, $arguments->get_error_message() ); |
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} |
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|
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$result = $mcp_prompt->execute( $arguments ); |
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|
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/** |
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* Filters the prompt execution result before normalization. |
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* |
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* Use this filter for message transformation, context injection, |
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* content enrichment, or audit logging. |
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* |
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* @since 0.5.0 |
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* |
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* @param mixed|\WP_Error $result The raw execution result (may be WP_Error). |
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* @param array $arguments The prompt arguments used. |
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* @param string $prompt_name The prompt name. |
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* @param \WP\MCP\Domain\Prompts\McpPrompt $mcp_prompt The MCP prompt instance. |
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* @param \WP\MCP\Core\McpServer $server The MCP server instance. |
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*/ |
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$result = apply_filters( 'mcp_adapter_prompt_get_result', $result, $arguments, $prompt_name, $mcp_prompt, $this->mcp ); |
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|
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if ( is_wp_error( $result ) ) { |
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$this->mcp->get_error_handler()->log( |
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'Prompt execution returned WP_Error', |
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array( |
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'prompt_name' => $prompt_name, |
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'error_code' => $result->get_error_code(), |
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'error_message' => $result->get_error_message(), |
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) |
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); |
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|
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return McpErrorFactory::internal_error( $request_id, $result->get_error_message() ); |
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} |
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|
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return $this->normalize_result_to_dto( $result, $prompt, $prompt_name ); |
| 197 |
} catch ( \Throwable $e ) { |
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$this->mcp->get_error_handler()->log( |
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'Prompt execution failed', |
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array( |
| 201 |
'prompt_name' => $prompt_name, |
| 202 |
'arguments' => $arguments, |
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'error' => $e->getMessage(), |
| 204 |
) |
| 205 |
); |
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|
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return McpErrorFactory::internal_error( $request_id, 'Prompt execution failed' ); |
| 208 |
} |
| 209 |
} |
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|
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// ========================================================================= |
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// Result Normalization (Tiered Convenience Shortcuts) |
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// ========================================================================= |
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|
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/** |
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* Normalize and convert prompt execution result to GetPromptResult DTO. |
| 217 |
* |
| 218 |
* Supports tiered return formats: |
| 219 |
* - Tier 1: Full MCP format with 'messages' array |
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* - Tier 2: Simple 'text' shorthand |
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* - Tier 3: Single message with 'role' and 'content' |
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* - Tier 4: Multi-text with 'texts' array |
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* - Tier 5: Fallback JSON encoding for arbitrary data |
| 224 |
* |
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* @since 0.5.0 |
| 226 |
* |
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* @param array $result Raw result from prompt execution. |
| 228 |
* @param \WP\McpSchema\Server\Prompts\DTO\Prompt $prompt The prompt DTO for description fallback. |
| 229 |
* @param string $prompt_name Prompt name for logging. |
| 230 |
* |
| 231 |
* @return \WP\McpSchema\Server\Prompts\DTO\GetPromptResult |
| 232 |
*/ |
| 233 |
private function normalize_result_to_dto( |
| 234 |
array $result, |
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PromptDto $prompt, |
| 236 |
string $prompt_name |
| 237 |
): GetPromptResult { |
| 238 |
// Tier 1: Full MCP format with 'messages' array. |
| 239 |
if ( isset( $result['messages'] ) && is_array( $result['messages'] ) ) { |
| 240 |
return $this->normalize_tier1_messages( $result, $prompt, $prompt_name ); |
| 241 |
} |
| 242 |
|
| 243 |
// Tier 2: Simple 'text' shorthand. |
| 244 |
if ( isset( $result['text'] ) && is_string( $result['text'] ) ) { |
| 245 |
return $this->normalize_tier2_text( $result, $prompt ); |
| 246 |
} |
| 247 |
|
| 248 |
// Tier 3: Single message with 'role' key. |
| 249 |
if ( isset( $result['role'] ) && isset( $result['content'] ) ) { |
| 250 |
return $this->normalize_tier3_single_message( $result, $prompt, $prompt_name ); |
| 251 |
} |
| 252 |
|
| 253 |
// Tier 4: Multi-text with 'texts' array. |
| 254 |
if ( isset( $result['texts'] ) && is_array( $result['texts'] ) ) { |
| 255 |
return $this->normalize_tier4_texts( $result, $prompt ); |
| 256 |
} |
| 257 |
|
| 258 |
// Tier 5: Fallback - JSON encode arbitrary data. |
| 259 |
return $this->normalize_tier5_fallback( $result, $prompt, $prompt_name ); |
| 260 |
} |
| 261 |
|
| 262 |
/** |
| 263 |
* Tier 1: Full MCP-compliant format with 'messages' array. |
| 264 |
* |
| 265 |
* @since 0.5.0 |
| 266 |
* |
| 267 |
* @param array $result Raw result with 'messages' key. |
| 268 |
* @param \WP\McpSchema\Server\Prompts\DTO\Prompt $prompt The prompt DTO. |
| 269 |
* @param string $prompt_name Prompt name for logging. |
| 270 |
* |
| 271 |
* @return \WP\McpSchema\Server\Prompts\DTO\GetPromptResult |
| 272 |
*/ |
| 273 |
private function normalize_tier1_messages( |
| 274 |
array $result, |
| 275 |
PromptDto $prompt, |
| 276 |
string $prompt_name |
| 277 |
): GetPromptResult { |
| 278 |
$message_dtos = array(); |
| 279 |
|
| 280 |
foreach ( $result['messages'] as $index => $message ) { |
| 281 |
if ( ! is_array( $message ) ) { |
| 282 |
$this->mcp->get_error_handler()->log( |
| 283 |
'Invalid message structure in prompt result, skipping', |
| 284 |
array( |
| 285 |
'prompt_name' => $prompt_name, |
| 286 |
'message_index' => $index, |
| 287 |
'message_type' => gettype( $message ), |
| 288 |
), |
| 289 |
'warning' |
| 290 |
); |
| 291 |
continue; |
| 292 |
} |
| 293 |
|
| 294 |
$message_dtos[] = $this->validate_and_create_message( $message, $prompt_name ); |
| 295 |
} |
| 296 |
|
| 297 |
// Ensure we have at least one message. |
| 298 |
if ( empty( $message_dtos ) ) { |
| 299 |
$message_dtos[] = PromptMessage::fromArray( |
| 300 |
array( |
| 301 |
'role' => self::$default_role, |
| 302 |
'content' => array( |
| 303 |
'type' => 'text', |
| 304 |
'text' => '(No messages returned)', |
| 305 |
), |
| 306 |
) |
| 307 |
); |
| 308 |
} |
| 309 |
|
| 310 |
return GetPromptResult::fromArray( |
| 311 |
array( |
| 312 |
'messages' => $message_dtos, |
| 313 |
'description' => $result['description'] ?? $prompt->getDescription(), |
| 314 |
) |
| 315 |
); |
| 316 |
} |
| 317 |
|
| 318 |
/** |
| 319 |
* Tier 2: Simple 'text' shorthand. |
| 320 |
* |
| 321 |
* Creates a single user message with text content. |
| 322 |
* |
| 323 |
* @since 0.5.0 |
| 324 |
* |
| 325 |
* @param array $result Raw result with 'text' key. |
| 326 |
* @param \WP\McpSchema\Server\Prompts\DTO\Prompt $prompt The prompt DTO. |
| 327 |
* |
| 328 |
* @return \WP\McpSchema\Server\Prompts\DTO\GetPromptResult |
| 329 |
*/ |
| 330 |
private function normalize_tier2_text( array $result, PromptDto $prompt ): GetPromptResult { |
| 331 |
$content = array( |
| 332 |
'type' => 'text', |
| 333 |
'text' => (string) $result['text'], |
| 334 |
); |
| 335 |
|
| 336 |
// Support optional annotations on the text. |
| 337 |
if ( isset( $result['annotations'] ) && is_array( $result['annotations'] ) ) { |
| 338 |
$content['annotations'] = $result['annotations']; |
| 339 |
} |
| 340 |
|
| 341 |
$message_dto = PromptMessage::fromArray( |
| 342 |
array( |
| 343 |
'role' => self::$default_role, |
| 344 |
'content' => $content, |
| 345 |
) |
| 346 |
); |
| 347 |
|
| 348 |
return GetPromptResult::fromArray( |
| 349 |
array( |
| 350 |
'messages' => array( $message_dto ), |
| 351 |
'description' => $result['description'] ?? $prompt->getDescription(), |
| 352 |
) |
| 353 |
); |
| 354 |
} |
| 355 |
|
| 356 |
/** |
| 357 |
* Tier 3: Single message with 'role' and 'content'. |
| 358 |
* |
| 359 |
* @since 0.5.0 |
| 360 |
* |
| 361 |
* @param array $result Raw result with 'role' and 'content' keys. |
| 362 |
* @param \WP\McpSchema\Server\Prompts\DTO\Prompt $prompt The prompt DTO. |
| 363 |
* @param string $prompt_name Prompt name for logging. |
| 364 |
* |
| 365 |
* @return \WP\McpSchema\Server\Prompts\DTO\GetPromptResult |
| 366 |
*/ |
| 367 |
private function normalize_tier3_single_message( |
| 368 |
array $result, |
| 369 |
PromptDto $prompt, |
| 370 |
string $prompt_name |
| 371 |
): GetPromptResult { |
| 372 |
$message_dto = $this->validate_and_create_message( $result, $prompt_name ); |
| 373 |
|
| 374 |
return GetPromptResult::fromArray( |
| 375 |
array( |
| 376 |
'messages' => array( $message_dto ), |
| 377 |
'description' => $result['description'] ?? $prompt->getDescription(), |
| 378 |
) |
| 379 |
); |
| 380 |
} |
| 381 |
|
| 382 |
/** |
| 383 |
* Tier 4: Multi-text with 'texts' array. |
| 384 |
* |
| 385 |
* Creates multiple messages with the same role. |
| 386 |
* |
| 387 |
* @since 0.5.0 |
| 388 |
* |
| 389 |
* @param array $result Raw result with 'texts' key. |
| 390 |
* @param \WP\McpSchema\Server\Prompts\DTO\Prompt $prompt The prompt DTO. |
| 391 |
* |
| 392 |
* @return \WP\McpSchema\Server\Prompts\DTO\GetPromptResult |
| 393 |
*/ |
| 394 |
private function normalize_tier4_texts( array $result, PromptDto $prompt ): GetPromptResult { |
| 395 |
$role = $this->validate_role( $result['role'] ?? self::$default_role, '' ); |
| 396 |
$message_dtos = array(); |
| 397 |
|
| 398 |
foreach ( $result['texts'] as $text ) { |
| 399 |
if ( ! is_string( $text ) ) { |
| 400 |
continue; |
| 401 |
} |
| 402 |
|
| 403 |
$message_dtos[] = PromptMessage::fromArray( |
| 404 |
array( |
| 405 |
'role' => $role, |
| 406 |
'content' => array( |
| 407 |
'type' => 'text', |
| 408 |
'text' => $text, |
| 409 |
), |
| 410 |
) |
| 411 |
); |
| 412 |
} |
| 413 |
|
| 414 |
// Ensure we have at least one message. |
| 415 |
if ( empty( $message_dtos ) ) { |
| 416 |
$message_dtos[] = PromptMessage::fromArray( |
| 417 |
array( |
| 418 |
'role' => $role, |
| 419 |
'content' => array( |
| 420 |
'type' => 'text', |
| 421 |
'text' => '(No texts provided)', |
| 422 |
), |
| 423 |
) |
| 424 |
); |
| 425 |
} |
| 426 |
|
| 427 |
return GetPromptResult::fromArray( |
| 428 |
array( |
| 429 |
'messages' => $message_dtos, |
| 430 |
'description' => $result['description'] ?? $prompt->getDescription(), |
| 431 |
) |
| 432 |
); |
| 433 |
} |
| 434 |
|
| 435 |
/** |
| 436 |
* Tier 5: Fallback - JSON encode arbitrary data. |
| 437 |
* |
| 438 |
* Used when no other tier matches. Logs an observability event. |
| 439 |
* |
| 440 |
* @since 0.5.0 |
| 441 |
* |
| 442 |
* @param array $result Raw result (arbitrary structure). |
| 443 |
* @param \WP\McpSchema\Server\Prompts\DTO\Prompt $prompt The prompt DTO. |
| 444 |
* @param string $prompt_name Prompt name for logging. |
| 445 |
* |
| 446 |
* @return \WP\McpSchema\Server\Prompts\DTO\GetPromptResult |
| 447 |
*/ |
| 448 |
private function normalize_tier5_fallback( |
| 449 |
array $result, |
| 450 |
PromptDto $prompt, |
| 451 |
string $prompt_name |
| 452 |
): GetPromptResult { |
| 453 |
// Log observability event for fallback normalization. |
| 454 |
$this->mcp->get_observability_handler()->record_event( |
| 455 |
'prompt_result_fallback_normalization', |
| 456 |
array( |
| 457 |
'prompt_name' => $prompt_name, |
| 458 |
'result_keys' => array_keys( $result ), |
| 459 |
) |
| 460 |
); |
| 461 |
|
| 462 |
$json_content = wp_json_encode( $result, JSON_PRETTY_PRINT ); |
| 463 |
if ( false === $json_content ) { |
| 464 |
$json_content = '{}'; |
| 465 |
} |
| 466 |
|
| 467 |
$message_dto = PromptMessage::fromArray( |
| 468 |
array( |
| 469 |
'role' => self::$default_role, |
| 470 |
'content' => array( |
| 471 |
'type' => 'text', |
| 472 |
'text' => $json_content, |
| 473 |
), |
| 474 |
) |
| 475 |
); |
| 476 |
|
| 477 |
return GetPromptResult::fromArray( |
| 478 |
array( |
| 479 |
'messages' => array( $message_dto ), |
| 480 |
'description' => $prompt->getDescription(), |
| 481 |
) |
| 482 |
); |
| 483 |
} |
| 484 |
|
| 485 |
// ========================================================================= |
| 486 |
// Validation Helpers |
| 487 |
// ========================================================================= |
| 488 |
|
| 489 |
/** |
| 490 |
* Validate message structure and create PromptMessage DTO. |
| 491 |
* |
| 492 |
* Validates role and content type, applying defaults where needed. |
| 493 |
* |
| 494 |
* @since 0.5.0 |
| 495 |
* |
| 496 |
* @param array $message Raw message array. |
| 497 |
* @param string $prompt_name Prompt name for logging. |
| 498 |
* |
| 499 |
* @return \WP\McpSchema\Server\Prompts\DTO\PromptMessage |
| 500 |
*/ |
| 501 |
private function validate_and_create_message( array $message, string $prompt_name ): PromptMessage { |
| 502 |
// Validate and normalize role. |
| 503 |
$role = $this->validate_role( $message['role'] ?? self::$default_role, $prompt_name ); |
| 504 |
|
| 505 |
// Validate and normalize content. |
| 506 |
$content = $message['content'] ?? array(); |
| 507 |
if ( ! is_array( $content ) ) { |
| 508 |
// If content is a string, wrap it as text. |
| 509 |
$content = array( |
| 510 |
'type' => 'text', |
| 511 |
'text' => is_string( $content ) ? $content : (string) $content, |
| 512 |
); |
| 513 |
} |
| 514 |
|
| 515 |
$content = $this->validate_content_type( $content, $prompt_name ); |
| 516 |
$content = $this->normalize_content_block( $content ); |
| 517 |
|
| 518 |
return PromptMessage::fromArray( |
| 519 |
array( |
| 520 |
'role' => $role, |
| 521 |
'content' => $content, |
| 522 |
) |
| 523 |
); |
| 524 |
} |
| 525 |
|
| 526 |
/** |
| 527 |
* Bring a caller-supplied content block into the shape the schema DTOs accept. |
| 528 |
* |
| 529 |
* Prompt messages carry the same content blocks tool results do, and reach the wire |
| 530 |
* through the same DTOs, so they carry the same hazard: a `_meta` that would serialize |
| 531 |
* as a JSON array where MCP declares an object. |
| 532 |
* |
| 533 |
* Here the cost is higher than on the tool path. A value the DTO refuses throws, and |
| 534 |
* the catch in get_prompt() turns that into an error response - so a `_meta` that is |
| 535 |
* not an array at all loses the whole prompt rather than the field. It is dropped so |
| 536 |
* that the message survives. |
| 537 |
* |
| 538 |
* @since 0.6.0 |
| 539 |
* |
| 540 |
* @param array $content Content block as the prompt returned it. |
| 541 |
* |
| 542 |
* @return array Content block safe to hand to PromptMessage::fromArray(). |
| 543 |
*/ |
| 544 |
private function normalize_content_block( array $content ): array { |
| 545 |
$block_meta = McpValidator::normalize_meta( $content['_meta'] ?? null ); |
| 546 |
if ( null === $block_meta ) { |
| 547 |
unset( $content['_meta'] ); |
| 548 |
} else { |
| 549 |
$content['_meta'] = $block_meta; |
| 550 |
} |
| 551 |
|
| 552 |
// EmbeddedResource takes its resource contents as given, so a nested block never |
| 553 |
// reaches a DTO that could reject them. This is the only level that inspects them. |
| 554 |
if ( 'resource' === ( $content['type'] ?? '' ) && isset( $content['resource'] ) && is_array( $content['resource'] ) ) { |
| 555 |
$resource = $content['resource']; |
| 556 |
|
| 557 |
$resource_meta = McpValidator::normalize_meta( $resource['_meta'] ?? null ); |
| 558 |
if ( null === $resource_meta ) { |
| 559 |
unset( $resource['_meta'] ); |
| 560 |
} else { |
| 561 |
$resource['_meta'] = $resource_meta; |
| 562 |
} |
| 563 |
$content['resource'] = $resource; |
| 564 |
} |
| 565 |
|
| 566 |
return $content; |
| 567 |
} |
| 568 |
|
| 569 |
/** |
| 570 |
* Validate content type against ContentBlockFactory registry. |
| 571 |
* |
| 572 |
* @since 0.5.0 |
| 573 |
* |
| 574 |
* @param array $content Content array with 'type' key. |
| 575 |
* @param string $prompt_name Prompt name for logging. |
| 576 |
* |
| 577 |
* @return array Validated content array (may be modified if invalid type). |
| 578 |
*/ |
| 579 |
private function validate_content_type( array $content, string $prompt_name ): array { |
| 580 |
$type = $content['type'] ?? null; |
| 581 |
|
| 582 |
// Check if type is missing. |
| 583 |
if ( null === $type || '' === $type ) { |
| 584 |
$this->mcp->get_error_handler()->log( |
| 585 |
'Missing content type in prompt result, defaulting to text', |
| 586 |
array( |
| 587 |
'prompt_name' => $prompt_name, |
| 588 |
), |
| 589 |
'warning' |
| 590 |
); |
| 591 |
|
| 592 |
$text = isset( $content['text'] ) ? (string) $content['text'] : wp_json_encode( $content, JSON_PRETTY_PRINT ); |
| 593 |
|
| 594 |
return array( |
| 595 |
'type' => 'text', |
| 596 |
'text' => false === $text ? '{}' : $text, |
| 597 |
); |
| 598 |
} |
| 599 |
|
| 600 |
// Check if type is valid. |
| 601 |
if ( ! in_array( $type, self::$valid_content_types, true ) ) { |
| 602 |
$this->mcp->get_error_handler()->log( |
| 603 |
'Invalid content type in prompt result, converting to text', |
| 604 |
array( |
| 605 |
'prompt_name' => $prompt_name, |
| 606 |
'invalid_type' => $type, |
| 607 |
'valid_types' => self::$valid_content_types, |
| 608 |
), |
| 609 |
'warning' |
| 610 |
); |
| 611 |
|
| 612 |
// Convert the entire content to a text representation. |
| 613 |
$json_content = wp_json_encode( $content, JSON_PRETTY_PRINT ); |
| 614 |
if ( false === $json_content ) { |
| 615 |
$json_content = '{}'; |
| 616 |
} |
| 617 |
|
| 618 |
return array( |
| 619 |
'type' => 'text', |
| 620 |
'text' => $json_content, |
| 621 |
); |
| 622 |
} |
| 623 |
|
| 624 |
// Type is valid, return content as-is (preserves annotations). |
| 625 |
return $content; |
| 626 |
} |
| 627 |
|
| 628 |
/** |
| 629 |
* Validate role value and apply default if invalid. |
| 630 |
* |
| 631 |
* @since 0.5.0 |
| 632 |
* |
| 633 |
* @param string $role Role value to validate. |
| 634 |
* @param string $prompt_name Prompt name for logging (empty to skip logging). |
| 635 |
* |
| 636 |
* @return string Valid role value. |
| 637 |
*/ |
| 638 |
private function validate_role( string $role, string $prompt_name ): string { |
| 639 |
if ( in_array( $role, self::$valid_roles, true ) ) { |
| 640 |
return $role; |
| 641 |
} |
| 642 |
|
| 643 |
if ( '' !== $prompt_name ) { |
| 644 |
$this->mcp->get_error_handler()->log( |
| 645 |
'Invalid role in prompt message, defaulting to user', |
| 646 |
array( |
| 647 |
'prompt_name' => $prompt_name, |
| 648 |
'invalid_role' => $role, |
| 649 |
'valid_roles' => self::$valid_roles, |
| 650 |
), |
| 651 |
'warning' |
| 652 |
); |
| 653 |
} |
| 654 |
|
| 655 |
return self::$default_role; |
| 656 |
} |
| 657 |
} |
| 658 |
|
