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<?php
declare (strict_types=1);
namespace WordPress\AiClient\Providers\Http\Util;
/**
* Utility for extracting error messages from API response data.
*
* Centralizes the logic for parsing common API error response formats
* to avoid code duplication across exception classes.
*
* @since 0.2.0
* @since 0.4.0 Moved from Utilities namespace to Util namespace.
*/
class ErrorMessageExtractor
{
/**
* Extracts error message from API response data.
*
* Handles common error response formats:
* - { "error": { "message": "Error text" } }
* - { "error": "Error text" }
* - { "message": "Error text" }
*
* @since 0.2.0
*
* @param mixed $data The response data to extract error message from.
* @return string|null The extracted error message, or null if none found.
*/
public static function extractFromResponseData($data): ?string
{
if (!is_array($data)) {
return null;
}
// Handle [ { "error": { "message": "Error text" } } ]
if (isset($data[0]) && is_array($data[0]) && isset($data[0]['error']) && is_array($data[0]['error']) && isset($data[0]['error']['message']) && is_string($data[0]['error']['message'])) {
return $data[0]['error']['message'];
}
// Handle { "error": { "message": "Error text" } }
if (isset($data['error']) && is_array($data['error']) && isset($data['error']['message']) && is_string($data['error']['message'])) {
return $data['error']['message'];
}
// Handle { "error": "Error text" }
if (isset($data['error']) && is_string($data['error'])) {
return $data['error'];
}
// Handle { "message": "Error text" }
if (isset($data['message']) && is_string($data['message'])) {
return $data['message'];
}
return null;
}
}