[WIP] feat/489: Add Rewrite Tone feature

.eslintrc.json

@@ -1,4 +1,4 @@
 {
 	"globals": {
 		"wp": "readonly",
 		"jQuery": "readonly",
@@ -23,7 +23,8 @@
 		"React": "readonly",
 		"Block": "readonly",
 		"classifai_term_cleanup_params": "readonly",
-		"classifAISettings": "readonly"
+		"classifAISettings": "readonly",
+		"DOMParser": "readonly"
 	},
 	"rules": {
 		"react/jsx-no-undef": "off"

includes/Classifai/Features/RewriteTone.php

@@ -0,0 +1,251 @@
+<?php
+
+namespace Classifai\Features;
+
+use Classifai\Providers\OpenAI\ChatGPT;
+use Classifai\Services\LanguageProcessing;
+use WP_REST_Server;
+use WP_REST_Request;
+use WP_Error;
+
+use function Classifai\get_asset_info;
+use function Classifai\sanitize_prompts;
+
+/**
+ * Class RewriteTone
+ */
+class RewriteTone extends Feature {
+	/**
+	 * ID of the current feature.
+	 *
+	 * @var string
+	 */
+	const ID = 'feature_rewrite_tone';
+
+	/**
+	 * Constructor.
+	 */
+	public function __construct() {
+		$this->label = __( 'Rewrite Tone', 'classifai' );
+
+		// Contains all providers that are registered to the service.
+		$this->provider_instances = $this->get_provider_instances( LanguageProcessing::get_service_providers() );
+
+		// Contains just the providers this feature supports.
+		$this->supported_providers = [
+			ChatGPT::ID => __( 'OpenAI ChatGPT', 'classifai' ),
+		];
+	}
+
+	/**
+	 * Set up necessary hooks.
+	 *
+	 * We utilize this so we can register the REST route.
+	 */
+	public function setup() {
+		parent::setup();
+		add_action( 'rest_api_init', [ $this, 'register_endpoints' ] );
+	}
+
+	/**
+	 * Set up necessary hooks.
+	 */
+	public function feature_setup() {
+		add_action( 'enqueue_block_assets', [ $this, 'enqueue_editor_assets' ] );
+	}
+
+	/**
+	 * Register any needed endpoints.
+	 */
+	public function register_endpoints() {
+		register_rest_route(
+			'classifai/v1',
+			'rewrite-tone',
+			[
+				'methods'             => WP_REST_Server::CREATABLE,
+				'callback'            => [ $this, 'rest_endpoint_callback' ],
+				'permission_callback' => '__return_true',
+				'args'                => [
+					'id'      => [
+						'required'          => true,
+						'type'              => 'integer',
+						'sanitize_callback' => 'absint',
+						'description'       => esc_html__( 'Post ID to resize the content for.', 'classifai' ),
+					],
+					'content' => [
+						'type'              => 'array',
+						'sanitize_callback' => function ( $content_array ) {
+							if ( is_array( $content_array ) ) {
+								return array_map(
+									function ( $item ) {
+										$item['clientId'] = sanitize_text_field( $item['clientId'] );
+										$item['content']  = wp_kses_post( $item['content'] );
+										return $item;
+									},
+									$content_array
+								);
+							}
+
+							return [];
+						},
+						'validate_callback' => function ( $content_array ) {
+							if ( is_array( $content_array ) ) {
+								foreach ( $content_array as $item ) {
+									if ( ! isset( $item['clientId'] ) || ! is_string( $item['clientId'] ) ) {
+										return new WP_Error( 'rewrite_tone_invalid_client_id', __( 'Each item must have a valid clientId string.', 'classifai' ), [ 'status' => 400 ] );
+									}
+
+									if ( ! isset( $item['content'] ) || ! is_string( $item['content'] ) ) {
+										return new WP_Error( 'rewrite_tone_invalid_content', __( 'Each item must have valid content as a string.', 'classifai' ), [ 'status' => 400 ] );
+									}
+								}
+								return true;
+							}
+							return new WP_Error( 'rewrite_tone_invalid_data_format', __( 'Content must be an array of objects.', 'classifai' ), [ 'status' => 400 ] );
+						},
+						'description'       => esc_html__( 'The content to resize.', 'classifai' ),
+					],
+				],
+			]
+		);
+	}
+
+	/**
+	 * Check if a given request has access to resize content.
+	 *
+	 * @param WP_REST_Request $request Full data about the request.
+	 * @return WP_Error|bool
+	 */
+	public function resize_content_permissions_check( WP_REST_Request $request ) {
+		$post_id = $request->get_param( 'id' );
+
+		// Ensure we have a logged in user that can edit the item.
+		if ( empty( $post_id ) || ! current_user_can( 'edit_post', $post_id ) ) {
+			return false;
+		}
+
+		$post_type     = get_post_type( $post_id );
+		$post_type_obj = get_post_type_object( $post_type );
+
+		// Ensure the post type is allowed in REST endpoints.
+		if ( ! $post_type || empty( $post_type_obj ) || empty( $post_type_obj->show_in_rest ) ) {
+			return false;
+		}
+
+		// Ensure the feature is enabled. Also runs a user check.
+		if ( ! $this->is_feature_enabled() ) {
+			return new WP_Error( 'not_enabled', esc_html__( 'Rewrite Tone is not currently enabled.', 'classifai' ) );
+		}
+
+		return true;
+	}
+
+	/**
+	 * Generic request handler for all our custom routes.
+	 *
+	 * @param WP_REST_Request $request The full request object.
+	 * @return \WP_REST_Response
+	 */
+	public function rest_endpoint_callback( WP_REST_Request $request ) {
+		$route = $request->get_route();
+
+		if ( strpos( $route, '/classifai/v1/rewrite-tone' ) === 0 ) {
+			return rest_ensure_response(
+				$this->run(
+					$request->get_param( 'id' ),
+					'rewrite_tone',
+					[
+						'content'   => $request->get_param( 'content' ),
+						'emotion'   => $request->get_param( 'emotion' ),
+						'formality' => $request->get_param( 'formality' ),
+						'intent'    => $request->get_param( 'intent' ),
+						'audience'  => $request->get_param( 'audience' ),
+					]
+				)
+			);
+		}
+
+		return parent::rest_endpoint_callback( $request );
+	}
+
+	/**
+	 * Enqueue the editor scripts.
+	 */
+	public function enqueue_editor_assets() {
+		global $post;
+
+		if ( empty( $post ) || ! is_admin() ) {
+			return;
+		}
+
+		wp_enqueue_script(
+			'classifai-plugin-rewrite-tone-js',
+			CLASSIFAI_PLUGIN_URL . 'dist/classifai-plugin-rewrite-tone.js',
+			array_merge(
+				get_asset_info( 'classifai-plugin-rewrite-tone', 'dependencies' ),
+				array( Feature::PLUGIN_AREA_SCRIPT )
+			),
+			get_asset_info( 'classifai-plugin-rewrite-tone', 'version' ),
+			true
+		);
+	}
+
+	/**
+	 * Get the description for the enable field.
+	 *
+	 * @return string
+	 */
+	public function get_enable_description(): string {
+		return esc_html__( '"Condense this text" and "Expand this text" menu items will be added to the paragraph block\'s toolbar menu.', 'classifai' );
+	}
+
+	/**
+	 * Add any needed custom fields.
+	 */
+	public function add_custom_settings_fields() {
+		$settings = $this->get_settings();
+
+		add_settings_field(
+			'rewrite_tone_prompt',
+			esc_html__( 'Prompt', 'classifai' ),
+			[ $this, 'render_prompt_repeater_field' ],
+			$this->get_option_name(),
+			$this->get_option_name() . '_section',
+			[
+				'label_for'     => 'rewrite_tone_prompt',
+				'placeholder'   => $this->prompt,
+				'default_value' => $settings['rewrite_tone_prompt'],
+				'description'   => esc_html__( 'Add a custom prompt, if desired.', 'classifai' ),
+			]
+		);
+	}
+
+	/**
+	 * Returns the default settings for the feature.
+	 *
+	 * @return array
+	 */
+	public function get_feature_default_settings(): array {
+		return [
+			'rewrite_tone_prompt' => [
+				[
+					'title'    => esc_html__( 'ClassifAI default', 'classifai' ),
+					'original' => 1,
+				],
+			],
+			'provider'            => ChatGPT::ID,
+		];
+	}
+
+	/**
+	 * Sanitizes the default feature settings.
+	 *
+	 * @param array $new_settings Settings being saved.
+	 * @return array
+	 */
+	public function sanitize_default_feature_settings( array $new_settings ): array {
+		$new_settings['rewrite_tone_prompt'] = sanitize_prompts( 'rewrite_tone_prompt', $new_settings );
+
+		return $new_settings;
+	}
+}

includes/Classifai/Providers/OpenAI/ChatGPT.php

@@ -14,6 +14,7 @@
 use Classifai\Features\KeyTakeaways;
 use Classifai\Providers\Provider;
 use Classifai\Normalizer;
+use Classifai\Features\RewriteTone;
 use WP_Error;
 
 use function Classifai\get_default_prompt;
@@ -200,7 +201,7 @@ public function sanitize_api_key( array $new_settings ): string {
 	 */
 	public function rest_endpoint_callback( $post_id = 0, string $route_to_call = '', array $args = [] ) {
 		if ( ! $post_id || ! get_post( $post_id ) ) {
-			return new WP_Error( 'post_id_required', esc_html__( 'A valid post ID is required to generate an excerpt.', 'classifai' ) );
+			return new WP_Error( 'post_id_required', esc_html__( 'A valid post ID is required.', 'classifai' ) );
 		}
 
 		$route_to_call = strtolower( $route_to_call );
@@ -224,6 +225,9 @@ public function rest_endpoint_callback( $post_id = 0, string $route_to_call = ''
 			case 'resize_content':
 				$return = $this->resize_content( $post_id, $args );
 				break;
+			case 'rewrite_tone':
+				$return = $this->rewrite_tone( $post_id, $args );
+				break;
 			case 'key_takeaways':
 				$return = $this->generate_key_takeaways( $post_id, $args );
 				break;
@@ -870,6 +874,75 @@ public function resize_content( int $post_id, array $args = array() ) {
 		return $return;
 	}
 
+	/**
+	 * Rewrite the tone of the content.
+	 *
+	 * @param int   $post_id The Post Id we're processing
+	 * @param array $args Arguments passed in.
+	 */
+	public function rewrite_tone( int $post_id, array $args = [] ) {
+		$feature  = new RewriteTone();
+		$settings = $feature->get_settings();
+		$request  = new APIRequest( $settings[ static::ID ]['api_key'] ?? '', $feature->get_option_name() );
+
+		$emotion   = sanitize_text_field( $args['emotion'] ?? 'happy' );
+		$formality = sanitize_text_field( $args['formality'] ?? 'formal' );
+		$intent    = sanitize_text_field( $args['intent'] ?? 'storytelling' );
+		$audience  = sanitize_text_field( $args['audience'] ?? 'general' );
+		$prompt    = "Rewrite the following content with the following tone attributes: Emotion: {$emotion}, Formality: {$formality}, Intent: {$intent}, Audience: {$audience}. Ensure that the rewritten content aligns with the selected attributes. Keep it {$formality} and make it {$intent}. The tone should reflect a {$emotion} sentiment while ensuring it resonates well with a {$audience} audience.";
+
+		$body = apply_filters(
+			'classifai_chatgpt_resize_content_request_body',
+			[
+				'model'    => $this->chatgpt_model,
+				'messages' => [
+					[
+						'role'    => 'system',
+						'content' => $prompt,
+					],
+					[
+						'role'    => 'system',
+						'content' => "Rewrite the above content while maintaining its original meaning but transforming it according to the specified tone attributes.",
+					],
+					[
+						'role'    => 'system',
+						'content' => "Please return each modified content with its corresponding 'clientId'. This is extremely important.",
+					],
+					[
+						'role'    => 'system',
+						'content' => 'The inline styles and HTML attributes should be preserved in the response.',
+					],
+					[
+						'role'    => 'system',
+						'content' => 'The HTML in the input should be preserved in the response.',
+					],
+					[
+						'role'    => 'user',
+						'content' => wp_json_encode( $args['content'] ),
+					],
+				],
+			],
+		);
+
+		$response = $request->post(
+			$this->chatgpt_url,
+			[
+				'body' => wp_json_encode( $body ),
+			]
+		);
+
+		$return = [];
+
+		foreach ( $response['choices'] as $choice ) {
+			if ( isset( $choice['message'], $choice['message']['content'] ) ) {
+				// ChatGPT often adds quotes to strings, so remove those as well as extra spaces.
+				$return[] = trim( $choice['message']['content'], ' "\'' );
+			}
+		}
+
+		return $return;
+	}
+
 	/**
 	 * Generate key takeaways from content.
 	 *

includes/Classifai/Services/ServicesManager.php

@@ -77,6 +77,7 @@ public function register_language_processing_features( array $features ): array
 			'\Classifai\Features\TitleGeneration',
 			'\Classifai\Features\ExcerptGeneration',
 			'\Classifai\Features\ContentResizing',
+			'\Classifai\Features\RewriteTone',
 			'\Classifai\Features\KeyTakeaways',
 			'\Classifai\Features\TextToSpeech',
 			'\Classifai\Features\AudioTranscriptsGeneration',