Add core classes and tests for Groq AI compatibility, logging, and model services

- Implement Groq_AI_Compatibility_Service to manage WooCommerce dependency and admin notices.
- Create Groq_AI_Log_Scheduler for scheduled log cleanup based on settings.
- Develop Groq_AI_Model_Service for model selection and caching.
- Add language translations in POT file for Dutch.
- Set up PHPUnit configuration and bootstrap for testing.
- Implement unit tests for model exclusions, provider request building, settings management, and term saving functionality.

includes/Core/class-groq-ai-ajax-controller.php

@@ -435,9 +435,22 @@ class Groq_AI_Ajax_Controller {
 
 		check_ajax_referer( 'groq_ai_generate', 'nonce' );
 
-		$prompt = isset( $_POST['prompt'] ) ? sanitize_textarea_field( wp_unslash( $_POST['prompt'] ) ) : '';
+		$prompt  = isset( $_POST['prompt'] ) ? sanitize_textarea_field( wp_unslash( $_POST['prompt'] ) ) : '';
 		$post_id = isset( $_POST['post_id'] ) ? absint( $_POST['post_id'] ) : 0;
 
+		if ( ! $post_id ) {
+			wp_send_json_error( [ 'message' => __( 'Post-ID ontbreekt.', GROQ_AI_PRODUCT_TEXT_DOMAIN ) ], 400 );
+		}
+
+		$post = get_post( $post_id );
+		if ( ! $post || is_wp_error( $post ) || 'product' !== $post->post_type ) {
+			wp_send_json_error( [ 'message' => __( 'Product niet gevonden.', GROQ_AI_PRODUCT_TEXT_DOMAIN ) ], 404 );
+		}
+
+		if ( ! current_user_can( 'edit_post', $post_id ) ) {
+			wp_send_json_error( [ 'message' => __( 'Je hebt geen toestemming om dit product te bewerken.', GROQ_AI_PRODUCT_TEXT_DOMAIN ) ], 403 );
+		}
+
 		$settings      = $this->plugin->get_settings();
 		$provider_manager = $this->plugin->get_provider_manager();
 		$provider_key  = $settings['provider'];

includes/Core/class-groq-ai-compatibility-service.php

@@ -0,0 +1,58 @@
+<?php
+
+class Groq_AI_Compatibility_Service {
+	/** @var bool */
+	private $missing_wc_notice = false;
+
+	public function maybe_deactivate_if_woocommerce_missing() {
+		if ( $this->is_woocommerce_active() ) {
+			return;
+		}
+
+		if ( ! function_exists( 'deactivate_plugins' ) ) {
+			require_once ABSPATH . 'wp-admin/includes/plugin.php';
+		}
+
+		deactivate_plugins( plugin_basename( GROQ_AI_PRODUCT_TEXT_FILE ) );
+		$this->missing_wc_notice = true;
+
+		add_action( 'admin_notices', [ $this, 'render_missing_wc_notice' ] );
+	}
+
+	public function render_missing_wc_notice() {
+		if ( ! $this->missing_wc_notice ) {
+			return;
+		}
+		?>
+		<div class="notice notice-error">
+			<p>
+				<?php esc_html_e( 'SitiAI Product Teksten vereist WooCommerce en is gedeactiveerd omdat WooCommerce niet actief is.', GROQ_AI_PRODUCT_TEXT_DOMAIN ); ?>
+			</p>
+		</div>
+		<?php
+	}
+
+	public function is_rankmath_active() {
+		if ( class_exists( 'RankMath' ) ) {
+			return true;
+		}
+
+		if ( ! function_exists( 'is_plugin_active' ) ) {
+			require_once ABSPATH . 'wp-admin/includes/plugin.php';
+		}
+
+		return function_exists( 'is_plugin_active' ) && is_plugin_active( 'seo-by-rank-math/rank-math.php' );
+	}
+
+	public function is_woocommerce_active() {
+		if ( class_exists( 'WooCommerce' ) ) {
+			return true;
+		}
+
+		if ( ! function_exists( 'is_plugin_active' ) ) {
+			require_once ABSPATH . 'wp-admin/includes/plugin.php';
+		}
+
+		return function_exists( 'is_plugin_active' ) && is_plugin_active( 'woocommerce/woocommerce.php' );
+	}
+}

includes/Core/class-groq-ai-log-scheduler.php

@@ -0,0 +1,28 @@
+<?php
+
+class Groq_AI_Log_Scheduler {
+	/** @var Groq_AI_Settings_Manager */
+	private $settings_manager;
+
+	/** @var Groq_AI_Generation_Logger */
+	private $logger;
+
+	public function __construct( Groq_AI_Settings_Manager $settings_manager, Groq_AI_Generation_Logger $logger ) {
+		$this->settings_manager = $settings_manager;
+		$this->logger           = $logger;
+	}
+
+	public function ensure_logs_cleanup_schedule() {
+		if ( wp_next_scheduled( 'groq_ai_cleanup_logs' ) ) {
+			return;
+		}
+
+		wp_schedule_event( time() + HOUR_IN_SECONDS, 'daily', 'groq_ai_cleanup_logs' );
+	}
+
+	public function cleanup_logs() {
+		$settings = $this->settings_manager->all();
+		$retention_days = $this->settings_manager->get_logs_retention_days( $settings );
+		$this->logger->cleanup_old_logs( $retention_days );
+	}
+}

includes/Core/class-groq-ai-model-service.php

@@ -0,0 +1,78 @@
+<?php
+
+class Groq_AI_Model_Service {
+	public function get_selected_model( Groq_AI_Provider_Interface $provider, $settings ) {
+		$provider_key = $provider->get_key();
+		$model        = ! empty( $settings['model'] ) ? $settings['model'] : '';
+		$model        = Groq_AI_Model_Exclusions::ensure_allowed( $provider_key, $model );
+
+		if ( '' === $model ) {
+			$default = Groq_AI_Model_Exclusions::ensure_allowed( $provider_key, $provider->get_default_model() );
+			if ( '' !== $default ) {
+				return $default;
+			}
+
+			$available = Groq_AI_Model_Exclusions::filter_models( $provider_key, $provider->get_available_models() );
+			if ( ! empty( $available ) ) {
+				return $available[0];
+			}
+		}
+
+		return $model;
+	}
+
+	public function get_cached_models_for_provider( $provider ) {
+		$provider = sanitize_key( (string) $provider );
+		$cache    = $this->get_models_cache();
+
+		return isset( $cache[ $provider ] ) ? $cache[ $provider ] : [];
+	}
+
+	public function update_cached_models_for_provider( $provider, $models ) {
+		$provider = sanitize_key( (string) $provider );
+		$models   = $this->sanitize_models_list( $models );
+
+		$cache = $this->get_models_cache();
+		$cache[ $provider ] = $models;
+
+		update_option( Groq_AI_Product_Text_Plugin::MODELS_CACHE_OPTION_KEY, $cache );
+
+		return $models;
+	}
+
+	private function get_models_cache() {
+		$cache = get_option( Groq_AI_Product_Text_Plugin::MODELS_CACHE_OPTION_KEY, [] );
+
+		if ( ! is_array( $cache ) ) {
+			$cache = [];
+		}
+
+		foreach ( $cache as $provider => $models ) {
+			$cache[ $provider ] = $this->sanitize_models_list( $models );
+		}
+
+		return $cache;
+	}
+
+	private function sanitize_models_list( $models ) {
+		if ( ! is_array( $models ) ) {
+			return [];
+		}
+
+		$models = array_map( 'sanitize_text_field', $models );
+		$models = array_filter(
+			$models,
+			function ( $model ) {
+				return '' !== $model;
+			}
+		);
+
+		$models = array_values( array_unique( $models ) );
+
+		if ( ! empty( $models ) ) {
+			sort( $models, SORT_NATURAL | SORT_FLAG_CASE );
+		}
+
+		return $models;
+	}
+}