<?php
/**
 * Settings Page Controller.
 *
 * Handles the main settings page rendering and management.
 *
 * @package Accessibility_Audio_TTS_Player
 * @subpackage Admin\Controllers
 * @since 1.0.0
 */

namespace Accessibility_Audio_TTS\Admin;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Settings Page Controller class.
 *
 * @since 1.0.0
 */
class Settings_Page_Controller extends Abstract_Admin_Controller {

	/**
	 * Settings handler.
	 *
	 * @since 1.0.0
	 * @var Admin_Settings_Handler
	 */
	private Admin_Settings_Handler $settings_handler;

	/**
	 * Message manager.
	 *
	 * @since 1.0.0
	 * @var Admin_Message_Manager
	 */
	private Admin_Message_Manager $message_manager;

	/**
	 * Page renderer.
	 *
	 * @since 1.0.0
	 * @var Admin_Page_Renderer
	 */
	private Admin_Page_Renderer $page_renderer;

	/**
	 * Constructor.
	 *
	 * @since 1.0.0
	 * @param Admin_Settings_Handler|null $settings_handler Settings handler.
	 * @param Admin_Message_Manager|null  $message_manager  Message manager.
	 * @param Admin_Page_Renderer|null    $page_renderer    Page renderer.
	 */
	public function __construct(
		?Admin_Settings_Handler $settings_handler = null,
		?Admin_Message_Manager $message_manager = null,
		?Admin_Page_Renderer $page_renderer = null
	) {
		$this->settings_handler = $settings_handler ?? new Admin_Settings_Handler();
		$this->message_manager  = $message_manager ?? new Admin_Message_Manager();
		$this->page_renderer    = $page_renderer ?? new Admin_Page_Renderer();

		// Set page properties.
		$this->page_slug  = 'accessibility-audio-tts';
		$this->page_title = __( 'Accessibility Audio TTS', 'accessibility-audio-tts-text-to-speech-for-articles' );
		$this->menu_title = __( 'A11y Audio TTS', 'accessibility-audio-tts-text-to-speech-for-articles' );
		$this->capability = 'manage_options';

		parent::__construct();
	}

	/**
	 * Add admin menu.
	 *
	 * @since 1.0.0
	 * @return void
	 */
	public function add_admin_menu(): void {
		// Disabled to prevent duplicate menu & rendering; Admin_Page_Controller owns the page now.
	}

	/**
	 * Render settings page.
	 *
	 * @since 1.0.0
	 * @return void
	 */
	public function render_page(): void {
		// Disabled to avoid duplicate UI; Admin_Page_Controller renders the page.
	}

	/**
	 * Register settings.
	 *
	 * @since 1.0.0
	 * @return void
	 */
	protected function register_settings(): void {
		// Settings are handled by the settings handler.
		// This method is required by the abstract class.
	}

	/**
	 * Enqueue scripts.
	 *
	 * @since 1.0.0
	 * @return void
	 */
	protected function enqueue_scripts(): void {
		wp_enqueue_script(
			'accessibility-audio-tts-audio-admin-settings',
			ACCESSIBILITY_AUDIO_TTS_PLUGIN_URL . 'assets/admin/main/admin-main.min.js',
			array( 'jquery' ),
			accessibility_audio_tts_get_asset_version( 'assets/admin/main/admin-main.min.js' ),
			true
		);

		wp_localize_script(
			'accessibility-audio-tts-audio-admin-settings',
			'accessibilityAudioTtsAdmin',
			array(
				'ajaxUrl' => admin_url( 'admin-ajax.php' ),
				'nonce'   => wp_create_nonce( 'accessibility_audio_tts_admin_nonce' ),
				'strings' => array(
					'saving' => __( 'Saving...', 'accessibility-audio-tts-text-to-speech-for-articles' ),
					'saved'  => __( 'Settings saved!', 'accessibility-audio-tts-text-to-speech-for-articles' ),
					'error'  => __( 'Error saving settings', 'accessibility-audio-tts-text-to-speech-for-articles' ),
				),
			)
		);
	}

	/**
	 * Enqueue styles.
	 *
	 * @since 1.0.0
	 * @return void
	 */
	protected function enqueue_styles(): void {
		wp_enqueue_style(
			'accessibility-audio-tts-audio-admin-settings',
			ACCESSIBILITY_AUDIO_TTS_PLUGIN_URL . 'assets/admin/admin-compiled.min.css',
			array(),
			accessibility_audio_tts_get_asset_version( 'assets/admin/admin-compiled.min.css' )
		);
	}

	/**
	 * Prepare template variables.
	 *
	 * @since 1.0.0
	 * @return array Template variables.
	 */
	private function prepare_template_variables(): array {
		$settings = $this->settings_handler->get_saved_settings();

		return array(
			'saved_api_key'         => $settings['api_key'],
			'saved_voices'          => $settings['voices'],
			'saved_voice_id'        => $settings['voice_id'],
			'saved_voice_name'      => $settings['voice_name'],
			'saved_model'           => $settings['model'],
			'saved_mode'            => $settings['mode'],
			'saved_post_types'      => $settings['post_types'],
			'all_post_types'        => get_post_types( array( 'public' => true ), 'objects' ),
			'saved_chatgpt_api_key' => get_option( 'accessibility_audio_tts_chatgpt_api_key', '' ),
			'saved_chatgpt_prompt'  => get_option( 'accessibility_audio_tts_chatgpt_prompt', '' ),
		);
	}

	/**
	 * Render settings form.
	 *
	 * @since 1.0.0
	 * @param array $template_vars Template variables.
	 * @return void
	 */
	private function render_settings_form( array $template_vars ): void {
		// Include the settings template.
		$template_path = __DIR__ . '/../templates/admin-page-settings.php';
		if ( file_exists( $template_path ) ) {
			// Avoid extract(); pass variables explicitly.
			$saved_api_key         = $template_vars['saved_api_key'] ?? '';
			$saved_voices          = $template_vars['saved_voices'] ?? array();
			$saved_voice_id        = $template_vars['saved_voice_id'] ?? '';
			$saved_voice_name      = $template_vars['saved_voice_name'] ?? '';
			$saved_model           = $template_vars['saved_model'] ?? '';
			$saved_mode            = $template_vars['saved_mode'] ?? '';
			$saved_post_types      = $template_vars['saved_post_types'] ?? array();
			$all_post_types        = $template_vars['all_post_types'] ?? array();
			$saved_chatgpt_api_key = $template_vars['saved_chatgpt_api_key'] ?? '';
			$saved_chatgpt_prompt  = $template_vars['saved_chatgpt_prompt'] ?? '';
			include $template_path;
		}
	}

	/**
	 * Get admin page URL with optional parameters.
	 *
	 * @since 1.0.0
	 * @param array $params Optional URL parameters.
	 * @return string Admin page URL.
	 */
	public function get_admin_page_url( array $params = array() ): string {
		$url = admin_url( 'admin.php?page=' . $this->page_slug );

		if ( ! empty( $params ) ) {
			$url .= '&' . http_build_query( $params );
		}

		return esc_url( $url );
	}

	/**
	 * Check if current page is settings page.
	 *
	 * @since 1.0.0
	 * @return bool True if on settings page.
	 */
	public function is_settings_page(): bool {
		return isset( $_GET['page'] ) && sanitize_text_field( wp_unslash( $_GET['page'] ) ) === $this->page_slug; // phpcs:ignore WordPress.Security.NonceVerification.Recommended
	}
}