<?php

/**
* Plugin Name: AI Text to Speech
* Description: Easily generate a realistic audio version for your content and posts using OpenAI's Text to Speech API.
* Version: 3.3.0
* Author: Elliot Sowersby, RelyWP
* Author URI: https://relywp.com
* License: GPLv3
* Text Domain: ai-text-to-speech
* Domain Path: /languages
*
*/
if ( !defined( 'ABSPATH' ) ) {
    exit;
}
/* Freemius */
if ( function_exists( 'aitts_fs' ) ) {
    aitts_fs()->set_basename( false, __FILE__ );
} else {
    if ( !function_exists( 'aitts_fs' ) ) {
        // Create a helper function for easy SDK access.
        function aitts_fs() {
            global $aitts_fs;
            if ( !isset( $aitts_fs ) ) {
                // Include Freemius SDK.
                require_once __DIR__ . '/freemius/start.php';
                $aitts_fs = fs_dynamic_init( array(
                    'id'               => '14778',
                    'slug'             => 'ai-text-to-speech',
                    'premium_slug'     => 'ai-text-to-speech-pro',
                    'type'             => 'plugin',
                    'public_key'       => 'pk_29ce6983a9bad27c0fda5e4370067',
                    'is_premium'       => false,
                    'premium_suffix'   => 'Pro',
                    'has_addons'       => false,
                    'has_paid_plans'   => true,
                    'is_org_compliant' => true,
                    'menu'             => array(
                        'slug'       => 'ai-text-to-speech',
                        'first-path' => 'admin.php?page=ai-text-to-speech-settings',
                        'account'    => true,
                        'support'    => true,
                        'contact'    => true,
                        'pricing'    => true,
                        'addons'     => false,
                    ),
                    'is_live'          => true,
                ) );
            }
            return $aitts_fs;
        }

        // Init Freemius.
        aitts_fs();
        // Signal that SDK was initiated.
        do_action( 'aitts_fs_loaded' );
    }
    // Redirect the Freemius pricing page to the external pricing page
    add_action( 'admin_init', 'ai_tts_redirect_pricing_page' );
    function ai_tts_redirect_pricing_page() {
        $page = ( isset( $_GET['page'] ) ? sanitize_text_field( wp_unslash( $_GET['page'] ) ) : '' );
        if ( $page === 'ai-text-to-speech-pricing' ) {
            wp_safe_redirect( 'https://relywp.com/plugins/ai-text-to-speech/#pricing' );
            exit;
        }
    }

    // Plugin version, used to bust the browser cache of scripts and styles
    define( 'AI_TTS_VERSION', '3.3.0' );
    // Define the path for the uploads
    define( 'AI_TTS_UPLOAD_DIR', WP_CONTENT_DIR . '/uploads/ai-text-to-speech/' );
    // Includes
    require_once plugin_dir_path( __FILE__ ) . 'inc/save.php';
    require_once plugin_dir_path( __FILE__ ) . 'inc/delete.php';
    require_once plugin_dir_path( __FILE__ ) . 'inc/attach.php';
    require_once plugin_dir_path( __FILE__ ) . 'inc/player.php';
    require_once plugin_dir_path( __FILE__ ) . 'inc/meta-box.php';
    require_once plugin_dir_path( __FILE__ ) . 'inc/options.php';
    require_once plugin_dir_path( __FILE__ ) . 'inc/admin-page.php';
    require_once plugin_dir_path( __FILE__ ) . 'inc/logs.php';
    require_once plugin_dir_path( __FILE__ ) . 'inc/tts-files.php';
    // Includes (Content Generation)
    require_once plugin_dir_path( __FILE__ ) . 'inc/content/generate.php';
    require_once plugin_dir_path( __FILE__ ) . 'inc/content/jobs.php';
    require_once plugin_dir_path( __FILE__ ) . 'inc/content/language.php';
    require_once plugin_dir_path( __FILE__ ) . 'inc/content/intro.php';
    require_once plugin_dir_path( __FILE__ ) . 'inc/content/replace/twitter.php';
    require_once plugin_dir_path( __FILE__ ) . 'inc/content/replace/numbers.php';
    // Activation hook to create the upload directory
    register_activation_hook( __FILE__, 'ai_tts_create_upload_dir' );
    function ai_tts_create_upload_dir() {
        if ( !file_exists( AI_TTS_UPLOAD_DIR ) ) {
            wp_mkdir_p( AI_TTS_UPLOAD_DIR );
        }
        // Redirect to the settings page only once on activation
        update_option( 'ai_tts_do_activation_redirect', true );
    }

    // Redirect to the settings page on activation
    add_action( 'admin_init', 'ai_tts_redirect' );
    function ai_tts_redirect() {
        if ( get_option( 'ai_tts_do_activation_redirect', false ) ) {
            delete_option( 'ai_tts_do_activation_redirect' );
            wp_safe_redirect( admin_url( 'admin.php?page=ai-text-to-speech-settings' ) );
            exit;
        }
    }

    // Add settings link to plugins list
    add_filter( 'plugin_action_links_' . plugin_basename( __FILE__ ), 'ai_tts_settings_link' );
    function ai_tts_settings_link(  $links  ) {
        $settings_link = '<a href="admin.php?page=ai-text-to-speech-settings">' . esc_html__( 'Settings', 'ai-text-to-speech' ) . '</a>';
        array_unshift( $links, $settings_link );
        $analytics_link = '<a href="admin.php?page=ai-text-to-speech-stats">' . esc_html__( 'Statistics', 'ai-text-to-speech' ) . '</a>';
        array_unshift( $links, $analytics_link );
        return $links;
    }

    // Register the audio generation script (shared by the post editor and the Generator page)
    add_action( 'admin_enqueue_scripts', 'ai_tts_register_generate_script', 5 );
    function ai_tts_register_generate_script() {
        wp_register_script(
            'ai-tts-generate',
            plugin_dir_url( __FILE__ ) . 'js/generate.js',
            array('jquery'),
            AI_TTS_VERSION,
            true
        );
        wp_localize_script( 'ai-tts-generate', 'aiTtsGenerateSettings', array(
            'ajaxUrl' => admin_url( 'admin-ajax.php' ),
            'i18n'    => array(
                'generating'  => __( 'Generating audio file...', 'ai-text-to-speech' ),
                'progress'    => __( 'Generating audio file (part %1$s of %2$s)...', 'ai-text-to-speech' ),
                'saving'      => __( 'Saving audio file...', 'ai-text-to-speech' ),
                'timeout'     => __( 'The server took too long to respond. Please ask your web host to increase the PHP max_execution_time and any server or proxy timeout limits (for example to 300 seconds), then try again.', 'ai-text-to-speech' ),
                'serverError' => __( 'The server returned an error (HTTP %s). The Error Log on the plugin settings page may have more details.', 'ai-text-to-speech' ),
                'invalid'     => __( 'The server returned an invalid response.', 'ai-text-to-speech' ),
                'network'     => __( 'Could not connect to the server. Please check your internet connection and try again.', 'ai-text-to-speech' ),
                'unknown'     => __( 'Unknown error occurred.', 'ai-text-to-speech' ),
            ),
        ) );
    }

    // Enqueue JavaScript Admin
    add_action( 'admin_enqueue_scripts', 'ai_tts_enqueue_scripts' );
    function ai_tts_enqueue_scripts() {
        $screen = ( function_exists( 'get_current_screen' ) ? get_current_screen() : null );
        // Only on post edit screens
        if ( !$screen || 'post' !== $screen->base ) {
            return;
        }
        // On all post type post edit screen
        global $post;
        $post_types_option = ai_tts_get_option( 'post_types' );
        if ( 'all' !== $post_types_option ) {
            $the_types = ai_tts_get_option( 'post_types_to_enable' );
            if ( !is_array( $the_types ) ) {
                $the_types = array();
            }
            $post_type = ( isset( $post->post_type ) ? $post->post_type : '' );
            if ( !$post_type ) {
                return;
            }
            if ( !in_array( $post_type, $the_types, true ) ) {
                return;
            }
        }
        // Ensure media modal is available for selecting/uploading audio
        if ( function_exists( 'wp_enqueue_media' ) ) {
            wp_enqueue_media();
        }
        wp_enqueue_script(
            'ai-tts-script',
            plugin_dir_url( __FILE__ ) . 'js/script.js',
            array('jquery', 'ai-tts-generate'),
            AI_TTS_VERSION,
            true
        );
        // The cost estimate and automatic generation use the block editor's data store
        if ( !$screen->is_block_editor() ) {
            return;
        }
        wp_enqueue_script(
            'ai-tts-post-script',
            plugin_dir_url( __FILE__ ) . 'js/post.js',
            array('wp-data'),
            AI_TTS_VERSION,
            true
        );
    }

    // Enqueue JavaScript on Settings Page
    add_action( 'admin_enqueue_scripts', 'ai_tts_enqueue_scripts_settings' );
    function ai_tts_enqueue_scripts_settings() {
        $page = ( isset( $_GET['page'] ) ? sanitize_text_field( wp_unslash( $_GET['page'] ) ) : '' );
        // Only on the plugin settings page
        if ( !$page || !in_array( $page, array('ai-text-to-speech', 'ai-text-to-speech-settings'), true ) ) {
            return;
        }
        wp_enqueue_style( 'wp-color-picker' );
        wp_enqueue_script(
            'ai-tts-settings-script',
            plugin_dir_url( __FILE__ ) . 'js/settings.js',
            array('jquery', 'wp-color-picker'),
            AI_TTS_VERSION,
            true
        );
    }

    // Enqueue Admin Posts CSS
    add_action( 'admin_enqueue_scripts', 'ai_tts_enqueue_posts_styles' );
    function ai_tts_enqueue_posts_styles() {
        // On all post type post edit screen
        global $post;
        $post_types_option = ai_tts_get_option( 'post_types' );
        if ( 'all' !== $post_types_option ) {
            $the_types = ai_tts_get_option( 'post_types_to_enable' );
            if ( !is_array( $the_types ) ) {
                $the_types = array();
            }
            $post_type = ( isset( $post->post_type ) ? $post->post_type : '' );
            if ( !$post_type ) {
                return;
            }
            if ( !in_array( $post_type, $the_types, true ) ) {
                return;
            }
        }
        if ( !is_object( $post ) ) {
            return;
        }
        wp_enqueue_style(
            'ai-tts-style',
            plugin_dir_url( __FILE__ ) . 'css/post.css',
            array(),
            AI_TTS_VERSION
        );
    }

    // Enqueue CSS admin settings page
    add_action( 'admin_enqueue_scripts', 'ai_tts_enqueue_styles_admin' );
    function ai_tts_enqueue_styles_admin() {
        $page = ( isset( $_GET['page'] ) ? sanitize_text_field( wp_unslash( $_GET['page'] ) ) : '' );
        // Only on the plugin admin pages
        if ( !$page || !in_array( $page, array(
            'ai-text-to-speech',
            'ai-text-to-speech-settings',
            'ai-text-to-speech-api-logs',
            'ai-text-to-speech-stats',
            'ai-text-to-speech-files'
        ), true ) ) {
            return;
        }
        wp_enqueue_style(
            'ai-tts-style-admin',
            plugin_dir_url( __FILE__ ) . 'css/settings.css',
            array(),
            AI_TTS_VERSION
        );
    }

}