<?php
/**
 * Media Page functionality of the plugin.
 *
 * @package    QDR_Temporary_Shared_Storage
 * @since      1.0.0
 */
class QDR_TSS_Media_Page {

    /**
     * The ID of this plugin.
     *
     * @since    1.0.0
     * @access   private
     * @var      string    $plugin_name    The ID of this plugin.
     */
    private $plugin_name;

    /**
     * The version of this plugin.
     *
     * @since    1.0.0
     * @access   private
     * @var      string    $version    The current version of this plugin.
     */
    private $version;

    /**
     * The database manager instance.
     *
     * @since    1.0.0
     * @access   private
     * @var      QDR_TSS_DB_Manager    $db_manager    The database manager instance.
     */
    private $db_manager;

    /**
     * The file manager instance.
     *
     * @since    1.0.0
     * @access   private
     * @var      QDR_TSS_File_Manager    $file_manager    The file manager instance.
     */
    private $file_manager;

    /**
     * Initialize the class and set its properties.
     *
     * @since    1.0.0
     * @param    string    $plugin_name    The name of this plugin.
     * @param    string    $version        The version of this plugin.
     */
    public function __construct($plugin_name, $version) {
        $this->plugin_name = $plugin_name;
        $this->version = $version;
        $this->db_manager = QDR_TSS_DB_Manager::instance();
        $this->file_manager = QDR_TSS_File_Manager::instance();
    }

    /**
     * AJAX handler for getting items.
     *
     * @since    1.0.0
     */
    public function ajax_get_items() {
        // Check nonce
        if (!isset($_POST['nonce']) || !wp_verify_nonce($_POST['nonce'], 'qdr_tss_nonce')) {
            wp_send_json_error(array('message' => __('Security check failed.', 'qdr-temporary-shared-storage')));
        }
        
        // Parse parameters
        $args = array(
            'per_page' => isset($_POST['per_page']) ? intval($_POST['per_page']) : 10,
            'page' => isset($_POST['page']) ? intval($_POST['page']) : 1,
            'orderby' => isset($_POST['orderby']) ? sanitize_text_field($_POST['orderby']) : 'upload_date',
            'order' => isset($_POST['order']) ? sanitize_text_field($_POST['order']) : 'DESC',
            'original_file_name' => isset($_POST['original_file_name']) ? sanitize_text_field($_POST['original_file_name']) : '',
            'reference' => isset($_POST['reference']) ? sanitize_text_field($_POST['reference']) : '',
        );
        
        $result = $this->db_manager->get_items($args);
        
        wp_send_json_success($result);
    }

    /**
     * AJAX handler for editing an item.
     *
     * @since    1.0.0
     */
    public function ajax_edit_item() {
        // Check nonce
        if (!isset($_POST['nonce']) || !wp_verify_nonce($_POST['nonce'], 'qdr_tss_nonce')) {
            wp_send_json_error(array('message' => __('Security check failed.', 'qdr-temporary-shared-storage')));
        }
        
        // Check required parameters
        if (!isset($_POST['id']) || empty($_POST['id'])) {
            wp_send_json_error(array('message' => __('Missing item ID.', 'qdr-temporary-shared-storage')));
        }
        
        $id = intval($_POST['id']);
        
        // Get the item
        $item = $this->db_manager->get_item($id);
        if (!$item) {
            wp_send_json_error(array('message' => __('Item not found.', 'qdr-temporary-shared-storage')));
        }
        
        // Prepare update data
        $data = array();
        
        if (isset($_POST['description'])) {
            $data['description'] = sanitize_textarea_field($_POST['description']);
        }
        
        if (isset($_POST['message'])) {
            $data['message'] = sanitize_textarea_field($_POST['message']);
        }
        
        if (isset($_POST['active_from'])) {
            $data['active_from'] = sanitize_text_field($_POST['active_from']);
        }
        
        if (isset($_POST['active_to'])) {
            $data['active_to'] = sanitize_text_field($_POST['active_to']);
        }
        
        if (isset($_POST['reference'])) {
            $data['reference'] = sanitize_text_field($_POST['reference']);
        }
        
        if (empty($data)) {
            wp_send_json_error(array('message' => __('No changes to update.', 'qdr-temporary-shared-storage')));
        }
        
        // Update in database
        $result = $this->db_manager->update_item($id, $data);
        
        if ($result === false) {
            wp_send_json_error(array('message' => __('Failed to update item.', 'qdr-temporary-shared-storage')));
        }
        
        // Get updated record
        $updated_item = $this->db_manager->get_item($id);
        
        wp_send_json_success(array(
            'item' => $updated_item,
            'message' => __('Item updated successfully.', 'qdr-temporary-shared-storage')
        ));
    }

    /**
     * AJAX handler for deleting an item.
     *
     * @since    1.0.0
     */
    public function ajax_delete_item() {
        // Check nonce
        if (!isset($_POST['nonce']) || !wp_verify_nonce($_POST['nonce'], 'qdr_tss_nonce')) {
            wp_send_json_error(array('message' => __('Security check failed.', 'qdr-temporary-shared-storage')));
        }
        
        // Check required parameters
        if (!isset($_POST['id']) || empty($_POST['id'])) {
            wp_send_json_error(array('message' => __('Missing item ID.', 'qdr-temporary-shared-storage')));
        }
        
        $id = intval($_POST['id']);
        
        // Get the item
        $item = $this->db_manager->get_item($id);
        if (!$item) {
            wp_send_json_error(array('message' => __('Item not found.', 'qdr-temporary-shared-storage')));
        }
        
        // Delete file
        $this->file_manager->delete_file($item->file_path);
        
        // Delete from database
        $result = $this->db_manager->delete_item($id);
        
        if ($result === false) {
            wp_send_json_error(array('message' => __('Failed to delete item.', 'qdr-temporary-shared-storage')));
        }
        
        wp_send_json_success(array(
            'message' => __('Item deleted successfully.', 'qdr-temporary-shared-storage')
        ));
    }

    /**
     * AJAX handler for getting item details.
     *
     * @since    1.0.0
     */
    public function ajax_get_item_details() {
        // Check nonce
        if (!isset($_POST['nonce']) || !wp_verify_nonce($_POST['nonce'], 'qdr_tss_nonce')) {
            wp_send_json_error(array('message' => __('Security check failed.', 'qdr-temporary-shared-storage')));
        }
        
        // Check required parameters
        if (!isset($_POST['id']) || empty($_POST['id'])) {
            wp_send_json_error(array('message' => __('Missing item ID.', 'qdr-temporary-shared-storage')));
        }
        
        $id = intval($_POST['id']);
        
        // Get the item
        $item = $this->db_manager->get_item($id);
        if (!$item) {
            wp_send_json_error(array('message' => __('Item not found.', 'qdr-temporary-shared-storage')));
        }
        
        // Add permalink and shortcode
        $item->permalink = site_url('shared-file-download/' . $item->fileid);
        $item->shortcode = '[qdr_tss_download id="' . $item->fileid . '"]';
        
        // Remove password from response
        unset($item->password);
        
        wp_send_json_success(array(
            'item' => $item
        ));
    }

    /**
     * AJAX handler for force activating an item.
     *
     * @since    1.0.0
     */
    public function ajax_force_activate_item() {
        // Check nonce
        if (!isset($_POST['nonce']) || !wp_verify_nonce($_POST['nonce'], 'qdr_tss_nonce')) {
            wp_send_json_error(array('message' => __('Security check failed.', 'qdr-temporary-shared-storage')));
        }
        
        // Check required parameters
        if (!isset($_POST['id']) || empty($_POST['id'])) {
            wp_send_json_error(array('message' => __('Missing item ID.', 'qdr-temporary-shared-storage')));
        }
        
        $id = intval($_POST['id']);
        
        // Get the item
        $item = $this->db_manager->get_item($id);
        if (!$item) {
            wp_send_json_error(array('message' => __('Item not found.', 'qdr-temporary-shared-storage')));
        }
        
        // Calculate new dates using absolute difference formula
        $now = current_time('mysql');
        $active_from = new DateTime($item->active_from);
        $active_to = new DateTime($item->active_to);
        
        // Calculate absolute difference in seconds
        $duration_seconds = abs($active_to->getTimestamp() - $active_from->getTimestamp());
        
        // Set new active period starting from now
        $new_active_from = new DateTime($now);
        $new_active_to = clone $new_active_from;
        $new_active_to->add(new DateInterval('PT' . $duration_seconds . 'S'));
        
        // Update in database
        $data = array(
            'active_from' => $new_active_from->format('Y-m-d H:i:s'),
            'active_to' => $new_active_to->format('Y-m-d H:i:s')
        );
        
        $result = $this->db_manager->update_item($id, $data);
        
        if ($result === false) {
            wp_send_json_error(array('message' => __('Failed to force activate item.', 'qdr-temporary-shared-storage')));
        }
        
        wp_send_json_success(array(
            'message' => __('Item has been force activated successfully.', 'qdr-temporary-shared-storage'),
            'new_active_from' => $new_active_from->format('Y-m-d H:i:s'),
            'new_active_to' => $new_active_to->format('Y-m-d H:i:s')
        ));
    }
}