<?php
/**
 * Save Template REST Endpoint
 *
 * @package Addifect
 * @version 1.0.3
 */

defined( 'ABSPATH' ) || exit;

add_action(
	'rest_api_init',
	function () {
		register_rest_route(
			'addifect-client/v1',
			'/save-template',
			array(
				'methods'             => 'POST',
				'callback'            => 'addifect_save_template_data',
				'permission_callback' => 'addifect_can_edit_designs',
				'args'                => array(
					'design_id'     => array(
						'required'          => true,
						'type'              => 'integer',
						'sanitize_callback' => 'absint',
					),
					'template_id'   => array(
						'required'          => true,
						'type'              => 'string',
						'sanitize_callback' => 'addifect_sanitize_template_id',
					),
					'template_data' => array(
						'required'          => true,
						'type'              => 'object',
						'sanitize_callback' => 'addifect_recursive_sanitize_array',
					),
					'is_part'       => array(
						'required' => false,
						'type'     => 'boolean',
						'default'  => false,
					),
				),
			)
		);
	}
);

/**
 * Save Addifect template data.
 * Updates the Design-specific index in Meta and mirrors it to a high-speed session transient.
 *
 * @param WP_REST_Request $request REST request object.
 * @return WP_REST_Response|WP_Error
 */
function addifect_save_template_data( WP_REST_Request $request ) {
	$design_id   = $request->get_param( 'design_id' );
	$template_id = $request->get_param( 'template_id' );
	$block       = $request->get_param( 'template_data' );
	$is_part     = $request->get_param( 'is_part' );

	if ( empty( $design_id ) ) {
		return new WP_Error(
			'no_design_id',
			'No valid design ID provided.',
			array( 'status' => 400 )
		);
	}

	/**
	 * 1. Update Master Index Meta
	 */
	$master_index = get_post_meta( $design_id, '_addifect_design_index', true );

	if ( ! is_array( $master_index ) ) {
		$master_index = array(
			'parts'    => array(),
			'all_keys' => array(),
		);
	} else {
		// Ensure keys exist if legacy data is structured differently.
		if ( ! isset( $master_index['all_keys'] ) ) {
			$master_index['all_keys'] = array();
		}
		if ( ! isset( $master_index['parts'] ) ) {
			$master_index['parts'] = array();
		}
	}

	// Update keys if they are new.
	if ( ! in_array( $template_id, $master_index['all_keys'], true ) ) {
		$master_index['all_keys'][] = $template_id;
	}

	if ( $is_part && ! in_array( $template_id, $master_index['parts'], true ) ) {
		$master_index['parts'][] = $template_id;
	}

	/**
	 * THE CRITICAL FIX: Update the timestamp every time!
	 * This ensures the browser cache busts on every save.
	 */
	$master_index['updated'] = time();

	update_post_meta( $design_id, '_addifect_design_index', $master_index );

	// Sync the high-speed transient (now with the fresh timestamp).
	set_transient( 'addifect_active_session_index', $master_index, 12 * HOUR_IN_SECONDS );

	/**
	 * 2. Update Master Templates Meta.
	 */
	$all_templates = get_post_meta( $design_id, '_addifect_design_templates', true );

	if ( ! is_array( $all_templates ) ) {
		$all_templates = array();
	}

	$all_templates[ $template_id ] = $block;

	update_post_meta( $design_id, '_addifect_design_templates', wp_slash( $all_templates ) );

	/**
	 * 3. Sync Content Transient
	 */
	set_transient( 'addifect_site_template_' . $template_id, $block, 12 * HOUR_IN_SECONDS );

	// Update Connection Source of Truth.
	update_option(
		'addifect_active_connection',
		array(
			'kit_id'    => null,
			'design_id' => $design_id,
			'last_sync' => time(),
		)
	);

	return new WP_REST_Response(
		array(
			'success' => true,
			'updated' => $master_index['updated'],
		),
		200
	);
}


add_action(
	'rest_api_init',
	function () {
		register_rest_route(
			'addifect-client/v1',
			'/unpublish-template',
			array(
				'methods'             => 'POST',
				'callback'            => 'addifect_unpublish_template_data',
				'permission_callback' => 'addifect_can_edit_designs',
				'args'                => array(
					'design_id'   => array(
						'required'          => true,
						'type'              => 'integer',
						'sanitize_callback' => 'absint',
					),
					'template_id' => array(
						'required'          => true,
						'type'              => 'string',
						'sanitize_callback' => 'addifect_sanitize_template_id',
					),
					'is_part'     => array(
						'required' => false,
						'type'     => 'boolean',
						'default'  => false,
					),
				),
			)
		);
	}
);

/**
 * Unpublish/Delete Addifect template data.
 * Removes the template from the master index, deletes the payload, and busts cache.
 *
 * @param WP_REST_Request $request REST request object.
 */
function addifect_unpublish_template_data( WP_REST_Request $request ) {
	$design_id   = $request->get_param( 'design_id' );
	$template_id = $request->get_param( 'template_id' );
	$is_part     = $request->get_param( 'is_part' );

	if ( empty( $design_id ) ) {
		return new WP_Error( 'no_design_id', 'No valid design ID provided.', array( 'status' => 400 ) );
	}

	/**
	 * 1. Clean Master Index Meta
	 */
	$master_index = get_post_meta( $design_id, '_addifect_design_index', true );

	if ( is_array( $master_index ) ) {
		if ( isset( $master_index['all_keys'] ) ) {
			$master_index['all_keys'] = array_values( array_diff( $master_index['all_keys'], array( $template_id ) ) );
		}
		if ( isset( $master_index['parts'] ) ) {
			$master_index['parts'] = array_values( array_diff( $master_index['parts'], array( $template_id ) ) );
		}

		$master_index['updated'] = time();
		update_post_meta( $design_id, '_addifect_design_index', $master_index );
		set_transient( 'addifect_active_session_index', $master_index, 12 * HOUR_IN_SECONDS );
	}

	/**
	 * 2. Clean Master Templates Meta
	 */
	$all_templates = get_post_meta( $design_id, '_addifect_design_templates', true );

	if ( is_array( $all_templates ) && isset( $all_templates[ $template_id ] ) ) {
		unset( $all_templates[ $template_id ] );
		update_post_meta( $design_id, '_addifect_design_templates', wp_slash( $all_templates ) );
	}

	/**
	 * 3. Clear the Content Transient
	 */
	delete_transient( 'addifect_site_template_' . $template_id );

	return new WP_REST_Response(
		array(
			'success' => true,
			'message' => 'Template unpublished and cache cleared.',
		),
		200
	);
}