/* ==========================================
   START BOOK AJAX ACTION
========================================== */

/**
 * Start a Monthly Book for the current logged-in member.
 *
 * @return void
 */
function mpp_ajax_start_cottage_book() {

check_ajax_referer(
	'mpp_cottage_room',
	'nonce'
);

	if ( ! is_user_logged_in() ) {
		wp_send_json_error(
			array(
				'message' => 'You must be logged in to start a book.',
			),
			401
		);
	}

	$book_id = isset( $_POST['book_id'] )
		? absint( $_POST['book_id'] )
		: 0;

	if (
		! $book_id
		|| 'cottage_book' !== get_post_type( $book_id )
	) {
		wp_send_json_error(
			array(
				'message' => 'This Monthly Book could not be found.',
			),
			400
		);
	}

	if ( ! mpp_is_book_available( $book_id ) ) {
		wp_send_json_error(
			array(
				'message' => 'This Monthly Book is not available yet.',
			),
			403
		);
	}

	$user_id = get_current_user_id();

	if ( ! mpp_start_member_book( $user_id, $book_id ) ) {
		wp_send_json_error(
			array(
				'message' => 'The Monthly Book could not be started.',
			),
			500
		);
	}

	wp_send_json_success(
		array(
			'message'     => 'Your Monthly Book has been started.',
			'book_id'     => $book_id,
			'active_book' => mpp_get_member_active_book(
				$user_id
			),
		)
	);
}

add_action(
	'wp_ajax_mpp_start_cottage_book',
	'mpp_ajax_start_cottage_book'
);

/* ==========================================
   APPROVE PAGE 1 — ADMIN TEST TOOL
========================================== */

/**
 * Approve Page 1 of the current active Monthly Book.
 *
 * Temporary developer tool.
 *
 * @return void
 */
function mpp_ajax_approve_page_one() {

	check_ajax_referer(
		'mpp_cottage_room',
		'nonce'
	);

	if (
		! is_user_logged_in()
		|| ! current_user_can( 'manage_options' )
	) {
		wp_send_json_error(
			array(
				'message' => 'Not allowed.',
			),
			403
		);
	}

	$user_id = get_current_user_id();

	$book_id = mpp_get_member_active_book(
		$user_id
	);

	if ( ! $book_id ) {
		wp_send_json_error(
			array(
				'message' => 'No active Monthly Book.',
			),
			400
		);
	}

	if (
		! mpp_approve_member_page(
			$user_id,
			$book_id,
			1
		)
	) {
		wp_send_json_error(
			array(
				'message' => 'Page could not be approved.',
			),
			500
		);
	}

	wp_send_json_success(
		array(
			'message' => 'Page approved.',
		)
	);
}

add_action(
	'wp_ajax_mpp_approve_page_one',
	'mpp_ajax_approve_page_one'
);

/* ==========================================
   MARK PAGE REWARD AS SEEN
========================================== */

/**
 * Mark one approved page reward celebration as seen.
 *
 * @return void
 */
function mpp_ajax_mark_reward_seen() {

	check_ajax_referer(
		'mpp_cottage_room',
		'nonce'
	);

	if ( ! is_user_logged_in() ) {
		wp_send_json_error(
			array(
				'message' => 'You must be logged in.',
			),
			401
		);
	}

	$user_id = get_current_user_id();

	$book_id = isset( $_POST['book_id'] )
		? absint( $_POST['book_id'] )
		: 0;

	$page_number = isset( $_POST['page_number'] )
		? absint( $_POST['page_number'] )
		: 0;

	if (
		! $book_id
		|| 'cottage_book' !== get_post_type( $book_id )
		|| $page_number < 1
		|| $page_number > 10
	) {
		wp_send_json_error(
			array(
				'message' => 'Invalid Monthly Book page.',
			),
			400
		);
	}

	$page_data = mpp_get_member_page_progress_entry(
		$user_id,
		$book_id,
		$page_number
	);

	if ( 'approved' !== $page_data['status'] ) {
		wp_send_json_error(
			array(
				'message' => 'This page has not been approved.',
			),
			400
		);
	}

	$page_data['reward_seen'] = true;

	if (
		! mpp_save_member_page_progress(
			$user_id,
			$book_id,
			$page_number,
			$page_data
		)
	) {
		wp_send_json_error(
			array(
				'message' => 'The reward could not be marked as seen.',
			),
			500
		);
	}

	wp_send_json_success(
		array(
			'message' => 'Reward marked as seen.',
		)
	);
}

add_action(
	'wp_ajax_mpp_mark_reward_seen',
	'mpp_ajax_mark_reward_seen'
);

/* ==========================================
   RESET MY BOOK PROGRESS — ADMIN TEST TOOL
========================================== */

/**
 * Reset the current administrator's Monthly Book progress.
 *
 * This removes:
 * - Started Monthly Books
 * - The currently active Monthly Book
 *
 * It does not affect other members.
 *
 * @return void
 */
function mpp_ajax_reset_my_cottage_books() {

	check_ajax_referer(
		'mpp_cottage_room',
		'nonce'
	);

	if (
		! is_user_logged_in()
		|| ! current_user_can( 'manage_options' )
	) {
		wp_send_json_error(
			array(
				'message' => 'You are not allowed to reset book progress.',
			),
			403
		);
	}

	$user_id = get_current_user_id();

	$started_meta_key     = mpp_get_started_books_meta_key();
    $active_meta_key      = mpp_get_active_book_meta_key();
    $page_progress_meta_key = mpp_get_page_progress_meta_key();

	delete_user_meta(
		$user_id,
		$started_meta_key
	);

	delete_user_meta(
		$user_id,
		$active_meta_key
	);
	
	delete_user_meta(
	$user_id,
	$page_progress_meta_key
);

delete_user_meta(
	$user_id,
	mpp_get_cottage_unlocked_meta_key()
);

	/*
	 * Clear WordPress's cached user data so the reset is
	 * reflected immediately on the next page load.
	 */
	clean_user_cache( $user_id );

	$remaining_started = get_user_meta(
		$user_id,
		$started_meta_key,
		true
	);

	$remaining_active = get_user_meta(
		$user_id,
		$active_meta_key,
		true
	);
	
	$remaining_page_progress = get_user_meta(
	$user_id,
	$page_progress_meta_key,
	true
);

	if (
	! empty( $remaining_started )
	|| ! empty( $remaining_active )
	|| ! empty( $remaining_page_progress )
) {
		wp_send_json_error(
			array(
				'message' => 'The saved book progress was not fully cleared.',
			),
			500
		);
	}

	wp_send_json_success(
		array(
			'message' => 'Your Monthly Book progress has been reset.',
		)
	);
}

add_action(
	'wp_ajax_mpp_reset_my_cottage_books',
	'mpp_ajax_reset_my_cottage_books'
);

/* ==========================================
   SAVE MEMBER ROOM
========================================== */

/**
 * Save the current member's selected Decoration IDs.
 *
 * @return void
 */
function mpp_save_member_cottage_room() {

	check_ajax_referer(
		'mpp_cottage_room',
		'nonce'
	);

	if ( ! is_user_logged_in() ) {
		wp_send_json_error(
			array(
				'message' => 'You must be logged in.',
			),
			401
		);
	}

	$user_id = get_current_user_id();

	$raw_room = isset( $_POST['room'] )
		? wp_unslash( $_POST['room'] )
		: '';

	$decoded_room = json_decode(
		$raw_room,
		true
	);

	if ( ! is_array( $decoded_room ) ) {
		wp_send_json_error(
			array(
				'message' => 'Invalid room data.',
			),
			400
		);
	}

	$clean_room = array();

	foreach ( $decoded_room as $slot => $item_id ) {

		$slot    = sanitize_key( $slot );
		$item_id = absint( $item_id );

		if ( ! $slot || ! $item_id ) {
			continue;
		}

		if ( 'cottage_item' !== get_post_type( $item_id ) ) {
			continue;
		}

		$is_hidden = (bool) mpp_get_cottage_field(
			'hidden_item',
			$item_id
		);

		if (
			$is_hidden
			|| ! mpp_member_owns_item( $user_id, $item_id )
		) {
			continue;
		}

		$clean_room[ $slot ] = $item_id;
	}

	update_user_meta(
		$user_id,
		'mpp_cottage_library_room',
		$clean_room
	);

	wp_send_json_success(
		array(
			'room' => $clean_room,
		)
	);
}

add_action(
	'wp_ajax_mpp_save_cottage_room',
	'mpp_save_member_cottage_room'
);

/* ==========================================
   LOAD MEMBER ROOM
========================================== */

/**
 * Load the current member's saved Decoration IDs.
 *
 * @return void
 */
function mpp_load_member_cottage_room() {

	check_ajax_referer(
		'mpp_cottage_room',
		'nonce'
	);

	if ( ! is_user_logged_in() ) {
		wp_send_json_error(
			array(
				'message' => 'You must be logged in.',
			),
			401
		);
	}

	$user_id = get_current_user_id();

	$saved_room = get_user_meta(
		$user_id,
		'mpp_cottage_library_room',
		true
	);

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

	$clean_room = array();

	foreach ( $saved_room as $slot => $item_id ) {

		$slot    = sanitize_key( $slot );
		$item_id = absint( $item_id );

		if (
			! $slot
			|| ! $item_id
			|| ! mpp_member_owns_item( $user_id, $item_id )
		) {
			continue;
		}

		$is_hidden = (bool) mpp_get_cottage_field(
			'hidden_item',
			$item_id
		);

		if ( $is_hidden ) {
			continue;
		}

		$clean_room[ $slot ] = $item_id;
	}

	wp_send_json_success(
		array(
			'room' => $clean_room,
		)
	);
}

add_action(
	'wp_ajax_mpp_load_cottage_room',
	'mpp_load_member_cottage_room'
);
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