<?php
/**
 * Bar settings: defaults, cleaning of what the editor sends, reading and saving.
 *
 * Every bar keeps all its settings in one JSON post meta (`_runline_settings`). A second meta, `_runline_active`,
 * says whether the bar is switched on, so the site can find active bars with one query.
 */

defined( 'ABSPATH' ) || exit;

define( 'RUNLINE_META', '_runline_settings' );
define( 'RUNLINE_ACTIVE_META', '_runline_active' );

/**
 * How many messages one bar can have.
 */
function runline_max_items() {
	return max( 1, (int) apply_filters( 'runline_max_items', 50 ) );
}

/**
 * Settings of a new bar. Example texts so the first bar already looks finished.
 */
function runline_default_settings() {
	return array(
		'enabled'          => true,
		'items'            => array(
			array(
				'text'    => __( 'Free shipping on all orders over $50', 'runline' ),
				'url'     => '',
				'new_tab' => false,
				'icon'    => '🚚',
				'image'   => '',
				'author'  => '',
			),
			array(
				'text'    => __( 'New collection is live — shop now', 'runline' ),
				'url'     => '',
				'new_tab' => false,
				'icon'    => '✨',
				'image'   => '',
				'author'  => '',
			),
			array(
				'text'    => __( 'Subscribe and get 10% off your first order', 'runline' ),
				'url'     => '',
				'new_tab' => false,
				'icon'    => '🎁',
				'image'   => '',
				'author'  => '',
			),
		),
		'separator'        => '•',
		'label'            => '',
		'label_bg'         => '#e11d48',
		'label_color'      => '#ffffff',
		'speed'            => 60,
		'speed_mobile'     => 45,
		'direction'        => 'left',
		'pause_hover'      => true,
		'bg'               => '#111827',
		'color'            => '#ffffff',
		'link_color'       => '',
		'link_hover'       => '',
		'font'             => 'inherit',
		'font_size'        => 15,
		'font_size_mobile' => 14,
		'font_weight'      => '500',
		'uppercase'        => false,
		'height'           => 40,
		'gap'              => 40,
		'bg2'              => '',
		'bg_angle'         => 90,
		'border_width'     => 0,
		'border_color'     => '#000000',
		'shadow'           => 'none',
		'ribbon'           => 'none',
		'tilt'             => -2,
		'ribbon2'          => '#facc15',
		'css_class'        => '',
		'signup'           => array(
			'on'          => false,
			'placeholder' => __( 'Your e-mail', 'runline' ),
			'button'      => __( 'Subscribe', 'runline' ),
			'success'     => __( 'Thank you! You are subscribed.', 'runline' ),
			'consent'     => '',
			'hide_after'  => true,
			'service'     => 'local',
			'list'        => '',
		),
		'ab'               => array(
			'on'    => false,
			'items' => array(),
			'split' => 50,
		),
		'width'            => 'full',
		'max_width'        => 1200,
		'align'            => 'center',
		'radius'           => 0,
		'position'         => 'top',
		'sticky'           => false,
		'priority'         => 10,
		'mobile_layout'    => 'stack',
		'closable'         => true,
		'close_days'       => 0,
		'devices'          => array(
			'desktop' => true,
			'tablet'  => true,
			'mobile'  => true,
		),
		'rules'            => array(
			'show' => array(),
			'hide' => array(),
		),
		'schedule'         => array(
			'on'    => false,
			'start' => '',
			'end'   => '',
			'days'  => array(),
			'from'  => '',
			'to'    => '',
		),
		'countdown'        => array(
			'on'         => false,
			'end'        => '',
			'place'      => 'right',
			'prefix'     => __( 'Ends in', 'runline' ),
			'after'      => 'hide',
			'after_text' => __( 'The offer has ended', 'runline' ),
			'bg'         => '#facc15',
			'color'      => '#111827',
			'source'     => 'date',
			'product'    => 0,
		),
		'mode'             => 'marquee',
		'interval'         => 4,
		'style'            => 'inline',
		'image_height'     => 70,
		'source'           => array(
			'type'     => 'manual',
			'count'    => 5,
			'term'     => '',
			'products' => 'newest',
			'rss'      => '',
			'images'   => false,
			'prices'   => true,
			'template' => __( '{name} bought {product} {time}', 'runline' ),
			'days'     => 14,
			'name'     => 'initial',
			'city'     => false,
			'ids'      => array(),
			'text'     => '',
			'mix'      => false,
		),
		'button'           => array(
			'on'      => false,
			'text'    => __( 'Shop now', 'runline' ),
			'url'     => '',
			'new_tab' => false,
			'bg'      => '#ffffff',
			'color'   => '#111827',
			'radius'  => 4,
		),
		'coupon'           => array(
			'on'     => false,
			'code'   => 'SALE10',
			'prefix' => __( 'Code:', 'runline' ),
			'copy'   => __( 'Copy', 'runline' ),
			'copied' => __( 'Copied!', 'runline' ),
			'bg'     => '#ffffff',
			'color'  => '#111827',
		),
		'shipping'         => array(
			'on'        => false,
			'threshold' => 0,
			'before'    => __( 'Add {free_shipping_left} more for free shipping', 'runline' ),
			'after'     => __( 'You get free shipping!', 'runline' ),
			'progress'  => true,
			'color'     => '#22c55e',
		),
	);
}

/**
 * Choices of the select fields: value => label.
 */
function runline_choices( $key ) {
	$choices = array(
		'direction'     => array(
			'left'  => __( 'Right to left', 'runline' ),
			'right' => __( 'Left to right', 'runline' ),
		),
		'font'          => array_merge(
			array(
				'inherit' => __( 'Font of your theme', 'runline' ),
				'system'  => __( 'System sans-serif', 'runline' ),
				'serif'   => __( 'Serif', 'runline' ),
				'mono'    => __( 'Monospace', 'runline' ),
			),
			runline_google_font_choices()
		),
		'shadow'        => array(
			'none'   => __( 'None', 'runline' ),
			'soft'   => __( 'Soft', 'runline' ),
			'strong' => __( 'Strong', 'runline' ),
		),
		'buyer_name'    => array(
			'initial' => __( 'First letter only ("A.")', 'runline' ),
			'first'   => __( 'First name ("Anna")', 'runline' ),
			'none'    => __( 'No name ("Someone")', 'runline' ),
		),
		'mobile_layout' => array(
			'stack'  => __( 'Form or button under the moving text', 'runline' ),
			'hide'   => __( 'Hide the moving text', 'runline' ),
			'inline' => __( 'As on a computer', 'runline' ),
		),
		'ribbon'        => array(
			'none'    => __( 'Straight', 'runline' ),
			'tilted'  => __( 'Tilted ribbon', 'runline' ),
			'crossed' => __( 'Two crossed ribbons', 'runline' ),
		),
		'font_weight'   => array(
			'400' => __( 'Normal', 'runline' ),
			'500' => __( 'Medium', 'runline' ),
			'600' => __( 'Semi-bold', 'runline' ),
			'700' => __( 'Bold', 'runline' ),
			'800' => __( 'Extra bold', 'runline' ),
		),
		'position'      => array(
			'top'    => __( 'Top of the site', 'runline' ),
			'bottom' => __( 'Bottom of the screen', 'runline' ),
			'manual' => __( 'Only where I put the shortcode', 'runline' ),
		),
		'width'         => array(
			'full'  => __( 'Full width', 'runline' ),
			'boxed' => __( 'Limited width', 'runline' ),
		),
		'align'         => array(
			'left'   => __( 'Left', 'runline' ),
			'center' => __( 'Center', 'runline' ),
			'right'  => __( 'Right', 'runline' ),
		),
		'cd_place'      => array(
			'left'  => __( 'Fixed on the left', 'runline' ),
			'right' => __( 'Fixed on the right', 'runline' ),
			'text'  => __( 'Only inside the texts ({countdown})', 'runline' ),
		),
		'cd_after'      => array(
			'hide' => __( 'Hide the bar', 'runline' ),
			'text' => __( 'Show a text instead of the timer', 'runline' ),
		),
		'cd_source'     => array(
			'date'            => __( 'A date I choose', 'runline' ),
			'product'         => __( 'End of the sale of a product', 'runline' ),
			'current_product' => __( 'End of the sale of the product on the page', 'runline' ),
		),
		'mode'          => array(
			'marquee'    => __( 'Scrolling (endless)', 'runline' ),
			'fade'       => __( 'One by one: fade', 'runline' ),
			'slide'      => __( 'One by one: slide up', 'runline' ),
			'typewriter' => __( 'One by one: typewriter', 'runline' ),
			'vertical'   => __( 'Vertical ticker', 'runline' ),
			'static'     => __( 'Still (no motion)', 'runline' ),
		),
		'style'         => array(
			'inline' => __( 'Text in a line', 'runline' ),
			'cards'  => __( 'Cards (reviews, logos with captions)', 'runline' ),
		),
		'source'        => array(
			'manual'   => __( 'Messages I write', 'runline' ),
			'posts'    => __( 'Latest posts', 'runline' ),
			'products' => __( 'WooCommerce products', 'runline' ),
			'rss'      => __( 'RSS feed', 'runline' ),
			'orders'   => __( 'Recent orders (social proof)', 'runline' ),
		),
		'service'       => runline_signup_services(),
		'products'      => array(
			'newest'       => __( 'Newest', 'runline' ),
			'on_sale'      => __( 'On sale', 'runline' ),
			'featured'     => __( 'Featured', 'runline' ),
			'best_selling' => __( 'Best selling', 'runline' ),
			'chosen'       => __( 'Products I choose', 'runline' ),
		),
	);
	return isset( $choices[ $key ] ) ? $choices[ $key ] : array();
}

/**
 * CSS font stacks of the "font" choice.
 */
/**
 * Google Fonts as choices: "g:<family>" => "<family> (Google Fonts)".
 */
function runline_google_font_choices() {
	$choices = array();
	foreach ( array_keys( runline_google_fonts() ) as $family ) {
		/* translators: %s: font name. */
		$choices[ 'g:' . $family ] = sprintf( __( '%s (Google Fonts, from your site)', 'runline' ), $family );
	}
	return $choices;
}

function runline_font_stack( $font ) {
	$family = runline_google_family( $font );
	if ( $family ) {
		return '"' . $family . '", ' . runline_google_fonts()[ $family ];
	}
	$stacks = array(
		'system' => '-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif',
		'serif'  => 'Georgia, "Times New Roman", Times, serif',
		'mono'   => 'ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace',
	);
	return isset( $stacks[ $font ] ) ? $stacks[ $font ] : 'inherit';
}

/**
 * Font stacks of all "font" choices: key => CSS (for the previews in the admin app and the block).
 */
function runline_font_stacks() {
	$fonts = array();
	foreach ( array_keys( runline_choices( 'font' ) ) as $font ) {
		$fonts[ $font ] = runline_font_stack( $font );
	}
	return $fonts;
}

/**
 * HTML allowed inside an item text.
 */
function runline_allowed_html() {
	return array(
		'strong' => array(),
		'b'      => array(),
		'em'     => array(),
		'i'      => array(),
		'u'      => array(),
		's'      => array(),
		'br'     => array(),
		'span'   => array( 'class' => true ),
	);
}

/**
 * Cleans settings that come from the editor form (or an import) into a full, safe settings array.
 * Check boxes the form does not send are "off"; every other missing value takes the default.
 *
 * @param array $raw Unslashed form values.
 * @return array
 */
function runline_sanitize_settings( $raw ) {
	$raw      = is_array( $raw ) ? $raw : array();
	$defaults = runline_default_settings();
	$out      = array();

	$out['enabled']     = ! empty( $raw['enabled'] );
	$out['pause_hover'] = ! empty( $raw['pause_hover'] );
	$out['uppercase']   = ! empty( $raw['uppercase'] );
	$out['sticky']      = ! empty( $raw['sticky'] );
	$out['closable']    = ! empty( $raw['closable'] );
	$out['rules']       = runline_rules_sanitize( isset( $raw['rules'] ) ? $raw['rules'] : array() );
	$out['schedule']    = runline_rules_sanitize_schedule( isset( $raw['schedule'] ) ? $raw['schedule'] : array() );
	$out['countdown']   = runline_sanitize_countdown( isset( $raw['countdown'] ) ? $raw['countdown'] : array() );
	$group              = function ( $key, $schema ) use ( $raw, $defaults ) {
		return runline_sanitize_group( isset( $raw[ $key ] ) ? $raw[ $key ] : array(), $defaults[ $key ], $schema );
	};
	$out['source']      = $group(
		'source',
		array(
			'type'     => 'choice:source',
			'count'    => 'int:1:30',
			'term'     => 'term',
			'products' => 'choice:products',
			'rss'      => 'url',
			'images'   => 'bool',
			'prices'   => 'bool',
			'template' => 'text:120',
			'days'     => 'int:1:90',
			'name'     => 'choice:buyer_name',
			'city'     => 'bool',
			'ids'      => 'ids:30',
			'text'     => 'text:120',
			'mix'      => 'bool',
		)
	);
	$out['button']      = $group(
		'button',
		array(
			'on'      => 'bool',
			'text'    => 'text:40',
			'url'     => 'url',
			'new_tab' => 'bool',
			'bg'      => 'color',
			'color'   => 'color',
			'radius'  => 'int:0:40',
		)
	);
	$out['coupon']      = $group(
		'coupon',
		array(
			'on'     => 'bool',
			'code'   => 'text:40',
			'prefix' => 'text:40',
			'copy'   => 'text:30',
			'copied' => 'text:30',
			'bg'     => 'color',
			'color'  => 'color',
		)
	);
	$out['signup']      = $group(
		'signup',
		array(
			'on'          => 'bool',
			'placeholder' => 'text:60',
			'button'      => 'text:30',
			'success'     => 'text:120',
			'consent'     => 'text:200',
			'hide_after'  => 'bool',
			'service'     => 'choice:service',
			'list'        => 'text:60',
		)
	);
	$out['shipping']    = $group(
		'shipping',
		array(
			'on'        => 'bool',
			'threshold' => 'float',
			'before'    => 'text:160',
			'after'     => 'text:160',
			'progress'  => 'bool',
			'color'     => 'color',
		)
	);

	$out['items'] = runline_sanitize_items( isset( $raw['items'] ) ? $raw['items'] : array() );
	$ab           = isset( $raw['ab'] ) && is_array( $raw['ab'] ) ? $raw['ab'] : array();
	$out['ab']    = array(
		'on'    => ! empty( $ab['on'] ),
		'items' => runline_sanitize_items( isset( $ab['items'] ) ? $ab['items'] : array() ),
		'split' => isset( $ab['split'] ) && is_numeric( $ab['split'] ) ? min( 90, max( 10, (int) $ab['split'] ) ) : 50,
	);

	foreach ( array( 'separator', 'label' ) as $key ) {
		$value       = isset( $raw[ $key ] ) ? sanitize_text_field( (string) $raw[ $key ] ) : '';
		$out[ $key ] = mb_substr( $value, 0, 'label' === $key ? 40 : 8 );
	}

	// Colours: the main ones fall back to the default, link colours may stay empty (= text colour).
	foreach ( array( 'bg', 'color', 'label_bg', 'label_color' ) as $key ) {
		$color       = isset( $raw[ $key ] ) ? sanitize_hex_color( (string) $raw[ $key ] ) : '';
		$out[ $key ] = $color ? $color : $defaults[ $key ];
	}
	foreach ( array( 'border_color', 'ribbon2' ) as $key ) {
		$color       = isset( $raw[ $key ] ) ? sanitize_hex_color( (string) $raw[ $key ] ) : '';
		$out[ $key ] = $color ? $color : $defaults[ $key ];
	}
	$out['css_class'] = isset( $raw['css_class'] ) ? implode( ' ', array_filter( array_map( 'sanitize_html_class', preg_split( '/\s+/', (string) $raw['css_class'] ) ) ) ) : '';
	foreach ( array( 'link_color', 'link_hover', 'bg2' ) as $key ) {
		$color       = isset( $raw[ $key ] ) ? sanitize_hex_color( (string) $raw[ $key ] ) : '';
		$out[ $key ] = $color ? $color : '';
	}

	$numbers = array(
		'speed'            => array( 10, 400 ),
		'speed_mobile'     => array( 10, 400 ),
		'font_size'        => array( 10, 48 ),
		'font_size_mobile' => array( 10, 48 ),
		'height'           => array( 24, 120 ),
		'gap'              => array( 8, 200 ),
		'max_width'        => array( 120, 3000 ),
		'radius'           => array( 0, 60 ),
		'priority'         => array( 0, 100 ),
		'close_days'       => array( 0, 365 ),
		'interval'         => array( 2, 20 ),
		'bg_angle'         => array( 0, 360 ),
		'border_width'     => array( 0, 10 ),
		'tilt'             => array( -8, 8 ),
		'image_height'     => array( 20, 100 ),
	);
	foreach ( $numbers as $key => $range ) {
		$value       = isset( $raw[ $key ] ) && is_numeric( $raw[ $key ] ) ? (int) $raw[ $key ] : $defaults[ $key ];
		$out[ $key ] = min( $range[1], max( $range[0], $value ) );
	}

	foreach ( array( 'direction', 'font', 'font_weight', 'position', 'width', 'align', 'mode', 'style', 'shadow', 'ribbon', 'mobile_layout' ) as $key ) {
		$value       = isset( $raw[ $key ] ) ? (string) $raw[ $key ] : '';
		$out[ $key ] = array_key_exists( $value, runline_choices( $key ) ) ? $value : $defaults[ $key ];
	}

	$out['devices'] = array();
	foreach ( array_keys( $defaults['devices'] ) as $device ) {
		$out['devices'][ $device ] = ! empty( $raw['devices'][ $device ] );
	}

	return apply_filters( 'runline_sanitize_settings', $out, $raw );
}

/**
 * Cleans a list of messages (empty ones are dropped, at most runline_max_items()).
 *
 * @param mixed $raw Messages from the editor.
 * @return array
 */
function runline_sanitize_items( $raw ) {
	$items = array();
	if ( ! is_array( $raw ) ) {
		return $items;
	}
	foreach ( $raw as $item ) {
		if ( ! is_array( $item ) ) {
			continue;
		}
		$text  = isset( $item['text'] ) ? trim( wp_kses( (string) $item['text'], runline_allowed_html() ) ) : '';
		$icon  = isset( $item['icon'] ) ? trim( sanitize_text_field( (string) $item['icon'] ) ) : '';
		$image = isset( $item['image'] ) ? esc_url_raw( trim( (string) $item['image'] ) ) : '';
		if ( '' === $text && '' === $icon && '' === $image ) {
			continue;
		}
		$items[] = array(
			'text'    => $text,
			'url'     => isset( $item['url'] ) ? esc_url_raw( trim( (string) $item['url'] ) ) : '',
			'new_tab' => ! empty( $item['new_tab'] ),
			'icon'    => mb_substr( $icon, 0, 8 ),
			'image'   => $image,
			'author'  => isset( $item['author'] ) ? mb_substr( trim( sanitize_text_field( (string) $item['author'] ) ), 0, 80 ) : '',
		);
		if ( count( $items ) >= runline_max_items() ) {
			break;
		}
	}
	return $items;
}

/**
 * Cleans the countdown settings. "end" is "YYYY-MM-DDTHH:MM" in the site time zone.
 */
function runline_sanitize_countdown( $raw ) {
	$raw      = is_array( $raw ) ? $raw : array();
	$defaults = runline_default_settings()['countdown'];
	$end      = isset( $raw['end'] ) ? (string) $raw['end'] : '';
	$pick     = function ( $key, $choices ) use ( $raw, $defaults ) {
		$value = isset( $raw[ $key ] ) ? (string) $raw[ $key ] : '';
		return array_key_exists( $value, runline_choices( $choices ) ) ? $value : $defaults[ $key ];
	};
	$color    = function ( $key ) use ( $raw, $defaults ) {
		$value = isset( $raw[ $key ] ) ? sanitize_hex_color( (string) $raw[ $key ] ) : '';
		return $value ? $value : $defaults[ $key ];
	};
	return array(
		'on'         => ! empty( $raw['on'] ),
		'end'        => preg_match( '/^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}$/', $end ) ? $end : '',
		'place'      => $pick( 'place', 'cd_place' ),
		'prefix'     => isset( $raw['prefix'] ) ? mb_substr( sanitize_text_field( (string) $raw['prefix'] ), 0, 60 ) : $defaults['prefix'],
		'after'      => $pick( 'after', 'cd_after' ),
		'after_text' => isset( $raw['after_text'] ) ? mb_substr( sanitize_text_field( (string) $raw['after_text'] ), 0, 120 ) : $defaults['after_text'],
		'bg'         => $color( 'bg' ),
		'color'      => $color( 'color' ),
		'source'     => $pick( 'source', 'cd_source' ),
		'product'    => isset( $raw['product'] ) ? absint( $raw['product'] ) : 0,
	);
}

/**
 * Cleans a group of settings by a schema: key => bool | text:<max> | url | color | float | int:<min>:<max> |
 * choice:<runline_choices key> | term ("taxonomy:id" or "") | ids:<max> (list of post IDs). Missing keys take the defaults (check boxes: off).
 *
 * @param mixed $raw      Values from the editor.
 * @param array $defaults Defaults of the group.
 * @param array $schema   Schema.
 * @return array
 */
function runline_sanitize_group( $raw, $defaults, $schema ) {
	$raw = is_array( $raw ) ? $raw : array();
	$out = array();
	foreach ( $schema as $key => $type ) {
		$parts = explode( ':', $type );
		$value = isset( $raw[ $key ] ) ? $raw[ $key ] : null;
		switch ( $parts[0] ) {
			case 'bool':
				$out[ $key ] = ! empty( $value );
				break;
			case 'text':
				$out[ $key ] = null === $value ? $defaults[ $key ] : mb_substr( sanitize_text_field( (string) $value ), 0, (int) $parts[1] );
				break;
			case 'url':
				$out[ $key ] = null === $value ? $defaults[ $key ] : esc_url_raw( trim( (string) $value ) );
				break;
			case 'color':
				$color       = null === $value ? '' : sanitize_hex_color( (string) $value );
				$out[ $key ] = $color ? $color : $defaults[ $key ];
				break;
			case 'float':
				$out[ $key ] = is_numeric( $value ) ? max( 0, round( (float) $value, 2 ) ) : $defaults[ $key ];
				break;
			case 'int':
				$out[ $key ] = is_numeric( $value ) ? min( (int) $parts[2], max( (int) $parts[1], (int) $value ) ) : $defaults[ $key ];
				break;
			case 'choice':
				$out[ $key ] = array_key_exists( (string) $value, runline_choices( $parts[1] ) ) ? (string) $value : $defaults[ $key ];
				break;
			case 'term':
				$out[ $key ] = preg_match( '/^[a-z0-9_-]+:\d+$/', (string) $value ) ? (string) $value : '';
				break;
			case 'ids':
				$out[ $key ] = array_slice( array_values( array_unique( array_filter( array_map( 'absint', (array) $value ) ) ) ), 0, (int) $parts[1] );
				break;
		}
	}
	return $out;
}

/**
 * End of the countdown as a Unix timestamp (0 = no countdown).
 */
function runline_countdown_end( $settings ) {
	$countdown = $settings['countdown'];
	if ( empty( $countdown['on'] ) ) {
		return 0;
	}
	if ( 'product' === $countdown['source'] ) {
		return runline_sale_end( $countdown['product'] );
	}
	if ( 'current_product' === $countdown['source'] ) {
		return is_singular( 'product' ) ? runline_sale_end( get_queried_object_id() ) : 0;
	}
	if ( '' === $countdown['end'] ) {
		return 0;
	}
	$date = date_create_immutable( $countdown['end'], wp_timezone() );
	return $date ? $date->getTimestamp() : 0;
}

/**
 * Settings of a bar, with defaults for anything a newer version added.
 *
 * @param int $post_id Bar ID.
 * @return array
 */
function runline_get_settings( $post_id ) {
	$json     = get_post_meta( $post_id, RUNLINE_META, true );
	$settings = is_string( $json ) && '' !== $json ? json_decode( $json, true ) : null;
	if ( ! is_array( $settings ) ) {
		return runline_default_settings();
	}
	// Bars of the test builds before 1.0: "show_on" = all / home.
	if ( isset( $settings['show_on'] ) && ! isset( $settings['rules'] ) ) {
		$settings['rules'] = array(
			'show' => 'home' === $settings['show_on'] ? array(
				array(
					'type'  => 'front',
					'value' => null,
				),
			) : array(),
			'hide' => array(),
		);
	}
	unset( $settings['show_on'] );
	$defaults = runline_default_settings();
	$settings = array_merge( $defaults, $settings );
	foreach ( array( 'devices', 'rules', 'schedule', 'countdown', 'source', 'button', 'coupon', 'shipping', 'ab', 'signup' ) as $key ) {
		$settings[ $key ] = array_merge( $defaults[ $key ], (array) $settings[ $key ] );
	}
	return $settings;
}

/**
 * Saves cleaned settings of a bar.
 *
 * @param int   $post_id  Bar ID.
 * @param array $settings Output of runline_sanitize_settings().
 */
function runline_save_settings( $post_id, $settings ) {
	update_post_meta( $post_id, RUNLINE_META, wp_slash( wp_json_encode( $settings, JSON_UNESCAPED_UNICODE ) ) );
	update_post_meta( $post_id, RUNLINE_ACTIVE_META, $settings['enabled'] ? '1' : '0' );
	do_action( 'runline_settings_saved', $post_id, $settings );
}

/**
 * Switches a bar on or off. Any number of bars can be on.
 *
 * @param int  $post_id Bar ID.
 * @param bool $on      On or off.
 */
function runline_set_active( $post_id, $on ) {
	$settings            = runline_get_settings( $post_id );
	$settings['enabled'] = (bool) $on;
	runline_save_settings( $post_id, $settings );
}