<?php
defined( 'ABSPATH' ) || exit;

class YMMHERO_Settings {

	const OPTION_NAME  = 'ymmhero_settings';
	const OPTION_GROUP = 'ymmhero_settings_group';

	public function __construct() {
		add_action( 'admin_init', array( $this, 'register_settings' ) );

		// The cached dropdown tree depends on only_assigned_vehicles, so it has to
		// go when the settings are saved.
		add_action( 'update_option_' . self::OPTION_NAME, array( 'YMMHERO_DB', 'flush_cache' ) );
		add_action( 'add_option_' . self::OPTION_NAME, array( 'YMMHERO_DB', 'flush_cache' ) );
	}

	public static function get_general_defaults() {
		return array(
			'search_button_label' => __( 'Find Parts', 'ymm-hero' ),
			'widget_title'        => __( 'Search by Vehicle', 'ymm-hero' ),
			'make_placeholder'    => __( 'Select Make', 'ymm-hero' ),
			'model_placeholder'   => __( 'Select Model', 'ymm-hero' ),
			'year_placeholder'    => __( 'Select Year', 'ymm-hero' ),
		);
	}

	public static function get_general( $key = null ) {
		return self::get_tab_settings( 'general', self::get_general_defaults(), $key );
	}

	public static function get_display_defaults() {
		return array(
			'search_widget_auto_inject'     => false,
			'fitment_widget_auto_inject'    => true,
			'fitment_widget_position'       => 'before_cart',
			'compatibility_tab_auto_inject' => true,
			'active_filter_banner_enabled'  => true,
			'only_assigned_vehicles'        => true,
		);
	}

	public static function get_display( $key = null ) {
		return self::get_tab_settings( 'display', self::get_display_defaults(), $key );
	}

	public static function get_styling_defaults() {
		return array(
			'primary_color'     => '#2271b1',
			'button_text_color' => '#ffffff',
			'border_style'      => 'none',
		);
	}

	public static function get_styling( $key = null ) {
		return self::get_tab_settings( 'styling', self::get_styling_defaults(), $key );
	}

	private static function get_tab_settings( $tab, $defaults, $key ) {
		$settings = get_option( self::OPTION_NAME, array() );
		$values   = wp_parse_args(
			isset( $settings[ $tab ] ) && is_array( $settings[ $tab ] ) ? $settings[ $tab ] : array(),
			$defaults
		);

		if ( null !== $key ) {
			return isset( $values[ $key ] ) ? $values[ $key ] : null;
		}

		return $values;
	}

	public function register_settings() {
		register_setting( self::OPTION_GROUP, self::OPTION_NAME, array(
			'sanitize_callback' => array( $this, 'sanitize' ),
		) );

		$this->register_general_fields();
		$this->register_display_fields();
		$this->register_styling_fields();
	}

	private function register_general_fields() {
		add_settings_section( 'ymmhero_general_section', '', '__return_false', 'ymmhero_settings_general' );

		// Labels only. Each of these fields is a piece of storefront copy whose
		// label already says what it is; a sentence restating that is noise.
		$fields = array(
			'search_button_label' => __( 'Search Button Label', 'ymm-hero' ),
			'widget_title'        => __( 'Widget Title', 'ymm-hero' ),
			'make_placeholder'    => __( 'Make Placeholder', 'ymm-hero' ),
			'model_placeholder'   => __( 'Model Placeholder', 'ymm-hero' ),
			'year_placeholder'    => __( 'Year Placeholder', 'ymm-hero' ),
		);

		foreach ( $fields as $key => $field ) {
			add_settings_field(
				$key,
				$field,
				array( $this, 'field_text' ),
				'ymmhero_settings_general',
				'ymmhero_general_section',
				array( 'tab' => 'general', 'key' => $key )
			);
		}
	}

	private function register_display_fields() {
		add_settings_section( 'ymmhero_display_shop_section', __( 'Shop Page', 'ymm-hero' ), '__return_false', 'ymmhero_settings_display' );

		add_settings_field(
			'search_widget_auto_inject',
			__( 'Search Widget', 'ymm-hero' ),
			array( $this, 'field_checkbox' ),
			'ymmhero_settings_display',
			'ymmhero_display_shop_section',
			array(
				'tab'   => 'display',
				'key'   => 'search_widget_auto_inject',
				'label' => __( 'Automatically show the search widget above the product grid', 'ymm-hero' ),
			)
		);

		add_settings_field(
			'active_filter_banner_enabled',
			__( 'Active Filter Banner', 'ymm-hero' ),
			array( $this, 'field_checkbox' ),
			'ymmhero_settings_display',
			'ymmhero_display_shop_section',
			array(
				'tab'   => 'display',
				'key'   => 'active_filter_banner_enabled',
				'label' => __( 'Show the "Showing results for" banner when a vehicle filter is active', 'ymm-hero' ),
			)
		);

		add_settings_field(
			'only_assigned_vehicles',
			__( 'Vehicle Dropdowns', 'ymm-hero' ),
			array( $this, 'field_checkbox' ),
			'ymmhero_settings_display',
			'ymmhero_display_shop_section',
			array(
				'tab'         => 'display',
				'key'         => 'only_assigned_vehicles',
				'label'       => __( 'Only show vehicles with assigned products', 'ymm-hero' ),
				'description' => __( 'Turn this off while setting up the store, so vehicles show up before any products are assigned to them.', 'ymm-hero' ),
			)
		);

		add_settings_section( 'ymmhero_display_product_section', __( 'Product Detail Page', 'ymm-hero' ), '__return_false', 'ymmhero_settings_display' );

		add_settings_field(
			'fitment_widget_auto_inject',
			__( 'Fitment Widget', 'ymm-hero' ),
			array( $this, 'field_checkbox' ),
			'ymmhero_settings_display',
			'ymmhero_display_product_section',
			array(
				'tab'   => 'display',
				'key'   => 'fitment_widget_auto_inject',
				'label' => __( 'Automatically show the fitment widget on product pages', 'ymm-hero' ),
			)
		);

		add_settings_field(
			'fitment_widget_position',
			__( 'Fitment Widget Position', 'ymm-hero' ),
			array( $this, 'field_select' ),
			'ymmhero_settings_display',
			'ymmhero_display_product_section',
			array(
				'tab'     => 'display',
				'key'     => 'fitment_widget_position',
				'options' => array(
					'before_cart' => __( 'Before Add to Cart', 'ymm-hero' ),
					'after_cart'  => __( 'After Add to Cart', 'ymm-hero' ),
				),
			)
		);

		add_settings_field(
			'compatibility_tab_auto_inject',
			__( 'Compatibility Tab', 'ymm-hero' ),
			array( $this, 'field_checkbox' ),
			'ymmhero_settings_display',
			'ymmhero_display_product_section',
			array(
				'tab'   => 'display',
				'key'   => 'compatibility_tab_auto_inject',
				'label' => __( 'Automatically add a Compatibility tab to products with mapped vehicles', 'ymm-hero' ),
			)
		);
	}

	private function register_styling_fields() {
		add_settings_section( 'ymmhero_styling_section', '', '__return_false', 'ymmhero_settings_styling' );

		add_settings_field(
			'primary_color',
			__( 'Primary Color', 'ymm-hero' ),
			array( $this, 'field_color' ),
			'ymmhero_settings_styling',
			'ymmhero_styling_section',
			array( 'tab' => 'styling', 'key' => 'primary_color' )
		);

		add_settings_field(
			'button_text_color',
			__( 'Button Text Color', 'ymm-hero' ),
			array( $this, 'field_color' ),
			'ymmhero_settings_styling',
			'ymmhero_styling_section',
			array( 'tab' => 'styling', 'key' => 'button_text_color' )
		);

		add_settings_field(
			'border_style',
			__( 'Widget Border Style', 'ymm-hero' ),
			array( $this, 'field_radio' ),
			'ymmhero_settings_styling',
			'ymmhero_styling_section',
			array(
				'tab'     => 'styling',
				'key'     => 'border_style',
				'options' => array(
					'none'  => __( 'None', 'ymm-hero' ),
					'light' => __( 'Light', 'ymm-hero' ),
					'card'  => __( 'Card', 'ymm-hero' ),
				),
			)
		);
	}

	public function field_text( $args ) {
		$value = self::get_tab_value( $args );
		printf(
			'<input type="text" class="regular-text" name="%1$s[%2$s][%3$s]" value="%4$s" />',
			esc_attr( self::OPTION_NAME ),
			esc_attr( $args['tab'] ),
			esc_attr( $args['key'] ),
			esc_attr( $value )
		);

		if ( ! empty( $args['description'] ) ) {
			printf( '<p class="description">%s</p>', esc_html( $args['description'] ) );
		}
	}

	public function field_checkbox( $args ) {
		$value = self::get_tab_value( $args );
		printf(
			'<label><input type="checkbox" name="%1$s[%2$s][%3$s]" value="1" %4$s /> %5$s</label>',
			esc_attr( self::OPTION_NAME ),
			esc_attr( $args['tab'] ),
			esc_attr( $args['key'] ),
			checked( $value, true, false ),
			esc_html( $args['label'] )
		);

		if ( ! empty( $args['description'] ) ) {
			printf( '<p class="description">%s</p>', esc_html( $args['description'] ) );
		}
	}

	public function field_select( $args ) {
		$value = self::get_tab_value( $args );

		printf(
			'<select name="%1$s[%2$s][%3$s]">',
			esc_attr( self::OPTION_NAME ),
			esc_attr( $args['tab'] ),
			esc_attr( $args['key'] )
		);

		foreach ( $args['options'] as $option_value => $option_label ) {
			printf(
				'<option value="%1$s" %2$s>%3$s</option>',
				esc_attr( $option_value ),
				selected( $value, $option_value, false ),
				esc_html( $option_label )
			);
		}

		echo '</select>';
	}

	public function field_color( $args ) {
		$value = self::get_tab_value( $args );
		printf(
			'<input type="text" class="ymm-color-picker" name="%1$s[%2$s][%3$s]" value="%4$s" />',
			esc_attr( self::OPTION_NAME ),
			esc_attr( $args['tab'] ),
			esc_attr( $args['key'] ),
			esc_attr( $value )
		);
	}

	public function field_radio( $args ) {
		$value = self::get_tab_value( $args );

		foreach ( $args['options'] as $option_value => $option_label ) {
			printf(
				'<label style="margin-right:15px;"><input type="radio" name="%1$s[%2$s][%3$s]" value="%4$s" %5$s /> %6$s</label>',
				esc_attr( self::OPTION_NAME ),
				esc_attr( $args['tab'] ),
				esc_attr( $args['key'] ),
				esc_attr( $option_value ),
				checked( $value, $option_value, false ),
				esc_html( $option_label )
			);
		}
	}

	private static function get_tab_value( $args ) {
		if ( 'display' === $args['tab'] ) {
			return self::get_display( $args['key'] );
		}
		if ( 'styling' === $args['tab'] ) {
			return self::get_styling( $args['key'] );
		}
		return self::get_general( $args['key'] );
	}

	public function sanitize( $input ) {
		$existing = get_option( self::OPTION_NAME, array() );

		if ( isset( $input['general'] ) && is_array( $input['general'] ) ) {
			$existing['general'] = $this->sanitize_general( $input['general'] );
		}

		if ( isset( $input['display'] ) && is_array( $input['display'] ) ) {
			$existing['display'] = $this->sanitize_display( $input['display'] );
		}

		if ( isset( $input['styling'] ) && is_array( $input['styling'] ) ) {
			$existing['styling'] = $this->sanitize_styling( $input['styling'] );
		}

		return $existing;
	}

	private function sanitize_general( $input ) {
		$defaults = self::get_general_defaults();
		$general  = array();

		foreach ( array( 'search_button_label', 'widget_title', 'make_placeholder', 'model_placeholder', 'year_placeholder' ) as $key ) {
			$value           = isset( $input[ $key ] ) ? sanitize_text_field( $input[ $key ] ) : '';
			$general[ $key ] = '' !== $value ? $value : $defaults[ $key ];
		}

		return $general;
	}

	private function sanitize_display( $input ) {
		$defaults = self::get_display_defaults();

		$fitment_position = isset( $input['fitment_widget_position'] ) ? sanitize_key( $input['fitment_widget_position'] ) : '';
		if ( ! in_array( $fitment_position, array( 'before_cart', 'after_cart' ), true ) ) {
			$fitment_position = $defaults['fitment_widget_position'];
		}

		return array(
			'search_widget_auto_inject'     => ! empty( $input['search_widget_auto_inject'] ),
			'fitment_widget_auto_inject'    => ! empty( $input['fitment_widget_auto_inject'] ),
			'fitment_widget_position'       => $fitment_position,
			'compatibility_tab_auto_inject' => ! empty( $input['compatibility_tab_auto_inject'] ),
			'active_filter_banner_enabled'  => ! empty( $input['active_filter_banner_enabled'] ),
			'only_assigned_vehicles'        => ! empty( $input['only_assigned_vehicles'] ),
		);
	}

	private function sanitize_styling( $input ) {
		$defaults = self::get_styling_defaults();

		$primary_color     = isset( $input['primary_color'] ) ? sanitize_hex_color( $input['primary_color'] ) : '';
		$button_text_color = isset( $input['button_text_color'] ) ? sanitize_hex_color( $input['button_text_color'] ) : '';

		$border_style = isset( $input['border_style'] ) ? sanitize_key( $input['border_style'] ) : '';
		if ( ! in_array( $border_style, array( 'none', 'light', 'card' ), true ) ) {
			$border_style = $defaults['border_style'];
		}

		return array(
			'primary_color'     => $primary_color ? $primary_color : $defaults['primary_color'],
			'button_text_color' => $button_text_color ? $button_text_color : $defaults['button_text_color'],
			'border_style'      => $border_style,
		);
	}
}