<?php
/**
 * Settings registration and sanitization.
 */

defined( 'ABSPATH' ) || exit;

class EightDigits_Factura_Settings {

	const PROVINCES = array(
		'Alava',
		'Albacete',
		'Alicante',
		'Almeria',
		'Avila',
		'Badajoz',
		'Barcelona',
		'Burgos',
		'Caceres',
		'Cadiz',
		'Castellon',
		'Ciudad Real',
		'Cordoba',
		'A Coruna',
		'Cuenca',
		'Girona',
		'Granada',
		'Guadalajara',
		'Guipuzcoa',
		'Huelva',
		'Huesca',
		'Jaen',
		'Leon',
		'Lleida',
		'La Rioja',
		'Lugo',
		'Madrid',
		'Malaga',
		'Murcia',
		'Navarra',
		'Ourense',
		'Asturias',
		'Palencia',
		'Las Palmas',
		'Pontevedra',
		'Salamanca',
		'Santa Cruz de Tenerife',
		'Cantabria',
		'Segovia',
		'Sevilla',
		'Soria',
		'Tarragona',
		'Teruel',
		'Toledo',
		'Valencia',
		'Valladolid',
		'Vizcaya',
		'Zamora',
		'Zaragoza',
		'Ceuta',
		'Melilla',
		'Islas Baleares',
	);

	const TRIGGER_STATUSES = array( 'wc-processing', 'wc-completed', 'wc-on-hold' );

	public function __construct() {
		add_action( 'admin_init', array( $this, 'register_settings' ) );
	}

	/**
	 * Register plugin settings.
	 */
	public function register_settings(): void {
		foreach ( $this->get_option_schema() as $option => $args ) {
			register_setting(
				'eightdigits_factura_settings',
				$option,
				array(
					'type'              => $args['type'],
					'sanitize_callback' => array( $this, $args['sanitize_callback'] ),
					'default'           => $args['default'],
				)
			);
		}

		add_settings_section(
			'eightdigits_factura_section_company',
			__( 'Datos del emisor', '8digits-factura-for-woocommerce' ),
			'__return_false',
			'eightdigits_factura_settings'
		);

		$this->add_field( 'company_name', __( 'Nombre de la empresa', '8digits-factura-for-woocommerce' ), array( $this, 'field_company_name' ), 'eightdigits_factura_section_company' );
		$this->add_field( 'nif', __( 'NIF / CIF', '8digits-factura-for-woocommerce' ), array( $this, 'field_nif' ), 'eightdigits_factura_section_company' );
		$this->add_field( 'address', __( 'Direccion', '8digits-factura-for-woocommerce' ), array( $this, 'field_address' ), 'eightdigits_factura_section_company' );
		$this->add_field( 'postal_code', __( 'Codigo postal', '8digits-factura-for-woocommerce' ), array( $this, 'field_postal_code' ), 'eightdigits_factura_section_company' );
		$this->add_field( 'city', __( 'Ciudad', '8digits-factura-for-woocommerce' ), array( $this, 'field_city' ), 'eightdigits_factura_section_company' );
		$this->add_field( 'province', __( 'Provincia', '8digits-factura-for-woocommerce' ), array( $this, 'field_province' ), 'eightdigits_factura_section_company' );
		$this->add_field( 'phone', __( 'Telefono', '8digits-factura-for-woocommerce' ), array( $this, 'field_phone' ), 'eightdigits_factura_section_company' );
		$this->add_field( 'email', __( 'Email de contacto', '8digits-factura-for-woocommerce' ), array( $this, 'field_email' ), 'eightdigits_factura_section_company' );
		add_settings_section(
			'eightdigits_factura_section_invoice',
			__( 'Configuracion de facturas', '8digits-factura-for-woocommerce' ),
			'__return_false',
			'eightdigits_factura_settings'
		);

		$this->add_field( 'invoice_prefix', __( 'Prefijo de factura', '8digits-factura-for-woocommerce' ), array( $this, 'field_invoice_prefix' ), 'eightdigits_factura_section_invoice' );
		$this->add_field( 'series_start', __( 'Numero de inicio de serie', '8digits-factura-for-woocommerce' ), array( $this, 'field_series_start' ), 'eightdigits_factura_section_invoice' );
		$this->add_field( 'default_iva', __( 'IVA por defecto', '8digits-factura-for-woocommerce' ), array( $this, 'field_default_iva' ), 'eightdigits_factura_section_invoice' );
		$this->add_field( 'trigger_statuses', __( 'Generar factura al pasar a', '8digits-factura-for-woocommerce' ), array( $this, 'field_trigger_statuses' ), 'eightdigits_factura_section_invoice' );
		$this->add_field( 'attach_pdf', __( 'Adjuntar PDF al email', '8digits-factura-for-woocommerce' ), array( $this, 'field_attach_pdf' ), 'eightdigits_factura_section_invoice' );
	}

	/**
	 * Add a settings field.
	 */
	private function add_field( string $key, string $label, callable $callback, string $section ): void {
		add_settings_field(
			'eightdigits_factura_' . $key,
			$label,
			$callback,
			'eightdigits_factura_settings',
			$section
		);
	}

	/**
	 * Option schema.
	 *
	 * @return array<string,array{type:string,sanitize_callback:string,default:mixed}>
	 */
	private function get_option_schema(): array {
		return array(
			'eightdigits_factura_company_name'     => array( 'type' => 'string', 'sanitize_callback' => 'sanitize_text', 'default' => '' ),
			'eightdigits_factura_nif'              => array( 'type' => 'string', 'sanitize_callback' => 'sanitize_nif', 'default' => '' ),
			'eightdigits_factura_address'          => array( 'type' => 'string', 'sanitize_callback' => 'sanitize_textarea', 'default' => '' ),
			'eightdigits_factura_postal_code'      => array( 'type' => 'string', 'sanitize_callback' => 'sanitize_postal_code', 'default' => '' ),
			'eightdigits_factura_city'             => array( 'type' => 'string', 'sanitize_callback' => 'sanitize_text', 'default' => '' ),
			'eightdigits_factura_province'         => array( 'type' => 'string', 'sanitize_callback' => 'sanitize_province', 'default' => '' ),
			'eightdigits_factura_phone'            => array( 'type' => 'string', 'sanitize_callback' => 'sanitize_text', 'default' => '' ),
			'eightdigits_factura_email'            => array( 'type' => 'string', 'sanitize_callback' => 'sanitize_email_option', 'default' => get_option( 'admin_email' ) ),
			'eightdigits_factura_invoice_prefix'   => array( 'type' => 'string', 'sanitize_callback' => 'sanitize_invoice_prefix', 'default' => 'F' ),
			'eightdigits_factura_series_start'     => array( 'type' => 'integer', 'sanitize_callback' => 'sanitize_series_start', 'default' => 1 ),
			'eightdigits_factura_default_iva'      => array( 'type' => 'number', 'sanitize_callback' => 'sanitize_default_iva', 'default' => 21 ),
			'eightdigits_factura_trigger_statuses' => array( 'type' => 'array', 'sanitize_callback' => 'sanitize_trigger_statuses', 'default' => array( 'wc-processing' ) ),
			'eightdigits_factura_attach_pdf'       => array( 'type' => 'boolean', 'sanitize_callback' => 'sanitize_checkbox', 'default' => true ),
		);
	}

	public function field_company_name(): void {
		printf( '<input type="text" class="regular-text" name="eightdigits_factura_company_name" value="%s">', esc_attr( get_option( 'eightdigits_factura_company_name', '' ) ) );
	}

	public function field_nif(): void {
		printf( '<input type="text" class="regular-text eightdigits-factura-nif-input" name="eightdigits_factura_nif" value="%s"><span class="eightdigits-factura-nif-msg" style="margin-left:8px;"></span>', esc_attr( get_option( 'eightdigits_factura_nif', '' ) ) );
	}

	public function field_address(): void {
		printf( '<textarea class="regular-text" rows="3" name="eightdigits_factura_address">%s</textarea>', esc_textarea( get_option( 'eightdigits_factura_address', '' ) ) );
	}

	public function field_postal_code(): void {
		printf( '<input type="text" class="small-text" maxlength="5" name="eightdigits_factura_postal_code" value="%s">', esc_attr( get_option( 'eightdigits_factura_postal_code', '' ) ) );
	}

	public function field_city(): void {
		printf( '<input type="text" class="regular-text" name="eightdigits_factura_city" value="%s">', esc_attr( get_option( 'eightdigits_factura_city', '' ) ) );
	}

	public function field_province(): void {
		$current = get_option( 'eightdigits_factura_province', '' );
		echo '<select name="eightdigits_factura_province">';
		echo '<option value="">' . esc_html__( '- Seleccionar provincia -', '8digits-factura-for-woocommerce' ) . '</option>';
		foreach ( self::PROVINCES as $province ) {
			printf( '<option value="%s"%s>%s</option>', esc_attr( $province ), selected( $current, $province, false ), esc_html( $province ) );
		}
		echo '</select>';
	}

	public function field_phone(): void {
		printf( '<input type="tel" class="regular-text" name="eightdigits_factura_phone" value="%s">', esc_attr( get_option( 'eightdigits_factura_phone', '' ) ) );
	}

	public function field_email(): void {
		printf( '<input type="email" class="regular-text" name="eightdigits_factura_email" value="%s">', esc_attr( get_option( 'eightdigits_factura_email', get_option( 'admin_email' ) ) ) );
	}

	public function field_invoice_prefix(): void {
		$value  = get_option( 'eightdigits_factura_invoice_prefix', 'F' );
		$year   = gmdate( 'Y' );
		$prefix = $value ?: 'F';
		printf(
			'<input type="text" id="eightdigits_factura_invoice_prefix" class="small-text" maxlength="10" name="eightdigits_factura_invoice_prefix" value="%s"><p class="description">%s <code id="eightdigits-factura-prefix-preview">%s</code></p>',
			esc_attr( $value ),
			esc_html__( 'Ejemplo:', '8digits-factura-for-woocommerce' ),
			esc_html( $prefix . '-' . $year . '-0001' )
		);
	}

	public function field_series_start(): void {
		$value  = (int) get_option( 'eightdigits_factura_series_start', 1 );
		$locked = EightDigits_Factura_Invoice::count() > 0;
		printf(
			'<input type="number" class="small-text" min="1" step="1" name="eightdigits_factura_series_start" value="%d"%s><p class="description">%s</p>',
			absint( $value ),
			disabled( $locked, true, false ), // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- disabled() returns a fixed HTML attribute.
			esc_html( $locked ? __( 'No se puede modificar: ya existen facturas en esta serie.', '8digits-factura-for-woocommerce' ) : __( 'Se aplica cuando comienza la primera serie del plugin.', '8digits-factura-for-woocommerce' ) )
		);
	}

	public function field_default_iva(): void {
		$current = get_option( 'eightdigits_factura_default_iva', '21' );
		$rates   = array( '0', '4', '10', '21' );
		echo '<select name="eightdigits_factura_default_iva">';
		foreach ( $rates as $rate ) {
			printf( '<option value="%s"%s>%s%%</option>', esc_attr( $rate ), selected( $current, $rate, false ), esc_html( $rate ) );
		}
		echo '</select>';
	}

	public function field_trigger_statuses(): void {
		$current = (array) get_option( 'eightdigits_factura_trigger_statuses', array( 'wc-processing' ) );
		foreach ( self::TRIGGER_STATUSES as $status ) {
			printf(
				'<label><input type="checkbox" name="eightdigits_factura_trigger_statuses[]" value="%s"%s> %s</label><br>',
				esc_attr( $status ),
				checked( in_array( $status, $current, true ), true, false ),
				esc_html( wc_get_order_status_name( str_replace( 'wc-', '', $status ) ) )
			);
		}
	}

	public function field_attach_pdf(): void {
		printf(
			'<label><input type="checkbox" name="eightdigits_factura_attach_pdf" value="1"%s> %s</label>',
			checked( (bool) get_option( 'eightdigits_factura_attach_pdf', true ), true, false ),
			esc_html__( 'Adjuntar el PDF a los emails del pedido.', '8digits-factura-for-woocommerce' )
		);
	}

	public function sanitize_text( $value ): string {
		return sanitize_text_field( (string) $value );
	}

	public function sanitize_textarea( $value ): string {
		return sanitize_textarea_field( (string) $value );
	}

	public function sanitize_nif( $value ): string {
		return strtoupper( sanitize_text_field( (string) $value ) );
	}

	public function sanitize_postal_code( $value ): string {
		return substr( preg_replace( '/\D+/', '', (string) $value ), 0, 5 );
	}

	public function sanitize_province( $value ): string {
		$value = sanitize_text_field( (string) $value );
		return in_array( $value, self::PROVINCES, true ) ? $value : '';
	}

	public function sanitize_email_option( $value ): string {
		return sanitize_email( (string) $value );
	}

	public function sanitize_invoice_prefix( $value ): string {
		$value = EightDigits_Factura_Numbering::normalize_series_prefix( (string) $value );
		return '' !== $value ? $value : 'F';
	}

	public function sanitize_series_start( $value ): int {
		if ( EightDigits_Factura_Invoice::count() > 0 ) {
			return (int) get_option( 'eightdigits_factura_series_start', 1 );
		}
		return max( 1, absint( $value ) );
	}

	public function sanitize_default_iva( $value ): float {
		return max( 0, min( 100, (float) $value ) );
	}

	public function sanitize_trigger_statuses( $value ): array {
		$value      = is_array( $value ) ? $value : array();
		$sanitized  = array();
		foreach ( $value as $status ) {
			$status = sanitize_text_field( (string) $status );
			if ( in_array( $status, self::TRIGGER_STATUSES, true ) ) {
				$sanitized[] = $status;
			}
		}

		return ! empty( $sanitized ) ? array_values( array_unique( $sanitized ) ) : array( 'wc-processing' );
	}

	public function sanitize_checkbox( $value ): bool {
		return ! empty( $value );
	}
}