<?php
namespace Bookzenix;

defined( 'ABSPATH' ) || exit;

/**
 * Typed access to plugin settings stored in a single option.
 */
class Settings {

	public static function defaults() {
		return array(
			'company_name'        => get_bloginfo( 'name' ),
			'company_email'       => get_option( 'admin_email' ),
			'company_phone'       => '',
			'currency'            => 'USD',
			'currency_symbol'     => '$',
			'time_slot_step'      => 30,     // minutes between offered start times
			'min_notice'          => 120,    // minutes before booking allowed
			'max_advance_days'    => 60,
			'default_status'      => 'approved', // or pending
			'primary_color'       => '#0f766e',
			'accent_color'        => '#f59e0b',
			'font_family'         => 'Manrope, system-ui, sans-serif',
			'design'              => array(), // see Design::defaults()
			'require_phone'       => false,
			'notifications'       => array(
				'customer_approved'  => true,
				'customer_pending'   => true,
				'customer_canceled'  => true,
				'employee_new'       => true,
				'admin_new'          => true,
			),
			'templates'           => Notifications::default_templates(),
		);
	}

	public static function all() {
		$saved = get_option( 'bookzenix_settings', array() );
		return self::merge( self::defaults(), is_array( $saved ) ? $saved : array() );
	}

	public static function get( $key, $fallback = null ) {
		$all = self::all();
		return array_key_exists( $key, $all ) ? $all[ $key ] : $fallback;
	}

	public static function update( array $values ) {
		$merged = self::merge( self::all(), $values );
		update_option( 'bookzenix_settings', $merged );
		return $merged;
	}

	/** Recursive merge where $over wins but only for known structure. */
	private static function merge( array $base, array $over ) {
		foreach ( $over as $k => $v ) {
			if ( isset( $base[ $k ] ) && is_array( $base[ $k ] ) && is_array( $v ) && self::is_assoc( $base[ $k ] ) ) {
				$base[ $k ] = self::merge( $base[ $k ], $v );
			} else {
				$base[ $k ] = $v;
			}
		}
		return $base;
	}

	private static function is_assoc( array $a ) {
		return array() !== $a && array_keys( $a ) !== range( 0, count( $a ) - 1 );
	}

	/** Settings safe to expose to the public booking widget. */
	public static function public_settings() {
		$s   = self::all();
		$out = array(
			'company_name'    => $s['company_name'],
			'currency'        => $s['currency'],
			'currency_symbol' => $s['currency_symbol'],
			'primary_color'   => $s['primary_color'],
			'accent_color'    => $s['accent_color'],
			'font_family'     => $s['font_family'],
			'require_phone'   => (bool) $s['require_phone'],
		);
		return $out;
	}
}