<?php
/**
 * Builds automation context from current subject state (docs/20 §6).
 *
 * @package Bookline
 */

declare( strict_types=1 );

namespace Bookline\Application\Automation;

use Bookline\Domain\Automation\AutomationContext;
use Bookline\Domain\Automation\SubjectType;
use Bookline\Domain\Booking\Booking;
use Bookline\Domain\Booking\BookingStatus;
use Bookline\Domain\Customer\Customer;
use Bookline\Domain\OrderIntent\OrderIntent;
use Bookline\Domain\Shared\Clock;
use DateTimeZone;

/**
 * Snapshot / refresh field bag.
 *
 * @since 0.1.0
 */
final class AutomationContextFactory {

	/**
	 * Constructor.
	 *
	 * @param Clock $clock Clock.
	 */
	public function __construct(
		private readonly Clock $clock,
	) {}

	/**
	 * Context for a booking subject.
	 *
	 * @param string        $event     Event identifier.
	 * @param string        $event_id  Delivery id.
	 * @param Booking       $booking   Booking.
	 * @param Customer|null $customer Customer.
	 * @param bool          $is_test   Test run.
	 *
	 * @since 0.1.0
	 */
	public function for_booking( string $event, string $event_id, Booking $booking, ?Customer $customer = null, bool $is_test = false ): AutomationContext {
		$created = $booking->created_at();
		$start   = $booking->start_utc();
		$lead    = (int) max( 0, ( $start->getTimestamp() - $created->getTimestamp() ) / 60 );
		$zone    = new DateTimeZone( $booking->timezone()->to_string() );
		$local   = $start->setTimezone( $zone );

		$fields = [
			'service_id'           => $booking->service_id(),
			'agent_id'             => $booking->agent_id() ?? 0,
			'location_id'          => $booking->location_id() ?? 0,
			'booking_status'       => $booking->status()->value,
			'price_minor'          => $booking->price()->amount_minor(),
			'marketing_consent'    => $customer instanceof Customer ? $customer->marketing_consent() : false,
			'lead_time_minutes'    => $lead,
			'has_coupon'           => false,
			'payment_status'       => '',
			'day_of_week'          => (int) $local->format( 'N' ),
			'time_of_day_minutes'  => ( (int) $local->format( 'G' ) * 60 ) + (int) $local->format( 'i' ),
			'is_new_customer'      => false,
			'booking_count'        => 0,
			'no_show_count'        => 0,
			'details_step_reached' => false,
		];

		$ctx = new AutomationContext(
			$event_id,
			$event,
			SubjectType::Booking,
			(int) $booking->id(),
			$booking->customer_id(),
			$this->clock->now(),
			$fields,
			0,
			[],
			$is_test
		);
		unset( $fields );
		return $ctx;
	}

	/**
	 * Context for a customer subject.
	 *
	 * @param string   $event     Event.
	 * @param string   $event_id  Delivery id.
	 * @param Customer $customer  Customer.
	 * @param bool     $is_test   Test run.
	 *
	 * @since 0.1.0
	 */
	public function for_customer( string $event, string $event_id, Customer $customer, bool $is_test = false ): AutomationContext {
		return new AutomationContext(
			$event_id,
			$event,
			SubjectType::Customer,
			(int) $customer->id(),
			$customer->id(),
			$this->clock->now(),
			[
				'marketing_consent'    => $customer->marketing_consent(),
				'is_new_customer'      => true,
				'booking_count'        => 0,
				'no_show_count'        => 0,
				'details_step_reached' => false,
				'service_id'           => 0,
				'agent_id'             => 0,
				'price_minor'          => 0,
			],
			0,
			[],
			$is_test
		);
	}

	/**
	 * Context for an order intent.
	 *
	 * @param string      $event    Event.
	 * @param string      $event_id Delivery id.
	 * @param OrderIntent $intent   Intent.
	 * @param bool        $is_test  Test run.
	 *
	 * @since 0.1.0
	 */
	public function for_intent( string $event, string $event_id, OrderIntent $intent, bool $is_test = false ): AutomationContext {
		$completed = $intent->completed_steps() ?? [];
		$details   = in_array( 'details', $completed, true ) || 'details' === $intent->current_step();
		$draft     = $intent->customer_draft() ?? [];
		$consent   = isset( $draft['marketing_consent'] ) && true === $draft['marketing_consent'];
		$totals    = $intent->totals() ?? [];
		$service   = isset( $totals['service_id'] ) ? (int) $totals['service_id'] : 0;
		$price     = isset( $totals['total_minor'] ) ? (int) $totals['total_minor'] : 0;

		return new AutomationContext(
			$event_id,
			$event,
			SubjectType::Intent,
			(int) $intent->id(),
			null,
			$this->clock->now(),
			[
				'service_id'           => $service,
				'agent_id'             => isset( $totals['agent_id'] ) ? (int) $totals['agent_id'] : 0,
				'location_id'          => isset( $totals['location_id'] ) ? (int) $totals['location_id'] : 0,
				'price_minor'          => $price,
				'marketing_consent'    => $consent,
				'details_step_reached' => $details,
				'has_coupon'           => null !== $intent->coupon_code() && '' !== $intent->coupon_code(),
				'lead_time_minutes'    => 0,
			],
			0,
			[],
			$is_test
		);
	}

	/**
	 * Whether a booking is void for fresh-context execution.
	 *
	 * @param Booking $booking Booking.
	 *
	 * @since 0.1.0
	 */
	public function booking_is_void( Booking $booking ): bool {
		if ( null !== $booking->deleted_at() ) {
			return true;
		}
		return in_array(
			$booking->status(),
			[ BookingStatus::Cancelled, BookingStatus::Rescheduled ],
			true
		);
	}
}