<?php
namespace Moko\Component\MokoSuiteField\Api\Controller;

defined('_JEXEC') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\MVC\Controller\BaseController;

/**
 * Scheduling + Daily Route API.
 *
 * GET    /schedule/slots          — Available appointment slots
 * POST   /schedule/book           — Schedule a work order
 * GET    /schedule/today          — Today's schedule for all techs
 * GET    /schedule/tech/{id}      — Single tech's daily route
 */
class FieldSchedulingController extends BaseController
{
	private function requireAuth(string $action = 'core.manage'): void
	{
		$user = Factory::getApplication()->getIdentity();
		if (!$user || $user->guest || (!$user->authorise('core.admin') && !$user->authorise($action, 'com_mokosuitefield'))) {
			http_response_code(403);
			echo json_encode(['error' => 'Access denied']);
			Factory::getApplication()->close();
		}
	}

	public function availableSlots(): void
	{
		$this->requireAuth();
		$input = Factory::getApplication()->getInput();

		$slots = \Moko\Plugin\System\MokoSuiteField\Helper\SchedulingHelper::getAvailableSlots(
			$input->getString('date', date('Y-m-d')),
			$input->getString('trade', 'general'),
			$input->getInt('duration', 60)
		);

		$this->sendJson($slots);
	}

	public function bookSlot(): void
	{
		$this->requireAuth('core.create');
		$input = Factory::getApplication()->getInput();

		$result = \Moko\Plugin\System\MokoSuiteField\Helper\SchedulingHelper::scheduleWorkOrder(
			$input->getInt('wo_id', 0),
			$input->getString('date', ''),
			$input->getString('time', ''),
			$input->getInt('tech_id', 0) ?: null
		);

		$this->sendJson(['success' => $result]);
	}

	public function todaySchedule(): void
	{
		$this->requireAuth();
		$schedule = \Moko\Plugin\System\MokoSuiteField\Helper\SchedulingHelper::getTodaySchedule();
		$this->sendJson($schedule);
	}

	public function techRoute(): void
	{
		$this->requireAuth();
		$techId = Factory::getApplication()->getInput()->getInt('tech_id', 0);
		$date = Factory::getApplication()->getInput()->getString('date', date('Y-m-d'));

		$route = \Moko\Plugin\System\MokoSuiteField\Helper\RouteHelper::getTechRoute($techId, $date);
		$metrics = \Moko\Plugin\System\MokoSuiteField\Helper\RouteHelper::estimateRouteMetrics($techId, $date);

		$this->sendJson(['route' => $route, 'metrics' => $metrics]);
	}

	private function sendJson(mixed $data): void
	{
		header('Content-Type: application/json; charset=utf-8');
		echo json_encode($data, JSON_THROW_ON_ERROR | JSON_UNESCAPED_UNICODE);
		Factory::getApplication()->close();
	}
}