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<?php
class Output {
    static function createMapping($db, VehicleTypes $vehicleTypes, $saveConfig = FALSE) {
        $mapping = [];
        foreach($db->getAll() as $vehicle) {
            $mapping[$vehicle['id']] = $vehicleTypes->getByNumber($vehicle['num']);
        }
        
        if($saveConfig) {
            $json = json_encode($mapping);
            if(!file_put_contents($saveConfig['result_temp'], $json)) {
                throw new Exception('Result save failed');
            }
            rename($saveConfig['result_temp'], $saveConfig['result']);
        }
        
        return $mapping;
    }
    
    function createVehiclesList($trips, $mapping, $saveConfig = FALSE) {
        $lines = [];
        $vehicles = [];
        foreach($trips as $trip) {
            $vehicle = $mapping[$trip['id']] ?? [];
            $vehicle += ['trip' => $trip['id']];
            $lines[$trip['line']][] = [
                'trip' => $trip,
                'vehicle' => $vehicle,
            ];
            $vehicles[$vehicle['type'] ?? '?'][] = $vehicle;
        }
        foreach($lines as &$line) {
            usort($line, function($a, $b) {
                return (substr($a['vehicle']['num'] ?? '', 2) <=> substr($b['vehicle']['num'] ?? '', 2)); 
            });
        }
        unset($line);
        ksort($lines);
        foreach($vehicles as &$vehicle) {
            usort($vehicle, function($a, $b) {
                return (substr($a['num'] ?? '', 2) <=> substr($b['num'] ?? '', 2));
            });
        }
        unset($vehicle);
        ksort($vehicles);
        
        if($saveConfig) {
            $twigLoader = new \Twig\Loader\FilesystemLoader(__DIR__.'/../templates');
            $twig = new \Twig\Environment($twigLoader);
            
            $vehiclesHtml = $twig->render('vehicles.html', [
                'lines' => $lines,
                'vehicles' => $vehicles,
                'prefix' => $saveConfig['prefix'],
            ]);
            if(!file_put_contents($saveConfig['result_vehicles_temp'], $vehiclesHtml)) {
                throw new Exception('Vehicles save failed');
            }
            rename($saveConfig['result_vehicles_temp'], $saveConfig['result_vehicles']);
        }
        
        return $lines;
    }
}