<?php

class CapabilityModel
{
    public static function defaults(): array
    {
        return [
            'smartCharging' => false,
            'meterValues' => false,
            'phaseMetering' => false,
            'currentImportPerPhase' => false,
            'voltagePerPhase' => false,
            'powerImport' => false,
            'powerExport' => false,
            'energyImport' => false,
            'energyExport' => false,
            'numberPhases' => false,
            'phaseToUse' => false,
            'phaseSwitching' => false,
            'dataTransfer' => false,
            'remoteStartStop' => false,
            'availability' => false,
            'simpleAmpereProfiles' => false,
            'getVariables' => false,
            'setVariables' => false,
            'transactionEvent' => false,
            'soc' => false,
            'temperature' => false,
            'signedMeterValue' => false,
            'bidirectional' => false
        ];
    }

    public static function detectFromBoot(string $version, array $payload): array
    {
        $capabilities = self::defaults();
        $capabilities['meterValues'] = true;

        if ($version === '2.0.1' || $version === '2.1') {
            $capabilities['getVariables'] = true;
            $capabilities['setVariables'] = true;
            $capabilities['transactionEvent'] = true;
            $capabilities['smartCharging'] = true;
        }

        if ($version === '2.1') {
            $capabilities['bidirectional'] = true;
            $capabilities['powerExport'] = true;
            $capabilities['energyExport'] = true;
        }

        if (isset($payload['chargingStation']['model']) || isset($payload['chargePointModel'])) {
            $capabilities['dataTransfer'] = true;
        }

        return $capabilities;
    }

    public static function merge(array $base, array $updates): array
    {
        return array_replace($base, array_intersect_key($updates, $base));
    }
}

?>