<?php

class WattpilotGen1Profile
{
    public const DEVICE_PROFILE = 'fronius_wattpilot_gen1';

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

    public static function isWattpilotBoot(array $payload): bool
    {
        $vendor = strtolower((string)($payload['chargePointVendor'] ?? ''));
        $model = strtolower((string)($payload['chargePointModel'] ?? ''));
        return strpos($vendor, 'fronius') !== false || strpos($model, 'wattpilot') !== false;
    }

    public static function buildChargingProfile(array $setpoint, int $profileId): array
    {
        $currentA = max(0.0, (float)($setpoint['effectiveCurrentA'] ?? 0.0));
        $validTo = gmdate('Y-m-d\TH:i:s\Z', time() + 120);
        $transactionId = (string)($setpoint['transactionId'] ?? '');
        $purpose = $transactionId !== '' ? 'TxProfile' : 'TxDefaultProfile';

        $profile = [
            'connectorId' => (int)($setpoint['connectorId'] ?? 1),
            'csChargingProfiles' => [
                'chargingProfileId' => $profileId,
                'stackLevel' => 0,
                'chargingProfilePurpose' => $purpose,
                'chargingProfileKind' => 'Absolute',
                'validTo' => $validTo,
                'chargingSchedule' => [
                    'duration' => 120,
                    'chargingRateUnit' => 'A',
                    'chargingSchedulePeriod' => [
                        [
                            'startPeriod' => 0,
                            'limit' => round($currentA, 1)
                        ]
                    ]
                ]
            ]
        ];

        if ($transactionId !== '') {
            $profile['csChargingProfiles']['transactionId'] = is_numeric($transactionId) ? (int)$transactionId : $transactionId;
        }

        return $profile;
    }

    public static function supportedMeasurands(): array
    {
        return [
            'Power.Active.Import',
            'Energy.Active.Import.Register',
            'Voltage',
            'Current.Import'
        ];
    }
}

?>