package model

import (
	"fmt"

	"modelRT/constants"
)

// MeasurementTypeString converts measurement.type from PostgreSQL to the
// electric-element type stored in the Redis data-object hash.
func MeasurementTypeString(measurementType int16) (string, error) {
	switch measurementType {
	case constants.MeasurementTypeTelemetry:
		return "TM", nil
	case constants.MeasurementTypeTelesignal:
		return "TS", nil
	case constants.MeasurementTypeTelecommand:
		return "TC", nil
	case constants.MeasurementTypeTeleadjusting:
		return "TA", nil
	case constants.MeasurementTypeSetpoint:
		return "SP", nil
	default:
		return "", fmt.Errorf("unsupported measurement type %d", measurementType)
	}
}

func integerJSONValue(value any) (int, error) {
	switch typed := value.(type) {
	case int:
		return typed, nil
	case int8:
		return int(typed), nil
	case int16:
		return int(typed), nil
	case int32:
		return int(typed), nil
	case int64:
		return int(typed), nil
	case float32:
		converted := int(typed)
		if typed != float32(converted) {
			return 0, fmt.Errorf("expected integer, got %v", typed)
		}
		return converted, nil
	case float64:
		converted := int(typed)
		if typed != float64(converted) {
			return 0, fmt.Errorf("expected integer, got %v", typed)
		}
		return converted, nil
	default:
		return 0, fmt.Errorf("expected integer, got %T", value)
	}
}