Untitled

var distance:Double = 0.0
    var area:Double = 0.0
    var originalArea: Double = 0.0
    var originalDistanceUnit: String = "Meter"
    var originalAreaUnit: String = "Square Meter"
     @Composable
    fun MainScreenComposable() {
        val context = LocalContext.current
        val coroutineScope = rememberCoroutineScope()
        ArcGISEnvironment.applicationContext = context.applicationContext
        val mapType: MutableState<BasemapStyle> = remember { mutableStateOf(BasemapStyle.ArcGISTopographic) }
        lifeCycleOwner = LocalLifecycleOwner.current

        val locationDisplay = rememberLocationDisplay().apply {
            setAutoPanMode(LocationDisplayAutoPanMode.Recenter)
        }

        val map = remember(mapType.value) {
            ArcGISMap(mapType.value).apply {
                initialViewpoint = Viewpoint(
                    latitude = 13.0236, longitude = 80.1780, scale = 72000.0
                )
            }
        }

        var cumulativeDistance by remember { mutableStateOf(0.0) }
        var distanceText by remember { mutableStateOf(" ") }
//        var distance:Double =0.0
        var distance by remember { mutableStateOf(" ") }
        var areaText by remember { mutableStateOf(" ") } // Added state for area text
        var requestPermissions by remember { mutableStateOf(false) }
        var selectedGeometryType by remember { mutableStateOf("Distance") }
        var selectedUnit by remember { mutableStateOf("Meter") }
        var pointsDrawn by remember { mutableStateOf(false) }
        var isCalloutVisible by remember { mutableStateOf(true) }
        val distanceUnits = mutableListOf("Meter", "Kilometre", "Foot", "Yard")
        when (selectedGeometryType) {
                                "Area" -> {
                                    val pointGraphic = Graphic(mapPoint, pointSymbol)
                                    graphicsOverlay.graphics.add(pointGraphic)
                                    relatedGraphics.add(pointGraphic)

                                    polygonPoints.add(mapPointNotNull)
                                    if (polygonPoints.size > 1) {
                                        val polyline = Polyline(polygonPoints)
                                        val lineGraphic = Graphic(polyline, lineSymbol)
                                        graphicsOverlay.graphics.add(lineGraphic)
                                        relatedGraphics.add(lineGraphic)

                                        // Remove previous text symbols
                                        graphicsOverlay.graphics.removeAll { it.symbol is TextSymbol }

                                        if (polygonPoints.size > 2) {
                                            val polygon = Polygon(polygonPoints)
                                            val polygonGraphic = Graphic(polygon, polygonSymbol)
                                            graphicsOverlay.graphics.add(polygonGraphic)
                                            relatedGraphics.add(polygonGraphic)

                                            val areaValue = GeometryEngine.areaGeodetic(
                                                polygon,
                                                getAreaUnit(selectedUnit),
                                                GeodeticCurveType.Geodesic
                                            )
                                            areaText = formatMeasurementValue(areaValue, selectedUnit) // Update area text

                                        } else {
                                            val distanceValue = GeometryEngine.lengthGeodetic(
                                                polyline,
                                                getLinearUnit(selectedUnit),
                                                GeodeticCurveType.Geodesic
                                            )
                                            distanceText = formatMeasurementValue(distanceValue, selectedUnit) // Update area text
                                        }
                                    }
                                }

                                "Distance" -> {
                                    val pointGraphic = Graphic(mapPointNotNull, pointSymbol)
                                    graphicsOverlay.graphics.add(pointGraphic)
                                    relatedGraphics.add(pointGraphic)

                                    linePoints.add(mapPointNotNull)

                                    if (linePoints.size > 1) {
                                        val polyline = Polyline(linePoints)
                                        val lineGraphic = Graphic(polyline, lineSymbol)
                                        graphicsOverlay.graphics.add(lineGraphic)
                                        relatedGraphics.add(lineGraphic)

                                        val distanceValue = GeometryEngine.lengthGeodetic(
                                            polyline,
                                            getLinearUnit(selectedUnit),
                                            GeodeticCurveType.Geodesic
                                        )
                                        cumulativeDistance += distanceValue
                                    }

                                    // Remove previous text symbols
                                    graphicsOverlay.graphics.removeAll { it.symbol is TextSymbol }

                                    // Only add the text symbol at the last point
                                    if (linePoints.size > 1) {
                                        linePoints.last()
                                        distanceText = formatMeasurementValue(cumulativeDistance, selectedUnit)
                                        TextSymbol().apply {
                                            text = distanceText as String
                                            color = com.arcgismaps.Color.fromRgba(0, 0, 0, 255) // Black color
                                            size = 15f
                                        }
                                    }
                                }
                            }
                            graphicsStack.add(relatedGraphics)
                        }
                

            {
                calloutLocation?.let { location ->

                        Callout(location = location, offset = Offset(0f, -50f)) {
                            Text(
                                text = if (selectedGeometryType == "Area") {

                                    "$area $originalAreaUnit"

                                } else {
//                                    "$distanceText $originalDistanceUnit"
                                    distanceText
                                }
                            )
                    }
                }
            }
            
    private fun getAreaUnit(unit: String): AreaUnit? {
        return when (unit) {
            "Square Meter" -> AreaUnit.squareMeters
            "Square Kilometer" -> AreaUnit.squareKilometers
            "Acre" -> AreaUnit(AreaUnitId.Acres)
            "Hectare" -> AreaUnit(AreaUnitId.Hectares)
            "Square Foot" -> AreaUnit.squareFeet
            else -> null
        }
    }

    private fun getLinearUnit(unit: String): LinearUnit? {
        return when (unit) {
            "Meter" -> LinearUnit.meters
            "Kilometre" -> LinearUnit.kilometers
            "Foot" -> LinearUnit.feet
            "Yard" -> LinearUnit(LinearUnitId.Yards)
            else -> null
        }
    }

    private fun formatMeasurementValue(value: Double, unit: String): String {
//        return String.format("%.2f %s", value, unit)
        return "$value $unit"
    } Text(text = "Select Unit", color = Color.Blue)
                        units.forEach { unit ->
                            Row(verticalAlignment = Alignment.CenterVertically) {
                                Checkbox(
                                    checked = selectedUnit == unit,
                                    onCheckedChange = {
                                        if (it) {
                                            onUnitChange(unit)
                                            if (selectedGeometryType == "Distance") {
                                                updateDistanceUnits(unit)
                                            } else if (selectedGeometryType == "Area") {
                                                updateAreaUnits(originalArea, unit)
                                            }
                                        }
                                    }
                                )
                                Text(text = unit, modifier = Modifier.padding(4.dp))
                            }
                        }
                    }
                }
            }
        }
    }





    private fun updateDistanceUnits(unit: String) {

        val baseDistance = convertDistanceToBaseUnit(distance, originalDistanceUnit)
        distance = when (unit) {
            "Meter" -> convertToMeters(baseDistance)
            "Kilometre" -> convertToKilometres(baseDistance)
            "Foot" -> convertToFeet(baseDistance)
            "Yard" -> convertToYards(baseDistance)
            else -> baseDistance
        }
        originalDistanceUnit = unit
//        Log.d(" tag", "updateDistanceUnits: " + originalDistanceUnit.toString())


    }

    private fun convertDistanceToBaseUnit(distance: Double, originalDistanceUnit: String): Double {
        return when (originalDistanceUnit) {
            "Meter" -> distance
            "Kilometre" -> distance / 1000
            "Foot" -> distance / 3.28084
            "Yard" -> distance / 1.09361
            else -> distance
        }
    }

    private fun convertToMeters(distance: Double): Double {
        return distance
    }
    private fun convertToKilometres(distance: Double): Double {
        return distance / 1000
    }
    private fun convertToFeet(distance: Double): Double {
        return distance * 3.28084
    }
    private fun convertToYards(distance: Double): Double {
        return distance * 1.09361
    }


    private fun updateAreaUnits(value: Double, unit: String) {
        val baseArea = convertAreaToBaseUnit(value, originalAreaUnit)
        area = when (unit) {
            "Acre" -> convertToAcres(baseArea)
            "Hectare" -> convertToHectares(baseArea)
            "Square Meter" -> convertToSquareMeters(baseArea)
            "Square Kilometer" -> convertToSquareKilometers(baseArea)
            "Square Foot" -> convertToSquareFeet(baseArea)
            else -> baseArea
        }
        originalAreaUnit = unit
//        updateAreaText("$area $unit")
    }

    private fun convertAreaToBaseUnit(value: Double, originalAreaUnit: String): Double {
        return when (originalAreaUnit) {
            "Square Meter" -> value
            "Square Kilometer" -> value * 1_000_000
            "Square Foot" -> value / 10.7639
            "Acre" -> value / 0.000247105
            "Hectare" -> value / 0.0001
            else -> value
        }
    }

    private fun convertToSquareMeters(area: Double): Double {
        return area
    }

    private fun convertToSquareKilometers(area: Double): Double {
        return area / 1_000_000
    }

    private fun convertToSquareFeet(area: Double): Double {
        return area * 10.7639
    }

    private fun convertToHectares(area: Double): Double {
        return area * 0.0001
    }

    private fun convertToAcres(area: Double): Double {
        return area * 0.000247105
    }

        val areaUnits = listOf("Acre", "Hectare", "Square Meter", "Square Kilometer", "Square Foot")

        if (selectedGeometryType == "Area" && selectedUnit !in areaUnits) {
            selectedUnit = "Acre"
        }