BloodGlucose.kt
/*
* Copyright 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.health.connect.client.units
/**
* Represents a unit of blood glucose level (glycaemia). Supported units:
*
* - mmol/L - see [BloodGlucose.millimolesPerLiter]
* - mg/dL - see [BloodGlucose.milligramsPerDeciliter]
**/
class BloodGlucose private constructor(
private val value: Double,
private val type: Type,
) : Comparable<BloodGlucose> {
/** Returns the blood glucose level in mmol/L. */
@get:JvmName("getMillimolesPerLiter")
val inMillimolesPerLiter: Double
get() = value * type.millimolesPerLiterPerUnit
/** Returns the blood glucose level concentration in mg/dL. */
@get:JvmName("getMilligramsPerDeciliter")
val inMilligramsPerDeciliter: Double
get() = get(type = Type.MILLIGRAMS_PER_DECILITER)
private fun get(type: Type): Double =
if (this.type == type) value else inMillimolesPerLiter / type.millimolesPerLiterPerUnit
/** Returns zero [BloodGlucose] of the same [Type]. */
internal fun zero(): BloodGlucose = ZEROS.getValue(type)
override fun compareTo(other: BloodGlucose): Int = if (type == other.type) {
value.compareTo(other.value)
} else {
inMillimolesPerLiter.compareTo(other.inMillimolesPerLiter)
}
/*
* Generated by the IDE: Code -> Generate -> "equals() and hashCode()".
*/
override fun equals(other: Any?): Boolean {
if (this === other) return true
if (other !is BloodGlucose) return false
if (value != other.value) return false
if (type != other.type) return false
return true
}
/*
* Generated by the IDE: Code -> Generate -> "equals() and hashCode()".
*/
override fun hashCode(): Int {
var result = value.hashCode()
result = 31 * result + type.hashCode()
return result
}
override fun toString(): String = "$value ${type.title}"
companion object {
private val ZEROS =
Type.values().associateWith { BloodGlucose(value = 0.0, type = it) }
/** Creates [BloodGlucose] with the specified value in mmol/L. */
@JvmStatic
fun millimolesPerLiter(value: Double): BloodGlucose =
BloodGlucose(value, Type.MILLIMOLES_PER_LITER)
/** Creates [BloodGlucose] with the specified value in mg/dL. */
@JvmStatic
fun milligramsPerDeciliter(value: Double): BloodGlucose =
BloodGlucose(value, Type.MILLIGRAMS_PER_DECILITER)
}
private enum class Type {
MILLIMOLES_PER_LITER {
override val millimolesPerLiterPerUnit: Double = 1.0
override val title: String get() = "mmol/L"
},
MILLIGRAMS_PER_DECILITER {
override val millimolesPerLiterPerUnit: Double = 1 / 18.0
override val title: String = "mg/dL"
};
abstract val millimolesPerLiterPerUnit: Double
abstract val title: String
}
}