feat: Add BMR and TDEE and automate them with the BMI (#154)

app/src/main/java/com/dzeio/openhealth/Settings.kt

@@ -35,6 +35,40 @@ object Settings {
      */
     const val STEPS_GOAL = "com.dzeio.open-health.steps.goal-daily"
 
+    /**
+     * The water intake size for the quick add
+     */
     const val WATER_INTAKE_SIZE = "com.dzeio.open-health.water.size"
+
+    /**
+     * the default value for the setting above
+     */
     const val WATER_INTAKE_SIZE_DEFAULT = 250
+
+    /**
+     * the user Height in CM
+     */
+    const val USER_HEIGHT = "com.dzeio.open-health.height"
+
+    /**
+     * the user birthday as an ISO8601 date
+     */
+    const val USER_BIRTHDAY = "com.dzeio.open-health.birthday"
+
+    /**
+     * the User age
+     */
+    const val USER_AGE = "com.dzeio.open-health.age"
+
+    /**
+     * the user biologicial age (0 = female, 1 = male)
+     */
+    const val USER_BIOLOGICAL_SEX = "com.dzeio.open-health.biological_sex"
+
+    /**
+     * the user activity level
+     *
+     * @see com.dzeio.openhealth.units.ActivityLevel
+     */
+    const val USER_ACTIVITY_LEVEL = "com.dzeio.open-health.activity_level"
 }

app/src/main/java/com/dzeio/openhealth/data/AppDatabase.kt

@@ -31,9 +31,10 @@ import java.util.zip.ZipInputStream
         Step::class,
         Food::class
     ],
-    version = 2,
+    version = 3,
     autoMigrations = [
-        AutoMigration(1, 2)
+        AutoMigration(1, 2),
+        AutoMigration(2, 3)
     ],
     exportSchema = true
 )

app/src/main/java/com/dzeio/openhealth/data/weight/Weight.kt

@@ -3,8 +3,10 @@ package com.dzeio.openhealth.data.weight
 import androidx.room.ColumnInfo
 import androidx.room.Entity
 import androidx.room.PrimaryKey
+import com.dzeio.openhealth.units.ActivityLevel
 import java.sql.Date
 import java.text.DateFormat.getDateInstance
+import kotlin.math.roundToInt
 
 @Entity()
 data class Weight(
@@ -68,12 +70,63 @@ data class Weight(
     /**
      * visceral fat in it's own unit?
      */
-    var visceralFat: Float? = null
+    var visceralFat: Float? = null,
+
+    /**
+     * the BMR rate
+     */
+    var basalMetabolicRate: Int? = null,
+
+    var totalDailyEnergyExpendure: Int? = null
 ) {
+
+    /**
+     * Run estimations to calculate & set different elements if they are not set
+     *
+     * @param height the height in `cm`
+     * @param age the user's age
+     * @param biologicalSex the user's biological sex (female = 0, male = 1)
+     * @param activityLevel the level of activity of the user
+     */
+    fun setItemsWithEstimation(
+        height: Int? = null,
+        age: Int? = null,
+        biologicalSex: Int? = null,
+        activityLevel: ActivityLevel? = null
+    ) {
+        if (bmi == null && height != null) {
+            val tmpHeight = (height / 100f)
+            bmi = weight / (tmpHeight * tmpHeight)
+        }
+
+        if (totalBodyWater == null && height != null) {
+            // female = 0, male = 1
+            totalBodyWater = (
+                if (biologicalSex == 0) {
+                    ((0.34454 * height) + (0.183809 * weight) - 35.270121)
+                } else {
+                    ((0.194786 * height) + (0.296785 * weight) - 14.012934)
+                }
+                ).toFloat()
+        }
+        if (basalMetabolicRate == null && height != null && age != null) {
+            basalMetabolicRate = (
+                if (biologicalSex == 0) {
+                    10 * weight + 6.25 * height - 5 * age - 161
+                } else {
+                    10 * weight + 6.25 * height - 5 * age + 5
+                }
+                ).toInt()
+        }
+        if (totalDailyEnergyExpendure == null && activityLevel != null && basalMetabolicRate != null) {
+            totalDailyEnergyExpendure = (basalMetabolicRate!! * activityLevel.modifier).roundToInt()
+        }
+    }
+
     fun formatTimestamp(): String = getDateInstance().format(Date(timestamp))
 
     override fun equals(other: Any?): Boolean {
-        if (!(other is Weight)) {
+        if (other !is Weight) {
             return super.equals(other)
         }
 
@@ -87,4 +140,19 @@ data class Weight(
             boneMass == other.boneMass &&
             visceralFat == other.visceralFat
     }
+
+    override fun hashCode(): Int {
+        var result = id.hashCode()
+        result = 31 * result + weight.hashCode()
+        result = 31 * result + timestamp.hashCode()
+        result = 31 * result + source.hashCode()
+        result = 31 * result + (bmi?.hashCode() ?: 0)
+        result = 31 * result + (totalBodyWater?.hashCode() ?: 0)
+        result = 31 * result + (muscles?.hashCode() ?: 0)
+        result = 31 * result + (leanBodyMass?.hashCode() ?: 0)
+        result = 31 * result + (bodyFat?.hashCode() ?: 0)
+        result = 31 * result + (boneMass?.hashCode() ?: 0)
+        result = 31 * result + (visceralFat?.hashCode() ?: 0)
+        return result
+    }
 }

app/src/main/java/com/dzeio/openhealth/ui/settings/SettingsFragment.kt

@@ -72,6 +72,58 @@ class SettingsFragment : PreferenceFragmentCompat() {
             }
         }
 
+        val height = findPreference<EditTextPreference>("tmp_height")
+        height?.apply {
+            setOnBindEditTextListener {
+                it.setSelectAllOnFocus(true)
+                it.inputType = InputType.TYPE_CLASS_NUMBER or InputType.TYPE_NUMBER_FLAG_DECIMAL
+            }
+
+            val value = config.getInt(Settings.USER_HEIGHT)
+
+            setOnPreferenceClickListener {
+                text = value.value?.toString()
+                return@setOnPreferenceClickListener true
+            }
+
+            setOnPreferenceChangeListener { _, newValue ->
+
+                value.value = (newValue as String).toInt()
+
+                return@setOnPreferenceChangeListener false
+            }
+        }
+
+        val activityPreference = findPreference<ListPreference>("tmp.com.dzeio.open-health.activitylevel")
+        activityPreference?.apply {
+            val value = config.getInt(Settings.USER_ACTIVITY_LEVEL)
+            setOnPreferenceClickListener {
+                if (value.value != null) {
+                    setValueIndex(value.value!!)
+                }
+                return@setOnPreferenceClickListener true
+            }
+            setOnPreferenceChangeListener { _, newValue ->
+                value.value = findIndexOfValue(newValue.toString())
+                return@setOnPreferenceChangeListener false
+            }
+        }
+
+        val biologicalSexPreference = findPreference<ListPreference>("tmp.com.dzeio.open-health.biological_sex")
+        biologicalSexPreference?.apply {
+            val value = config.getInt(Settings.USER_BIOLOGICAL_SEX)
+            setOnPreferenceClickListener {
+                if (value.value != null) {
+                    setValueIndex(value.value!!)
+                }
+                return@setOnPreferenceClickListener true
+            }
+            setOnPreferenceChangeListener { _, newValue ->
+                value.value = findIndexOfValue(newValue.toString())
+                return@setOnPreferenceChangeListener false
+            }
+        }
+
         val languagesPreference = findPreference<ListPreference>(Settings.APP_LANGUAGE)
         Log.d(TAG, Locale.getDefault().language)
         languagesPreference?.apply {

app/src/main/java/com/dzeio/openhealth/ui/weight/WeightDialogViewModel.kt

@@ -7,12 +7,13 @@ import com.dzeio.openhealth.Settings
 import com.dzeio.openhealth.core.BaseViewModel
 import com.dzeio.openhealth.data.weight.Weight
 import com.dzeio.openhealth.data.weight.WeightRepository
+import com.dzeio.openhealth.units.ActivityLevel
 import com.dzeio.openhealth.units.Units
 import com.dzeio.openhealth.utils.Configuration
 import dagger.hilt.android.lifecycle.HiltViewModel
-import javax.inject.Inject
 import kotlinx.coroutines.flow.collectLatest
 import kotlinx.coroutines.launch
+import javax.inject.Inject
 
 @HiltViewModel
 class WeightDialogViewModel @Inject internal constructor(
@@ -21,6 +22,10 @@ class WeightDialogViewModel @Inject internal constructor(
 ) : BaseViewModel() {
 
     private val _goalWeight = settings.getFloat(Settings.WEIGHT_GOAL)
+    private val age = settings.getInt(Settings.USER_AGE)
+    private val activityLevel = settings.getInt(Settings.USER_ACTIVITY_LEVEL)
+    private val biologicalSex = settings.getInt(Settings.USER_BIOLOGICAL_SEX)
+    private val height = settings.getInt(Settings.USER_HEIGHT)
 
     val goalWeight = _goalWeight.toLiveData()
 
@@ -45,7 +50,18 @@ class WeightDialogViewModel @Inject internal constructor(
     }
 
     suspend fun addWeight(weight: Float) {
-        weightRepository.addWeight(Weight(weight = weight / format.modifier))
+        weightRepository.addWeight(
+            Weight(weight = weight / format.modifier).apply {
+                if (height.value != null) {
+                    setItemsWithEstimation(
+                        height.value!!,
+                        age.value,
+                        biologicalSex.value,
+                        if (activityLevel.value != null) ActivityLevel.values()[activityLevel.value!!] else null
+                    )
+                }
+            }
+        )
     }
 
     fun setWeightGoal(value: Float?) {

app/src/main/java/com/dzeio/openhealth/units/ActivityLevel.kt

@@ -0,0 +1,10 @@
+package com.dzeio.openhealth.units
+
+enum class ActivityLevel(val modifier: Float) {
+    BEDRIDDEN(1f),
+    SEDENTARY(1.2f),
+    LIGHTLY_ACTIVE(1.375f),
+    MODERATELY_ACTIVE(1.55f),
+    VERY_ACTIVE(1.725f),
+    EXTREMELY_ACTIVE(1.9f)
+}

app/src/main/res/layout/fragment_list_weight.xml

@@ -104,6 +104,14 @@
                 android:layout_height="200dp"
                 android:minHeight="200dp" />
 
+            <TextView
+                android:id="@+id/goal_text"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:visibility="gone"
+                android:layout_marginTop="16dp"
+            />
+
             <Button
                 android:id="@+id/goal_button"
                 android:text="@string/add_goal"

app/src/main/res/values-fr/strings.xml

@@ -64,4 +64,17 @@
     <string name="import_complete">Import réussi, redémarrage de l\'application</string>
     <string name="export_complete">Export Réussi!</string>
     <string name="import_export">Importer/Exporter</string>
+    <string name="weight_item">Date: %1$s\nBMI: %2$.2f\nEau corporelle: %3$.2f\nMuscles: %4$.2f\nMasse maigre: %5$.2f\nMasse grasse: %6$.2f\nMasse osseuse: %7$.2f\nGraisse viscérale: %8$.2f\nMétabolisme basal: %9$d\nDépense énergétique quotidienne totale: %10$d</string>
+    <string-array name="activity_levels">
+        <item>Cloué au lit</item>
+        <item>Sédentaire</item>
+        <item>Légèrement actif</item>
+        <item>Modérément actif</item>
+        <item>Très actif</item>
+        <item>Extremement active</item>
+    </string-array>
+    <string-array name="biological_sex">
+        <item>Femme</item>
+        <item>Homme</item>
+    </string-array>
 </resources>

app/src/main/res/values/preferenceItems.xml

@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <string-array name="genders">
-        <item>Male</item>
-        <item>Female</item>
-    </string-array>
-</resources>

app/src/main/res/values/strings.xml

@@ -77,4 +77,17 @@
     <string name="import_complete">Import successful, Restarting the application</string>
     <string name="export_complete">Export successful!</string>
     <string name="import_export">Import/Export</string>
+    <string name="weight_item">Date: %1$s\nBMI: %2$.2f\nBody water: %3$.2f\nMuscles: %4$.2f\nLean body mass: %5$.2f\nBody fat: %6$.2f\nBone mass: %7$.2f\nVisceral fat: %8$.2f\nBasal metabolic rate: %9$d\nTotal daily energy expendure: %10$d\n</string>
+    <string-array name="activity_levels">
+        <item>Bedridden</item>
+        <item>Sedentary</item>
+        <item>Lightly active</item>
+        <item>Moderately active</item>
+        <item>Very active</item>
+        <item>Extremely active</item>
+    </string-array>
+    <string-array name="biological_sex">
+        <item>Female</item>
+        <item>Male</item>
+    </string-array>
 </resources>

app/src/main/res/xml/preferences.xml

@@ -4,20 +4,31 @@
     <PreferenceCategory android:title="@string/settings_global">
         <ListPreference
             android:defaultValue="Male"
-            android:entries="@array/genders"
-            android:entryValues="@array/genders"
-            android:key="global_gender"
-            android:title="Gender" />
+            android:entries="@array/biological_sex"
+            android:entryValues="@array/biological_sex"
+            android:key="tmp.com.dzeio.open-health.biological_sex"
+            android:title="Biological sex" />
 
         <ListPreference
             android:key="com.dzeio.open-health.app.language"
             android:title="@string/languages" />
+
+
+        <com.dzeio.openhealth.utils.fields.IntEditTextPreference
+            android:key="com.dzeio.open-health.age"
+            android:title="Age" />
+
+        <ListPreference
+            android:key="tmp.com.dzeio.open-health.activitylevel"
+            android:entries="@array/activity_levels"
+            android:entryValues="@array/activity_levels"
+            android:title="Activity Level" />
     </PreferenceCategory>
 
     <PreferenceCategory android:title="Weight  Settings">
 
         <EditTextPreference
-            android:key="global_height"
+            android:key="tmp_height"
             android:selectAllOnFocus="true"
             android:singleLine="true"
             android:title="Height" />