✨ Allow for an "All Time" view in statistics page LeoColman#554

app/src/main/kotlin/br/com/colman/petals/statistics/StatisticsPage.kt

@@ -15,6 +15,7 @@ import br.com.colman.petals.statistics.card.AverageUseCard
 import br.com.colman.petals.statistics.component.MultiPeriodSelect
 import br.com.colman.petals.statistics.component.Period
 import br.com.colman.petals.statistics.component.Period.Zero
+import br.com.colman.petals.statistics.graph.AllTimeGraph
 import br.com.colman.petals.statistics.graph.UsePerDayOfWeekGraph
 import br.com.colman.petals.statistics.graph.UsePerHourGraph
 import br.com.colman.petals.use.repository.Use
@@ -32,6 +33,9 @@ fun StatisticsPage(useRepository: UseRepository) {
 
     UsePerHourGraph(usesInPeriod)
     UsePerDayOfWeekGraph(usesInPeriod)
+    if (uses.isNotEmpty()) {
+      AllTimeGraph(uses)
+    }
     usesInPeriod.forEach { (period, uses) ->
       AverageUseCard(uses, period.toDateRange())
     }

app/src/main/kotlin/br/com/colman/petals/statistics/graph/AllTimeGraph.kt

@@ -0,0 +1,29 @@
+package br.com.colman.petals.statistics.graph
+
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import br.com.colman.petals.R.string
+import br.com.colman.petals.statistics.graph.component.LineChart
+import br.com.colman.petals.statistics.graph.data.createAllTimeDistribution
+import br.com.colman.petals.statistics.graph.formatter.DaysSinceFirstUseFormatter
+import br.com.colman.petals.use.repository.Use
+import com.github.mikephil.charting.components.LimitLine
+import com.github.mikephil.charting.data.LineDataSet
+import java.time.LocalDate
+import java.time.YearMonth
+
+@Composable
+fun AllTimeGraph(uses: List<Use>) {
+  val description = stringResource(string.all_time_day_description)
+  val gramsData = createAllTimeDistribution(uses)
+  val gramsDataList = mutableListOf<LineDataSet>()
+  gramsDataList.add(gramsData)
+
+  LineChart(gramsDataList, description, 5f) {
+    axisMinimum = 1f
+    labelCount = 5
+    granularity = 1f
+    valueFormatter = DaysSinceFirstUseFormatter
+    addLimitLine(LimitLine(YearMonth.from(LocalDate.now()).monthValue.toFloat()).apply { lineWidth = 2f })
+  }
+}

app/src/main/kotlin/br/com/colman/petals/statistics/graph/component/LineChart.kt

@@ -20,6 +20,7 @@ import com.github.mikephil.charting.data.LineDataSet
 fun LineChart(
   datasets: List<LineDataSet>,
   description: String,
+  range: Float? = null,
   configureXAxis: XAxis.() -> Unit
 ) {
   val colors = MaterialTheme.colors
@@ -34,6 +35,13 @@ fun LineChart(
       chart.notifyDataSetChanged()
       chart.invalidate()
 
+      range?.let {
+        chart.setVisibleXRange(range, range)
+        chart.setVisibleXRangeMaximum(datasets[0].xMax)
+        chart.moveViewToX(datasets[0].xMax)
+        chart.notifyDataSetChanged()
+      }
+
       chart.axisRight.isEnabled = false
       chart.axisLeft.apply {
         axisMinimum = 0f

app/src/main/kotlin/br/com/colman/petals/statistics/graph/data/DistributionPerDaySinceFirstUse.kt

@@ -0,0 +1,44 @@
+package br.com.colman.petals.statistics.graph.data
+
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.graphics.Color.Companion.Green
+import androidx.compose.ui.graphics.Color.Companion.White
+import androidx.compose.ui.graphics.toArgb
+import androidx.compose.ui.res.stringResource
+import br.com.colman.petals.R
+import br.com.colman.petals.statistics.graph.formatter.GramsValueFormatter
+import br.com.colman.petals.use.repository.Use
+import br.com.colman.petals.use.repository.totalGrams
+import com.github.mikephil.charting.data.Entry
+import com.github.mikephil.charting.data.LineDataSet
+import java.time.LocalDateTime.now
+
+private fun calculateGramsDistributionPerDaySinceFirstUse(uses: List<Use>): List<Entry> {
+  val dayBeforeFirstUseDate = uses.minByOrNull { it.date }!!.localDate.toEpochDay().dec()
+  val now = now().toLocalDate().toEpochDay()
+  val dateRange = (dayBeforeFirstUseDate..now).toList()
+
+  val usesPerDay = dateRange.associateWith { uses.filter { u -> u.localDate.toEpochDay() == it } }
+
+  return usesPerDay.mapValues { it.value.totalGrams }.toSortedMap().map { (k, v) ->
+    Entry(
+      (k - dayBeforeFirstUseDate).toFloat(),
+      v.toFloat()
+    )
+  }
+}
+
+@Composable
+fun createAllTimeDistribution(uses: List<Use>): LineDataSet {
+  return LineDataSet(calculateGramsDistributionPerDaySinceFirstUse(uses), stringResource(R.string.all_time)).apply {
+    valueFormatter = GramsValueFormatter
+    lineWidth = 6f
+    setDrawCircles(true)
+    setDrawFilled(false)
+    setDrawValues(true)
+    fillColor = Green.toArgb()
+    color = Green.toArgb()
+    valueTextColor = White.toArgb()
+    valueTextSize = 14f
+  }
+}

app/src/main/kotlin/br/com/colman/petals/statistics/graph/formatter/DaysSinceFirstUseFormatter.kt

@@ -0,0 +1,30 @@
+package br.com.colman.petals.statistics.graph.formatter
+
+import br.com.colman.petals.koin
+import br.com.colman.petals.settings.SettingsRepository
+import br.com.colman.petals.use.repository.Use
+import br.com.colman.petals.use.repository.UseRepository
+import com.github.mikephil.charting.components.AxisBase
+import com.github.mikephil.charting.formatter.IAxisValueFormatter
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.runBlocking
+import java.time.LocalDate
+import java.time.format.DateTimeFormatter
+
+val DaysSinceFirstUseFormatter = object : IAxisValueFormatter {
+  val settingsRepository: SettingsRepository = koin.get<SettingsRepository>()
+  val useRepository: UseRepository = koin.get<UseRepository>()
+
+  private var dateFormat: String = runBlocking { settingsRepository.dateFormat.first() }
+  private val formatter = DateTimeFormatter.ofPattern(dateFormat)
+
+  private var uses: List<Use> = runBlocking { useRepository.all().first() }
+  private val dayBeforeFirstUseDateToEpochDay: Long = uses.minByOrNull { it.date }!!.localDate.toEpochDay().dec()
+
+  override fun getFormattedValue(value: Float, axis: AxisBase?): String {
+    val epochDay = (value + dayBeforeFirstUseDateToEpochDay).toLong()
+    val localDate = LocalDate.ofEpochDay(epochDay)
+
+    return formatter.format(localDate)
+  }
+}

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

@@ -168,6 +168,7 @@
     <string name="no_break_period">No break period</string>
     <string name="hours_12">12 hours</string>
     <string name="hours_24">24 hours</string>
+    <string name="all_time_day_description">All Time Distribution per day</string>
     <plurals name="last_x_days">
         <item quantity="one">Last %s day</item>
         <item quantity="other">Last %s days</item>