feat: get habit goal progress for a given date

app/application/habits/[habitId]/index.tsx

@@ -12,6 +12,7 @@ const HabitPage: React.FC = () => {
   if (habitHistory == null) {
     return <Redirect href="/application/habits/" />
   }
+
   return (
     <SafeAreaView
       style={[

app/application/habits/history.tsx

@@ -1,43 +1,46 @@
-import { useState } from "react"
-import { Calendar } from "react-native-calendars"
+import { useMemo, useState } from "react"
+import { View } from "react-native"
+import { Agenda } from "react-native-calendars"
+import { Text } from "react-native-paper"
 import { SafeAreaView } from "react-native-safe-area-context"
 
+import { getISODate } from "@/utils/dates"
+
 const HistoryPage: React.FC = () => {
-  const [selected, setSelected] = useState("")
+  const today = useMemo(() => {
+    return new Date()
+  }, [])
+  const todayISO = getISODate(today)
+
+  const [selectedDate, setSelectedDate] = useState<Date>(today)
+  const selectedISODate = getISODate(selectedDate)
 
   return (
     <SafeAreaView
       style={[
         {
           flex: 1,
-          alignItems: "center",
-          justifyContent: "center",
+          backgroundColor: "white",
         },
       ]}
     >
-      <Calendar
-        onDayPress={(day) => {
-          setSelected(day.dateString)
+      <Agenda
+        firstDay={1}
+        showClosingKnob
+        showOnlySelectedDayItems
+        onDayPress={(date) => {
+          setSelectedDate(new Date(date.dateString))
         }}
         markedDates={{
-          "2023-03-01": { selected: true, marked: true, selectedColor: "blue" },
-          "2023-03-02": { marked: true },
-          "2023-03-03": { selected: true, marked: true, selectedColor: "blue" },
-          [selected]: {
-            selected: true,
-            disableTouchEvent: true,
-            selectedColor: "orange",
-          },
+          [todayISO]: { marked: true },
         }}
-        theme={{
-          backgroundColor: "#000000",
-          calendarBackground: "#000000",
-          textSectionTitleColor: "#b6c1cd",
-          selectedDayBackgroundColor: "#00adf5",
-          selectedDayTextColor: "#ffffff",
-          todayTextColor: "#00adf5",
-          dayTextColor: "#2d4150",
-          textDisabledColor: "#d9efff",
+        selected={selectedISODate}
+        renderList={() => {
+          return (
+            <View>
+              <Text>{selectedDate.toISOString()}</Text>
+            </View>
+          )
         }}
       />
     </SafeAreaView>

app/application/habits/index.tsx

@@ -16,6 +16,7 @@ const HabitsPage: React.FC = () => {
       style={[
         {
           flex: 1,
+          backgroundColor: "white",
           alignItems: "center",
           justifyContent:
             retrieveHabitsTracker.state === "loading" ||

domain/entities/Goal.ts

@@ -86,6 +86,24 @@ export abstract class GoalProgress implements GoalProgressBase {
   public abstract isCompleted(): boolean
 
   public abstract toJSON(): GoalProgressBase
+
+  public static isNumeric(
+    goalProgress: GoalProgress,
+  ): goalProgress is GoalNumericProgress {
+    return goalProgress.goal.isNumeric()
+  }
+  public isNumeric(): this is GoalNumericProgress {
+    return GoalProgress.isNumeric(this)
+  }
+
+  public static isBoolean(
+    goalProgress: GoalProgress,
+  ): goalProgress is GoalBooleanProgress {
+    return goalProgress.goal.isBoolean()
+  }
+  public isBoolean(): this is GoalBooleanProgress {
+    return GoalProgress.isBoolean(this)
+  }
 }
 
 interface GoalNumericOptions extends GoalBase {

domain/entities/HabitHistory.ts

@@ -1,5 +1,8 @@
+import { getISODate, getWeekNumber } from "@/utils/dates"
 import type { Habit } from "./Habit"
 import type { HabitProgress } from "./HabitProgress"
+import type { GoalProgress } from "./Goal"
+import { GoalBooleanProgress, GoalNumericProgress } from "./Goal"
 
 export interface HabitHistoryJSON {
   habit: Habit
@@ -8,11 +11,70 @@ export interface HabitHistoryJSON {
 
 export class HabitHistory implements HabitHistoryJSON {
   public habit: Habit
-  public progressHistory: HabitProgress[]
+
+  private _progressHistory: HabitProgress[] = []
 
   public constructor(options: HabitHistoryJSON) {
     const { habit, progressHistory } = options
     this.habit = habit
     this.progressHistory = progressHistory
   }
+
+  /**
+   * Progress History sorted chronologically (from old to most recent progress at the end).
+   */
+  public get progressHistory(): HabitProgress[] {
+    return this._progressHistory
+  }
+
+  public set progressHistory(progressHistory: HabitProgress[]) {
+    this._progressHistory = [...progressHistory]
+    this._progressHistory.sort((a, b) => {
+      return a.date.getTime() - b.date.getTime()
+    })
+  }
+
+  private getProgressesByDate(date: Date): HabitProgress[] {
+    return this._progressHistory.filter((progress) => {
+      if (this.habit.goal.frequency === "monthly") {
+        return (
+          date.getFullYear() === progress.date.getFullYear() &&
+          date.getMonth() === progress.date.getMonth()
+        )
+      }
+      if (this.habit.goal.frequency === "weekly") {
+        return (
+          getWeekNumber(date) === getWeekNumber(progress.date) &&
+          date.getFullYear() === progress.date.getFullYear()
+        )
+      }
+      if (this.habit.goal.frequency === "daily") {
+        return getISODate(date) === getISODate(progress.date)
+      }
+      return false
+    })
+  }
+
+  public getGoalProgressByDate(date: Date): GoalProgress {
+    const progresses = this.getProgressesByDate(date)
+    if (this.habit.goal.isBoolean()) {
+      const lastSavedProgress = progresses[progresses.length - 1]
+      return new GoalBooleanProgress({
+        goal: this.habit.goal,
+        progress: lastSavedProgress?.goalProgress?.isCompleted() ?? false,
+      })
+    }
+
+    if (this.habit.goal.isNumeric()) {
+      return new GoalNumericProgress({
+        goal: this.habit.goal,
+        progress: progresses.reduce((sum, current) => {
+          const goalProgress = current.goalProgress as GoalNumericProgress
+          return sum + goalProgress.progress
+        }, 0),
+      })
+    }
+
+    throw new Error("Invalid")
+  }
 }

domain/use-cases/RetrieveHabitsTracker.ts

@@ -39,9 +39,7 @@ export class RetrieveHabitsTrackerUseCase
           })
         return new HabitHistory({
           habit,
-          progressHistory: progressHistory.sort((a, b) => {
-            return a.date.getTime() - b.date.getTime()
-          }),
+          progressHistory,
         })
       }),
     )

presentation/presenters/Authentication.ts

@@ -8,7 +8,7 @@ import type {
 import type { AuthenticationUseCase } from "@/domain/use-cases/Authentication"
 import type { ErrorGlobal, FetchState } from "./_Presenter"
 import { Presenter } from "./_Presenter"
-import { getErrorsFieldsFromZodError } from "./utils/zod"
+import { getErrorsFieldsFromZodError } from "../../utils/zod"
 
 export interface AuthenticationPresenterState {
   user: User | null

presentation/presenters/HabitsTracker.ts

@@ -8,7 +8,7 @@ import type {
   RetrieveHabitsTrackerUseCaseOptions,
 } from "@/domain/use-cases/RetrieveHabitsTracker"
 import type { HabitCreateData } from "@/domain/entities/Habit"
-import { getErrorsFieldsFromZodError } from "./utils/zod"
+import { getErrorsFieldsFromZodError } from "../../utils/zod"
 import type { HabitCreateUseCase } from "@/domain/use-cases/HabitCreate"
 
 export interface HabitsTrackerPresenterState {

presentation/react/components/HabitsMainPage/HabitCard.tsx

@@ -1,17 +1,19 @@
 import FontAwesome6 from "@expo/vector-icons/FontAwesome6"
 import { useRouter } from "expo-router"
-import { List } from "react-native-paper"
+import { View } from "react-native"
+import { List, Text } from "react-native-paper"
 
-import type { HabitHistory as HabitHistoryType } from "@/domain/entities/HabitHistory"
-import { getColorRGBAFromHex } from "@/presentation/presenters/utils/colors"
+import type { GoalProgress } from "@/domain/entities/Goal"
+import type { Habit } from "@/domain/entities/Habit"
+import { getColorRGBAFromHex } from "@/utils/colors"
 
 export interface HabitCardProps {
-  habitHistory: HabitHistoryType
+  habit: Habit
+  goalProgress: GoalProgress
 }
 
 export const HabitCard: React.FC<HabitCardProps> = (props) => {
-  const { habitHistory } = props
-  const { habit } = habitHistory
+  const { habit, goalProgress } = props
 
   const router = useRouter()
 
@@ -63,6 +65,25 @@ export const HabitCard: React.FC<HabitCardProps> = (props) => {
           />
         )
       }}
+      right={() => {
+        if (goalProgress.isNumeric()) {
+          return (
+            <View>
+              <Text>
+                {goalProgress.progress.toLocaleString()} /{" "}
+                {goalProgress.goal.target.value.toLocaleString()}{" "}
+                {goalProgress.goal.target.unit}
+              </Text>
+            </View>
+          )
+        }
+
+        return (
+          <View>
+            <Text>{goalProgress.isCompleted() ? "true" : "false"}</Text>
+          </View>
+        )
+      }}
     />
   )
 }

presentation/react/components/HabitsMainPage/HabitsEmpty.tsx

@@ -0,0 +1,40 @@
+import { useRouter } from "expo-router"
+import { View } from "react-native"
+import { Button, Text } from "react-native-paper"
+
+export const HabitsEmpty: React.FC = () => {
+  const router = useRouter()
+
+  return (
+    <View
+      style={{
+        flex: 1,
+        alignItems: "center",
+        justifyContent: "center",
+      }}
+    >
+      <Text variant="titleLarge">{"Let's begin by adding habits! 🤩"}</Text>
+      <Button
+        mode="contained"
+        style={{
+          marginTop: 16,
+          width: 250,
+          height: 40,
+        }}
+        onPress={() => {
+          router.push("/application/habits/new")
+        }}
+      >
+        <Text
+          style={{
+            color: "white",
+            fontWeight: "bold",
+            fontSize: 16,
+          }}
+        >
+          Create your first habit! 🚀
+        </Text>
+      </Button>
+    </View>
+  )
+}

presentation/react/components/HabitsMainPage/HabitsList.tsx

@@ -0,0 +1,81 @@
+import { useState } from "react"
+import { Dimensions, ScrollView } from "react-native"
+import { List } from "react-native-paper"
+
+import type { GoalFrequency } from "@/domain/entities/Goal"
+import { GOAL_FREQUENCIES } from "@/domain/entities/Goal"
+import type { HabitsTracker } from "@/domain/entities/HabitsTracker"
+import { capitalize } from "@/utils/strings"
+import { HabitCard } from "./HabitCard"
+import { HabitsEmpty } from "./HabitsEmpty"
+
+export interface HabitsListProps {
+  habitsTracker: HabitsTracker
+  selectedDate: Date
+}
+
+export const HabitsList: React.FC<HabitsListProps> = (props) => {
+  const { habitsTracker, selectedDate } = props
+
+  const frequenciesFiltered = GOAL_FREQUENCIES.filter((frequency) => {
+    return habitsTracker.habitsHistory[frequency].length > 0
+  })
+
+  const [accordionExpanded, setAccordionExpanded] = useState<{
+    [key in GoalFrequency]: boolean
+  }>({
+    daily: true,
+    weekly: true,
+    monthly: true,
+  })
+
+  if (frequenciesFiltered.length <= 0) {
+    return <HabitsEmpty />
+  }
+
+  return (
+    <ScrollView
+      showsVerticalScrollIndicator={false}
+      style={{
+        paddingHorizontal: 20,
+        width: Dimensions.get("window").width,
+      }}
+    >
+      <List.Section>
+        {frequenciesFiltered.map((frequency) => {
+          return (
+            <List.Accordion
+              expanded={accordionExpanded[frequency]}
+              onPress={() => {
+                setAccordionExpanded((old) => {
+                  return {
+                    ...old,
+                    [frequency]: !old[frequency],
+                  }
+                })
+              }}
+              key={frequency}
+              title={capitalize(frequency)}
+              titleStyle={[
+                {
+                  fontSize: 26,
+                },
+              ]}
+            >
+              {habitsTracker.habitsHistory[frequency].map((item) => {
+                const goalProgress = item.getGoalProgressByDate(selectedDate)
+                return (
+                  <HabitCard
+                    habit={item.habit}
+                    goalProgress={goalProgress}
+                    key={item.habit.id}
+                  />
+                )
+              })}
+            </List.Accordion>
+          )
+        })}
+      </List.Section>
+    </ScrollView>
+  )
+}

presentation/react/components/HabitsMainPage/HabitsMainPage.tsx

@@ -1,13 +1,9 @@
-import { useRouter } from "expo-router"
-import { useState } from "react"
-import { Dimensions, ScrollView, View } from "react-native"
-import { Button, List, Text } from "react-native-paper"
+import { useMemo, useState } from "react"
+import { Agenda } from "react-native-calendars"
 
-import type { GoalFrequency } from "@/domain/entities/Goal"
-import { GOAL_FREQUENCIES } from "@/domain/entities/Goal"
 import type { HabitsTracker } from "@/domain/entities/HabitsTracker"
-import { capitalize } from "@/presentation/presenters/utils/strings"
-import { HabitCard } from "./HabitCard"
+import { getISODate } from "@/utils/dates"
+import { HabitsList } from "./HabitsList"
 
 export interface HabitsMainPageProps {
   habitsTracker: HabitsTracker
@@ -16,91 +12,34 @@ export interface HabitsMainPageProps {
 export const HabitsMainPage: React.FC<HabitsMainPageProps> = (props) => {
   const { habitsTracker } = props
 
-  const router = useRouter()
+  const today = useMemo(() => {
+    return new Date()
+  }, [])
+  const todayISO = getISODate(today)
 
-  const habitsByFrequency = GOAL_FREQUENCIES.filter((frequency) => {
-    return habitsTracker.habitsHistory[frequency].length > 0
-  })
-
-  const [accordionExpanded, setAccordionExpanded] = useState<{
-    [key in GoalFrequency]: boolean
-  }>({
-    daily: true,
-    weekly: true,
-    monthly: true,
-  })
-
-  if (habitsByFrequency.length <= 0) {
-    return (
-      <View
-        style={{
-          flex: 1,
-          alignItems: "center",
-          justifyContent: "center",
-        }}
-      >
-        <Text variant="titleLarge">{"Let's begin by adding habits! 🤩"}</Text>
-        <Button
-          mode="contained"
-          style={{
-            marginTop: 16,
-            width: 250,
-            height: 40,
-          }}
-          onPress={() => {
-            router.push("/application/habits/new")
-          }}
-        >
-          <Text
-            style={{
-              color: "white",
-              fontWeight: "bold",
-              fontSize: 16,
-            }}
-          >
-            Create your first habit! 🚀
-          </Text>
-        </Button>
-      </View>
-    )
-  }
+  const [selectedDate, setSelectedDate] = useState<Date>(today)
+  const selectedISODate = getISODate(selectedDate)
 
   return (
-    <ScrollView
-      showsVerticalScrollIndicator={false}
-      style={{
-        paddingHorizontal: 20,
-        width: Dimensions.get("window").width,
+    <Agenda
+      firstDay={1}
+      showClosingKnob
+      showOnlySelectedDayItems
+      onDayPress={(date) => {
+        setSelectedDate(new Date(date.dateString))
       }}
-    >
-      <List.Section>
-        {habitsByFrequency.map((frequency) => {
-          return (
-            <List.Accordion
-              expanded={accordionExpanded[frequency]}
-              onPress={() => {
-                setAccordionExpanded((old) => {
-                  return {
-                    ...old,
-                    [frequency]: !old[frequency],
-                  }
-                })
-              }}
-              key={frequency}
-              title={capitalize(frequency)}
-              titleStyle={[
-                {
-                  fontSize: 26,
-                },
-              ]}
-            >
-              {habitsTracker.habitsHistory[frequency].map((item) => {
-                return <HabitCard habitHistory={item} key={item.habit.id} />
-              })}
-            </List.Accordion>
-          )
-        })}
-      </List.Section>
-    </ScrollView>
+      markedDates={{
+        [todayISO]: { marked: true },
+      }}
+      selected={selectedISODate}
+      renderList={() => {
+        return (
+          <HabitsList
+            habitsTracker={habitsTracker}
+            selectedDate={selectedDate}
+          />
+        )
+      }}
+    />
   )
 }

presentation/react/hooks/usePresenterState.ts

@@ -2,11 +2,13 @@ import { useEffect, useState } from "react"
 
 import type { Presenter } from "@/presentation/presenters/_Presenter"
 
-export const usePresenterState = <S>(presenter: Presenter<S>): S => {
-  const [state, setState] = useState<S>(presenter.initialState)
+export const usePresenterState = <State>(
+  presenter: Presenter<State>,
+): State => {
+  const [state, setState] = useState<State>(presenter.initialState)
 
   useEffect(() => {
-    const presenterSubscription = (state: S): void => {
+    const presenterSubscription = (state: State): void => {
       setState(state)
     }
 

utils/dates.ts

@@ -0,0 +1,35 @@
+export const ONE_DAY_MILLISECONDS = 1_000 * 60 * 60 * 24
+
+/**
+ * Returns a date as a string value in ISO format (without time information).
+ *
+ * @param date
+ * @returns
+ * @example getISODate(new Date("2012-05-23")) // "2012-05-23"
+ */
+export const getISODate = (date: Date): string => {
+  return date.toISOString().slice(0, 10)
+}
+
+/**
+ * Get the week number [1-52] for a given date.
+ * @param {Date} date
+ * @returns {number}
+ * @example getWeekNumber(new Date(2020, 0, 1)) // 1
+ * @example getWeekNumber(new Date(2020, 0, 8)) // 2
+ */
+export const getWeekNumber = (date: Date): number => {
+  const dateCopy = new Date(date.getTime())
+  dateCopy.setHours(0, 0, 0, 0)
+  dateCopy.setDate(dateCopy.getDate() + 3 - ((dateCopy.getDay() + 6) % 7))
+  const week1 = new Date(dateCopy.getFullYear(), 0, 4)
+  return (
+    1 +
+    Math.round(
+      ((dateCopy.getTime() - week1.getTime()) / ONE_DAY_MILLISECONDS -
+        3 +
+        ((week1.getDay() + 6) % 7)) /
+        7,
+    )
+  )
+}