about summary refs log tree commit diff
path: root/scratch/habit-screens/client/src/State.elm
blob: c75c9932224969f12a36c7c4e4657d98473ae0e7 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
module State exposing (..)

import Date exposing (Date)
import Set exposing (Set)
import Task
import Time exposing (Weekday(..))


type alias WeekdayLabel =
    String


type alias HabitLabel =
    String


type Msg
    = DoNothing
    | SetView View
    | ReceiveDate Date
    | ToggleHabit WeekdayLabel HabitLabel
    | MaybeAdjustWeekday
    | ViewToday
    | ViewPrevious
    | ViewNext
    | ClearAll
    | ToggleMorning
    | ToggleEvening


type View
    = Habits


type HabitType
    = Morning
    | Evening
    | DayOfWeek
    | Payday
    | FirstOfTheMonth
    | FirstOfTheYear


type alias Habit =
    { label : HabitLabel
    , habitType : HabitType
    , minutesDuration : Int
    }


type alias CompletedHabits =
    Set ( WeekdayLabel, HabitLabel )


type alias Model =
    { isLoading : Bool
    , view : View
    , today : Maybe Date
    , completed : CompletedHabits
    , visibleDayOfWeek : Maybe Weekday
    , includeMorning : Bool
    , includeEvening : Bool
    }


previousDay : Weekday -> Weekday
previousDay weekday =
    case weekday of
        Mon ->
            Sun

        Tue ->
            Mon

        Wed ->
            Tue

        Thu ->
            Wed

        Fri ->
            Thu

        Sat ->
            Fri

        Sun ->
            Sat


nextDay : Weekday -> Weekday
nextDay weekday =
    case weekday of
        Mon ->
            Tue

        Tue ->
            Wed

        Wed ->
            Thu

        Thu ->
            Fri

        Fri ->
            Sat

        Sat ->
            Sun

        Sun ->
            Mon


{-| The initial state for the application.
-}
init : ( Model, Cmd Msg )
init =
    ( { isLoading = False
      , view = Habits
      , today = Nothing
      , completed = Set.empty
      , visibleDayOfWeek = Nothing
      , includeMorning = False
      , includeEvening = False
      }
    , Date.today |> Task.perform ReceiveDate
    )


{-| Now that we have state, we need a function to change the state.
-}
update : Msg -> Model -> ( Model, Cmd Msg )
update msg ({ today, visibleDayOfWeek, completed } as model) =
    case msg of
        DoNothing ->
            ( model, Cmd.none )

        SetView x ->
            ( { model
                | view = x
                , isLoading = True
              }
            , Cmd.none
            )

        ReceiveDate x ->
            ( { model
                | today = Just x
                , visibleDayOfWeek = Just (Date.weekday x)
              }
            , Cmd.none
            )

        ToggleHabit weekdayLabel habitLabel ->
            ( { model
                | completed =
                    if Set.member ( weekdayLabel, habitLabel ) completed then
                        Set.remove ( weekdayLabel, habitLabel ) completed

                    else
                        Set.insert ( weekdayLabel, habitLabel ) completed
              }
            , Cmd.none
            )

        MaybeAdjustWeekday ->
            ( model, Date.today |> Task.perform ReceiveDate )

        ViewToday ->
            ( { model | visibleDayOfWeek = today |> Maybe.map Date.weekday }, Cmd.none )

        ViewPrevious ->
            ( { model
                | visibleDayOfWeek = visibleDayOfWeek |> Maybe.map previousDay
              }
            , Cmd.none
            )

        ViewNext ->
            ( { model
                | visibleDayOfWeek = visibleDayOfWeek |> Maybe.map nextDay
              }
            , Cmd.none
            )

        ClearAll ->
            ( { model | completed = Set.empty }, Cmd.none )

        ToggleMorning ->
            ( { model | includeMorning = not model.includeMorning }, Cmd.none )

        ToggleEvening ->
            ( { model | includeEvening = not model.includeEvening }, Cmd.none )