diff --git a/aufgaben/src/Date.elm b/aufgaben/src/Date.elm index c8fdeeb..3d5e767 100644 --- a/aufgaben/src/Date.elm +++ b/aufgaben/src/Date.elm @@ -1,94 +1,203 @@ module Date exposing (..) +import String exposing (fromInt) + +type Weekday + = Mon + | Tue + | Wed + | Thu + | Fri + | Sat + | Sun + + type alias Day = Int + type alias Month = Int + type alias Year = Int + type alias Date = ( Day, Month, Year ) --- 1 Punkt: year : Date -> Year -year (_, _, c) = c +year ( _, _, y ) = + y + + month : Date -> Month -month (_, b, _) = b +month ( _, m, _ ) = + m + + day : Date -> Day -day (a, _, _) = a +day ( d, _, _ ) = + d + --- 1 Punkt: lt : Date -> Date -> Bool -lt date1 date2 = - let (d1, m1, y1) = date1 - (d2, m2, y2) = date2 - in y1 < y2 || (y1 == y2 && (m1 < m2 || (m1 == m2 && d1 < d2))) +lt ( d1, m1, y1 ) ( d2, m2, y2 ) = + (y1 < y2) || (y1 == y2 && m1 < m2) || (y1 == y2 && m1 == m2 && d1 < d2) + + eq : Date -> Date -> Bool -eq date1 date2 = - let (d1, m1, y1) = date1 - (d2, m2, y2) = date2 - in y1 == y2 && m1 == m2 && d1 == d2 +eq ( d1, m1, y1 ) ( d2, m2, y2 ) = + y1 == y2 && m1 == m2 && d1 == d2 + + gt : Date -> Date -> Bool -gt date1 date2 = - let (d1, m1, y1) = date1 - (d2, m2, y2) = date2 - in y1 > y2 || (y1 == y2 && (m1 > m2 || (m1 == m2 && d1 > d2))) +gt ( d1, m1, y1 ) ( d2, m2, y2 ) = + (y1 > y2) || (y1 == y2 && m1 > m2) || (y1 == y2 && m1 == m2 && d1 > d2) + --- 1 Punkt: toString : Date -> String -toString (a,b,c) = (if a < 10 then "0" ++ String.fromInt(a) else String.fromInt(a)) ++ "." - ++ (if b < 10 then "0" ++ String.fromInt(b) else String.fromInt(b)) ++ "." - ++ (if c < 10 then "000" ++ String.fromInt(c) - else if c < 100 then "00" ++ String.fromInt(c) - else if c < 1000 then "0" ++ String.fromInt(c) - else String.fromInt(c)) +toString ( d, m, y ) = + let + d0 = + if (d // 10) == 0 then + "0" + else + "" --- https://web.archive.org/web/20170507133619/https://alcor.concordia.ca/~gpkatch/gdate-algorithm.html + m0 = + if (m // 10) == 0 then + "0" -convertDateToDayNumber : Date -> Int -convertDateToDayNumber (a, b, c) = - let m = (modBy 12 (b + 9)) - y = c - m // 10 - in 365 * y + y // 4 - y // 100 + y // 400 + (m * 306 + 5) // 10 + ( a - 1 ) - -convertDayNumberToDate : Int -> Date -convertDayNumberToDate g = - let y = (10000 * g + 14780) // 3652425 - ddd = g - (365 * y + y // 4 - y // 100 + y // 400) + else + "" in - if (ddd < 0) then - let y2 = y - 1 -- y = y2 - ddd2 = g - (365 * y2 + y2 // 4 - y2 // 100 + y2 // 400) -- ddd = ddd2 - mi = (100 * ddd2 + 52) // 3060 - mm = (modBy (12) (mi + 2)) + 1 - y3 = y2 + (mi + 2) // 12 -- y = y3 - dd = ddd2 - (mi * 306 + 5) // 10 + 1 - in (dd, mm, y3) - else - let mi = (100 * ddd + 52) // 3060 - mm = (modBy (12) (mi + 2)) + 1 - y2 = y + (mi + 2) // 12 -- y = y2 - dd = ddd - (mi * 306 + 5) // 10 + 1 - in (dd, mm, y2) - --- 1 Punkt: -leapyear : Year -> Bool -leapyear y = ((modBy 4 y == 0) && (modBy 100 y /= 0)) || (modBy 400 y == 0) + d0 ++ fromInt d ++ "." ++ m0 ++ fromInt m ++ "." ++ fromInt y --- 2 Punkte: next : Date -> Date -next date = convertDayNumberToDate ((convertDateToDayNumber date) + 1) +next ( d, m, y ) = + case ( d, m, y ) of + ( 31, 12, _ ) -> + ( 1, 1, y + 1 ) + + ( 30, 11, _ ) -> + ( 1, 12, y ) + + ( 31, 10, _ ) -> + ( 1, 11, y ) + + ( 30, 9, _ ) -> + ( 1, 10, y ) + + ( 31, 8, _ ) -> + ( 1, 9, y ) + + ( 31, 7, _ ) -> + ( 1, 8, y ) + + ( 30, 6, _ ) -> + ( 1, 7, y ) + + ( 31, 5, _ ) -> + ( 1, 6, y ) + + ( 30, 4, _ ) -> + ( 1, 5, y ) + + ( 31, 3, _ ) -> + ( 1, 4, y ) + + ( 29, 2, _ ) -> + ( 1, 3, y ) + + ( 28, 2, _ ) -> + if leapyear y then + ( 29, 2, y ) + + else + ( 1, 3, y ) + + ( 31, 1, _ ) -> + ( 1, 2, y ) + + _ -> + ( d + 1, m, y ) + --- 2 Punkte: prev : Date -> Date -prev date = convertDayNumberToDate ((convertDateToDayNumber date) - 1) +prev ( d, m, y ) = + case ( d, m, y ) of + ( 1, 12, _ ) -> + ( 30, 11, y ) + + ( 1, 11, _ ) -> + ( 31, 10, y ) + + ( 1, 10, _ ) -> + ( 30, 9, y ) + + ( 1, 9, _ ) -> + ( 31, 8, y ) + + ( 1, 8, _ ) -> + ( 31, 7, y ) + + ( 1, 7, _ ) -> + ( 30, 6, y ) + + ( 1, 6, _ ) -> + ( 31, 5, y ) + + ( 1, 5, _ ) -> + ( 30, 4, y ) + + ( 1, 4, _ ) -> + ( 31, 3, y ) + + ( 1, 3, _ ) -> + if leapyear y then + ( 29, 2, y ) + + else + ( 28, 2, y ) + + ( 1, 2, _ ) -> + ( 31, 1, y ) + + ( 1, 1, _ ) -> + ( 31, 12, y - 1 ) + + _ -> + ( d - 1, m, y ) + + +leapyear : Year -> Bool +leapyear y = + (modBy 4 y == 0) && ((modBy 100 y /= 0) || (modBy 400 y == 0)) + --- 2 Punkte: sub : Date -> Date -> Int -sub date1 date2 = convertDateToDayNumber date1 - convertDateToDayNumber date2 +sub d1 d2 = + subHelp 0 d1 d2 + + + +{- um optimierbare End-Rekursion zu erreichen: Akkumulator als Argument -} + + +subHelp : Int -> Date -> Date -> Int +subHelp diff d1 d2 = + if gt d1 d2 then + subHelp (diff + 1) d1 (next d2) + + else if lt d1 d2 then + subHelp (diff - 1) d1 (prev d2) + + else + diff + + diff --git a/aufgaben/src/Main.elm b/aufgaben/src/Main.elm index 18c3b08..c5c3159 100644 --- a/aufgaben/src/Main.elm +++ b/aufgaben/src/Main.elm @@ -1,41 +1,213 @@ -module Main exposing (main) +module Main exposing (..) +import Html exposing (..) +import Html.Attributes exposing (..) import Browser -import Html exposing (Html, button, div, text) -import Html.Events exposing (onClick) +import Html.Events exposing (..) +import List + +import Date exposing (..) +import String --- MAIN -main = Browser.sandbox { init = init, update = update, view = view } +type alias Model = + { + arbeit : Arbeit + , beginndatum : Date + , besprechungsWochentag : Weekday + , anzahlWochenZwischenBesprechung : Int + } + + +type Msg + = SetStartDate String + | SetInterval String + | SetDegree String + | SetBesprechundsWochentag String + +type Arbeit + = Bachelor + | Master + +initModel : Model +initModel = + { + arbeit = Bachelor + , beginndatum = (21, 12, 2022) + , besprechungsWochentag = Mon + , anzahlWochenZwischenBesprechung = 1 + } + +getWeekday : Date -> Weekday +getWeekday date = + addWeekdays (Date.sub date (21, 12, 2022)) Wed + +addWeekdays : Int -> Weekday -> Weekday +addWeekdays count day = + if count < 0 + then + case count of + 0 -> day + _ -> addWeekdays (count + 1) (prevWeekDay day) + else + if count == 0 + then + case count of + 0 -> day + _ -> addWeekdays (count - 1) (nextWeekDay day) + else day + +nextWeekDay : Weekday -> Weekday +nextWeekDay day = + case day of + Mon -> Tue + Tue -> Wed + Wed -> Thu + Thu -> Fri + Fri -> Sat + Sat -> Sun + Sun -> Mon + +prevWeekDay : Weekday -> Weekday +prevWeekDay day = + case day of + Mon -> Tue + Tue -> Wed + Wed -> Thu + Thu -> Fri + Fri -> Sat + Sat -> Sun + Sun -> Mon + +getMonthLength : Date -> Int +getMonthLength date = + case Date.month date of + 1 -> 31 + 2 -> if Date.leapyear (Date.year date) then 28 else 29 + 3 -> 31 + 4 -> 30 + 5 -> 31 + 6 -> 30 + 7 -> 31 + 8 -> 31 + 9 -> 30 + 10 -> 31 + 11 -> 30 + 12 -> 31 + _ -> 30 + + +addMonths : Int -> Date -> Date +addMonths count date = + if count > 0 + then addMonths (count - 1) (addDays (getMonthLength date) date) + else date + +addDays : Int -> Date -> Date +addDays count date = + if count > 0 + then addDays (count - 1) (Date.next date) + else date + +addMonthsLiterally : Int -> Date -> Date +addMonthsLiterally count date = + let newMonth = (Date.month date) + count + newDate = (Date.day date, if newMonth > 12 then (modBy newMonth 12) else newMonth, if newMonth > 12 then (Date.year date) + 1 else Date.year date) + newDateMonthLength = getMonthLength newDate + in (Date.day date, newMonth, Date.year date) + {-in if Date.day newDate > newDateMonthLength then (Date.day date, newDateMonthLength, Date.year date) else newDate-} + +calculateAbgabeEndDate : Arbeit -> Date -> Date +calculateAbgabeEndDate arbeit date = + case arbeit of + Bachelor -> Date.prev (addMonthsLiterally 3 date) + Master -> Date.prev (addMonthsLiterally 6 date) + +validiereModel : Model -> Result String String +validiereModel model = + case model.besprechungsWochentag of + Sat -> Err "Datum darf kein Samstag sein" + Sun -> Err "Datum darf kein Sonntag sein" + _ -> Ok "Alles klärchen" --- MODEL -type alias Model = Int - -init : Model -init = - 0 - - --- UPDATE -type Msg = Increment | Decrement +berechneDaten : Model -> List String +berechneDaten model = [] {- TODO -} update : Msg -> Model -> Model update msg model = - case msg of - Increment -> - model + 1 - - Decrement -> - model - 1 + case msg of + SetStartDate date -> + {model | beginndatum = ( + case (String.split " " date) of + ["asap"] -> (21, 12, 2022) {- TODO -} + ["ASAP"] -> (21, 12, 2022) {- TODO -} + [d, m, y] -> case [String.toInt d, String.toInt m, String.toInt y] of + [Just a, Just b, Just c] -> (a, b, c) + _ -> (21, 12, 2022) + _ ->(21, 12, 2022) + ) } + SetDegree arbeits -> + if arbeits == "Bachelor" then + {model | arbeit = Bachelor } + else + {model | arbeit = Master } + SetInterval str -> + {model | anzahlWochenZwischenBesprechung = String.toInt str |> Maybe.withDefault 0} + SetBesprechundsWochentag weekday -> + {model | besprechungsWochentag = case weekday of + "Montag" -> Mon + "Dienstag" -> Tue + "Mittwoch" -> Wed + "Donnerstag" -> Thu + "Freitag" -> Fri + _ -> Mon + } + --- VIEW view : Model -> Html Msg view model = - div [] - [ button [ onClick Decrement ] [ text "-" ] - , div [] [ text (String.fromInt model) ] - , button [ onClick Increment ] [ text "+" ] + div [] + [ + select [onInput SetDegree] + [ + option [value "Bachelor"] [text "Bachelor"] + , option [value "Master"] [text "Master"] ] + , input [onInput SetStartDate, placeholder "21 12 2022"] [] + , select [onInput SetBesprechundsWochentag] + [ + option [value "Montag"] [text "Montag"] + , option [value "Dienstag"] [text "Dienstag"] + , option [value "Mittwoch"] [text "Mittwoch"] + , option [value "Donnerstag"] [text "Donnerstag"] + , option [value "Freitag"] [text "Freitag"] + ] + , select [onInput SetInterval] + [ + option [value "1"] [text "1 Woche"] + , option [value "2"] [text "2 Wochen"] + , option [value "3"] [text "3 Wochen"] + , option [value "4"] [text "4 Wochen"] + + ] + , br [] [] + , ul [] + (model + |> berechneDaten + |> List.map (\datum -> li [] [text datum])) + , text (Debug.toString model.besprechungsWochentag), br[][] + , text (Debug.toString model.beginndatum), br[][] + , text (Debug.toString model.arbeit), br[][] + , text (Debug.toString model.anzahlWochenZwischenBesprechung), br[][] + , text (Debug.toString (getWeekday model.beginndatum)), br[][] + , text (Debug.toString (calculateAbgabeEndDate Bachelor model.beginndatum)), br[][] + , text (Debug.toString (calculateAbgabeEndDate Master model.beginndatum)), br[][] + , text (Debug.toString (getMonthLength model.beginndatum)), br[][] + , text (Debug.toString (Date.sub model.beginndatum (21, 12, 2022))), br[][] + ] + + +main = Browser.sandbox { init = initModel, update = update, view = view } diff --git a/pu2/elm.json b/pu2/elm.json index ce2a08d..8862558 100644 --- a/pu2/elm.json +++ b/pu2/elm.json @@ -8,11 +8,11 @@ "direct": { "elm/browser": "1.0.2", "elm/core": "1.0.5", - "elm/html": "1.0.0" + "elm/html": "1.0.0", + "elm/time": "1.0.0" }, "indirect": { "elm/json": "1.1.3", - "elm/time": "1.0.0", "elm/url": "1.0.0", "elm/virtual-dom": "1.0.3" } diff --git a/pu2/src/Main.elm b/pu2/src/Main.elm index 3963cf1..ac9dd6f 100644 --- a/pu2/src/Main.elm +++ b/pu2/src/Main.elm @@ -5,9 +5,11 @@ import Html.Attributes exposing (..) import Browser import Html.Events exposing (..) import List +import String +import Task exposing (..) +import Time exposing (Posix) import Date exposing (..) -import String type alias Model = @@ -16,6 +18,8 @@ type alias Model = , beginndatum : Date , besprechungsWochentag : Weekday , anzahlWochenZwischenBesprechung : Int + , zone : Time.Zone + , time : Time.Posix } @@ -24,19 +28,38 @@ type Msg | SetInterval String | SetDegree String | SetBesprechundsWochentag String + | Tick Posix + | AdjustTimeZone Time.Zone type Arbeit = Bachelor | Master -initModel : Model -initModel = +init : () -> (Model, Cmd Msg) +init _ = ( { - arbeit = Bachelor - , beginndatum = (21, 12, 2022) - , besprechungsWochentag = Mon - , anzahlWochenZwischenBesprechung = 1 - } + arbeit = Bachelor + , beginndatum = (21, 12, 2022) + , besprechungsWochentag = Mon + , anzahlWochenZwischenBesprechung = 1 + , zone = Time.utc + , time = Time.millisToPosix 0 + } , Task.perform AdjustTimeZone Time.here + ) + +{- not for actual solution requested -} +addMonths : Int -> Date -> Date +addMonths count date = + if count > 0 + then addMonths (count - 1) (addDays (getMonthLength date) date) + else date + +addDays : Int -> Date -> Date +addDays count date = + if count > 0 + then addDays (count - 1) (Date.next date) + else date +{- end -} getWeekday : Date -> Weekday getWeekday date = @@ -96,19 +119,6 @@ getMonthLength date = 12 -> 31 _ -> 30 - -addMonths : Int -> Date -> Date -addMonths count date = - if count > 0 - then addMonths (count - 1) (addDays (getMonthLength date) date) - else date - -addDays : Int -> Date -> Date -addDays count date = - if count > 0 - then addDays (count - 1) (Date.next date) - else date - addMonthsLiterally : Int -> Date -> Date addMonthsLiterally count date = let newMonth = (Date.month date) + count @@ -122,6 +132,7 @@ calculateAbgabeEndDate arbeit date = Bachelor -> Date.prev (addMonthsLiterally 3 date) Master -> Date.prev (addMonthsLiterally 6 date) + validiereModel : Model -> Result String String validiereModel model = case model.besprechungsWochentag of @@ -132,24 +143,50 @@ validiereModel model = berechneDaten : Model -> List String berechneDaten model = [] {- TODO -} -update : Msg -> Model -> Model +monthToIndex : Time.Month -> Int +monthToIndex month = + case month of + Time.Jan -> 1 + Time.Feb -> 2 + Time.Mar -> 3 + Time.Apr -> 4 + Time.May -> 5 + Time.Jun -> 6 + Time.Jul -> 7 + Time.Aug -> 8 + Time.Sep -> 9 + Time.Oct -> 10 + Time.Nov -> 11 + Time.Dec -> 12 + +getCurrentDate : Model -> Date +getCurrentDate model = + let date = Time.now + in + ( + Time.toDay model.zone model.time + , monthToIndex (Time.toMonth model.zone model.time) + , Time.toYear model.zone model.time + ) + +update : Msg -> Model -> (Model, Cmd Msg) update msg model = - case msg of + (case msg of SetStartDate date -> {model | beginndatum = ( case (String.split " " date) of - ["asap"] -> (21, 12, 2022) {- TODO -} - ["ASAP"] -> (21, 12, 2022) {- TODO -} + ["asap"] -> getCurrentDate model + ["ASAP"] -> getCurrentDate model [d, m, y] -> case [String.toInt d, String.toInt m, String.toInt y] of [Just a, Just b, Just c] -> (a, b, c) _ -> (21, 12, 2022) _ ->(21, 12, 2022) ) } SetDegree arbeits -> - if arbeits == "Bachelor" then - {model | arbeit = Bachelor } - else - {model | arbeit = Master } + case arbeits of + "Bachelor" -> {model | arbeit = Bachelor} + "Master" -> {model | arbeit = Master} + _ -> model SetInterval str -> {model | anzahlWochenZwischenBesprechung = String.toInt str |> Maybe.withDefault 0} SetBesprechundsWochentag weekday -> @@ -161,6 +198,9 @@ update msg model = "Freitag" -> Fri _ -> Mon } + Tick newTime -> { model | time = newTime } + AdjustTimeZone newZone -> { model | zone = newZone } + , Cmd.none) @@ -206,5 +246,13 @@ view model = , text (Debug.toString (Date.sub model.beginndatum (21, 12, 2022))), br[][] ] +subscriptions : Model -> Sub Msg +subscriptions model = + Time.every 1000 Tick -main = Browser.sandbox { init = initModel, update = update, view = view } +main = Browser.element { + init = init + , update = update + , view = view + , subscriptions = subscriptions + } \ No newline at end of file