156 lines
3.2 KiB
Elm
156 lines
3.2 KiB
Elm
module Effect exposing (Effect(..), batch, fromCmd, map, none, perform)
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{-|
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@docs Effect, batch, fromCmd, map, none, perform
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-}
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import Browser.Navigation
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import Form
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import Http
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import Json.Decode as Decode
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import Pages.Fetcher
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import Url exposing (Url)
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{-| -}
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type Effect msg
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= None
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| Cmd (Cmd msg)
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| Batch (List (Effect msg))
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| GetStargazers (Result Http.Error Int -> msg)
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| SetField { formId : String, name : String, value : String }
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| FetchRouteData
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{ data : Maybe FormData
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, toMsg : Result Http.Error Url -> msg
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}
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| Submit
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{ values : FormData
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, toMsg : Result Http.Error Url -> msg
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}
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| SubmitFetcher (Pages.Fetcher.Fetcher msg)
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{-| -}
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type alias RequestInfo =
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{ contentType : String
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, body : String
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}
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{-| -}
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none : Effect msg
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none =
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None
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{-| -}
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batch : List (Effect msg) -> Effect msg
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batch =
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Batch
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{-| -}
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fromCmd : Cmd msg -> Effect msg
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fromCmd =
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Cmd
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{-| -}
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map : (a -> b) -> Effect a -> Effect b
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map fn effect =
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case effect of
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None ->
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None
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Cmd cmd ->
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Cmd (Cmd.map fn cmd)
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Batch list ->
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Batch (List.map (map fn) list)
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GetStargazers toMsg ->
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GetStargazers (toMsg >> fn)
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FetchRouteData fetchInfo ->
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FetchRouteData
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{ data = fetchInfo.data
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, toMsg = fetchInfo.toMsg >> fn
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}
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Submit fetchInfo ->
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Submit
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{ values = fetchInfo.values
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, toMsg = fetchInfo.toMsg >> fn
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}
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SetField info ->
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SetField info
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SubmitFetcher fetcher ->
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fetcher
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|> Pages.Fetcher.map fn
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|> SubmitFetcher
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{-| -}
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perform :
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{ fetchRouteData :
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{ data : Maybe FormData
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, toMsg : Result Http.Error Url -> pageMsg
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}
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-> Cmd msg
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, submit :
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{ values : FormData
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, toMsg : Result Http.Error Url -> pageMsg
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}
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-> Cmd msg
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, runFetcher :
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Pages.Fetcher.Fetcher pageMsg
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-> Cmd msg
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, fromPageMsg : pageMsg -> msg
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, key : Browser.Navigation.Key
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, setField : { formId : String, name : String, value : String } -> Cmd msg
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}
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-> Effect pageMsg
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-> Cmd msg
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perform ({ fromPageMsg, key } as helpers) effect =
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case effect of
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None ->
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Cmd.none
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Cmd cmd ->
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Cmd.map fromPageMsg cmd
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SetField info ->
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helpers.setField info
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Batch list ->
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Cmd.batch (List.map (perform helpers) list)
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GetStargazers toMsg ->
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Http.get
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{ url =
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"https://api.github.com/repos/dillonkearns/elm-pages"
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, expect = Http.expectJson (toMsg >> fromPageMsg) (Decode.field "stargazers_count" Decode.int)
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}
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FetchRouteData fetchInfo ->
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helpers.fetchRouteData
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fetchInfo
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Submit record ->
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helpers.submit record
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SubmitFetcher record ->
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helpers.runFetcher record
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type alias FormData =
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{ fields : List ( String, String )
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, method : Form.Method
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, action : String
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, id : Maybe String
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}
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