76 lines
1.5 KiB
Elm
76 lines
1.5 KiB
Elm
module Session exposing (Session, changes, cred, fromViewer, navKey, viewer)
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import Api exposing (Cred)
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import Avatar exposing (Avatar)
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import Browser.Navigation as Nav
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import Json.Decode as Decode exposing (Decoder)
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import Json.Encode as Encode exposing (Value)
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import Profile exposing (Profile)
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import Time
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import Viewer exposing (Viewer)
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-- TYPES
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type Session
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= LoggedIn Nav.Key Viewer
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| Guest Nav.Key
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-- INFO
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viewer : Session -> Maybe Viewer
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viewer session =
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case session of
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LoggedIn _ val ->
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Just val
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Guest _ ->
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Nothing
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cred : Session -> Maybe Cred
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cred session =
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case session of
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LoggedIn _ val ->
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Just (Viewer.cred val)
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Guest _ ->
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Nothing
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navKey : Session -> Nav.Key
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navKey session =
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case session of
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LoggedIn key _ ->
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key
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Guest key ->
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key
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-- CHANGES
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changes : (Session -> msg) -> Nav.Key -> Sub msg
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changes toMsg key =
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Api.viewerChanges (\maybeViewer -> toMsg (fromViewer key maybeViewer)) Viewer.decoder
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fromViewer : Nav.Key -> Maybe Viewer -> Session
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fromViewer key maybeViewer =
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-- It's stored in localStorage as a JSON String;
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-- first decode the Value as a String, then
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-- decode that String as JSON.
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case maybeViewer of
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Just viewerVal ->
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LoggedIn key viewerVal
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Nothing ->
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Guest key
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