Codec for Firestore

type alias User =
    { name : String
    , age : Int
    }


codec : Codec.Codec User
codec =
    Codec.document User
        |> Codec.required "name" .name Codec.string
        |> Codec.required "age" .age Codec.int
        |> Codec.build


getDocument : Firestore.Firestore -> Cmd Msg
getDocument firestore =
    firestore
        |> Firestore.root
        |> Firestore.collection "users"
        |> Firestore.document "user0"
        |> Firestore.build
        |> ExResult.toTask
        |> Task.andThen (Firestore.get (Codec.asDecoder codec))
        |> Task.attempt GotDocument


insertDocument : Firestore.Firestore -> Cmd Msg
insertDocument firestore =
    firestore
        |> Firestore.root
        |> Firestore.collection "users"
        |> Firestore.build
        |> ExResult.toTask
        |> Task.andThen
            (Firestore.insert
                (Codec.asDecoder codec)
                (Codec.asEncoder codec { name = "thomas", age = 26 })
            )
        |> Task.attempt InsertedDocument

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