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{{>licenseInfo}}

module Api.Data exposing
{{#models}}{{#model}}    {{#-first}}( {{/-first}}{{^-first}}, {{/-first}}{{classname}}{{#discriminator}}(..){{/discriminator}}{{^discriminator}}{{#oneOf}}{{#-first}}(..){{/-first}}{{/oneOf}}{{/discriminator}}{{#isEnum}}(..), {{#lambda.camelcase}}{{classname}}{{/lambda.camelcase}}Variants{{/isEnum}}{{^isEnum}}{{#vars}}{{#isCircularReference}}, {{classname}}{{nameInCamelCase}}(..){{/isCircularReference}}{{#isEnum}}, {{classname}}{{nameInCamelCase}}(..), {{#lambda.camelcase}}{{classname}}{{nameInCamelCase}}{{/lambda.camelcase}}Variants{{/isEnum}}{{/vars}}{{/isEnum}}
{{/model}}{{/models}}{{#models}}{{#model}}    , {{#lambda.camelcase}}encode{{classname}}{{/lambda.camelcase}}
{{/model}}{{/models}}{{#models}}{{#model}}{{#isEnum}}    , stringFrom{{^paramName}}{{classname}}{{/paramName}}{{enumName}}
{{/isEnum}}{{/model}}{{/models}}{{#models}}{{#model}}    , {{#lambda.camelcase}}{{classname}}{{/lambda.camelcase}}Decoder
{{/model}}{{/models}}    )

import Api{{#includeTime}}
import Api.Time exposing (Posix){{/includeTime}}
import Dict
import Json.Decode
import Json.Encode{{#includeUuid}}
import Uuid exposing (Uuid){{/includeUuid}}


-- MODEL


{{#models}}
{{#model}}
{{#description}}
{-| {{{.}}}
-}
{{/description}}
{{#isEnum}}{{>customType}}{{/isEnum}}{{^isEnum}}{{#oneOf}}{{#-first}}{{>customTypeWithData}}{{/-first}}{{/oneOf}}{{^oneOf}}{{>record}}{{/oneOf}}{{/isEnum}}


{{/model}}
{{/models}}
-- ENCODER


{{#models}}
{{#model}}
{{#isEnum}}{{>customTypeEncoder}}{{/isEnum}}{{^isEnum}}{{#oneOf}}{{#-first}}{{>customTypeWithDataEncoder}}{{/-first}}{{/oneOf}}{{^oneOf}}{{>recordEncoder}}{{/oneOf}}{{/isEnum}}


{{/model}}
{{/models}}
-- DECODER


{{#models}}
{{#model}}
{{#isEnum}}{{>customTypeDecoder}}{{/isEnum}}{{^isEnum}}{{#oneOf}}{{#-first}}{{>customTypeWithDataDecoder}}{{/-first}}{{/oneOf}}{{^oneOf}}{{>recordDecoder}}{{/oneOf}}{{/isEnum}}


{{/model}}
{{/models}}


-- HELPER


type alias EncodedField =
    Maybe ( String, Json.Encode.Value )


encodeObject : List EncodedField -> Json.Encode.Value
encodeObject =
    Json.Encode.object << List.filterMap identity


encode : String -> (a -> Json.Encode.Value) -> a -> EncodedField
encode key encoder value =
    Just ( key, encoder value )


encodeNullable : String -> (a -> Json.Encode.Value) -> Maybe a -> EncodedField
encodeNullable key encoder value =
    Just ( key, Maybe.withDefault Json.Encode.null (Maybe.map encoder value) )


maybeEncode : String -> (a -> Json.Encode.Value) -> Maybe a -> EncodedField
maybeEncode key encoder =
    Maybe.map (Tuple.pair key << encoder)


maybeEncodeNullable : String -> (a -> Json.Encode.Value) -> Maybe a -> EncodedField
maybeEncodeNullable =
    encodeNullable


decode : String -> Json.Decode.Decoder a -> Json.Decode.Decoder (a -> b) -> Json.Decode.Decoder b
decode key decoder =
    decodeChain (Json.Decode.field key decoder)


decodeLazy : (a -> c) -> String -> Json.Decode.Decoder a -> Json.Decode.Decoder (c -> b) -> Json.Decode.Decoder b
decodeLazy f key decoder =
    decodeChainLazy f (Json.Decode.field key decoder)


decodeNullable : String -> Json.Decode.Decoder a -> Json.Decode.Decoder (Maybe a -> b) -> Json.Decode.Decoder b
decodeNullable key decoder =
    decodeChain (maybeField key decoder Nothing)


decodeNullableLazy : (Maybe a -> c) -> String -> Json.Decode.Decoder a -> Json.Decode.Decoder (c -> b) -> Json.Decode.Decoder b
decodeNullableLazy f key decoder =
    decodeChainLazy f (maybeField key decoder Nothing)


maybeDecode : String -> Json.Decode.Decoder a -> Maybe a -> Json.Decode.Decoder (Maybe a -> b) -> Json.Decode.Decoder b
maybeDecode key decoder fallback =
    -- let's be kind to null-values as well
    decodeChain (maybeField key decoder fallback)


maybeDecodeLazy : (Maybe a -> c) -> String -> Json.Decode.Decoder a -> Maybe a -> Json.Decode.Decoder (c -> b) -> Json.Decode.Decoder b
maybeDecodeLazy f key decoder fallback =
    -- let's be kind to null-values as well
    decodeChainLazy f (maybeField key decoder fallback)


maybeDecodeNullable : String -> Json.Decode.Decoder a -> Maybe a -> Json.Decode.Decoder (Maybe a -> b) -> Json.Decode.Decoder b
maybeDecodeNullable key decoder fallback =
    decodeChain (maybeField key decoder fallback)


maybeDecodeNullableLazy : (Maybe a -> c) -> String -> Json.Decode.Decoder a -> Maybe a -> Json.Decode.Decoder (c -> b) -> Json.Decode.Decoder b
maybeDecodeNullableLazy f key decoder fallback =
    decodeChainLazy f (maybeField key decoder fallback)


maybeField : String -> Json.Decode.Decoder a -> Maybe a -> Json.Decode.Decoder (Maybe a)
maybeField key decoder fallback =
    let
        fieldDecoder =
            Json.Decode.field key Json.Decode.value

        valueDecoder =
            Json.Decode.oneOf [ Json.Decode.map Just decoder, Json.Decode.null fallback ]

        decodeObject rawObject =
            case Json.Decode.decodeValue fieldDecoder rawObject of
                Ok rawValue ->
                    case Json.Decode.decodeValue valueDecoder rawValue of
                        Ok value ->
                            Json.Decode.succeed value

                        Err error ->
                            Json.Decode.fail (Json.Decode.errorToString error)

                Err _ ->
                    Json.Decode.succeed fallback
    in
    Json.Decode.value
        |> Json.Decode.andThen decodeObject


decodeChain : Json.Decode.Decoder a -> Json.Decode.Decoder (a -> b) -> Json.Decode.Decoder b
decodeChain =
    Json.Decode.map2 (|>)


decodeChainLazy : (a -> c) -> Json.Decode.Decoder a -> Json.Decode.Decoder (c -> b) -> Json.Decode.Decoder b
decodeChainLazy f =
    decodeChain << Json.Decode.map f