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|
module Schema
( Schema,
viewSchema,
schemaTable,
schemaForm,
)
where
#ifdef ghcjs_HOST_OS
import Data.Text qualified as T
#endif
import Control.Applicative ((<|>))
import Data.Aeson qualified as A
import Data.Aeson.Key qualified as AK
import Data.Aeson.KeyMap qualified as AM
import Data.List
import Data.Map qualified as M
import Data.Maybe
import Data.Scientific (fromFloatDigits)
import Data.Set qualified as S
import Form qualified as F
import Miso
import Miso.String (MisoString, fromMisoString, intercalate, toMisoString)
import Route
data Schema = Schema
{ id :: MisoString,
schema :: MisoString,
properties :: M.Map MisoString Property,
required :: S.Set MisoString,
title :: MisoString,
type_ :: MisoString
}
deriving (Show, Eq)
instance A.FromJSON Schema where
parseJSON = A.withObject "Schema" $ \v ->
Schema
<$> v A..: "$id"
<*> v A..: "$schema"
<*> v A..: "properties"
<*> v A..: "required"
<*> v A..: "title"
<*> v A..: "type"
#ifdef ghcjs_HOST_OS
instance A.FromJSONKey MisoString where
parseJSON = fromMisoString @T.Text <$> parseJSON
#endif
data Property
= Type MisoString
| Reference MisoString
| Union [MisoString]
deriving (Show, Eq)
instance A.FromJSON Property where
parseJSON = A.withObject "Property" $ \v ->
(Type <$> v A..: "type")
<|> (Reference <$> v A..: "$ref")
<|> (fmap Union $ traverse (A..: "type") =<< v A..: "oneOf")
viewSchema :: Schema -> View action
viewSchema schema =
ol_ [] $
( \(k, v) ->
li_ [] $
[ text (toMisoString k),
text ":",
text
( case v of
Type v -> toMisoString v
Reference v -> "reference to " <> toMisoString v
Union vs -> Miso.String.intercalate " or " vs
),
text (if k `S.member` schema.required then "" else "?")
]
)
<$> (M.toList schema.properties)
schemaTable :: MisoString -> Schema -> [A.Object] -> View action
schemaTable collection schema values =
table_ [] [thead, tbody]
where
thead =
thead_ [] $
[ tr_ [] $
[ th_ [] [text (toMisoString k)]
| k <- M.keys schema.properties
]
]
tbody =
tbody_ [] $
[ tr_
[]
[ td_ [] $
[ case (k, getO (AK.fromText (fromMisoString k)) value) of
("$fileName", A.String fn) ->
a_
[ href_
(routeToMisoString (EditValue collection (toMisoString fn)))
]
[ text (toMisoString fn)
]
(_, v) ->
text $
case v of
A.String s -> toMisoString s
_ -> toMisoString (A.encode v)
]
| k <- M.keys schema.properties
]
| value <- values
]
schemaForm :: Schema -> F.Form A.Object A.Object
schemaForm schema =
fmap mergeJson . sequence . catMaybes $
( \((AK.fromText . fromMisoString) -> k, v) ->
case v of
Type "string" ->
Just $
if toMisoString (AK.toText k) `S.member` schema.required
then
AM.singleton k
<$> ( F.mapValues (getO k) (setO k) $
fmap (A.String . fromMisoString) . F.mapValues fromJson toJson $
F.inputText (toMisoString (AK.toString k))
)
else
AM.singleton k
<$> ( F.mapValues (getO k) (setO k)
$ fmap (maybe A.Null (A.String . fromMisoString))
. F.mapValues fromJson toJson
$ F.optional (F.inputText (toMisoString (AK.toString k)))
)
Type "number" ->
Just $
if toMisoString (AK.toText k) `S.member` schema.required
then
AM.singleton k
<$> ( F.mapValues (getO k) (setO k) $
fmap ((A.Number . fromFloatDigits)) . F.mapValues fromJson toJson $
F.inputNumber (toMisoString (AK.toString k))
)
else
AM.singleton k
<$> ( F.mapValues (getO k) (setO k)
$ fmap (maybe A.Null (A.Number . fromFloatDigits))
. F.mapValues fromJson toJson
$ F.optional (F.inputNumber (toMisoString (AK.toString k)))
)
Reference _ -> Nothing
Union typeStrings ->
let mapOutput = \case
F.IsString s -> A.String s
F.IsNumber i -> A.Number (fromIntegral i)
typeStringToType "number" = F.NumberType
typeStringToType "string" = F.StringType
in Just $
if toMisoString (AK.toText k) `S.member` schema.required
then
AM.singleton k
<$> ( F.mapValues (getO k) (setO k) $
F.mapValues fromJson toJson $
F.mapValues _getter _setter $
fmap mapOutput <$>
F.inputUnion (toMisoString (AK.toString k)) (map typeStringToType typeStrings)
)
else undefined
-- AM.singleton k
-- <$> ( F.mapValues (getO k) (setO k)
-- $ fmap (maybe A.Null (A.Number . fromFloatDigits))
-- . F.mapValues fromJson toJson
-- $ F.optional unionForm
-- )
)
<$> (M.toList schema.properties)
mergeJson :: [A.Object] -> A.Object
mergeJson = foldl' mergeObject AM.empty
mergeObject :: A.Object -> A.Object -> A.Object
mergeObject kvs kvs' = AM.union kvs kvs'
fromJson :: A.Value -> MisoString
fromJson (A.String x) = toMisoString x
fromJson _ = ""
toJson :: MisoString -> A.Value -> A.Value
toJson x _ = A.String (fromMisoString x)
getO :: AK.Key -> A.Object -> A.Value
getO k kvs = fromMaybe A.Null (AM.lookup k kvs)
setO :: AK.Key -> A.Value -> A.Object -> A.Object
setO k v kvs = AM.insert k v kvs
|
