-
Notifications
You must be signed in to change notification settings - Fork 3
/
dsl.scala
125 lines (96 loc) · 4.85 KB
/
dsl.scala
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
/*
* Copyright 2023 Valdemar Grange
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package gql.client
import cats.data._
import cats.implicits._
import gql._
import gql.parser.{Value => V, QueryAst => P, AnyValue, Const}
import java.util.UUID
import java.time.LocalDate
object dsl {
def sel[A](fieldName: String, alias: String)(implicit sq: SubQuery[A]): SelectionSet[A] =
SelectionSet.lift(Selection.Field(fieldName, Some(alias), Nil, sq))
def sel[A](fieldName: String)(implicit sq: SubQuery[A]): SelectionSet[A] =
SelectionSet.lift(Selection.Field(fieldName, None, Nil, sq))
def sel[A](fieldName: String, argHd: P.Argument[Unit, AnyValue], argTl: P.Argument[Unit, AnyValue]*)(implicit
sq: SubQuery[A]
): SelectionSet[A] =
SelectionSet.lift(Selection.Field(fieldName, None, argHd :: argTl.toList, sq))
def sel[A](fieldName: String, alias: String, argHd: P.Argument[Unit, AnyValue], argTl: P.Argument[Unit, AnyValue]*)(implicit
sq: SubQuery[A]
): SelectionSet[A] =
SelectionSet.lift(Selection.Field(fieldName, Some(alias), argHd :: argTl.toList, sq))
def inlineFrag[A](on: String)(implicit q: SelectionSet[A]): SelectionSet[Option[A]] =
SelectionSet.lift(Selection.InlineFragment(on, q))
def fragment[A](name: String, on: String)(implicit q: SelectionSet[A]): SelectionSet[Option[A]] =
SelectionSet.lift(Selection.Fragment(name, on, q))
def list[A](implicit sq: SubQuery[A]): SubQuery[List[A]] = ListModifier(sq)
def opt[A](implicit sq: SubQuery[A]): SubQuery[Option[A]] = OptionModifier(sq)
def oneOf[A](hd: SelectionSet[Option[A]], tl: SelectionSet[Option[A]]*): SelectionSet[Option[A]] =
NonEmptyChain
.of(hd, tl: _*)
.nonEmptySequence
.emap { xs =>
val hd = xs.collect { case Some(x) => x }
if (hd.length > 1) Left("More than one sub-SelectionSet matched")
else Right(hd.headOption)
}
def variable[A](name: String)(implicit
tn: Typename[A],
encoder: io.circe.Encoder[A]
): Var[A, VariableName[A]] = Var[A](name, tn.stack.invert.show(identity))
def omittableVariable[A](name: String, default: V[Const, Unit])(implicit
tn: Typename[A],
encoder: io.circe.Encoder[A]
): Var[Option[A], VariableName[A]] = Var[A](name, tn.stack.invert.show(identity), Some(default))
def omittableVariable[A](name: String)(implicit
tn: Typename[A],
encoder: io.circe.Encoder[A]
): Var[Option[A], VariableName[A]] = Var[A](name, tn.stack.invert.show(identity), None)
def value[A](a: A)(implicit enc: io.circe.Encoder[A]) =
V.fromJson(enc(a))
def arg(name: String, value: V[AnyValue, Unit]): P.Argument[Unit, AnyValue] =
P.Argument(name, value)
def arg(name: String, vn: VariableName[?]): P.Argument[Unit, AnyValue] =
P.Argument(name, vn.asValue)
def arg[A](name: String, a: A)(implicit enc: io.circe.Encoder[A]): P.Argument[Unit, AnyValue] =
P.Argument(name, value(a))
def embed[A](implicit ss: SelectionSet[A]): SelectionSet[A] = ss
def typename[A](name: String): Typename[A] = Typename(InverseModifierStack(Nil, name))
final case class Typename[A](stack: InverseModifierStack[String]) {
def push[B](m: InverseModifier): Typename[B] = Typename(stack.push(m))
}
object Typename {
implicit def typenameStackForList[A](implicit ta: Typename[A]): Typename[List[A]] =
ta.push(InverseModifier.List)
implicit def typenameStackForOption[A](implicit ta: Typename[A]): Typename[Option[A]] =
ta.push(InverseModifier.Optional)
implicit lazy val typenameForString: Typename[String] = typename("String")
implicit lazy val typenameForInt: Typename[Int] = typename("Int")
implicit lazy val typenameForUUID: Typename[UUID] = typename("UUID")
implicit lazy val typenameForFloat: Typename[Float] = typename("Float")
implicit lazy val typenameForBoolean: Typename[Boolean] = typename("Boolean")
implicit lazy val typenameForLocalDate: Typename[LocalDate] = typename("LocalDate")
}
implicit class SyntaxForOptionalSelectionSet[A](q: SelectionSet[Option[A]]) {
def required: SelectionSet[A] =
q.emap(_.toRight("Required field was null"))
def requiredFragment(name: String, on: String): SelectionSet[A] =
(sel[String]("__typename"), q).tupled.emap { case (tn, oa) =>
oa.toRight(s"Expected fragment '${name}' to match the typename `${on}`, but the typename `${tn}` was found.")
}
}
}