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init

Ed L authored on 29/10/2017 21:02:20
Showing 6 changed files
graphql-addressbook/.gitignore
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+.idea
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+target
graphql-addressbook/build.sbt
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+organization := "com.fiddlerwoaroof.experiments"
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+scalaVersion := "2.12.3"
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+version      := "0.1.0-SNAPSHOT"
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+
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+name         := "graphql-addressbook"
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+
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+libraryDependencies +=  "org.scalatest" %% "scalatest" % "3.0.3"
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+
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+libraryDependencies += "org.sangria-graphql" %% "sangria" % "1.3.1"
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+libraryDependencies += "org.sangria-graphql" %% "sangria-circe" % "1.1.0"
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+
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+libraryDependencies ++= Seq(
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+  "io.circe" %% "circe-core",
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+  "io.circe" %% "circe-generic",
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+  "io.circe" %% "circe-parser"
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+).map(_ % "0.8.0")
graphql-addressbook/project/Dependencies.scala
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+import sbt._
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+
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+object Dependencies {
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+  lazy val scalaTest = "org.scalatest" %% "scalatest" % "3.0.3"
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+}
graphql-addressbook/project/build.properties
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+sbt.version=1.0.2
graphql-addressbook/src/main/scala/com/fiddlerwoaroof/experiments/graphql_addressbook/Hello.scala
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+package com.fiddlerwoaroof.experiments.graphql_addressbook
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+
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+import sangria.macros.derive._
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+import sangria.macros._
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+import sangria.schema._
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+
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+import sangria.execution._
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+import sangria.marshalling.circe._
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+
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+import io.circe.Json
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+
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+trait Identifiable {
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+  def id: String
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+}
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+
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+case class Picture(width: Int, height: Int, url: Option[String])
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+
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+case class Product(id: String, name: String, description: String) extends Identifiable {
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+  def picture(size: Int): Picture =
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+    Picture(
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+      width = size,
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+      height = size,
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+      url = Some(s"//cdn.com/$size/$id.jpg"))
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+}
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+
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+object Hello extends Greeting with App {
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+  implicit val PictureType =
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+    deriveObjectType[Unit, Picture](
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+      ObjectTypeDescription("The product picture"),
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+      DocumentField("url", "Picture CDN URL"))
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+
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+  val IdentifiableType =
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+    InterfaceType(
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+      "Identifiable",
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+      "Entity that can be identified",
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+      fields[Unit, Identifiable](
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+        Field("id", StringType, resolve = _.value.id)))
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+
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+  val ProductType =
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+    deriveObjectType[Unit, Product](
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+      Interfaces(IdentifiableType),
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+      IncludeMethods("picture"))
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+
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+  class ProductRepo {
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+    private val Products = List(
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+      Product("1", "Cheescake", "Tasty"),
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+      Product("2", "HEalth Potion", "+50 HP"),
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+    )
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+
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+    def product(id: String): Option[Product] =
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+      Products find (_.id == id)
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+
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+    def products: List[Product] = Products
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+  }
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+
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+  val Id = Argument("id", StringType)
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+
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+  val QueryType =
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+    ObjectType("Query", fields[ProductRepo, Unit](
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+      Field("product", OptionType(ProductType),
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+        description = Some("Return product with specific `id`."),
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+        arguments = Id :: Nil,
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+        resolve = c => c.ctx.product(c arg Id)),
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+
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+      Field("products", ListType(ProductType),
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+        description = Some("Returns all products"),
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+        resolve = _.ctx.products)
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+    ))
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+
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+  val query = graphql"""
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+      query MyProduct {
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+        product(id: "2") {
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+          name
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+          description
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+
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+          picture(size: 500) {
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+            width, height, url
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+          }
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+        }
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+
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+        products {
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+          name
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+        }
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+      }"""
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+}
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+
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+trait Greeting {
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+  lazy val greeting: String = "hello"
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+}
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+
graphql-addressbook/src/test/scala/com/fiddlerwoaroof/experiments/graphql_addressbook/HelloSpec.scala
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+package com.fiddlerwoaroof.experiments.graphql_addressbook
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+
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+import org.scalatest._
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+
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+class HelloSpec extends FlatSpec with Matchers {
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+  "The Hello object" should "say hello" in {
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+    Hello.greeting shouldEqual "hello"
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+  }
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+}