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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| package generator.elm | ||
|
|
||
| import cats.data.ValidatedNec | ||
| import cats.implicits._ | ||
| import io.apibuilder.spec.v0.models.Union | ||
|
|
||
| case class ElmUnion(args: GenArgs) { | ||
| private val elmJson = ElmJson(args.imports) | ||
|
|
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| def generate(union: Union): ValidatedNec[String, String] = { | ||
| genDecoder(union).map { decoder => | ||
| ( | ||
| Seq(genTypeAlias(union)) ++ Seq(decoder.code) | ||
| ).mkString("\n\n") | ||
| } | ||
| } | ||
|
|
||
| private def genTypeAlias(union: Union): String = { | ||
| val unionName = Names.pascalCase(union.name) | ||
| Seq( | ||
| s"type $unionName =", | ||
| union.types.map { t => | ||
| val typeName = Names.pascalCase(t.`type`) | ||
| s"$unionName${typeName} $typeName" | ||
| }.mkString("\n| ").indent(4).stripTrailing(), | ||
| ).mkString("\n") | ||
| } | ||
|
|
||
| private def genDecoder(m: Union): ValidatedNec[String, ElmFunction] = { | ||
| m.discriminator match { | ||
| case None => "Only union types with discriminators are currently supported".invalidNec | ||
| case Some(disc) => genDecoderType(m, disc).validNec | ||
| } | ||
| } | ||
|
|
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| private def decoderByDiscriminatorName(u: Union, disc: String): String = { | ||
| elmJson.decoderName(u.name) + "By" + Names.pascalCase(disc) | ||
| } | ||
|
|
||
| private def genDecoderType(u: Union, disc: String): ElmFunction = { | ||
| args.imports.addAs("Json.Decode", "Decode") | ||
| elmJson.decoder(u.name) { | ||
| Seq( | ||
| s"Decode.field ${Names.wrapInQuotes(disc)} Decode.string", | ||
| s" |> Decode.andThen (\\disc ->", | ||
| s" case disc of", | ||
| genDecoderDiscriminator(u, disc).indent(12).stripTrailing, | ||
| s" )" | ||
| ).mkString("\n") | ||
| } | ||
| } | ||
|
|
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| private def genDecoderDiscriminator(u: Union, disc: String): String = { | ||
| val unionName = Names.pascalCase(u.name) | ||
| val all = u.types.map { t => | ||
| s""" | ||
| |${Names.wrapInQuotes(t.`type`)} -> | ||
| | ${elmJson.decoderName(t.`type`)} |> Decode.map $unionName${Names.pascalCase(t.`type`)} | ||
| |""".stripMargin.strip | ||
| } ++ Seq(s"_ ->\n Decode.fail (\"Unknown ${Names.maybeQuote(disc)}: \" ++ disc)") | ||
| all.mkString("\n\n").strip() | ||
| } | ||
|
|
||
| } | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| package lib | ||
|
|
||
| import play.api.libs.json.{JsArray, JsObject, JsDefined, JsValue, Json} | ||
|
|
||
| /** | ||
| * Version 0.4.28 of apibuilder-validation has an invalid Service spec definition which makes | ||
| * the apidoc field required. This dependency is pulled in by apibuilder-graphql. Once we can | ||
| * migrate the generator to scala3 we can pull in the latest dependencies. Until then to keep | ||
| * things working, we inject a default "apidoc" node where not specified. | ||
| */ | ||
| object ServiceApidocBug { | ||
| private val DefaultApiDoc = Json.obj( | ||
| "apidoc" -> Json.obj( | ||
| "version" -> "0.16.0" | ||
| ) | ||
| ) | ||
|
|
||
| def rewrite(js: JsValue): JsValue = { | ||
| js match { | ||
| case o: JsObject => rewriteObject(o) | ||
| case _ => js | ||
| } | ||
| } | ||
|
|
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| private def rewriteObject(js: JsObject): JsObject = { | ||
| rewriteImportedServices( | ||
| rewriteService(js) | ||
| ) | ||
| } | ||
|
|
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| private def rewriteService(js: JsObject): JsObject = { | ||
| js \ "service" match { | ||
| case JsDefined(svc: JsObject) => { | ||
| js ++ Json.obj("service" -> maybeAddApidoc(svc)) | ||
| } | ||
| case _ => js | ||
| } | ||
| } | ||
|
|
||
| private def rewriteImportedServices(js: JsObject): JsObject = { | ||
| js \ "imported_services" match { | ||
| case JsDefined(svc: JsArray) => { | ||
| js ++ Json.obj( | ||
| "imported_services" -> JsArray( | ||
| svc.value.toSeq.map { | ||
| case o: JsObject => maybeAddApidoc(o) | ||
| case o => o | ||
| } | ||
| ) | ||
| ) | ||
| } | ||
| case _ => js | ||
| } | ||
| } | ||
|
|
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| private def maybeAddApidoc(js: JsObject): JsObject = { | ||
| if (js.fields.contains("apidoc")) { | ||
| js | ||
| } else { | ||
| js ++ DefaultApiDoc | ||
| } | ||
| } | ||
| } |
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scala-generator/src/main/scala/models/FeatureMigration.scala
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