From 1cb3c3586e92bb48cc630264a571d43888943a0f Mon Sep 17 00:00:00 2001
From: dermakov <ermadmi78@gmail.com>
Date: Tue, 29 Jun 2021 11:44:00 +0300
Subject: [PATCH] Readable error "scalar not configured"

---
 README.md                                        | 11 +----------
 build.gradle.kts                                 |  3 +--
 .../ermadmi78/kobby/generator/kotlin/layout.kt   | 16 ++++++++++++++--
 3 files changed, 16 insertions(+), 14 deletions(-)

diff --git a/README.md b/README.md
index 05d323df..c4bd45a3 100644
--- a/README.md
+++ b/README.md
@@ -57,20 +57,11 @@ kobby {
     kotlin {
         scalars = mapOf(
             "Date" to typeOf("java.time", "LocalDate"),
+            "JSON" to typeMap.parameterize(typeString, typeAny.nullable())
         )
     }
 }
 
-val kotlinJvmVersion: String by project
-tasks {
-    withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {
-        kotlinOptions {
-            jvmTarget = kotlinJvmVersion
-            freeCompilerArgs = listOf("-Xjsr305=strict")
-        }
-    }
-}
-
 val jacksonVersion: String by project
 dependencies {
     compileOnly("com.fasterxml.jackson.core:jackson-annotations:$jacksonVersion")
diff --git a/build.gradle.kts b/build.gradle.kts
index 76ac59cb..a84bfe48 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,6 +1,5 @@
 import org.gradle.api.tasks.testing.logging.TestExceptionFormat.FULL
 import org.jetbrains.dokka.gradle.DokkaTask
-import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 import java.time.Duration
 import java.time.Instant
 
@@ -46,7 +45,7 @@ subprojects {
     println("${currentProject.group}:${currentProject.name}")
 
     tasks {
-        withType<KotlinCompile> {
+        compileKotlin {
             kotlinOptions {
                 jvmTarget = kotlinJvmVersion
                 freeCompilerArgs = listOf("-Xjsr305=strict")
diff --git a/kobby-generator-kotlin/src/main/kotlin/io/github/ermadmi78/kobby/generator/kotlin/layout.kt b/kobby-generator-kotlin/src/main/kotlin/io/github/ermadmi78/kobby/generator/kotlin/layout.kt
index 097def88..7e25ea08 100644
--- a/kobby-generator-kotlin/src/main/kotlin/io/github/ermadmi78/kobby/generator/kotlin/layout.kt
+++ b/kobby-generator-kotlin/src/main/kotlin/io/github/ermadmi78/kobby/generator/kotlin/layout.kt
@@ -30,6 +30,18 @@ data class KotlinLayout(
     val adapter: KotlinAdapterLayout,
     val resolver: KotlinResolverLayout
 ) {
+    private fun getScalarType(name: String): KotlinType {
+        val result = scalars[name]
+        if (result == null) {
+            val message = "Kotlin data type for scalar '$name' not found. " +
+                    "Please, configure it by means of 'kobby' extension. https://github.com/ermadmi78/kobby"
+            System.err.println(message)
+            throw IllegalStateException(message)
+        }
+
+        return result
+    }
+
     // *****************************************************************************************************************
     //                                          DTO
     // *****************************************************************************************************************
@@ -38,7 +50,7 @@ data class KotlinLayout(
         get() = when (this) {
             is KobbyListType -> LIST.parameterizedBy(nested.dtoType)
             is KobbyNodeType -> when (node.kind) {
-                SCALAR -> scalars[node.name]!!.typeName
+                SCALAR -> getScalarType(node.name).typeName
                 else -> node.dtoClass
             }
         }.let { if (nullable) it.nullable() else it }
@@ -185,7 +197,7 @@ data class KotlinLayout(
     private fun KobbyType.toEntityType(makeNullable: Boolean): TypeName = when (this) {
         is KobbyListType -> LIST.parameterizedBy(nested.toEntityType(false))
         is KobbyNodeType -> when (node.kind) {
-            SCALAR -> scalars[node.name]!!.typeName
+            SCALAR -> getScalarType(node.name).typeName
             ENUM, INPUT -> node.dtoClass
             else -> node.entityClass
         }