From fecc1df6684147a9c29c7cba9b973283525a007e Mon Sep 17 00:00:00 2001
From: Hubert Van De Walle <hubv@protonmail.com>
Date: Thu, 17 Dec 2020 06:34:24 +0100
Subject: [PATCH] Create days with examples without manually creating an input

---
 .../aoc/utils/input/MicronautExtensions.kt          | 13 +++++++++++++
 .../vandewalleh/aoc/utils/input/ResourceLoader.kt   |  5 +++++
 2 files changed, 18 insertions(+)

diff --git a/utils/src/main/kotlin/be/vandewalleh/aoc/utils/input/MicronautExtensions.kt b/utils/src/main/kotlin/be/vandewalleh/aoc/utils/input/MicronautExtensions.kt
index e58205b..2bbdaee 100644
--- a/utils/src/main/kotlin/be/vandewalleh/aoc/utils/input/MicronautExtensions.kt
+++ b/utils/src/main/kotlin/be/vandewalleh/aoc/utils/input/MicronautExtensions.kt
@@ -6,6 +6,7 @@ import io.micronaut.core.annotation.AnnotationMetadataDelegate
 import io.micronaut.core.annotation.AnnotationMetadataProvider
 import io.micronaut.core.annotation.AnnotationValue
 import io.micronaut.core.beans.BeanIntrospection
+import java.io.File
 import java.util.*
 
 internal inline fun <reified T> getIntrospection(): BeanIntrospection<T> =
@@ -21,3 +22,15 @@ internal inline fun <reified T : Annotation> AnnotationMetadataProvider.hasAnnot
     findAnnotation(T::class.java).isPresent
 
 inline fun <reified T> createDay() = BeanContext.run().getBean<T>()
+
+// A custom resourceLoader that returns a string should be more appropriate but ¯\_(ツ)_/¯
+fun BeanContext.registerExampleLoader(example: String) {
+    registerSingleton(TempFileResourceLoader(File.createTempFile("aoc-example", ".txt").apply {
+        writeText(example)
+    }))
+}
+
+inline fun <reified T> createDay(example: String): T = BeanContext.build()
+    .apply { registerExampleLoader(example) }
+    .start()
+    .getBean()
diff --git a/utils/src/main/kotlin/be/vandewalleh/aoc/utils/input/ResourceLoader.kt b/utils/src/main/kotlin/be/vandewalleh/aoc/utils/input/ResourceLoader.kt
index 18f0adb..9ebd69b 100644
--- a/utils/src/main/kotlin/be/vandewalleh/aoc/utils/input/ResourceLoader.kt
+++ b/utils/src/main/kotlin/be/vandewalleh/aoc/utils/input/ResourceLoader.kt
@@ -1,5 +1,6 @@
 package be.vandewalleh.aoc.utils.input
 
+import java.io.File
 import java.nio.file.Path
 import javax.inject.Singleton
 
@@ -19,3 +20,7 @@ class ResourceLoaderImpl : ResourceLoader {
         return Path.of(url.toURI())
     }
 }
+
+class TempFileResourceLoader(private val tempFile: File) : ResourceLoader {
+    override fun ofDay(day: Int) = Path.of(tempFile.path)
+}