1 files changed, 64 insertions, 0 deletions
diff --git a/plugin/src/main/kotlin/moe/nea/archenemy/mojang/DownloadVersionMetadata.kt b/plugin/src/main/kotlin/moe/nea/archenemy/mojang/DownloadVersionMetadata.kt
new file mode 100644
index 0000000..6c900c3
--- /dev/null
+++ b/plugin/src/main/kotlin/moe/nea/archenemy/mojang/DownloadVersionMetadata.kt
@@ -0,0 +1,64 @@
+package moe.nea.archenemy.mojang
+
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.decodeFromStream
+import moe.nea.archenemy.util.DownloadUtils
+import org.gradle.api.DefaultTask
+import org.gradle.api.file.RegularFileProperty
+import org.gradle.api.tasks.Input
+import org.gradle.api.tasks.Internal
+import org.gradle.api.tasks.OutputFile
+import org.gradle.api.tasks.TaskAction
+import java.net.URL
+import javax.inject.Inject
+
+abstract class DownloadVersionMetadata @Inject constructor(
+    @get:Input
+    val version: String,
+) : DefaultTask() {
+    @get:OutputFile
+    abstract val file: RegularFileProperty
+
+
+    init {
+        file.convention(project.layout.buildDirectory.file("version-metadata/$version")).finalizeValue()
+        dependsOn(
+            project.extensions.getByType(ArchenemySharedExtension::class.java)
+                .getDownloadMinecraftVersionManifestTask()
+        )
+    }
+
+    companion object {
+        private val json = Json { ignoreUnknownKeys = true }
+    }
+
+    @TaskAction
+    fun downloadVersion() {
+        val manifest =
+            project.extensions.getByType(ArchenemySharedExtension::class.java).getDownloadMinecraftVersionManifestTask()
+                .getManifestNow()
+        val versionManifestUrl = manifest.versions.find { it.id == version }!!.url
+        val parts = versionManifestUrl.split("/")
+        val hash = if (parts.size == 7 && parts[5].length == 40) {
+            parts[5]
+        } else {
+            error("uhhh hash not found")
+        }
+        DownloadUtils.downloadFile(
+            URL(versionManifestUrl),
+            hash,
+            file.get().asFile
+        )
+    }
+
+    @Internal
+    fun getVersionMetadata(): MojangVersionMetadata {
+        return file.get().asFile.inputStream().use(json::decodeFromStream)
+    }
+
+    @Internal
+    fun getVersionMetadataNow(): MojangVersionMetadata {
+        project.objects.fileCollection().from(file).files
+        return getVersionMetadata()
+    }
+}
+\ No newline at end of file