Move remapped mods into a full local maven repo (#300)

src/main/java/net/fabricmc/loom/AbstractPlugin.java

@@ -207,9 +207,9 @@ public class AbstractPlugin implements Plugin<Project> {
 				flatDirectoryArtifactRepository.setName("UserLocalCacheFiles");
 			});
 
-			project1.getRepositories().flatDir(flatDirectoryArtifactRepository -> {
-				flatDirectoryArtifactRepository.dir(extension.getRemappedModCache());
-				flatDirectoryArtifactRepository.setName("UserLocalRemappedMods");
+			project1.getRepositories().maven(mavenArtifactRepository -> {
+				mavenArtifactRepository.setUrl(extension.getRemappedModCache());
+				mavenArtifactRepository.setName("UserLocalRemappedMods");
 			});
 
 			project1.getRepositories().maven(mavenArtifactRepository -> {

src/main/java/net/fabricmc/loom/processors/dependency/ModDependencyInfo.java

@@ -28,16 +28,19 @@ import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
+import java.nio.charset.StandardCharsets;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
 
 import com.google.gson.JsonObject;
+import org.apache.commons.io.FileUtils;
+import org.apache.commons.io.IOUtils;
 import org.gradle.api.artifacts.Configuration;
 
 import net.fabricmc.loom.util.ModProcessor;
 
 public class ModDependencyInfo {
-	public final String group;
+	private final String group;
 	public final String name;
 	public final String version;
 	public final String classifier;
@@ -61,15 +64,39 @@ public class ModDependencyInfo {
 	}
 
 	public String getRemappedNotation() {
-		return String.format("%s:%s:%s@%s%s", group, name, version, remapData.mappingsSuffix, classifier);
+		if (classifier == null || classifier.isEmpty()) {
+			return String.format("%s:%s:%s", getGroup(), name, version);
 		}
 
-	public String getRemappedFilename() {
-		return String.format("%s-%s@%s", name, version, remapData.mappingsSuffix + classifier.replace(':', '-'));
+		return String.format("%s:%s:%s:%s", getGroup(), name, version, classifier);
+	}
+
+	private String getRemappedFilename() {
+		if (classifier == null || classifier.isEmpty()) {
+			return String.format("%s-%s", name, version);
+		}
+
+		return String.format("%s-%s@%s", name, version, classifier.replace(':', '-'));
+	}
+
+	private File getRemappedDir() {
+		return new File(remapData.modStore, String.format("%s/%s/%s", getGroup().replace(".", "/"), name, version));
 	}
 
 	public File getRemappedOutput() {
-		return new File(remapData.modStore, getRemappedFilename() + ".jar");
+		return new File(getRemappedDir(), getRemappedFilename() + ".jar");
+	}
+
+	private File getRemappedPom() {
+		return new File(getRemappedOutput().getAbsolutePath().replace(".jar", ".pom"));
+	}
+
+	private String getGroup() {
+		return getMappingsPrefix(remapData.mappingsSuffix) + "." + group;
+	}
+
+	public static String getMappingsPrefix(String mappings) {
+		return mappings.replace(".", "_").replace("-", "_").replace("+", "_");
 	}
 
 	public File getInputFile() {
@@ -77,11 +104,31 @@ public class ModDependencyInfo {
 	}
 
 	public boolean requiresRemapping() {
-		return !getRemappedOutput().exists() || inputFile.lastModified() <= 0 || inputFile.lastModified() > getRemappedOutput().lastModified() || forceRemap;
+		return !getRemappedOutput().exists() || inputFile.lastModified() <= 0 || inputFile.lastModified() > getRemappedOutput().lastModified() || forceRemap || !getRemappedPom().exists();
 	}
 
 	public void finaliseRemapping() {
 		getRemappedOutput().setLastModified(inputFile.lastModified());
+		savePom();
+	}
+
+	private void savePom() {
+		try {
+			String pomTemplate;
+
+			try (InputStream input = ModDependencyInfo.class.getClassLoader().getResourceAsStream("mod_compile_template.pom")) {
+				pomTemplate = IOUtils.toString(input, StandardCharsets.UTF_8);
+			}
+
+			pomTemplate = pomTemplate
+					.replace("%GROUP%", getGroup())
+					.replace("%NAME%", name)
+					.replace("%VERSION%", version);
+
+			FileUtils.writeStringToFile(getRemappedPom(), pomTemplate, StandardCharsets.UTF_8);
+		} catch (IOException e) {
+			throw new RuntimeException("Failed to write mod pom", e);
+		}
 	}
 
 	public void forceRemap() {

src/main/java/net/fabricmc/loom/providers/MappingsProvider.java

@@ -331,4 +331,8 @@ public class MappingsProvider extends DependencyProvider {
 
 		return intermediaryTiny;
 	}
+
+	public String getMappingsKey() {
+		return mappingsName + "." + minecraftVersion.replace(' ', '_').replace('.', '_').replace('-', '_') + "." + mappingsVersion;
+	}
 }

src/main/java/net/fabricmc/loom/util/LoomDependencyManager.java

@@ -54,7 +54,7 @@ public class LoomDependencyManager {
 
 	private final List<DependencyProvider> dependencyProviderList = new ArrayList<>();
 
-	public void addProvider(DependencyProvider provider) {
+	public <T extends DependencyProvider> T addProvider(T provider) {
 		if (dependencyProviderList.contains(provider)) {
 			throw new RuntimeException("Provider is already registered");
 		}
@@ -65,6 +65,7 @@ public class LoomDependencyManager {
 
 		provider.register(this);
 		dependencyProviderList.add(provider);
+		return provider;
 	}
 
 	public <T> T getProvider(Class<T> clazz) {
@@ -132,7 +133,7 @@ public class LoomDependencyManager {
 		}
 
 		SourceRemapper sourceRemapper = new SourceRemapper(project, true);
-		String mappingsKey = mappingsProvider.mappingsName + "." + mappingsProvider.minecraftVersion.replace(' ', '_').replace('.', '_').replace('-', '_') + "." + mappingsProvider.mappingsVersion;
+		String mappingsKey = mappingsProvider.getMappingsKey();
 
 		ModCompileRemapper.remapDependencies(project, mappingsKey, extension, sourceRemapper);
 

src/main/java/net/fabricmc/loom/util/ModCompileRemapper.java

@@ -92,7 +92,7 @@ public class ModCompileRemapper {
 				project.getLogger().info(":providing " + remappedLog);
 
 				if (sources != null) {
-					scheduleSourcesRemapping(project, sourceRemapper, info.sourcesFile, info.getRemappedNotation(), info.getRemappedFilename(), modStore);
+					scheduleSourcesRemapping(project, sourceRemapper, info.sourcesFile, info.getRemappedNotation(), info.getRemappedOutput(), modStore);
 				}
 			}
 
@@ -156,10 +156,10 @@ public class ModCompileRemapper {
 		return null;
 	}
 
-	private static void scheduleSourcesRemapping(Project project, SourceRemapper sourceRemapper, File sources, String remappedLog, String remappedFilename, File modStore) {
+	private static void scheduleSourcesRemapping(Project project, SourceRemapper sourceRemapper, File sources, String remappedLog, File remappedJar, File modStore) {
 		project.getLogger().debug(":providing " + remappedLog + " sources");
 
-		File remappedSources = new File(modStore, remappedFilename + "-sources.jar");
+		File remappedSources = new File(remappedJar.getAbsolutePath().replace(".jar", "-sources.jar"));
 		boolean refreshDeps = project.getGradle().getStartParameter().isRefreshDependencies();
 
 		if (!remappedSources.exists() || sources.lastModified() <= 0 || sources.lastModified() > remappedSources.lastModified() || refreshDeps) {

src/main/java/net/fabricmc/loom/util/ModProcessor.java

@@ -196,6 +196,8 @@ public class ModProcessor {
 			if (accessWidener != null) {
 				ZipUtil.replaceEntry(info.getRemappedOutput(), info.getAccessWidener(), accessWidener);
 			}
+
+			info.finaliseRemapping();
 		}
 	}
 

src/main/resources/mod_compile_template.pom

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
+		 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+	<modelVersion>4.0.0</modelVersion>
+	<groupId>%GROUP%</groupId>
+	<artifactId>%NAME%</artifactId>
+	<version>%VERSION%</version>
+</project>