Configurable remap configs. (#674)

* First pass at configurable remap configs.

* No benefit to making it lazy: https://github.com/gradle/gradle/blob/v7.4.2/subprojects/plugins/src/main/java/org/gradle/api/plugins/BasePlugin.java#L104 ... fixes some stuff to make it work.

src/main/java/net/fabricmc/loom/api/RemapConfigurationSettings.java

@@ -0,0 +1,154 @@
+/*
+ * This file is part of fabric-loom, licensed under the MIT License (MIT).
+ *
+ * Copyright (c) 2022 FabricMC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package net.fabricmc.loom.api;
+
+import java.util.Set;
+
+import javax.inject.Inject;
+
+import com.google.common.base.Preconditions;
+import org.gradle.api.Named;
+import org.gradle.api.NamedDomainObjectProvider;
+import org.gradle.api.Project;
+import org.gradle.api.artifacts.Configuration;
+import org.gradle.api.plugins.JavaPlugin;
+import org.gradle.api.provider.Property;
+import org.gradle.api.provider.Provider;
+import org.gradle.api.tasks.Internal;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.NotNull;
+
+import net.fabricmc.loom.LoomGradleExtension;
+import net.fabricmc.loom.configuration.providers.minecraft.MinecraftJarConfiguration;
+
+/**
+ * A {@link Named} object for configuring "proxy" configurations that remap artifacts.
+ */
+public abstract class RemapConfigurationSettings implements Named {
+	private final String name;
+
+	@Inject
+	public RemapConfigurationSettings(String name) {
+		this.name = name;
+
+		getTargetConfigurationName().finalizeValueOnRead();
+		getClientTargetConfigurationName().finalizeValueOnRead();
+		getOnCompileClasspath().finalizeValueOnRead();
+		getOnRuntimeClasspath().finalizeValueOnRead();
+		getPublishingMode().convention(PublishingMode.NONE).finalizeValueOnRead();
+	}
+
+	@Override
+	public @NotNull String getName() {
+		return name;
+	}
+
+	/**
+	 * @return The target configuration name
+	 */
+	public abstract Property<String> getTargetConfigurationName();
+
+	/**
+	 * Optional, only used when split sourcesets are enabled.
+	 * When not present client only entries should go onto the target configuration.
+	 *
+	 * @return The client target configuration name
+	 */
+	public abstract Property<String> getClientTargetConfigurationName();
+
+	/**
+	 * @return True if this configuration's artifacts should be exposed for compile operations.
+	 */
+	public abstract Property<Boolean> getOnCompileClasspath();
+
+	/**
+	 * @return True if this configuration's artifacts should be exposed to runtime operations.
+	 */
+	public abstract Property<Boolean> getOnRuntimeClasspath();
+
+	/**
+	 * @return the {@link PublishingMode} for the configuration.
+	 */
+	public abstract Property<PublishingMode> getPublishingMode();
+
+	public enum PublishingMode {
+		NONE,
+		COMPILE_ONLY(JavaPlugin.API_ELEMENTS_CONFIGURATION_NAME),
+		RUNTIME_ONLY(JavaPlugin.RUNTIME_ELEMENTS_CONFIGURATION_NAME),
+		COMPILE_AND_RUNTIME(JavaPlugin.API_ELEMENTS_CONFIGURATION_NAME, JavaPlugin.RUNTIME_ELEMENTS_CONFIGURATION_NAME);
+
+		private final Set<String> outgoingConfigurations;
+
+		PublishingMode(String... outgoingConfigurations) {
+			this.outgoingConfigurations = Set.of(outgoingConfigurations);
+		}
+
+		public Set<String> outgoingConfigurations() {
+			return outgoingConfigurations;
+		}
+	}
+
+	@Inject
+	protected abstract Project getProject();
+
+	@ApiStatus.Internal
+	@Internal
+	public final String getRemappedConfigurationName() {
+		return getName() + "Mapped";
+	}
+
+	@ApiStatus.Internal
+	@Internal
+	public final NamedDomainObjectProvider<Configuration> getSourceConfiguration() {
+		return getConfigurationByName(getName());
+	}
+
+	@ApiStatus.Internal
+	@Internal
+	public final NamedDomainObjectProvider<Configuration> getRemappedConfiguration() {
+		return getConfigurationByName(getRemappedConfigurationName());
+	}
+
+	@ApiStatus.Internal
+	@Internal
+	public final NamedDomainObjectProvider<Configuration> getTargetConfiguration() {
+		return getConfigurationByName(getTargetConfigurationName().get());
+	}
+
+	@ApiStatus.Internal
+	@Internal
+	public final Provider<Configuration> getClientTargetConfiguration() {
+		return getProject().provider(() -> {
+			boolean split = LoomGradleExtension.get(getProject()).getMinecraftJarConfiguration().get() == MinecraftJarConfiguration.SPLIT;
+			Preconditions.checkArgument(split, "Cannot get client target configuration when project is not split");
+			return getConfigurationByName(getClientTargetConfigurationName().get()).get();
+		});
+	}
+
+	@Internal
+	private NamedDomainObjectProvider<Configuration> getConfigurationByName(String name) {
+		return getProject().getConfigurations().named(name);
+	}
+}