Allow specific promotion type (either 'latest' or 'recommended')

Also, fix webhook secret being used for username and password. Oops.

Author: Jonathing

src/main/groovy/net/minecraftforge/gradleutils/PomUtils.groovy

@@ -91,6 +91,19 @@ final class PomUtils {
         PromoteArtifact.register(this.project, publication)
     }
 
+    void promote(MavenPublication publication, String promotionType) {
+        PromoteArtifact.Type type
+        try {
+            type = PromoteArtifact.Type.valueOf(promotionType.toUpperCase())
+        } catch (IllegalArgumentException e) {
+            throw new IllegalArgumentException("Invalid promotion type: $promotionType. Known types: ${PromoteArtifact.Type.values()*.toString()}", e)
+        }
+
+        PromoteArtifact.register(this.project, publication).configure { task ->
+            task.promotionType.set type
+        }
+    }
+
     /**
      * Reduces boilerplate when setting up GitHub details in a {@link MavenPom}.
      *

src/main/groovy/net/minecraftforge/gradleutils/PromoteArtifact.groovy

@@ -28,29 +28,26 @@ import java.time.Duration
 @ApiStatus.Experimental
 abstract class PromoteArtifact extends DefaultTask {
     static TaskProvider<PromoteArtifact> register(Project project, MavenPublication publication) {
-        project.tasks.register('promoteArtifact', PromoteArtifact) { task ->
-            final webhookURL = GradleUtils.getEnvVar('PROMOTE_ARTIFACT_WEBHOOK', project.providers)
-            final username = GradleUtils.getEnvVar('PROMOTE_ARTIFACT_WEBHOOK', project.providers)
-            final password = GradleUtils.getEnvVar('PROMOTE_ARTIFACT_WEBHOOK', project.providers)
-            task.onlyIf { webhookURL.present && username.present && password.present }
-
-            task.artifactGroup.set publication.groupId
-            task.artifactName.set publication.artifactId
-            task.artifactVersion.set publication.version
-            task.webhookURL.set webhookURL
-            task.username.set username
-            task.password.set password
-        }
+        project.tasks.register('promoteArtifact', PromoteArtifact, publication)
     }
 
     @Inject
     abstract ProviderFactory getProviders()
 
-    PromoteArtifact() {
-        this.artifactGroup.convention 'net.minecraftforge'
-        this.artifactName.convention this.providers.provider { this.project.name }
-        this.artifactVersion.convention this.providers.provider { String.valueOf this.project.version }
+    PromoteArtifact(MavenPublication publication) {
         this.promotionType.convention Type.LATEST
+
+        final webhookURL0 = GradleUtils.getEnvVar('PROMOTE_ARTIFACT_WEBHOOK', this.providers)
+        final username0 = GradleUtils.getEnvVar('PROMOTE_ARTIFACT_USERNAME', this.providers)
+        final password0 = GradleUtils.getEnvVar('PROMOTE_ARTIFACT_PASSWORD', this.providers)
+        this.onlyIf { webhookURL0.present && username0.present && password0.present }
+
+        this.artifactGroup.set this.providers.provider { publication.groupId }
+        this.artifactName.set this.providers.provider { publication.artifactId }
+        this.artifactVersion.set this.providers.provider { publication.version }
+        this.webhookURL.set webhookURL0
+        this.username.set username0
+        this.password.set password0
     }
 
     @Input