Refactors `SetupFregeCompilerTask` tests

1 files changed, 35 insertions, 13 deletions

diff --git a/src/main/java/ch/fhnw/thga/gradleplugins/SetupFregeCompilerTask.java b/src/main/java/ch/fhnw/thga/gradleplugins/SetupFregeCompilerTask.java
index a7f48ba..b3d08a1 100644
--- a/src/main/java/ch/fhnw/thga/gradleplugins/SetupFregeCompilerTask.java
+++ b/src/main/java/ch/fhnw/thga/gradleplugins/SetupFregeCompilerTask.java
@@ -9,13 +9,21 @@ import java.nio.channels.ReadableByteChannel;
 
 import org.gradle.api.DefaultTask;
 import org.gradle.api.GradleException;
-import org.gradle.api.file.RegularFileProperty;
+import org.gradle.api.file.DirectoryProperty;
+import org.gradle.api.file.RegularFile;
+import org.gradle.api.logging.Logger;
+import org.gradle.api.logging.Logging;
 import org.gradle.api.provider.Property;
+import org.gradle.api.provider.Provider;
 import org.gradle.api.tasks.Input;
+import org.gradle.api.tasks.Internal;
 import org.gradle.api.tasks.OutputFile;
 import org.gradle.api.tasks.TaskAction;
 
 public abstract class SetupFregeCompilerTask extends DefaultTask {
+    public static final Logger LOGGER = Logging.getLogger(SetupFregeCompilerTask.class);
+
+    private static final String FREGE_GITHUB_URL_PREFIX = "https://github.com/Frege/frege/releases/download";
 
     @Input
     public abstract Property<String> getFregeVersion();
@@ -23,21 +31,35 @@ public abstract class SetupFregeCompilerTask extends DefaultTask {
     @Input
     public abstract Property<String> getFregeRelease();
 
+    @Internal
+    public abstract DirectoryProperty getFregeCompilerOutputDirectory();
+
+    @Internal
+    public Provider<String> getFregeVersionJarName() {
+        return getFregeVersion().map(version -> "frege" + version + ".jar");
+    }
+
+    @Internal
+    public Provider<String> getDownloadUrl() {
+        return getFregeVersionJarName()
+                .map(name -> String.join("/", FREGE_GITHUB_URL_PREFIX, getFregeRelease().get(), name));
+    }
+
     @OutputFile
-    public abstract RegularFileProperty getFregeCompilerPath();
+    public Provider<RegularFile> getFregeCompilerOutputPath() {
+        return getFregeCompilerOutputDirectory().file(getFregeVersionJarName());
+    }
 
     @TaskAction
     public void downloadFregeCompiler() {
-            try {
-                ReadableByteChannel readChannel = Channels.newChannel(
-                    new URL("https://github.com/Frege/frege/releases/download/" +
-                        getFregeRelease().get() + "/frege" + getFregeVersion().get() + ".jar").openStream());
-                FileOutputStream fregeCompilerDestinationPath = new FileOutputStream(getFregeCompilerPath().get().getAsFile().getAbsolutePath());
-                FileChannel writeChannel = fregeCompilerDestinationPath.getChannel();
-                writeChannel.transferFrom(readChannel, 0, Long.MAX_VALUE);
-                System.out.println("Successfully downloaded compiler to" + getFregeCompilerPath().get());
-            } catch (IOException e) {
-                throw new GradleException(e.getMessage());
-            }
+        String fregeCompilerOutputPath = getFregeCompilerOutputPath().get().getAsFile().getAbsolutePath();
+        try (ReadableByteChannel readChannel = Channels.newChannel(new URL(getDownloadUrl().get()).openStream());
+                FileOutputStream fregeCompilerOutputStream = new FileOutputStream(fregeCompilerOutputPath);) {
+            FileChannel writeChannel = fregeCompilerOutputStream.getChannel();
+            writeChannel.transferFrom(readChannel, 0, Long.MAX_VALUE);
+            LOGGER.lifecycle(String.format("Successfully downloaded %s to: %s", getFregeVersionJarName().get(), fregeCompilerOutputPath));
+        } catch (IOException e) {
+            throw new GradleException(e.getMessage());
+        }
     }
 }