Print git info

.gitignore

@@ -180,3 +180,6 @@ local.properties
 
 # Don't know what's creating this
 .project
+
+# Generated git info file
+src/main/deploy/git-info.txt

build.gradle

@@ -134,6 +134,34 @@ spotless {
 		trimTrailingWhitespace();
 	}
 }
+
+task writeGitInfo {
+	def addGitOutput = { PrintStream output, String name, String... args ->
+		output.println("### $name (git ${String.join(' ', args)})")
+		def execOutput = new ByteArrayOutputStream()
+		def ex = exec {
+			workingDir projectDir
+			executable 'git'
+			delegate.args args
+			standardOutput = execOutput
+		}
+		output.print(execOutput)
+	}
+
+	doLast {
+		try (PrintStream output = new PrintStream('src\\main\\deploy\\git-info.txt')) {
+			addGitOutput(output, 'Latest commit', 'log', '-1', '--decorate=short', '--format=medium')
+			addGitOutput(output, 'Changed files', 'diff-index', '--name-only', 'HEAD', '--')
+			addGitOutput(output, 'Untracked files', 'ls-files', '--exclude-standard', '--others')
+			output.println('### (END)')
+		}
+	}
+}
+if (getProjectBooleanProperty('jarWriteGitInfo', true)) {
+	jar.dependsOn(writeGitInfo)
+}
+
+// Set up spotless
 tasks.named("build") { finalizedBy("spotlessApply") }
 tasks.named("deploy") { finalizedBy("spotlessApply") }
 spotlessCheck.mustRunAfter(compileJava);

src/main/java/frc/team2412/robot/Robot.java

@@ -16,6 +16,9 @@
 import frc.team2412.robot.sim.PhysicsSim;
 import frc.team2412.robot.util.MACAddress;
 import frc.team2412.robot.util.auto.AutonomousChooser;
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
 import java.util.HashMap;
 import java.util.Optional;
 
@@ -103,6 +106,17 @@ public void robotInit() {
 		DriverStation.silenceJoystickConnectionWarning(true);
 
 		PathPlannerServer.startServer(5811);
+
+		logRobotInfo();
+	}
+
+	private void logRobotInfo() {
+		try {
+			File gitInfoFile = new File(Filesystem.getDeployDirectory(), "git-info.txt");
+			System.out.println("Git info:\n" + Files.readString(gitInfoFile.toPath()));
+		} catch (IOException e) {
+			DriverStation.reportWarning("Could not open git info file", true);
+		}
 	}
 
 	public SwerveAutoBuilder getAutoBuilder(HashMap<String, Command> eventMap) {