Implement build command

Author: juho05

build.go

@@ -4,10 +4,13 @@ import (
 	"errors"
 	"fmt"
 	"os"
+	"path/filepath"
+	"regexp"
 	"strings"
 
 	"github.com/Bananenpro/cli"
 	"github.com/code-game-project/go-utils/cgfile"
+	"github.com/code-game-project/go-utils/exec"
 	"github.com/code-game-project/go-utils/modules"
 )
 
@@ -43,9 +46,81 @@ func Build() error {
 	}
 }
 
-func buildClient(gameName, packageName, output, url string) error {
+var artifactRegex = regexp.MustCompile(`^-\d+\.\d+\.\d+\.jar$`)
+
+func buildClient(gameName, packageName, output, url string) (err error) {
 	cli.BeginLoading("Building...")
-	// TODO
+
+	gameDir := filepath.Join("src", "main", "java")
+	pkgDir := filepath.Join(strings.Split(packageName, ".")...)
+	gameDir = filepath.Join(gameDir, pkgDir, toOneWord(gameName))
+
+	err = replaceInFile(filepath.Join(gameDir, "Game.java"), "throw new RuntimeException(\"The CG_GAME_URL environment variable must be set.\")", "return \""+url+"\"")
+	if err != nil {
+		return err
+	}
+	defer func() {
+		err2 := replaceInFile(filepath.Join(gameDir, "Game.java"), "return \""+url+"\"", "throw new RuntimeException(\"The CG_GAME_URL environment variable must be set.\")")
+		if err == nil && err2 != nil {
+			err = err2
+		}
+	}()
+
+	err = os.RemoveAll("target")
+	if err != nil {
+		return fmt.Errorf("Failed to remove target directory: %w", err)
+	}
+	_, err = exec.Execute(true, "mvn", "-B", "clean", "package")
+	if err != nil {
+		return err
+	}
+
+	pkgParts := strings.Split(packageName, ".")
+	artifactName := pkgParts[len(pkgParts)-1]
+
+	if output != "" {
+		outputIsFile := false
+		if outStat, err := os.Stat(output); err != nil {
+			if strings.HasSuffix(output, ".jar") {
+				os.MkdirAll(filepath.Dir(output), 0o755)
+				outputIsFile = true
+			} else {
+				os.MkdirAll(output, 0o755)
+			}
+		} else {
+			outputIsFile = !outStat.IsDir()
+		}
+
+		files, err := os.ReadDir("target")
+		if err != nil {
+			return err
+		}
+		moved := false
+		for _, f := range files {
+			if f.IsDir() {
+				continue
+			}
+			if strings.HasPrefix(f.Name(), artifactName) && artifactRegex.MatchString(strings.TrimPrefix(f.Name(), artifactName)) {
+				if outputIsFile {
+					err = os.Rename(filepath.Join("target", f.Name()), output)
+					if err != nil {
+						return fmt.Errorf("Couldn't move artifact to output location: %w", err)
+					}
+				} else {
+					err = os.Rename(filepath.Join("target", f.Name()), filepath.Join(output, f.Name()))
+					if err != nil {
+						return fmt.Errorf("Couldn't move artifact to output location: %w", err)
+					}
+				}
+				moved = true
+				break
+			}
+		}
+		if !moved {
+			return errors.New("Couldn't move artifact to output location: failed to find generated artifact")
+		}
+	}
+
 	cli.FinishLoading()
 	return nil
 }

run.go

@@ -44,7 +44,7 @@ func Run() error {
 }
 
 func runClient(url, packageName string, args []string) error {
-	_, err := cgExec.Execute(true, "mvn", "-q", "-B", "compile")
+	_, err := cgExec.Execute(true, "mvn", "-q", "-B", "clean", "compile")
 	if err != nil {
 		return err
 	}

templates/new/client/pom.xml.tmpl

@@ -72,29 +72,30 @@
         <plugin>
           <artifactId>maven-project-info-reports-plugin</artifactId>
           <version>3.4.0</version>
-        </plugin>
-        <plugin>
-          <artifactId>maven-shade-plugin</artifactId>
-          <version>3.3.0</version>
-          <configuration>
-            <relocations>
-              <relocation>
-                <pattern>de.themoep</pattern>
-                <shadedPattern>io.github.apfelcreme.Pipes.libs</shadedPattern>
-              </relocation>
-            </relocations>
-           </configuration>
-           <executions>
-             <execution>
-               <phase>package</phase>
-               <goals>
-                 <goal>shade</goal>
-               </goals>
-             </execution>
-           </executions>
         </plugin>
 	  </plugins>
     </pluginManagement>
+	<plugins>
+		<plugin>
+		  <groupId>org.apache.maven.plugins</groupId>
+		  <artifactId>maven-shade-plugin</artifactId>
+		  <version>3.4.1</version>
+		  <executions>
+		    <execution>
+		  	<phase>package</phase>
+		  	<goals>
+		  	  <goal>shade</goal>
+		  	</goals>
+		  	<configuration>
+		  	  <transformers>
+		  		<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+		  		  <mainClass>de.julianh.guess.App</mainClass>
+		  		</transformer>
+		  	  </transformers>
+		  	</configuration>
+		    </execution>
+		  </executions>
+        </plugin>
+	</plugins>
   </build>
 </project>
-

update.go

@@ -77,7 +77,7 @@ func updateClient(projectName, libraryVersion string, config *cgfile.CodeGameFil
 	}
 
 	cli.BeginLoading("Updating java-client...")
-	exec.Execute(true, "mvn", "compile")
+	exec.Execute(true, "mvn", "dependency:resolve")
 	exec.Execute(true, "mvn", "dependency:sources")
 	exec.Execute(true, "mvn", "dependency:resolve", "-Dclassifier=javadoc")
 	cli.FinishLoading()