Implemented formatting changes in the CLI

gradle/jacoco/build.gradle

@@ -18,7 +18,8 @@ task jacocoRootTestReport(type: org.gradle.testing.jacoco.tasks.JacocoReport) {
                     exclude: [
                             'org/web3j/abi/datatypes/generated/**',
                             'org/web3j/tuples/generated/**',
-                            'org/web3j/ens/contracts/generated/**'
+                            'org/web3j/ens/contracts/generated/**',
+                            'org/gradle/**'
                     ])
         }))
     }

src/main/java/org/web3j/console/project/InteractiveOptions.java

@@ -27,25 +27,34 @@ class InteractiveOptions {
     static Scanner scanner = new Scanner(System.in);
 
     static String getProjectName() {
-        print("Please enter the project name (Required Field):");
+        print("Please enter the project name [HelloWorld]:");
         String projectName = getUserInput();
+        if (projectName.trim().isEmpty()) {
+            return "HelloWorld";
+        }
         while (!InputVerifier.classNameIsValid(projectName)) {
             projectName = getUserInput();
         }
         return projectName;
     }
 
     static String getPackageName() {
-        print("Please enter the package name for your project (Required Field): ");
+        print("Please enter the package name for your project [io.web3j]:");
         String packageName = getUserInput();
+        if (packageName.trim().isEmpty()) {
+            return "io.web3j";
+        }
         while (!InputVerifier.packageNameIsValid(packageName)) {
             packageName = getUserInput();
         }
         return packageName;
     }
 
     static Optional<String> getProjectDestination(final String projectName) {
-        print("Please enter the destination of your project (Current by default): ");
+        print(
+                "Please enter the destination of your project ["
+                        + System.getProperty("user.dir")
+                        + "]: ");
         final String projectDest = getUserInput();
         final String projectPath = projectDest + separator + projectName;
         if (new File(projectPath).exists()) {
@@ -79,7 +88,7 @@ static boolean userWantsTests() {
     }
 
     static String getSolidityProjectPath() {
-        System.out.println("Please enter the path to your solidity file/folder (Required Field): ");
+        System.out.println("Please enter the path to your solidity file/folder [Required Field]: ");
         return getUserInput();
     }
 

src/main/java/org/web3j/console/project/Project.java

@@ -14,8 +14,10 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.util.Arrays;
 
 import org.web3j.console.project.utills.InputVerifier;
+import org.web3j.console.project.utills.ProgressCounter;
 
 import static org.web3j.codegen.Console.exitError;
 
@@ -76,6 +78,8 @@ private boolean isWindows() {
 
         private void executeCommand(final File workingDir, final String[] command)
                 throws InterruptedException, IOException {
+            ProgressCounter progressCounter = new ProgressCounter();
+            progressCounter.processing(true, "Creating " + projectStructure.getProjectName());
             new ProcessBuilder(command)
                     .directory(workingDir)
                     .redirectOutput(ProcessBuilder.Redirect.INHERIT)
@@ -127,7 +131,7 @@ public Project build() {
                         projectStructure.getWrapperPath() + File.separator + "gradle-wrapper.jar");
                 buildGradleProject(projectStructure.getProjectRoot());
             } catch (final IOException | InterruptedException e) {
-                exitError("Looks like an error occurred: " + e.getMessage());
+                exitError("Looks like an error occurred: " + Arrays.toString(e.getStackTrace()));
             }
             return new Project(this);
         }

src/main/java/org/web3j/console/project/ProjectCreator.java

@@ -123,9 +123,9 @@ private void generateTests() throws IOException {
 
     private void onSuccess() {
         exitSuccess(
-                "Project created with name: "
+                "\n"
                         + projectStructure.getProjectName()
-                        + " at location: "
+                        + " has been created in"
                         + projectStructure.getProjectRoot());
     }
 }

src/main/java/org/web3j/console/project/ProjectCreatorCLIRunner.java

@@ -14,6 +14,7 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.util.Arrays;
 
 import picocli.CommandLine.Command;
 import picocli.CommandLine.Option;
@@ -67,7 +68,7 @@ private void createProject() {
         try {
             new ProjectCreator(outputDir, packageName, projectName).generate();
         } catch (final IOException e) {
-            exitError(e);
+            exitError("Could not generate project reason:" + Arrays.toString(e.getStackTrace()));
         }
     }
 

src/main/java/org/web3j/console/project/ProjectImporterCLIRunner.java

@@ -13,6 +13,7 @@
 package org.web3j.console.project;
 
 import java.io.File;
+import java.util.Arrays;
 
 import picocli.CommandLine.Command;
 import picocli.CommandLine.Option;
@@ -63,7 +64,7 @@ private void createProject() {
                     new ProjectImporter(outputDir, packageName, projectName, solidityImportPath);
             projectImporter.generate(generateTests);
         } catch (final Exception e) {
-            exitError(e);
+            exitError("Could not generate project reason:" + Arrays.toString(e.getStackTrace()));
         }
     }
 }

src/main/java/org/web3j/console/project/utills/InputVerifier.java

@@ -28,7 +28,9 @@ public static boolean requiredArgsAreNotEmpty(final String... args) {
 
     public static boolean classNameIsValid(final String className) {
         if (!SourceVersion.isIdentifier(className) || SourceVersion.isKeyword(className)) {
-            System.out.println(className + " is not valid name.");
+            System.out.println(
+                    className
+                            + " is not valid name. Please make sure that your project name complies with Java's class naming convention.");
             return false;
         }
         return true;
@@ -38,7 +40,9 @@ public static boolean packageNameIsValid(final String packageName) {
         String[] splitPackageName = packageName.split("[.]");
         for (final String argument : splitPackageName) {
             if (!SourceVersion.isIdentifier(argument) || SourceVersion.isKeyword(argument)) {
-                System.out.println(argument + " is not a valid package name.");
+                System.out.println(
+                        argument
+                                + " is not a valid package name. Please make sure that your project package name complies with Java's package naming convention.");
                 return false;
             }
         }

src/main/java/org/web3j/console/project/utills/ProgressCounter.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2019 Web3 Labs Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+package org.web3j.console.project.utills;
+
+import java.io.IOException;
+
+public class ProgressCounter {
+    public void processing(boolean loading, String message) {
+        Thread th =
+                new Thread(
+                        () -> {
+                            String anim = "|/―\\";
+                            try {
+                                System.out.write("\r|".getBytes());
+                                int current = 0;
+                                while (loading) {
+                                    current++;
+                                    String data =
+                                            String.format(
+                                                    "\r[ %s ] %s",
+                                                    anim.charAt(current % anim.length()), message);
+                                    System.out.write(data.getBytes());
+                                    Thread.sleep(500);
+                                }
+                                System.out.write("\n".getBytes());
+                            } catch (IOException | InterruptedException e) {
+                                e.printStackTrace();
+                            }
+                        });
+        th.start();
+    }
+}

src/test/java/org/web3j/console/project/ProjectCreatorTest.java

@@ -170,4 +170,27 @@ public void testWhenInteractiveAndFirstInputIsInvalidPackageName()
         process.waitFor();
         assertEquals(0, process.exitValue());
     }
+
+    @Test
+    public void testWhenInteractiveAndOptionsAreDefault() throws IOException, InterruptedException {
+        final String[] args = {"new"};
+        Process process =
+                executeClassAsSubProcessAndReturnProcess(
+                                ProjectCreator.class, Collections.emptyList(), Arrays.asList(args))
+                        .start();
+        BufferedWriter writer =
+                new BufferedWriter(new OutputStreamWriter(process.getOutputStream()));
+        writer.write("", 0, 0);
+        writer.newLine();
+        writer.write("", 0, 0);
+        writer.newLine();
+        writer.write(tempDirPath, 0, tempDirPath.length());
+        writer.newLine();
+        writer.write("y", 0, "y".length());
+        writer.newLine();
+        writer.close();
+        process.waitFor();
+        assertEquals(0, process.exitValue());
+        assertTrue(new File(tempDirPath + separator + "HelloWorld").exists());
+    }
 }

src/test/java/org/web3j/console/project/ProjectImporterTest.java

@@ -198,4 +198,29 @@ public void testWhenInteractiveAndFirstInputIsInvalidPackageName()
         process.waitFor();
         assertEquals(0, process.exitValue());
     }
+
+    @Test
+    public void testWhenInteractiveAndDefaultOptions() throws IOException, InterruptedException {
+        final String[] args = {"import"};
+        Process process =
+                executeClassAsSubProcessAndReturnProcess(
+                                ProjectImporter.class, Collections.emptyList(), Arrays.asList(args))
+                        .start();
+        BufferedWriter writer =
+                new BufferedWriter(new OutputStreamWriter(process.getOutputStream()));
+        writer.write("", 0, "".length());
+        writer.newLine();
+        writer.write("", 0, "".length());
+        writer.newLine();
+        writer.write(formattedPath, 0, formattedPath.length());
+        writer.newLine();
+        writer.write(tempDirPath, 0, tempDirPath.length());
+        writer.newLine();
+        writer.write("n", 0, "n".length());
+        writer.newLine();
+        writer.close();
+        process.waitFor();
+        assertEquals(0, process.exitValue());
+        assertTrue(new File(tempDirPath + separator + "HelloWorld").exists());
+    }
 }