Web3j account login|logout|create is functional with my MVP

src/main/java/org/web3j/console/Runner.java

@@ -15,6 +15,7 @@
 import org.web3j.codegen.Console;
 import org.web3j.codegen.SolidityFunctionWrapperGenerator;
 import org.web3j.codegen.TruffleJsonFunctionWrapperGenerator;
+import org.web3j.console.account.AccountManager;
 import org.web3j.console.config.CliConfig;
 import org.web3j.console.project.ProjectCreator;
 import org.web3j.console.project.ProjectImporter;
@@ -85,6 +86,9 @@ public static void main(String[] args) throws Exception {
                 case "audit":
                     ContractAuditor.main(tail(args));
                     break;
+                case "account":
+                    AccountManager.main(config, tail(args));
+                    break;
                 case COMMAND_GENERATE_TESTS:
                     UnitTestCreator.main(tail(args));
                     break;

src/main/java/org/web3j/console/account/AccountManager.java

@@ -0,0 +1,111 @@
+/*
+ * Copyright 2020 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.account;
+
+import java.io.IOException;
+import java.util.Properties;
+import java.util.Scanner;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import okhttp3.*;
+import org.web3j.console.config.CliConfig;
+
+import static org.web3j.codegen.Console.exitError;
+
+public class AccountManager {
+    private static final String USAGE = "account login|logout|create";
+    private static final String CLOUD_URL = "http://localhost:8000";
+
+    public static void main(final CliConfig config, final String[] args) {
+        OkHttpClient client = new OkHttpClient();
+
+        Scanner console = new Scanner(System.in);
+        if (args[0].equals("create")) {
+            if (config.getLoginToken() != null) {
+                exitError("You are already logged in. To create a new account, please log out first.");
+            }
+
+            System.out.println("Please enter your email address: ");
+            String email = console.nextLine().trim();
+
+            RequestBody accountBody =
+                    new MultipartBody.Builder()
+                            .setType(MultipartBody.FORM)
+                            .addFormDataPart("email", email)
+                            .build();
+
+            Request newAccountRequest =
+                    new okhttp3.Request.Builder()
+                            .url(String.format("%s/api/users/create/", CLOUD_URL))
+                            .post(accountBody)
+                            .build();
+
+            try {
+                Response sendRawResponse = client.newCall(newAccountRequest).execute();
+                ResponseBody body;
+                if (sendRawResponse.code() == 200 && (body = sendRawResponse.body()) != null) {
+                    String rawResponse = body.string();
+                    JsonObject responseJsonObj = JsonParser.parseString(rawResponse).getAsJsonObject();
+                    String token = responseJsonObj.get("token").getAsString();
+                    config.setLoginToken(token);
+                    System.out.println("Account created successfully. You can now use Web3j Cloud. Please confirm your e-mail within 24 hours to continue using all features without interruption.");
+                }
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+
+
+        } else if (args[0].equals("login")) {
+            System.out.println("Please enter your email address: ");
+            String email = console.nextLine().trim();
+            System.out.println("Please enter your password: ");
+            String password = console.nextLine().trim();
+
+
+            RequestBody loginBody =
+                    new MultipartBody.Builder()
+                            .setType(MultipartBody.FORM)
+                            .addFormDataPart("username", email)
+                            .addFormDataPart("password", password)
+                            .build();
+
+            Request loginRequest =
+                    new okhttp3.Request.Builder()
+                            .url(String.format("%s/api/api-token-auth/", CLOUD_URL))
+                            .post(loginBody)
+                            .build();
+
+            try {
+                Response sendRawResponse = client.newCall(loginRequest).execute();
+                ResponseBody body;
+                if (sendRawResponse.code() == 200 && (body = sendRawResponse.body()) != null) {
+                    String rawResponse = body.string();
+                    JsonObject responseJsonObj = JsonParser.parseString(rawResponse).getAsJsonObject();
+                    String token = responseJsonObj.get("token").getAsString();
+                    config.setLoginToken(token);
+                    System.out.println("You have been successfully logged in to Web3j Cloud.");
+                }
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+
+
+        } else if (args[0].equals("logout")) {
+            config.setLoginToken(null);
+        } else {
+            exitError(USAGE);
+        }
+    }
+}

src/main/java/org/web3j/console/config/CliConfig.java

@@ -42,6 +42,7 @@ private static CliConfig initializeDefaultConfig(File configFile) throws IOExcep
                 defaultServicesUrl,
                 UUID.randomUUID().toString(),
                 Version.getVersion(),
+                null,
                 null);
     }
 
@@ -60,18 +61,6 @@ public static CliConfig getConfig(File configFile) throws IOException {
         }
     }
 
-    public String getLatestVersion() {
-        return latestVersion;
-    }
-
-    public void setLatestVersion(String latestVersion) {
-        this.latestVersion = latestVersion;
-    }
-
-    public boolean isUpdateAvailable() {
-        return !version.equals(latestVersion);
-    }
-
     public enum OS {
         DARWIN,
         FREEBSD,
@@ -109,6 +98,26 @@ public static OS determineOS() {
         }
     }
 
+    public String getLatestVersion() {
+        return latestVersion;
+    }
+
+    public void setLatestVersion(String latestVersion) {
+        this.latestVersion = latestVersion;
+    }
+
+    public boolean isUpdateAvailable() {
+        return !version.equals(latestVersion);
+    }
+
+    public String getLoginToken() {
+        return loginToken;
+    }
+
+    public void setLoginToken(final String loginToken) {
+        this.loginToken = loginToken;
+    }
+
     public void setVersion(final String version) {
         this.version = version;
     }
@@ -118,18 +127,21 @@ public void setVersion(final String version) {
     private String clientId;
     private String latestVersion;
     private String updatePrompt;
+    private String loginToken;
 
     public CliConfig(
             String version,
             String servicesUrl,
             String clientId,
             String latestVersion,
-            String updatePrompt) {
+            String updatePrompt,
+            String loginToken) {
         this.version = version;
         this.servicesUrl = servicesUrl;
         this.clientId = clientId;
         this.latestVersion = latestVersion;
         this.updatePrompt = updatePrompt;
+        this.loginToken = loginToken;
     }
 
     public String getVersion() {

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

@@ -99,7 +99,8 @@ private void testWorksWithVersion(String version) throws IOException {
                                                             config.getServicesUrl(),
                                                             config.getClientId(),
                                                             config.getLatestVersion(),
-                                                            config.getUpdatePrompt()));
+                                                            config.getUpdatePrompt(),
+                                                            null));
                             Files.write(
                                     tempWeb3jSettingsPath,
                                     jsonToWrite.getBytes(Charset.defaultCharset()));