Implementation part of #3

.gitignore

@@ -31,7 +31,6 @@ build/
 .vscode/
 
 node_modules
-config
 bundle.js
 bundle.min.js
 worker.js
@@ -39,3 +38,4 @@ src/main/javascript/node/
 dist
 out
 yarn-error.log
+gen-password.txt

pom.xml

@@ -110,6 +110,43 @@
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-maven-plugin</artifactId>
       </plugin>
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>properties-maven-plugin</artifactId>
+        <version>1.0.0</version>
+        <executions>
+          <execution>
+            <phase>initialize</phase>
+            <goals>
+              <goal>read-project-properties</goal>
+            </goals>
+            <configuration>
+              <files>
+                <file>src/main/resources/application.properties</file>
+              </files>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+      <plugin>
+        <groupId>org.flywaydb</groupId>
+        <artifactId>flyway-maven-plugin</artifactId>
+        <version>5.2.4</version>
+        <!-- <executions>
+          <execution>
+            <phase>generate-sources</phase>
+            <goals>
+              <goal>migrate</goal>
+            </goals>
+          </execution>
+        </executions> -->
+        <configuration>
+          <driver>${spring.datasource.driverClassName}</driver>
+          <url>jdbc:mysql://${chatto.datasource.url}:${chatto.datasource.port}/${chatto.datasource.database-name}</url>
+          <user>${chatto.datasource.username}</user>
+          <password>${chatto.datasource.password}</password>
+        </configuration>
+      </plugin>
       <plugin>
         <groupId>com.github.eirslett</groupId>
         <artifactId>frontend-maven-plugin</artifactId>

src/main/java/db/migration/V3__add_default_admin.java

@@ -0,0 +1,61 @@
+package db.migration;
+
+import java.io.BufferedWriter;
+import java.io.FileWriter;
+import java.security.SecureRandom;
+import java.sql.PreparedStatement;
+
+import org.flywaydb.core.api.migration.BaseJavaMigration;
+import org.flywaydb.core.api.migration.Context;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.crypto.password.PasswordEncoder;
+
+public class V3__add_default_admin extends BaseJavaMigration {
+
+    private final PasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
+
+    private final SecureRandom random = new SecureRandom();
+
+    /** different dictionaries used */
+    private final String ALPHA_CAPS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+    private final String ALPHA = "abcdefghijklmnopqrstuvwxyz";
+    private final String NUMERIC = "0123456789";
+    private final String SPECIAL_CHARS = "!@#$%^&*_=+-/";
+
+    /**
+     * Method will generate random string based on the parameters
+     * 
+     * @param len the length of the random string
+     * @param dic the dictionary used to generate the password
+     * @return the random password
+     */
+    public String generatePassword(int len, String dic) {
+        String result = "";
+        for (int i = 0; i < len; i++) {
+            int index = random.nextInt(dic.length());
+            result += dic.charAt(index);
+        }
+        return result;
+    }
+
+    @Override
+    public void migrate(final Context context) throws Exception {
+        try (final PreparedStatement ps = context.getConnection()
+                .prepareStatement("insert into users (user_id, name, password) values (0,?,?)")) {
+            final String generatedPassword = generatePassword(60, ALPHA_CAPS + ALPHA + SPECIAL_CHARS);
+            final BufferedWriter bw = new BufferedWriter(new FileWriter("gen-password.txt"));
+            bw.write(generatedPassword);
+            bw.write("\nPlease delete this file");
+            bw.close();
+            ps.setString(1, "admin");
+            ps.setString(2, passwordEncoder.encode(generatedPassword));
+            ps.execute();
+        }
+
+        // try (final PreparedStatement ps = context.getConnection()
+        //         .prepareStatement("insert into users_roles (user_id, role_id) values (1,0)")) {
+        //     ps.execute();
+        // }
+    }
+
+}