feat: fix bug that unable to fetch CLI version (#30)

* feat: support "-v/--version" to get version of casbin-java-cli

* fix: unable to fetch CLI version

Author: sukidayou

pom.xml

@@ -103,6 +103,45 @@
                     </execution>
                 </executions>
             </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <version>3.5.0</version>
+                <executions>
+                    <execution>
+                        <id>fetch-tags</id>
+                        <phase>initialize</phase>
+                        <goals>
+                            <goal>exec</goal>
+                        </goals>
+                        <configuration>
+                            <executable>git</executable>
+                            <arguments>
+                                <argument>fetch</argument>
+                                <argument>--tags</argument>
+                                <argument>--force</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>generate-version</id>
+                        <phase>initialize</phase>
+                        <goals>
+                            <goal>exec</goal>
+                        </goals>
+                        <configuration>
+                            <executable>bash</executable>
+                            <arguments>
+                                <argument>-c</argument>
+                                <argument>
+                                    git describe --tags --abbrev=0
+                                </argument>
+                            </arguments>
+                            <outputFile>${project.build.outputDirectory}/META-INF/lastCli.version</outputFile>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
             <plugin>
                 <groupId>pl.project13.maven</groupId>
                 <artifactId>git-commit-id-plugin</artifactId>
@@ -119,6 +158,10 @@
                     <generateGitPropertiesFile>true</generateGitPropertiesFile>
                     <generateGitPropertiesFilename>${project.build.outputDirectory}/META-INF/git.properties</generateGitPropertiesFilename>
                     <format>properties</format>
+                    <gitDescribe>
+                        <always>true</always>
+                        <tags>true</tags>
+                    </gitDescribe>
                 </configuration>
             </plugin>
         </plugins>

src/main/java/org/casbin/util/VersionUtil.java

@@ -20,15 +20,52 @@
 import javax.xml.parsers.ParserConfigurationException;
 import javax.xml.parsers.SAXParser;
 import javax.xml.parsers.SAXParserFactory;
+import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.nio.charset.StandardCharsets;
 import java.util.Properties;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 /***
  * Utility class for retrieving version-related information.
  */
 public class VersionUtil {
 
+    /***
+     * Calculates the new version based on the current version and the type of commit.
+     *
+     * @param currentVersion The current version string in the format "vX.Y.Z".
+     * @param commitType The type of commit that caused the version change (e.g., "fix", "feat", "breaking change").
+     * @return The calculated new version string in the format "vX.Y.Z".
+     */
+    public static String calculateNewVersion(String currentVersion, String commitType) {
+        String[] versionParts = currentVersion.substring(1).split("\\.");
+        int major = Integer.parseInt(versionParts[0]);
+        int minor = Integer.parseInt(versionParts[1]);
+        int patch = Integer.parseInt(versionParts[2]);
+
+        switch (commitType.toLowerCase()) {
+            case "fix":
+                patch++;
+                break;
+            case "feat":
+                minor++;
+                patch = 0;
+                break;
+            case "breaking change":
+                major++;
+                minor = 0;
+                patch = 0;
+                break;
+            default:
+                return currentVersion;
+        }
+        return "v" + major + "." + minor + "." + patch;
+    }
+
     /**
      * Retrieves Cli version information.
      *
@@ -50,12 +87,32 @@ public static String getCliVersion() throws IOException {
         String tag = properties.getProperty("git.closest.tag.name", "Unknown");
         String commitCount = properties.getProperty("git.closest.tag.commit.count", "Unknown");
 
-        if(tag.isEmpty()) {
+        String commitMessage = properties.getProperty("git.commit.message.full", "Unknown");
+        Pattern pattern = Pattern.compile("^(fix|feat|chore|docs|style|refactor|test|perf|build|ci):");
+        Matcher matcher = pattern.matcher(commitMessage);
+
+        if(tag.isEmpty() || tag.equals("Unknown")) {
             tag = properties.getProperty("git.tags", "Unknown");
+            if(tag.isEmpty() || tag.equals("Unknown")) {
+                InputStream versionInputStream = Client.class.getResourceAsStream("/META-INF/lastCli.version");
+                if (versionInputStream != null) {
+                    BufferedReader reader = new BufferedReader(new InputStreamReader(versionInputStream, StandardCharsets.UTF_8));
+                    String version =  reader.readLine();
+                    if (version != null && matcher.find()) {
+                        tag = calculateNewVersion(version, matcher.group(1));
+                    }
+                }
+            }
+        }else if(!commitCount.isEmpty() && !commitCount.equals("0") && !commitCount.equals("Unknown") && matcher.find()) {
+            tag = calculateNewVersion(tag, matcher.group(1));
+            commitCount = "0";
         }
-        if (commitCount.isEmpty()) {
+
+        if ((commitCount.isEmpty() || commitCount.equals("0") || commitCount.equals("Unknown"))
+                && (!tag.isEmpty() && !tag.equals("Unknown"))) {
             return tag;
         }
+
         return commitId;
     }