feat(package): added showing gradle version based on the gradle.prope…

…rties file (#4432)

* feat: added showing gradle version based on the gradle.properties file

* fix: wouldn't return version

* fix: forgot to remove "version=" from returned version"

* fix: ran rustfmt

* fix: test now actually tests for something

Co-authored-by: David Knaack <davidkna@users.noreply.github.com>

* fix: the regex actually makes sense now

* fix: complete refactor of control flow

* Delete flake.nix

* changed order in which files are processed

Co-authored-by: BattleCh1cken <BattleCh1cken@Larkov.de>
Co-authored-by: David Knaack <davidkna@users.noreply.github.com>

src/modules/package.rs

@@ -102,11 +102,19 @@ fn get_setup_cfg_version(context: &Context, config: &PackageConfig) -> Option<St
 }
 
 fn get_gradle_version(context: &Context, config: &PackageConfig) -> Option<String> {
-    let file_contents = context.read_file_from_pwd("build.gradle")?;
-    let re = Regex::new(r#"(?m)^version ['"](?P<version>[^'"]+)['"]$"#).unwrap();
-    let caps = re.captures(&file_contents)?;
+    context
+        .read_file_from_pwd("gradle.properties")
+        .and_then(|contents| {
+            let re = Regex::new(r"version=(?P<version>.*)").unwrap();
+            let caps = re.captures(&contents)?;
+            format_version(&caps["version"], config.version_format)
+        }).or_else(|| {
+            let build_file_contents = context.read_file_from_pwd("build.gradle")?;
+            let re = Regex::new(r#"(?m)^version ['"](?P<version>[^'"]+)['"]$"#).unwrap(); /*dark magic*/
+            let caps = re.captures(&build_file_contents)?;
+            format_version(&caps["version"], config.version_format)
 
-    format_version(&caps["version"], config.version_format)
+        })
 }
 
 fn get_composer_version(context: &Context, config: &PackageConfig) -> Option<String> {
@@ -960,6 +968,17 @@ java {
         expect_output(&project_dir, None, None);
         project_dir.close()
     }
+    #[test]
+    fn test_extract_grade_version_from_properties() -> io::Result<()> {
+        let config_name = "gradle.properties";
+        let config_content = "
+            version=1.2.3
+            ";
+        let project_dir = create_project_dir()?;
+        fill_config(&project_dir, config_name, Some(config_content))?;
+        expect_output(&project_dir, Some("v1.2.3"), None);
+        project_dir.close()
+    }
 
     #[test]
     fn test_extract_mix_version() -> io::Result<()> {