Append link to gitlab to create link between open project and gitlab (#7)

Reviewed-on: #7
Co-authored-by: Julien Fastré <julien.fastre@champs-libres.coop>
Co-committed-by: Julien Fastré <julien.fastre@champs-libres.coop>

src/planning/utils.rs

@@ -65,10 +65,30 @@ fn add_related_issues_section(issue: &IssueRelated) -> Vec<String> {
 
 fn convert_issue_link_items(issue: &IssueRelated) -> String {
     match issue {
-        IssueRelated::OpenProjectIssue(issue_url) => format!("- [{}]({})", issue_url, issue_url),
+        IssueRelated::OpenProjectIssue(issue_url) => {
+            let m = format!("- [{}]({})", issue_url, issue_url);
+            match extract_id(issue_url) {
+                Some(n) => format!("{}\n- OP#{}", m, n),
+                None => m,
+            }
+        }
     }
 }
 
+use regex::Regex;
+
+fn extract_id(url: &str) -> Option<u32> {
+    // Cette regex capture le dernier segment numérique si l’URL se termine par :
+    // - /work_packages/<id>
+    // - /wp/<id>
+    // Et accepte n'importe quel segment avant.
+    let re = Regex::new(r"/(?:work_packages|wp)/(\d+)$").unwrap();
+
+    re.captures(url)
+        .and_then(|caps| caps.get(1))
+        .and_then(|m| m.as_str().parse::<u32>().ok())
+}
+
 #[cfg(test)]
 mod tests {
     use crate::planning::utils::{append_related_issues, IssueRelated};
@@ -80,7 +100,8 @@ mod tests {
             r#"
 ## Related issues
 
-- [https://example/wp/1](https://example/wp/1)"#,
+- [https://example/wp/1](https://example/wp/1)
+- OP#1"#,
             append_related_issues(&issue, &("".to_string()))
         );
     }
@@ -97,7 +118,8 @@ Some content
 
 ## Related issues
 
-- [https://example/wp/1](https://example/wp/1)"#,
+- [https://example/wp/1](https://example/wp/1)
+- OP#1"#,
             append_related_issues(
                 &issue,
                 &"Something happens.\n\
@@ -123,7 +145,8 @@ Some content
 ## Related issues
 
 - [https://example/wp/2](https://example/wp/2)
-- [https://example/wp/1](https://example/wp/1)"#,
+- [https://example/wp/1](https://example/wp/1)
+- OP#1"#,
             append_related_issues(
                 &issue,
                 &r#"Something happens.
@@ -154,6 +177,7 @@ Some content
 
 - [https://example/wp/2](https://example/wp/2)
 - [https://example/wp/1](https://example/wp/1)
+- OP#1
 
 ## Other content