Merge branch 'dangerjs/improove_commit_messages' into 'master'

ci: danger: Improve check for git commit messages

Closes IDF-6856 and IDF-6970

See merge request espressif/esp-idf!22655

.gitlab/ci/pre_check.yml

@@ -170,14 +170,6 @@ check_artifacts_expire_time:
     # check if we have set expire time for all artifacts
     - python tools/ci/check_artifacts_expire_time.py
 
-check_commit_msg:
-  extends: .pre_check_template
-  script:
-    - git status
-    - git log -n10 --oneline ${PIPELINE_COMMIT_SHA}
-    # commit start with "WIP: " need to be squashed before merge
-    - 'git log --pretty=%s origin/master..${PIPELINE_COMMIT_SHA} -- | grep -i "^WIP:" && exit 1 || exit 0'
-
 check_test_scripts_build_test_rules:
   extends:
     - .pre_check_template

.gitlab/dangerjs/dangerfile.js

@@ -2,8 +2,6 @@
  * Modules with checks are stored in ".gitlab/dangerjs/<module_name>". To import them, use path relative to "dangerfile.js"
  */
 
-const checkMrCommits = require(`./mrCommitsCommitMessage.js`);
-
 async function runChecks() {
     // Checks for merge request title
     require("./mrTitleNoDraftOrWip.js")();

.gitlab/dangerjs/mrCommitsCommitMessage.js

@@ -1,26 +1,70 @@
 /**
- * Check commit message are descriptive enough (longer that 10 characters)
+ * Check if commit messages are sufficiently descriptive (not too short).
  *
- * #TODO: this simple logic will be improved in future MRs - Jira IDF-6856.
+ * Search for commit messages that appear to be automatically generated by Gitlab or temporary messages and report them.
  *
  * @dangerjs WARN
  */
+
 module.exports = function () {
-    const shortCommitMessageThreshold = 10; // commit message is considered too short below this number of characters
-    const mrCommit = danger.gitlab.commits;
+    const mrCommits = danger.gitlab.commits;
 
-    let shortCommitMessages = [];
-    for (let i = 0; i < mrCommit.length; i++) {
-        const commitMessage = mrCommit[i].message;
+    const detectRegexes = [
+        /^Rebased.*onto.*/i, // Automatically generated message by Gitlab
+        /^Fast-forwarded.*to.*/i, // Automatically generated message by Gitlab
+        /^Applied suggestion to.*/i, // Automatically generated message by Gitlab
+        /^Suggestion applied for line.*/i, // Automatically generated message by Gitlab
+        /^Opened merge request/i, // Automatically generated message by Gitlab
+        /^Merged.*/i, // Automatically generated message by Gitlab
+        /^Opened issue #\d+:.*/i, // Automatically generated message by Gitlab
+        /^Closed issue #\d+:.*/i, // Automatically generated message by Gitlab
+        /^Tagged.*as.*/i, // Automatically generated message by Gitlab
+        /^Deleted tag.*/i, // Automatically generated message by Gitlab
+        /^WIP.*/i, // Message starts with prefix "WIP"
+        /^Cleaned.*/i, // Message starts "Cleaned"
+        /clean ?up/i, // Message contains "clean up"
+        /^[^A-Za-z0-9\s].*/, // Message starts with special characters
+    ];
 
+    // Search for the messages in each commit
+    let partMessages = [];
+    for (const commit of mrCommits) {
+        const commitMessage = commit.message;
+        const commitMessageTitle = commit.title;
+
+        // Check if the commit message contains any Jira ticket references
+        const jiraTicketRegex = /[A-Z0-9]+-[0-9]+/g;
+        const jiraTicketMatches = commitMessage.match(jiraTicketRegex);
+        if (jiraTicketMatches) {
+            const jiraTicketNames = jiraTicketMatches.join(", ");
+            partMessages.push(
+                `- the commit message \`${commitMessageTitle}\` probably contains Jira ticket reference (\`${jiraTicketNames}\`). Please remove Jira tickets from commit messages.`
+            );
+            continue;
+        }
+
+        // Check if the commit message matches any regex from "detectRegexes"
+        if (detectRegexes.some((regex) => commitMessage.match(regex))) {
+            partMessages.push(
+                `- the commit message \`${commitMessageTitle}\` appears to be a temporary or automatically generated message`
+            );
+            continue;
+        }
+
+        // Check if the commit message is not too short
+        const shortCommitMessageThreshold = 20; // commit message is considered too short below this number of characters
         if (commitMessage.length < shortCommitMessageThreshold) {
-            shortCommitMessages.push(`- commit message: ${commitMessage}`);
+            partMessages.push(
+                `- the commit message \`${commitMessageTitle}\` may not be sufficiently descriptive`
+            );
         }
     }
 
-    if (shortCommitMessages.length) {
-        warn(`Some of your commit messages may not be sufficiently descriptive (are shorter than ${shortCommitMessageThreshold} characters):
-        \n${shortCommitMessages.join("")}
-        \nYou might consider squashing commits (simplifying branch history) or updating those short commit messages.`);
-    }
+	// Create report
+	if (partMessages.length) {
+		partMessages.sort();
+		let dangerMessage = `\nSome issues found for the commit messages in this MR:\n${partMessages.join('\n')}
+		\nPlease consider updating these commit messages. It is recommended to follow this [commit messages guide](https://gitlab.espressif.cn:6688/espressif/esp-idf/-/wikis/dev-proc/Commit-messages)`;
+		warn(dangerMessage);
+	}
 };

.gitlab/dangerjs/mrCommitsTooManyCommits.js

@@ -1,12 +1,10 @@
 /**
  * Check if MR has not an excessive numbers of commits (if squashed)
  *
- * #TODO: this simple logic will be improved in future MRs - Jira IDF-6856.
- *
  * @dangerjs INFO
  */
 module.exports = function () {
-    const tooManyCommitThreshold = 5; // above this number of commits, squash is recommended
+    const tooManyCommitThreshold = 2; // above this number of commits, squash commits is suggested
     const mrCommits = danger.gitlab.commits;
 
     if (mrCommits.length > tooManyCommitThreshold) {