adding refactor ability

mindforge.cronjob/internal/git/git.go

@@ -121,19 +121,31 @@ func (s *gitService) GetModifications(days int) (map[string]string, error) {
 			continue
 		}
 
+		originalFile := file
+
 		// Remove first folder from file path
 		file = strings.Join(strings.Split(file, "/")[1:], "/")
 
-		// Get the specific diff for this file
-		cmdDiff := exec.Command("git", "diff", baseCommit, "HEAD", "--", file)
+		// Note: 'git diff' compares the beginning and end trees, so it has no native concept
+		// of ignoring intermediate commits. To skip the changes made in "refactor" commits
+		// without using loops, we use `git log -p` combined with `--invert-grep` to
+		// natively output the diffs of only the non-refactor commits for this file.
+		rangeStr := "HEAD"
+		if baseCommit != "4b825dc642cb6eb9a060e54bf8d69288fbee4904" {
+			rangeStr = baseCommit + "..HEAD"
+		}
+
+		cmdDiff := exec.Command("git", "log", "-p", "-i", "--invert-grep", "--grep=refactor", rangeStr, "--", originalFile)
 		cmdDiff.Dir = s.repoDir
 		diffOut, err := cmdDiff.Output()
 		if err != nil {
-			return nil, fmt.Errorf("failed to get diff for file %s: %w", file, err)
+			return nil, fmt.Errorf("failed to get diff for file %s: %w", originalFile, err)
 		}
 
+		if len(diffOut) > 0 {
 			mods[file] = string(diffOut)
 		}
+	}
 
 	return mods, nil
 }