Refactor context RefName and RepoAssignment (#33226)

The `ctx.Repo.RefName` was used to be a "short name", it causes a lot of
ambiguity.

This PR does some refactoring and use `RefFullName` to replace the
legacy `RefName`, and simplify RepoAssignment

modules/git/repo_archive.go

@@ -16,37 +16,35 @@ import (
 type ArchiveType int
 
 const (
-	// ZIP zip archive type
-	ZIP ArchiveType = iota + 1
-	// TARGZ tar gz archive type
-	TARGZ
-	// BUNDLE bundle archive type
-	BUNDLE
+	ArchiveUnknown ArchiveType = iota
+	ArchiveZip                 // 1
+	ArchiveTarGz               // 2
+	ArchiveBundle              // 3
 )
 
-// String converts an ArchiveType to string
+// String converts an ArchiveType to string: the extension of the archive file without prefix dot
 func (a ArchiveType) String() string {
 	switch a {
-	case ZIP:
+	case ArchiveZip:
 		return "zip"
-	case TARGZ:
+	case ArchiveTarGz:
 		return "tar.gz"
-	case BUNDLE:
+	case ArchiveBundle:
 		return "bundle"
 	}
 	return "unknown"
 }
 
-func ToArchiveType(s string) ArchiveType {
-	switch s {
-	case "zip":
-		return ZIP
-	case "tar.gz":
-		return TARGZ
-	case "bundle":
-		return BUNDLE
+func SplitArchiveNameType(s string) (string, ArchiveType) {
+	switch {
+	case strings.HasSuffix(s, ".zip"):
+		return strings.TrimSuffix(s, ".zip"), ArchiveZip
+	case strings.HasSuffix(s, ".tar.gz"):
+		return strings.TrimSuffix(s, ".tar.gz"), ArchiveTarGz
+	case strings.HasSuffix(s, ".bundle"):
+		return strings.TrimSuffix(s, ".bundle"), ArchiveBundle
 	}
-	return 0
+	return s, ArchiveUnknown
 }
 
 // CreateArchive create archive content to the target path