Feature: Add path filter for Forgejo repository imports

- Added path_filter parameter to fetch_forgejo_repo_markdown_files()
- Filter supports wildcard patterns (e.g., 'posts/*/index.md')
- Fixed hardcoded base URL - now detects git.rpi-virtuell.de and other instances
- Added --filter command line option for repo mode
- Updated help text with filter examples
- Enables selective import of specific markdown files from repository

Usage: python workflow.py --repo <URL> [branch] --filter 'Website/content/posts/*/index.md'
Example: Imports only index.md files from posts subdirectories (59 files found)

workflow.py

@@ -279,13 +279,15 @@ def process_post(wp_api: WordPressAPI, post_config: Dict[str, Any],
     return post_id
 
 
-def fetch_forgejo_repo_markdown_files(repo_url: str, branch: str = 'main') -> List[str]:
+def fetch_forgejo_repo_markdown_files(repo_url: str, branch: str = 'main', 
+                                      path_filter: str = None) -> List[str]:
     """
     Holt alle Markdown-URLs aus einem Forgejo-Repository
     
     Args:
         repo_url: URL zum Repository (z.B. https://codeberg.org/user/repo)
         branch: Branch-Name (Standard: main)
+        path_filter: Optionaler Filter für Pfade (z.B. 'posts/*/index.md')
         
     Returns:
         Liste von URLs zu Markdown-Dateien
@@ -302,17 +304,23 @@ def fetch_forgejo_repo_markdown_files(repo_url: str, branch: str = 'main') -> Li
     owner = parts[-2]
     repo = parts[-1]
     
-    # API-URL ermitteln
+    # Basis-URL ermitteln (für Raw-URLs)
     if 'codeberg.org' in repo_url:
+        base_url = 'https://codeberg.org'
         api_base = 'https://codeberg.org/api/v1'
+    elif 'git.rpi-virtuell.de' in repo_url:
+        base_url = 'https://git.rpi-virtuell.de'
+        api_base = 'https://git.rpi-virtuell.de/api/v1'
     elif 'gitea' in repo_url or 'forgejo' in repo_url:
         # Generischer Ansatz für selbst-gehostete Instanzen
         base_parts = repo_url.split('/')[:3]
-        api_base = '/'.join(base_parts) + '/api/v1'
+        base_url = '/'.join(base_parts)
+        api_base = base_url + '/api/v1'
     else:
         print(f"Warnung: Unbekannte Forgejo-Instanz, versuche generischen API-Pfad")
         base_parts = repo_url.split('/')[:3]
-        api_base = '/'.join(base_parts) + '/api/v1'
+        base_url = '/'.join(base_parts)
+        api_base = base_url + '/api/v1'
     
     api_url = f"{api_base}/repos/{owner}/{repo}/git/trees/{branch}?recursive=true"
     
@@ -324,8 +332,17 @@ def fetch_forgejo_repo_markdown_files(repo_url: str, branch: str = 'main') -> Li
         markdown_files = []
         for item in data.get('tree', []):
             if item['type'] == 'blob' and item['path'].endswith('.md'):
+                # Filter anwenden falls vorhanden
+                if path_filter:
+                    # Konvertiere Wildcard-Filter zu regex-Pattern
+                    # z.B. 'posts/*/index.md' -> '^posts/[^/]+/index\.md$'
+                    import re
+                    pattern = path_filter.replace('*', '[^/]+').replace('.', r'\.')
+                    if not re.match(f'^{pattern}$', item['path']):
+                        continue
+                
                 # Raw-URL konstruieren
-                raw_url = f"https://codeberg.org/{owner}/{repo}/raw/branch/{branch}/{item['path']}"
+                raw_url = f"{base_url}/{owner}/{repo}/raw/branch/{branch}/{item['path']}"
                 markdown_files.append(raw_url)
         
         return markdown_files
@@ -385,12 +402,21 @@ def main():
             repo_index = sys.argv.index('--forgejo-repo') if '--forgejo-repo' in sys.argv else sys.argv.index('--repo')
             if len(sys.argv) > repo_index + 1:
                 repo_url = sys.argv[repo_index + 1]
-                branch = sys.argv[repo_index + 2] if len(sys.argv) > repo_index + 2 else 'main'
+                branch = sys.argv[repo_index + 2] if len(sys.argv) > repo_index + 2 and not sys.argv[repo_index + 2].startswith('--') else 'main'
+                
+                # Pfad-Filter für spezifische Dateien (z.B. nur index.md in posts/)
+                path_filter = None
+                if '--filter' in sys.argv:
+                    filter_index = sys.argv.index('--filter')
+                    if len(sys.argv) > filter_index + 1:
+                        path_filter = sys.argv[filter_index + 1]
                 
                 print(f"Forgejo-Modus: Verarbeite Repository: {repo_url}")
                 print(f"Branch: {branch}")
+                if path_filter:
+                    print(f"Filter: {path_filter}")
                 
-                markdown_urls = fetch_forgejo_repo_markdown_files(repo_url, branch)
+                markdown_urls = fetch_forgejo_repo_markdown_files(repo_url, branch, path_filter)
                 
                 if not markdown_urls:
                     print("Keine Markdown-Dateien im Repository gefunden")
@@ -452,7 +478,11 @@ def main():
         print("\nVerwendung:")
         print("  python workflow.py [config.yaml]                    # YAML-Konfiguration")
         print("  python workflow.py <URL>                            # Einzelne Markdown-URL")
-        print("  python workflow.py --repo <REPO_URL> [branch] # Forgejo-Repository")
+        print("  python workflow.py --repo <REPO_URL> [branch]       # Forgejo-Repository (alle .md)")
+        print("  python workflow.py --repo <REPO_URL> [branch] --filter <pattern>  # Mit Filter")
+        print("\nFilter-Beispiele:")
+        print("  --filter 'posts/*/index.md'                         # Nur index.md in posts/-Unterverzeichnissen")
+        print("  --filter 'Website/content/posts/*/index.md'         # Mit vollständigem Pfad")
         sys.exit(1)
     
     print(f"Lade Konfiguration aus: {config_file}")