Update backend versionning

Author: merfanian

backend/version.py

@@ -1,2 +1,68 @@
 # Backend version information
-VERSION = "WILL BE ADDED BY CI/CD, DO NOT CHANGE HERE"
+import subprocess
+import os
+from pathlib import Path
+
+def get_version_from_git():
+    """Get version from git tags using the same logic as CI/CD."""
+    try:
+        # Get the directory where this file is located
+        backend_dir = Path(__file__).parent
+        project_root = backend_dir.parent
+        
+        # Change to project root directory
+        original_cwd = os.getcwd()
+        os.chdir(project_root)
+        
+        try:
+            # Get the latest needlectl tag
+            result = subprocess.run(
+                ["git", "tag", "-l", "needlectl/v*", "--sort=-v:refname"],
+                capture_output=True,
+                text=True,
+                check=True
+            )
+            tags = result.stdout.strip().split('\n')
+            
+            if not tags or tags == ['']:
+                # No tags found, use base version
+                base_version = "0.1.0"
+                commit_count = subprocess.run(
+                    ["git", "rev-list", "--count", "HEAD"],
+                    capture_output=True,
+                    text=True,
+                    check=True
+                ).stdout.strip()
+            else:
+                # Get the latest tag
+                latest_tag = tags[0]
+                # Extract version number without prefix
+                base_version = latest_tag.replace("needlectl/v", "")
+                
+                # Count commits since last tag
+                commit_count = subprocess.run(
+                    ["git", "rev-list", "--count", f"{latest_tag}..HEAD"],
+                    capture_output=True,
+                    text=True,
+                    check=True
+                ).stdout.strip()
+            
+            # Split the base version
+            major, minor, patch = map(int, base_version.split('.'))
+            
+            # Calculate new version
+            new_patch = patch + int(commit_count)
+            new_version = f"{major}.{minor}.{new_patch}"
+            
+            return new_version
+            
+        finally:
+            # Restore original working directory
+            os.chdir(original_cwd)
+            
+    except Exception as e:
+        # Fallback to a default version if git fails
+        return "0.1.0"
+
+# Get version dynamically from git
+VERSION = get_version_from_git()