Revert "Add version control system functionality with branch management, history tracking, and merge operations"

This reverts commit 939eaed201.

history_tracking/mixins.py

@@ -1,11 +1,9 @@
 # history_tracking/mixins.py
 from django.db import models
 from django.conf import settings
-from django.contrib.contenttypes.fields import GenericRelation
 
 class HistoricalChangeMixin(models.Model):
     """Mixin for historical models to track changes"""
-    comments = GenericRelation('CommentThread', related_query_name='historical_record')
     id = models.BigIntegerField(db_index=True, auto_created=True, blank=True)
     history_date = models.DateTimeField()
     history_id = models.AutoField(primary_key=True)
@@ -35,7 +33,6 @@ class HistoricalChangeMixin(models.Model):
 
     @property
     def diff_against_previous(self):
-        """Get enhanced diff with syntax highlighting and metadata"""
         prev_record = self.prev_record
         if not prev_record:
             return {}
@@ -57,69 +54,11 @@ class HistoricalChangeMixin(models.Model):
                     old_value = getattr(prev_record, field)
                     new_value = getattr(self, field)
                     if old_value != new_value:
-                        field_type = self._meta.get_field(field).get_internal_type()
-                        syntax_type = self._get_syntax_type(field_type)
-                        changes[field] = {
-                            "old": str(old_value),
-                            "new": str(new_value),
-                            "syntax_type": syntax_type,
-                            "metadata": {
-                                "field_type": field_type,
-                                "comment_anchor_id": f"{self.history_id}_{field}",
-                                "line_numbers": self._compute_line_numbers(old_value, new_value)
-                            }
-                        }
+                        changes[field] = {"old": str(old_value), "new": str(new_value)}
                 except AttributeError:
                     continue
         return changes
 
-    def _get_syntax_type(self, field_type):
-        """Map Django field types to syntax highlighting types"""
-        syntax_map = {
-            'TextField': 'text',
-            'JSONField': 'json',
-            'FileField': 'path',
-            'ImageField': 'path',
-            'URLField': 'url',
-            'EmailField': 'email',
-            'CodeField': 'python'  # Custom field type for code
-        }
-        return syntax_map.get(field_type, 'text')
-
-    def _compute_line_numbers(self, old_value, new_value):
-        """Compute line numbers for diff navigation"""
-        old_lines = str(old_value).count('\n') + 1
-        new_lines = str(new_value).count('\n') + 1
-        return {
-            "old": list(range(1, old_lines + 1)),
-            "new": list(range(1, new_lines + 1))
-        }
-
-    def get_structured_diff(self, other_version=None):
-        """Get structured diff between two versions with enhanced metadata"""
-        compare_to = other_version or self.prev_record
-        if not compare_to:
-            return None
-
-        diff_data = self.diff_against_previous
-        return {
-            "changes": diff_data,
-            "metadata": {
-                "timestamp": self.history_date.isoformat(),
-                "user": self.history_user_display,
-                "change_type": self.history_type,
-                "reason": self.history_change_reason,
-                "performance": {
-                    "computation_time": None  # To be filled by frontend
-                }
-            },
-            "navigation": {
-                "next_id": None,  # To be filled by frontend
-                "prev_id": None,  # To be filled by frontend
-                "current_position": None  # To be filled by frontend
-            }
-        }
-
     @property
     def history_user_display(self):
         """Get a display name for the history user"""