# PR Review Checklist - Permission System Feature

## Summary
This PR adds a comprehensive permission system to drf-to-mkdoc, including:
- Permission detail pages
- Permission descriptions (short/long) from references.json or docstrings
- Permission filtering in endpoint list
- Permission display in endpoint detail pages
- Support for grouped permissions (AND/OR logic)

**Total Changes:** 16 files changed, 1001 insertions(+), 22 deletions(-)

---

## ✅ Code Quality Checks

### 1. Linting
- ✅ No linter errors found
- ✅ All imports are at the top of files
- ✅ No circular import issues

### 2. Code Style
- ✅ Consistent naming conventions
- ✅ Proper docstrings on all functions
- ✅ Type hints where appropriate
- ✅ No TODO/FIXME comments left in code

### 3. Unused Code
- ✅ All functions are being used
- ✅ No dead code detected
- ✅ No commented-out code blocks

### 4. Debug Statements
- ✅ Appropriate use of `logger.debug()` for error handling
- ✅ No `print()` statements
- ✅ No `console.log()` in production code (only debug/warn/error)

---

## 🧹 Cleanup Items

### 1. Temporary Design File
**File:** `PERMISSION_GROUP_DESIGNS.md`
**Status:** Untracked file (not in git)
**Action:** Should be removed or added to `.gitignore` if it's just design notes

**Recommendation:** Remove it since the nested table approach was reverted and no design has been implemented yet.

### 2. Code Review Notes
- All code follows Django/DRF conventions
- Backward compatibility maintained (supports both string and dict permission formats)
- Error handling is graceful (try/except blocks with logging)

---

## 📋 Files Changed

### Core Functionality
1. **`drf_to_mkdoc/utils/commons/schema_utils.py`**
   - Added `get_references()` - loads references.json
   - Added `get_permission_description()` - extracts short/long descriptions
   - Added `_truncate_description()` - helper for auto-truncation
   - Handles docstring inheritance correctly

2. **`drf_to_mkdoc/utils/schema.py`**
   - Added structured permission extraction (`_extract_permission_recursive_structured`)
   - Stores both flattened and structured permissions in metadata
   - Added `_flatten_permissions()` with display name calculation

3. **`drf_to_mkdoc/utils/endpoint_detail_generator.py`**
   - Added `_extract_permissions_data()` - extracts permissions for display
   - Added `_extract_all_permission_class_paths()` - for filtering
   - Added `_extract_permissions_with_display_names()` - for filter UI
   - Updated to include permissions in endpoint context

4. **`drf_to_mkdoc/utils/permission_detail_generator.py`** (NEW)
   - Generates individual permission detail pages
   - Only creates pages for permissions with descriptions

5. **`drf_to_mkdoc/utils/commons/path_utils.py`**
   - Added `get_permission_url()` - generates relative/absolute URLs
   - Added `camel_case_to_readable()` - converts class names to readable format

### Templates
6. **`drf_to_mkdoc/templates/endpoints/detail/permissions.html`** (NEW)
   - Displays permissions table in endpoint detail pages

7. **`drf_to_mkdoc/templates/endpoints/list/filters/permissions.html`** (NEW)
   - Custom dropdown filter for permissions with search

8. **`drf_to_mkdoc/templates/permissions/base.html`** (NEW)
   - Template for individual permission detail pages

### Frontend
9. **`drf_to_mkdoc/static/drf-to-mkdoc/javascripts/endpoints-filter.js`**
   - Added permission filter logic (AND logic, not OR)
   - Added "No Permissions" option
   - Custom dropdown with search functionality

10. **`drf_to_mkdoc/static/drf-to-mkdoc/stylesheets/endpoints/filter-section.css`**
    - Styles for custom permission dropdown
    - Checkbox list styling
    - Custom scrollbar

### Configuration
11. **`drf_to_mkdoc/conf/defaults.py`**
    - Added `REFERENCES_FILE` setting

12. **`drf_to_mkdoc/management/commands/build_endpoint_docs.py`**
    - Added permission page generation step

13. **`drf_to_mkdoc/templatetags/custom_filters.py`**
    - Added `to_json` filter (already existed, verified)

---

## 🔍 Potential Issues to Review

### 1. Permission URL Generation
- ✅ Fixed: Now uses relative paths (`../../../permissions/...`) from endpoint pages
- ✅ Fixed: Uses base path for file generation

### 2. Permission Description Priority
- ✅ Correctly implements: references.json > docstring > None
- ✅ Handles docstring inheritance (doesn't use parent class docstrings)

### 3. Filter Logic
- ✅ AND logic implemented (all selected permissions must be present)
- ✅ "No Permissions" option works correctly

### 4. Display Name Conversion
- ✅ camelCase conversion happens in Python (not JavaScript)
- ✅ Handles edge cases (all lowercase, mixed case, etc.)

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## 📝 Documentation

### Missing Documentation
- [ ] README update for new `REFERENCES_FILE` setting
- [ ] Documentation for `references.json` file structure
- [ ] Example `references.json` file

**Recommendation:** Consider adding documentation, but this can be done in a follow-up PR if needed.

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## ✅ Pre-PR Checklist

- [x] All tests pass (if applicable)
- [x] No linter errors
- [x] Code follows project conventions
- [x] Backward compatibility maintained
- [x] No hardcoded values or secrets
- [x] Error handling is appropriate
- [x] All functions have docstrings
- [ ] Remove temporary design file (`PERMISSION_GROUP_DESIGNS.md`)

---

## 🚀 Ready for PR?

**Status:** ✅ Almost ready - just need to remove the temporary design file

**Action Items:**
1. Remove `PERMISSION_GROUP_DESIGNS.md` (or add to .gitignore if keeping for reference)
2. Consider adding documentation for `references.json` (optional, can be follow-up)

**Overall Code Quality:** Excellent
- Clean, well-documented code
- Proper error handling
- Backward compatible
- No obvious bugs or issues

