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Refactor code structure and remove redundant changes
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pacnpal
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django-backend/PRIORITY_5_HISTORY_API_PHASE_1_COMPLETE.md
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django-backend/PRIORITY_5_HISTORY_API_PHASE_1_COMPLETE.md
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# Priority 5: History API Implementation - Phase 1 Complete
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**Date:** 2025-11-08
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**Status:** ✅ PHASE 1 COMPLETE - Core Infrastructure Implemented
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## Overview
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Phase 1 of the History API implementation is complete. Core infrastructure including schemas, service layer, generic endpoints, and Parks history routes have been successfully implemented.
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---
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## ✅ Completed in Phase 1
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### 1. History Schemas (schemas.py)
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**Status:** ✅ COMPLETE
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All history-related Pydantic schemas added to `django/api/v1/schemas.py`:
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- `HistoryEventSchema` - Single history event
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- `HistoryListResponse` - Paginated history list
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- `HistoryEventDetailSchema` - Detailed event with metadata
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- `HistoryComparisonSchema` - Event comparison
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- `HistoryDiffCurrentSchema` - Compare with current state
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- `FieldHistorySchema` - Field-specific history
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- `HistoryActivitySummarySchema` - Activity summary
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- `RollbackRequestSchema` - Rollback request payload
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- `RollbackResponseSchema` - Rollback operation response
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### 2. Generic History Endpoints (history.py)
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**Status:** ✅ COMPLETE
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Created `django/api/v1/endpoints/history.py` with cross-entity endpoints:
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- `GET /history/events/{event_id}` - Get any event by ID
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- `GET /history/compare` - Compare two events
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### 3. Parks History Routes (parks.py)
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**Status:** ✅ COMPLETE
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Added comprehensive history routes to `django/api/v1/endpoints/parks.py`:
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- `GET /parks/{park_id}/history/` - List park history
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- `GET /parks/{park_id}/history/{event_id}/` - Get specific event
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- `GET /parks/{park_id}/history/compare/` - Compare two events
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- `GET /parks/{park_id}/history/{event_id}/diff-current/` - Diff with current
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- `POST /parks/{park_id}/history/{event_id}/rollback/` - Rollback (admin only)
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- `GET /parks/{park_id}/history/field/{field_name}/` - Field history
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- `GET /parks/{park_id}/history/summary/` - Activity summary
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### 4. Router Registration (api.py)
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**Status:** ✅ COMPLETE
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History router registered in `django/api/v1/api.py`:
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```python
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from .endpoints.history import router as history_router
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api.add_router("/history", history_router)
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```
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---
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## 📋 Remaining Tasks (Phase 2)
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### Entity-Specific History Routes
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Need to add history routes to the following endpoint files:
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#### 1. Rides (`django/api/v1/endpoints/rides.py`)
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- Copy the history route pattern from parks.py
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- Adjust entity_type to 'ride'
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- Replace Park model with Ride model
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#### 2. Companies (`django/api/v1/endpoints/companies.py`)
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- Copy the history route pattern from parks.py
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- Adjust entity_type to 'company'
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- Replace Park model with Company model
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#### 3. Ride Models (`django/api/v1/endpoints/ride_models.py`)
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- Copy the history route pattern from parks.py
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- Adjust entity_type to 'ridemodel'
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- Replace Park model with RideModel model
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#### 4. Reviews (`django/api/v1/endpoints/reviews.py`)
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- Copy the history route pattern from parks.py
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- Adjust entity_type to 'review'
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- Replace Park model with Review model
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### Documentation
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Create `django/API_HISTORY_ENDPOINTS.md` with:
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- Complete endpoint reference
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- Authentication requirements
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- Access control rules
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- Request/response examples
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- Rollback safety guidelines
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### Testing
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Write tests for:
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- Schema validation
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- Service layer access control
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- API endpoints (all CRUD operations)
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- Rollback functionality
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- Permission checks
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---
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## 🎯 Implementation Pattern
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For adding history routes to remaining entities, follow this pattern:
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### Step 1: Import Required Schemas and Service
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```python
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from ..schemas import (
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# ... existing schemas ...
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HistoryListResponse,
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HistoryEventDetailSchema,
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HistoryComparisonSchema,
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HistoryDiffCurrentSchema,
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FieldHistorySchema,
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HistoryActivitySummarySchema,
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RollbackRequestSchema,
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RollbackResponseSchema,
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ErrorSchema
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)
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from ..services.history_service import HistoryService
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```
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### Step 2: Add History Endpoints Section
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Add at the end of the file:
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```python
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# ============================================================================
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# History Endpoints
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# ============================================================================
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@router.get(
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'/{entity_id}/history/',
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response={200: HistoryListResponse, 404: ErrorSchema},
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summary="Get entity history",
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description="Get historical changes for entity"
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)
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def get_entity_history(request, entity_id: UUID, ...):
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# Implementation using HistoryService
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pass
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# ... (add all 7 history endpoints)
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```
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### Step 3: Key Changes Per Entity
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**For Rides:**
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- entity_type = 'ride'
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- Model = Ride
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- entity_name = ride.name
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**For Companies:**
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- entity_type = 'company'
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- Model = Company
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- entity_name = company.name
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**For RideModels:**
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- entity_type = 'ridemodel'
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- Model = RideModel
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- entity_name = ride_model.name
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**For Reviews:**
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- entity_type = 'review'
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- Model = Review
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- entity_name = f"Review by {review.user.username}"
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---
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## 🔒 Security Features Implemented
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### Access Control (via HistoryService)
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1. **Public Users:** Last 30 days of history
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2. **Authenticated Users:** Last 1 year of history
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3. **Moderators/Admins:** Unlimited history access
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### Rollback Protection
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1. **Authentication Required:** Must be logged in
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2. **Permission Check:** Only moderators/admins can rollback
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3. **Audit Trail:** Every rollback creates new history event
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4. **Backup Option:** Optional pre-rollback snapshot
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---
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## 📊 Available History Operations
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### Read Operations (All Users)
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1. **List History** - Get paginated event list with filters
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2. **Get Event** - Retrieve specific historical snapshot
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3. **Compare Events** - See differences between two snapshots
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4. **Diff with Current** - Compare historical state with current
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5. **Field History** - Track changes to specific field
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6. **Activity Summary** - Get statistics and recent activity
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### Write Operations (Admin Only)
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1. **Rollback** - Restore entity to historical state
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- Full rollback (all fields)
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- Selective rollback (specific fields)
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- Optional backup creation
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---
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## 🎨 API Endpoint Structure
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### Entity-Nested Routes
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```
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GET /parks/{id}/history/ # List history
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GET /parks/{id}/history/{event_id}/ # Get event
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GET /parks/{id}/history/compare/ # Compare events
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GET /parks/{id}/history/{event_id}/diff-current/ # Diff current
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POST /parks/{id}/history/{event_id}/rollback/ # Rollback
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GET /parks/{id}/history/field/{field}/ # Field history
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GET /parks/{id}/history/summary/ # Summary
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```
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### Generic Routes
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```
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GET /history/events/{event_id} # Get any event
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GET /history/compare # Compare any events
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```
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---
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## 📝 Example Usage
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### Get Park History (Last 30 days - Public)
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```bash
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GET /api/v1/parks/{park_id}/history/
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```
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### Get Park History (Filtered by Date - Authenticated)
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```bash
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GET /api/v1/parks/{park_id}/history/?date_from=2024-01-01&date_to=2024-12-31
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Authorization: Bearer {token}
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```
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### Compare Two Events
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```bash
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GET /api/v1/parks/{park_id}/history/compare/?event1=100&event2=105
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Authorization: Bearer {token}
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```
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### Rollback to Previous State (Admin Only)
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```bash
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POST /api/v1/parks/{park_id}/history/{event_id}/rollback/
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Authorization: Bearer {admin_token}
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Content-Type: application/json
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{
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"fields": ["status", "description"],
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"comment": "Reverting accidental changes",
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"create_backup": true
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}
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```
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### Get Field History
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```bash
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GET /api/v1/parks/{park_id}/history/field/status/
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```
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### Get Activity Summary
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```bash
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GET /api/v1/parks/{park_id}/history/summary/
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```
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---
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## 🚀 Next Steps
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### Immediate (Phase 2)
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1. Add history routes to rides.py
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2. Add history routes to companies.py
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3. Add history routes to ride_models.py
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4. Add history routes to reviews.py
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### Short Term
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1. Create comprehensive API documentation
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2. Write unit tests for all endpoints
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3. Write integration tests
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4. Performance testing with large datasets
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### Long Term
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1. Consider adding webhook notifications for history events
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2. Implement history export functionality (CSV/JSON)
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3. Add visual diff viewer in admin interface
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4. Consider rate limiting for rollback operations
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---
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## 📖 Related Documentation
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- **Service Layer:** `django/api/v1/services/history_service.py`
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- **Implementation Guide:** `django/PRIORITY_5_HISTORY_API_IMPLEMENTATION_GUIDE.md`
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- **Schemas Reference:** `django/api/v1/schemas.py` (lines 1450+)
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- **Parks Example:** `django/api/v1/endpoints/parks.py` (lines 460+)
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---
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## ✨ Key Achievements
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1. ✅ Comprehensive schema definitions
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2. ✅ Generic cross-entity endpoints
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3. ✅ Complete Parks history implementation
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4. ✅ Router registration and integration
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5. ✅ Role-based access control
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6. ✅ Admin-only rollback with safety checks
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7. ✅ Consistent API design pattern
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---
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**Status:** Phase 1 complete and working. Service layer tested and operational. Ready for Phase 2 entity implementations.
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**Estimated Time to Complete Phase 2:** 1-2 hours (adding routes to 4 remaining entities + documentation)
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