# Backend Validation Report - TASK-005, TASK-006, TASK-007

**Date:** 2026-04-07  
**Backend Version:** 0.4.0  
**Status:** ✅ COMPLETE

---

## TASK-005: Backend Health Check Results

### API Endpoints Tested

| Endpoint | Method | Status |
|----------|--------|--------|
| `/health` | GET | ✅ 200 OK |
| `/api/v1/scenarios` | GET | ✅ 200 OK |
| `/api/v1/scenarios` | POST | ✅ 201 Created |
| `/api/v1/scenarios/{id}/reports` | POST | ✅ 202 Accepted |
| `/api/v1/scenarios/{id}/reports` | GET | ✅ 200 OK |
| `/api/v1/reports/{id}/status` | GET | ✅ 200 OK |
| `/api/v1/reports/{id}/download` | GET | ✅ 200 OK |
| `/api/v1/reports/{id}` | DELETE | ✅ 204 No Content |

### Report Generation Tests

- **PDF Generation**: ✅ Working (generates valid PDF files ~2KB)
- **CSV Generation**: ✅ Working (generates valid CSV files)
- **File Storage**: ✅ Files stored in `storage/reports/{scenario_id}/{report_id}.{format}`

### Rate Limiting Test

- **Limit**: 10 downloads per minute
- **Test Results**:
  - Requests 1-10: ✅ HTTP 200 OK
  - Request 11+: ✅ HTTP 429 Too Many Requests
- **Status**: Working correctly

### Cleanup Test

- **Function**: `cleanup_old_reports(max_age_days=30)`
- **Test Result**: ✅ Successfully removed files older than 30 days
- **Status**: Working correctly

---

## TASK-006: Backend Bugfixes Applied

### Bugfix 1: Report ID Generation Error
**File**: `src/api/v1/reports.py`  
**Issue**: Report ID generation using `UUID(int=datetime.now().timestamp())` caused TypeError because timestamp returns a float, not int.  
**Fix**: Changed to use `uuid4()` for proper UUID generation.

```python
# Before:
report_id = UUID(int=datetime.now().timestamp())

# After:
report_id = uuid4()
```

### Bugfix 2: Database Column Mismatch - Reports Table
**Files**: 
- `alembic/versions/e80c6eef58b2_create_reports_table.py`
- `src/models/report.py`

**Issue**: Migration used `metadata` column but model expected `extra_data`. Also missing `created_at` and `updated_at` columns from TimestampMixin.  
**Fix**: 
1. Changed migration to use `extra_data` column name
2. Added `created_at` and `updated_at` columns to migration

### Bugfix 3: Database Column Mismatch - Scenario Metrics Table
**File**: `alembic/versions/5e247ed57b77_create_scenario_metrics_table.py`  
**Issue**: Migration used `metadata` column but model expected `extra_data`.  
**Fix**: Changed migration to use `extra_data` column name.

### Bugfix 4: Report Sections Default Value Error
**File**: `src/schemas/report.py`  
**Issue**: Default value for `sections` field was a list of strings instead of ReportSection enum values, causing AttributeError when accessing `.value`.  
**Fix**: Changed default to use enum values.

```python
# Before:
sections: List[ReportSection] = Field(
    default=["summary", "costs", "metrics", "logs", "pii"],
    ...
)

# After:
sections: List[ReportSection] = Field(
    default=[ReportSection.SUMMARY, ReportSection.COSTS, ReportSection.METRICS, ReportSection.LOGS, ReportSection.PII],
    ...
)
```

### Bugfix 5: Database Configuration
**Files**:
- `src/core/database.py`
- `alembic.ini`
- `.env`

**Issue**: Database URL was using incorrect credentials (`app/changeme` instead of `postgres/postgres`).  
**Fix**: Updated default database URLs to match Docker container credentials.

### Bugfix 6: API Version Update
**File**: `src/main.py`  
**Issue**: API version was still showing 0.2.0 instead of 0.4.0.  
**Fix**: Updated version string to "0.4.0".

---

## TASK-007: API Documentation Verification

### OpenAPI Schema Status: ✅ Complete

**API Information:**
- Title: mockupAWS
- Version: 0.4.0
- Description: AWS Cost Simulation Platform

### Documented Endpoints

All /reports endpoints are properly documented:

1. `POST /api/v1/scenarios/{scenario_id}/reports` - Generate a report
2. `GET /api/v1/scenarios/{scenario_id}/reports` - List scenario reports
3. `GET /api/v1/reports/{report_id}/status` - Check report status
4. `GET /api/v1/reports/{report_id}/download` - Download report
5. `DELETE /api/v1/reports/{report_id}` - Delete report

### Documented Schemas

All Report schemas are properly documented:

- `ReportCreateRequest` - Request body for report creation
- `ReportFormat` - Enum: pdf, csv
- `ReportSection` - Enum: summary, costs, metrics, logs, pii
- `ReportStatus` - Enum: pending, processing, completed, failed
- `ReportResponse` - Report data response
- `ReportStatusResponse` - Status check response
- `ReportList` - Paginated list of reports
- `ReportGenerateResponse` - Generation accepted response

---

## Summary

### Backend Status: ✅ STABLE

All critical bugs have been fixed and the backend is now stable and fully functional:

- ✅ All API endpoints respond correctly
- ✅ PDF report generation works
- ✅ CSV report generation works
- ✅ Rate limiting (10 downloads/minute) works
- ✅ File cleanup (30 days) works
- ✅ API documentation is complete and accurate
- ✅ Error handling is functional

### Files Modified

1. `src/api/v1/reports.py` - Fixed UUID generation
2. `src/schemas/report.py` - Fixed default sections value
3. `src/core/database.py` - Updated default DB URL
4. `src/main.py` - Updated API version
5. `alembic.ini` - Updated DB URL
6. `.env` - Created with correct credentials
7. `alembic/versions/e80c6eef58b2_create_reports_table.py` - Fixed columns
8. `alembic/versions/5e247ed57b77_create_scenario_metrics_table.py` - Fixed column name

---

**Report Generated By:** @backend-dev  
**Next Steps:** Backend is ready for integration testing with frontend.