Implement Complete Backend API with GetForUserAsync and Icon Support

[aryanthopate]

🎯 Overview

This PR implements complete backend API functionality for the CommBank server, including MongoDB integration, icon support, and the GetForUserAsync endpoint for user-specific goal retrieval.

✅ Features Implemented

1. MongoDB Integration & Database Seeding

• Connected to MongoDB Atlas cluster
• Implemented complete database seeding with sample data
• Added users, accounts, goals, transactions, and tags
• Included sample icons for comprehensive testing

2. Updated Goal Model with Icon Field

• Added optional public string? Icon { get; set; } field
• Maintained MongoDB BSON serialization attributes
• Ensured backward compatibility with existing data

3. Complete GoalsService Implementation

• Implemented all CRUD operations for goals
• Added GetForUserAsync method for user-specific queries
• Proper MongoDB.Driver integration with async/await
• Comprehensive error handling and data validation

4. Enhanced GoalController

• Added GetForUser endpoint: GET /api/Goal/User/{id}
• Updated all endpoints to support icon field
• Proper HTTP status codes and error responses
• Full REST API compliance

5. Database Seeding System

• Automatic database population on startup
• Sample data with icons for testing
• Clean data management and reset functionality
• Production-ready seeding implementation

🔧 Technical Implementation

Files Modified:

• Models/Goal.cs - Added Icon field with MongoDB attributes
• Services/GoalsService.cs - Complete service layer implementation
• Services/IGoalsService.cs - Updated interface with GetForUserAsync
• Controllers/GoalController.cs - Added GetForUser endpoint
• Data/SeedDatabase.cs - Database seeding implementation
• Program.cs - Updated to call seeding on startup
• Secrets.json - MongoDB connection configuration

API Integration:

• ✅ MongoDB Atlas connection established
• ✅ Complete CRUD operations for goals
• ✅ User-specific goal retrieval
• ✅ Icon field persistence across all operations
• ✅ Proper error handling and validation

🎨 Database Schema

Goal Collection Structure:

{
  "_id": "ObjectId",
  "name": "string",
  "targetAmount": "number",
  "targetDate": "Date",
  "balance": "number",
  "created": "Date",
  "userId": "ObjectId",
  "transactionIds": ["ObjectId"],
  "tagIds": ["ObjectId"],
  "icon": "string"  // ✅ NEW FIELD
}

[gitguardian]

⚠️ GitGuardian has uncovered 1 secret following the scan of your pull request.

Please consider investigating the findings and remediating the incidents. Failure to do so may lead to compromising the associated services or software components.

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🔎 Detected hardcoded secret in your pull request

GitGuardian id	GitGuardian status	Secret	Commit	Filename
-	-	MongoDB Credentials	2e8056d	CommBank-Server/Secrets.json	View secret

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