Update the README.md

Author: Jetlum

README.md

@@ -1,6 +1,6 @@
 # Wallet Alert Service
 
-A Go-based microservice that monitors Ethereum wallet activities and sends customized alerts based on user preferences.
+A Go-based microservice that monitors Ethereum wallet activities and cryptocurrency prices, sending customized alerts based on user preferences.
 
 ## Features
 
@@ -9,31 +9,40 @@ A Go-based microservice that monitors Ethereum wallet activities and sends custo
   - Detects large token transfers (> 1 ETH)
   - Identifies NFT transfers for popular collections (BAYC, Moonbirds)
 
+- **Cryptocurrency Price Alerts**
+  - Real-time price monitoring via CoinGecko API
+  - Support for multiple cryptocurrencies (BTC, ETH)
+  - Customizable price thresholds
+  - Upper and lower bound price alerts
+
 - **Customizable User Alerts**
   - Email notifications via SendGrid
   - Configurable alert thresholds
   - Per-wallet notification preferences
-
-- **Event Types**
-  - Large transfers (> 1 ETH)
-  - NFT transfers
-  - Custom threshold alerts
+  - Price alert preferences
 
 ## Architecture
 
 ### Core Components
 
 - **Event Detection**: [`nfts.NFTDetector`](nft/nftdetector.go) for NFT transfers
-- **Notification Service**: [`services.EmailNotification`](services/email_notifier.go) for sending alerts
+- **Price Monitoring**: [`services.PriceMonitor`](services/price_monitor.go) for cryptocurrency prices
+- **Alert Services**: 
+  - [`services.PriceAlertService`](services/price_alert.go) for price alerts
+  - [`services.EmailNotification`](services/email_notifier.go) for notifications
 - **Data Storage**: GORM-based PostgreSQL integration
 - **Repository Layer**: 
   - [`EventRepository`](repository/event_repository.go) for event storage
   - [`UserPreferenceRepository`](repository/user_preference.go) for user preferences
+  - [`PriceAlertRepository`](repository/price_alert_repository.go) for price alerts
+- **Mock Layer**:
+  - [`mock`](mock/) package for testing with mock implementations
 
 ### Models
 
 - [`Event`](models/event.go): Stores transaction details and event types
 - [`UserPreference`](models/models.go): Manages user notification preferences
+- [`PriceAlert`](models/models.go): Stores cryptocurrency price alert settings
 
 ## Installation
 
@@ -59,6 +68,9 @@ Create a `config.yaml` file in the root directory with the following content:
 		url: "postgresql://username:password@localhost:5432/dbname"
 	sendgrid:
 		api_key: "YOUR_SENDGRID_API_KEY"
+	coingecko:
+  		api_key: "YOUR_COINGECKO_API_KEY"
+	price_check_interval: 1  # Interval in minutes for price checking
 
 ## Usage
 
@@ -68,13 +80,23 @@ Create a `config.yaml` file in the root directory with the following content:
 
 2.	**Configure user preferences**
 
+		// Transaction alerts
 		userPreference := &models.UserPreference{
 			UserID: "user@example.com",
 			WalletAddress: "0x...",
 			MinEtherValue: "1000000000000000000", // 1 ETH
 			TrackNFTs: true,
 			EmailNotification: true,
 		}
+
+		// Price alerts
+		priceAlert := &models.PriceAlert{
+			UserID: "user@example.com",
+			CryptocurrencyID: "BTC",
+			ThresholdPrice: "50000.00",
+			IsUpperBound: true,
+			EmailNotification: true,
+		}
 
 ## Testing
 
@@ -87,6 +109,18 @@ Create a `config.yaml` file in the root directory with the following content:
 		go test -v ./services/... // Test notification services
 		go test -v ./repository/... // Test repositories
 
+## Development
+Project Structure
+
+	├── config/         # Configuration management
+	├── database/       # Database initialization and connection
+	├── models/         # Data models and validation
+	├── nft/            # NFT detection logic
+	├── repository/     # Data access layer
+	├── services/       # Business logic and notifications
+	├── mock/           # Mock implementations for testing
+	└── main.go        # Application entry point
+
 ## Key Components
 
 **NFT Detection**:
@@ -99,12 +133,21 @@ Create a `config.yaml` file in the root directory with the following content:
 	Real-time block monitoring
 	Transaction filtering and categorization
 	Event creation and storage
+
+**Price Monitoring**:
+
+	Real-time cryptocurrency price tracking
+	Configurable check intervals
+	Support for multiple cryptocurrencies
+	Threshold-based alerts
+	Notification System
 
 **Notification System**:
 
 	Email notifications via SendGrid
 	User preference-based filtering
 	Customizable notification templates
+	Support for both transaction and price alerts
 
 ## Development
 Project Structure
@@ -133,4 +176,6 @@ Set test environment:
 	go-ethereum: Ethereum client
 	sendgrid-go: Email notifications
 	gorm: Database ORM
-	viper: Configuration management
+	viper: Configuration management
+	coingecko-api: CoinGecko API client
+