Smart Home Manager

A Java-based Smart Home CLI for managing devices, rooms, rules, and scenes. Demonstrates object-oriented design, SOLID principles, custom exceptions, and testing.

Features

• Devices: Light, Thermostat, Security Camera
• Rooms: Add/remove rooms, assign devices
• Scenes: Group device actions (e.g., “Movie Night”)
• Rules: Automate actions based on events/time
• Notifications: Alerts when rules are triggered
• Custom Exceptions:
  • DeviceNotFoundException – when a device does not exist
  • RoomNotFoundException – when a room does not exist
  • InvalidCommandException – for invalid CLI input
  • RuleConflictException – when rules conflict
  • SceneExecutionException – when a scene fails to execute

Build & Run with Gradle

Run CLI

./gradlew run --console=plain

Run Test

./gradlew test

Example CLI

1. Add Room
2. Add Device
3. List Rooms
4. Trigger Scene
5. Configure Rule
6. Exit

Sample Session

> Add Room: Living Room
> Add Device: Light L1, Thermostat T1, Camera C1
> Create Scene: Night Comfort → Lights off, Thermostat 68°F, Camera records
> Rule: At 11PM trigger "Night Comfort"

SOLID Design

• S: Each class has one role
• O: Add new devices/scenes without changing existing code
• L: All devices substitute the base Device type
• I: NotificationService exposes only necessary behavior
• D: High-level modules depend on abstractions, not concrete implementations