WIP for activity modeling and migration.

.gitea/README.md

@@ -0,0 +1,49 @@
+# Gitea Actions for Vibing Project
+
+This directory contains Gitea Actions workflows for the Vibing project (both frontend and backend).
+
+## Workflows
+
+### Backend CI (`backend-ci.yml`)
+
+Runs Maven tests on the backend project.
+
+**Triggers:**
+- Push to `main` or `develop` branches
+- Pull requests to `main` or `develop` branches
+- Only when changes are made to files in the `backend/` directory
+
+**What it does:**
+1. Checks out the code
+2. Sets up Java 21 (Temurin distribution)
+3. Caches Maven dependencies for faster builds
+4. Runs `mvn test` in the backend directory
+5. Uploads test results as artifacts (retained for 7 days)
+
+**Requirements:**
+- Java 21
+- Maven
+- Ubuntu runner
+
+### Frontend CI (`frontend-ci.yml`)
+
+Runs linting and builds the frontend project.
+
+**Triggers:**
+- Push to `main` or `develop` branches
+- Pull requests to `main` or `develop` branches
+- Only when changes are made to files in the `frontend/` directory
+
+**What it does:**
+1. Checks out the code
+2. Sets up Node.js 18
+3. Caches npm dependencies for faster builds
+4. Installs dependencies with `npm ci`
+5. Runs ESLint for code quality checks
+6. Builds the project with `npm run build`
+7. Uploads build artifacts (retained for 7 days)
+
+**Requirements:**
+- Node.js 18
+- npm
+- Ubuntu runner

.gitea/workflows/backend-ci.yml

@@ -0,0 +1,44 @@
+name: Backend CI
+
+on:
+  push:
+    branches: [ main, develop ]
+    paths:
+      - 'backend/**'
+  pull_request:
+    branches: [ main, develop ]
+    paths:
+      - 'backend/**'
+
+jobs:
+  test:
+    name: Run Maven Tests
+    runs-on: ubuntu-latest
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+      
+    - name: Set up JDK 21
+      uses: actions/setup-java@v4
+      with:
+        java-version: '21'
+        distribution: 'temurin'
+        cache: 'maven'
+
+    - name: Set up Maven
+      uses: stCarolas/setup-maven@v5
+      with:
+        maven-version: '3.6.3'
+        
+    - name: Run Maven tests
+      working-directory: ./backend
+      run: mvn test
+      
+    - name: Upload test results
+      uses: actions/upload-artifact@v3
+      if: always()
+      with:
+        name: backend-test-results
+        path: backend/target/surefire-reports/
+        retention-days: 7 

README.md

@@ -0,0 +1,14 @@
+# Vibing application
+
+## Data model
+
+```mermaid
+classDiagram
+    class Activity {
+        +String name
+        +Location location
+        +Int priceRange
+        +List~String~ tags
+    }
+```
+

backend/.gitignore

@@ -0,0 +1,99 @@
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+replay_pid*
+
+# Maven
+target/
+pom.xml.tag
+pom.xml.releaseBackup
+pom.xml.versionsBackup
+pom.xml.next
+release.properties
+dependency-reduced-pom.xml
+buildNumber.properties
+.mvn/timing.properties
+.mvn/wrapper/maven-wrapper.jar
+
+# IDE files
+.idea/
+*.iws
+*.iml
+*.ipr
+.vscode/
+.settings/
+.project
+.classpath
+
+# OS generated files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# Application specific
+application-local.yml
+application-prod.yml
+*.db
+*.sqlite
+
+# Logs
+logs/
+*.log
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Coverage directory used by tools like istanbul
+coverage/
+
+# nyc test coverage
+.nyc_output
+
+# Dependency directories
+node_modules/
+
+# Optional npm cache directory
+.npm
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local 

backend/README.md

@@ -0,0 +1,193 @@
+# Vibing Backend
+
+A REST API backend service built with Spring Boot, Java 21, and Maven for the Vibing application.
+
+## Features
+
+- **RESTful API**: Complete CRUD operations for user management
+- **Spring Boot 3.2.0**: Latest Spring Boot version with Java 21 support
+- **JPA/Hibernate**: Database persistence with H2 in-memory database
+- **Spring Security**: Basic security configuration (extensible for production)
+- **API Documentation**: Swagger/OpenAPI 3 documentation
+- **Validation**: Input validation using Bean Validation
+- **Testing**: JUnit 5 test framework
+
+## Prerequisites
+
+- Java 21 or higher
+- Maven 3.6 or higher
+- IDE (IntelliJ IDEA, Eclipse, VS Code, etc.)
+
+## Getting Started
+
+### 1. Clone the Repository
+
+```bash
+git clone <repository-url>
+cd vibing/backend
+```
+
+### 2. Build the Project
+
+```bash
+mvn clean install
+```
+
+### 3. Run the Application
+
+```bash
+mvn spring-boot:run
+```
+
+The application will start on `http://localhost:8080`
+
+## API Endpoints
+
+### Base URL
+- **API Base**: `http://localhost:8080/api`
+- **Health Check**: `http://localhost:8080/api/health`
+- **Swagger UI**: `http://localhost:8080/swagger-ui.html`
+- **H2 Console**: `http://localhost:8080/h2-console`
+
+### User Management Endpoints
+
+| Method | Endpoint | Description |
+|--------|----------|-------------|
+| GET | `/api/users` | Get all users |
+| GET | `/api/users/{id}` | Get user by ID |
+| GET | `/api/users/username/{username}` | Get user by username |
+| POST | `/api/users` | Create new user |
+| PUT | `/api/users/{id}` | Update user |
+| DELETE | `/api/users/{id}` | Delete user |
+| GET | `/api/users/check-username/{username}` | Check username availability |
+| GET | `/api/users/check-email/{email}` | Check email availability |
+
+### Health Check Endpoints
+
+| Method | Endpoint | Description |
+|--------|----------|-------------|
+| GET | `/api/health` | Application health status |
+| GET | `/api/health/ping` | Simple ping endpoint |
+
+## Database
+
+The application uses H2 in-memory database for development:
+
+- **URL**: `jdbc:h2:mem:testdb`
+- **Username**: `sa`
+- **Password**: `password`
+- **Console**: `http://localhost:8080/h2-console`
+
+## Project Structure
+
+```
+src/
+├── main/
+│   ├── java/com/vibing/backend/
+│   │   ├── VibingBackendApplication.java    # Main application class
+│   │   ├── controller/                      # REST controllers
+│   │   │   ├── UserController.java
+│   │   │   └── HealthController.java
+│   │   ├── service/                         # Business logic
+│   │   │   └── UserService.java
+│   │   ├── repository/                      # Data access layer
+│   │   │   └── UserRepository.java
+│   │   ├── model/                           # Entity classes
+│   │   │   └── User.java
+│   │   ├── config/                          # Configuration classes
+│   │   │   └── SecurityConfig.java
+│   │   └── exception/                       # Custom exceptions
+│   └── resources/
+│       └── application.yml                  # Application configuration
+└── test/
+    └── java/com/vibing/backend/
+        └── VibingBackendApplicationTests.java
+```
+
+## Configuration
+
+The application configuration is in `src/main/resources/application.yml`:
+
+- **Server Port**: 8080
+- **Context Path**: `/api`
+- **Database**: H2 in-memory
+- **JPA**: Hibernate with create-drop DDL
+- **Security**: Basic configuration (allows all user endpoints)
+
+## Development
+
+### Running Tests
+
+```bash
+mvn test
+```
+
+### Building JAR
+
+```bash
+mvn clean package
+```
+
+The JAR file will be created in the `target/` directory.
+
+### Running JAR
+
+```bash
+java -jar target/vibing-backend-1.0.0.jar
+```
+
+## API Documentation
+
+Once the application is running, you can access:
+
+- **Swagger UI**: `http://localhost:8080/swagger-ui.html`
+- **OpenAPI JSON**: `http://localhost:8080/api-docs`
+
+## Example API Usage
+
+### Create a User
+
+```bash
+curl -X POST http://localhost:8080/api/users \
+  -H "Content-Type: application/json" \
+  -d '{
+    "username": "john_doe",
+    "email": "john@example.com",
+    "password": "password123",
+    "firstName": "John",
+    "lastName": "Doe"
+  }'
+```
+
+### Get All Users
+
+```bash
+curl http://localhost:8080/api/users
+```
+
+### Get User by ID
+
+```bash
+curl http://localhost:8080/api/users/1
+```
+
+## Security
+
+The current security configuration allows all requests to user endpoints for development purposes. For production:
+
+1. Implement proper authentication (JWT, OAuth2, etc.)
+2. Add role-based authorization
+3. Configure CORS properly
+4. Use HTTPS
+5. Implement rate limiting
+
+## Contributing
+
+1. Create a feature branch
+2. Make your changes
+3. Add tests
+4. Submit a pull request
+
+## License
+
+This project is licensed under the MIT License. 

backend/pom.xml

@@ -0,0 +1,135 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
+         http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.2.0</version>
+        <relativePath/>
+    </parent>
+
+    <groupId>com.vibing</groupId>
+    <artifactId>vibing-backend</artifactId>
+    <version>1.0.0</version>
+    <name>Vibing Backend</name>
+    <description>REST API backend service for Vibing application</description>
+
+    <properties>
+        <java.version>21</java.version>
+        <maven.compiler.source>21</maven.compiler.source>
+        <maven.compiler.target>21</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <!-- Spring Boot Starters -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
+        
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-security</artifactId>
+        </dependency>
+
+        <!-- Database -->
+        <dependency>
+            <groupId>org.postgresql</groupId>
+            <artifactId>postgresql</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+
+        <!-- Development Tools -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-devtools</artifactId>
+            <scope>runtime</scope>
+            <optional>true</optional>
+        </dependency>
+
+        <!-- Test Dependencies -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+        
+        <dependency>
+            <groupId>org.springframework.security</groupId>
+            <artifactId>spring-security-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <!-- JSON Processing -->
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+        </dependency>
+
+        <!-- Lombok -->
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.38</version>
+            <scope>provided</scope>
+        </dependency>
+
+        <!-- API Documentation -->
+        <dependency>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
+            <version>2.2.0</version>
+        </dependency>
+
+        <!-- Flyway -->
+        <dependency>
+            <groupId>org.flywaydb</groupId>
+            <artifactId>flyway-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.flywaydb</groupId>
+            <artifactId>flyway-database-postgresql</artifactId>
+            <version>11.10.5</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+            
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.11.0</version>
+                <configuration>
+                    <source>21</source>
+                    <target>21</target>
+                </configuration>
+            </plugin>
+            
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>3.1.2</version>
+            </plugin>
+        </plugins>
+    </build>
+</project> 

backend/run.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+
+# Vibing Backend Run Script
+echo "Starting Vibing Backend..."
+
+# Check if Java 21 is available
+if ! command -v java &> /dev/null; then
+    echo "Error: Java is not installed or not in PATH"
+    exit 1
+fi
+
+# Check Java version
+JAVA_VERSION=$(java -version 2>&1 | head -n 1 | cut -d'"' -f2 | cut -d'.' -f1)
+if [ "$JAVA_VERSION" != "21" ]; then
+    echo "Warning: Java 21 is recommended. Current version: $JAVA_VERSION"
+fi
+
+# Check if Maven is available
+if ! command -v mvn &> /dev/null; then
+    echo "Error: Maven is not installed or not in PATH"
+    exit 1
+fi
+
+echo "Building and running the application..."
+echo "The application will be available at:"
+echo "  - API Base: http://localhost:8080/api"
+echo "  - Health Check: http://localhost:8080/api/health"
+echo "  - Swagger UI: http://localhost:8080/swagger-ui.html"
+echo "  - H2 Console: http://localhost:8080/h2-console"
+echo ""
+echo "Press Ctrl+C to stop the application"
+echo ""
+
+# Run the application
+mvn spring-boot:run 

backend/src/main/java/com/vibing/backend/VibingBackendApplication.java

@@ -0,0 +1,16 @@
+package com.vibing.backend;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * Main Spring Boot application class for the Vibing backend service.
+ * This class serves as the entry point for the REST API backend.
+ */
+@SpringBootApplication
+public class VibingBackendApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(VibingBackendApplication.class, args);
+    }
+} 

backend/src/main/java/com/vibing/backend/config/SecurityConfig.java

@@ -0,0 +1,35 @@
+package com.vibing.backend.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
+import org.springframework.security.web.SecurityFilterChain;
+
+/**
+ * Security configuration for the Vibing backend application.
+ * This is a basic configuration that can be extended for production use.
+ */
+@Configuration
+@EnableWebSecurity
+public class SecurityConfig {
+
+    /**
+     * Configure security filter chain.
+     * For development purposes, this allows all requests.
+     * In production, you should implement proper authentication and authorization.
+     *
+     * @param http the HttpSecurity object
+     * @return SecurityFilterChain
+     * @throws Exception if configuration fails
+     */
+    @Bean
+    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
+        http
+            .csrf(AbstractHttpConfigurer::disable) // Disable CSRF for REST APIa
+            .authorizeHttpRequests(authz -> authz.anyRequest().permitAll());
+
+        return http.build();
+    }
+} 

backend/src/main/java/com/vibing/backend/controller/ActivityController.java

@@ -0,0 +1,117 @@
+package com.vibing.backend.controller;
+
+import com.vibing.backend.model.Activity;
+import com.vibing.backend.service.ActivityService;
+
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import lombok.AllArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+import java.util.Optional;
+
+/**
+ * REST controller for Activity-related operations.
+ */
+@RestController
+@RequestMapping("/activities")
+@Tag(name = "Activity Management", description = "APIs for managing activities")
+@CrossOrigin(origins = "*") // Configure this properly for production
+@AllArgsConstructor
+public class ActivityController {
+
+    private final ActivityService activityService;
+
+    /**
+     * Get all activities.
+     *
+     * @return ResponseEntity containing list of all activities
+     */
+    @GetMapping
+    @Operation(summary = "Get all activities", description = "Retrieve a list of all activities")
+    public ResponseEntity<List<Activity>> getAllActivities() {
+        List<Activity> activities = activityService.findAll();
+        return ResponseEntity.ok(activities);
+    }
+
+    /**
+     * Get an activity by ID.
+     *
+     * @param id the activity ID
+     * @return ResponseEntity containing the activity if found
+     */
+    @GetMapping("/{id}")
+    @Operation(summary = "Get activity by ID", description = "Retrieve a specific activity by its ID")
+    public ResponseEntity<Activity> getActivityById(@PathVariable Long id) {
+        Optional<Activity> activity = activityService.findById(id);
+        return activity.map(ResponseEntity::ok)
+                .orElse(ResponseEntity.notFound().build());
+    }
+
+    /**
+     * Get activities by name (case-insensitive search).
+     *
+     * @param name the activity name to search for
+     * @return ResponseEntity containing list of matching activities
+     */
+    @GetMapping("/search/name")
+    @Operation(summary = "Search activities by name", description = "Search for activities by name (case-insensitive)")
+    public ResponseEntity<List<Activity>> getActivitiesByName(@RequestParam String name) {
+        List<Activity> activities = activityService.findByNameContainingIgnoreCase(name);
+        return ResponseEntity.ok(activities);
+    }
+
+    /**
+     * Get activities by price range.
+     *
+     * @param priceRange the price range to filter by
+     * @return ResponseEntity containing list of activities with the specified price range
+     */
+    @GetMapping("/search/price-range")
+    @Operation(summary = "Get activities by price range", description = "Retrieve activities with a specific price range")
+    public ResponseEntity<List<Activity>> getActivitiesByPriceRange(@RequestParam Integer priceRange) {
+        List<Activity> activities = activityService.findByPriceRange(priceRange);
+        return ResponseEntity.ok(activities);
+    }
+
+    /**
+     * Get activities by location.
+     *
+     * @param locationId the location ID to filter by
+     * @return ResponseEntity containing list of activities at the specified location
+     */
+    @GetMapping("/search/location")
+    @Operation(summary = "Get activities by location", description = "Retrieve activities at a specific location")
+    public ResponseEntity<List<Activity>> getActivitiesByLocation(@RequestParam Long locationId) {
+        List<Activity> activities = activityService.findByLocationId(locationId);
+        return ResponseEntity.ok(activities);
+    }
+
+    /**
+     * Get activities by tag.
+     *
+     * @param tag the tag to search for
+     * @return ResponseEntity containing list of activities with the specified tag
+     */
+    @GetMapping("/search/tag")
+    @Operation(summary = "Get activities by tag", description = "Retrieve activities that have a specific tag")
+    public ResponseEntity<List<Activity>> getActivitiesByTag(@RequestParam String tag) {
+        List<Activity> activities = activityService.findByTagsContaining(tag);
+        return ResponseEntity.ok(activities);
+    }
+
+    /**
+     * Get activities by maximum price range.
+     *
+     * @param maxPriceRange the maximum price range
+     * @return ResponseEntity containing list of activities with price range <= maxPriceRange
+     */
+    @GetMapping("/search/max-price")
+    @Operation(summary = "Get activities by maximum price range", description = "Retrieve activities with price range less than or equal to the specified value")
+    public ResponseEntity<List<Activity>> getActivitiesByMaxPriceRange(@RequestParam Integer maxPriceRange) {
+        List<Activity> activities = activityService.findByPriceRangeLessThanEqual(maxPriceRange);
+        return ResponseEntity.ok(activities);
+    }
+} 

backend/src/main/java/com/vibing/backend/controller/HealthController.java

@@ -0,0 +1,49 @@
+package com.vibing.backend.controller;
+
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.time.LocalDateTime;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Health check controller for monitoring the application status.
+ */
+@RestController
+@RequestMapping("/health")
+@Tag(name = "Health Check", description = "APIs for checking application health")
+public class HealthController {
+
+    /**
+     * Get the health status of the application.
+     *
+     * @return ResponseEntity containing health information
+     */
+    @GetMapping
+    @Operation(summary = "Health check", description = "Check if the application is running")
+    public ResponseEntity<Map<String, Object>> healthCheck() {
+        Map<String, Object> healthInfo = new HashMap<>();
+        healthInfo.put("status", "UP");
+        healthInfo.put("timestamp", LocalDateTime.now());
+        healthInfo.put("service", "Vibing Backend");
+        healthInfo.put("version", "1.0.0");
+        
+        return ResponseEntity.ok(healthInfo);
+    }
+
+    /**
+     * Get a simple ping response.
+     *
+     * @return ResponseEntity with "pong" message
+     */
+    @GetMapping("/ping")
+    @Operation(summary = "Ping", description = "Simple ping endpoint")
+    public ResponseEntity<String> ping() {
+        return ResponseEntity.ok("pong");
+    }
+} 

backend/src/main/java/com/vibing/backend/model/Activity.java

@@ -0,0 +1,67 @@
+package com.vibing.backend.model;
+
+import jakarta.persistence.*;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+import jakarta.validation.constraints.Min;
+import jakarta.validation.constraints.Max;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.AllArgsConstructor;
+import java.time.LocalDateTime;
+import java.util.List;
+
+/**
+ * Activity entity representing an activity in the Vibing application.
+ */
+@Entity
+@Table(name = "activities")
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class Activity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @NotBlank(message = "Activity name is required")
+    @Column(nullable = false)
+    private String name;
+
+    @NotNull(message = "Location is required")
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "location_id", nullable = false)
+    private Location location;
+
+    @NotNull(message = "Price range is required")
+    @Min(value = 1, message = "Price range must be at least 1")
+    @Max(value = 5, message = "Price range must be at most 5")
+    @Column(name = "price_range", nullable = false)
+    private Integer priceRange;
+
+    @ElementCollection(fetch = FetchType.LAZY)
+    @CollectionTable(name = "activity_tags", joinColumns = @JoinColumn(name = "activity_id"))
+    @Column(name = "tag")
+    private List<String> tags;
+
+    @Column(name = "description")
+    private String description;
+
+    @Column(name = "created_at")
+    private LocalDateTime createdAt;
+
+    @Column(name = "updated_at")
+    private LocalDateTime updatedAt;
+
+    @PrePersist
+    protected void onCreate() {
+        createdAt = LocalDateTime.now();
+        updatedAt = LocalDateTime.now();
+    }
+
+    @PreUpdate
+    protected void onUpdate() {
+        updatedAt = LocalDateTime.now();
+    }
+} 

backend/src/main/java/com/vibing/backend/model/Location.java

@@ -0,0 +1,62 @@
+package com.vibing.backend.model;
+
+import jakarta.persistence.*;
+import jakarta.validation.constraints.NotBlank;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.AllArgsConstructor;
+import java.time.LocalDateTime;
+
+/**
+ * Location entity representing a location in the Vibing application.
+ */
+@Entity
+@Table(name = "locations")
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class Location {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @NotBlank(message = "Location name is required")
+    @Column(nullable = false)
+    private String name;
+
+    @Column
+    private String address;
+
+    @Column
+    private String city;
+
+    @Column
+    private String country;
+
+    @Column(name = "postal_code")
+    private String postalCode;
+
+    @Column(name = "latitude")
+    private Double latitude;
+
+    @Column(name = "longitude")
+    private Double longitude;
+
+    @Column(name = "created_at")
+    private LocalDateTime createdAt;
+
+    @Column(name = "updated_at")
+    private LocalDateTime updatedAt;
+
+    @PrePersist
+    protected void onCreate() {
+        createdAt = LocalDateTime.now();
+        updatedAt = LocalDateTime.now();
+    }
+
+    @PreUpdate
+    protected void onUpdate() {
+        updatedAt = LocalDateTime.now();
+    }
+} 

backend/src/main/java/com/vibing/backend/repository/ActivityRepository.java

@@ -0,0 +1,54 @@
+package com.vibing.backend.repository;
+
+import com.vibing.backend.model.Activity;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+/**
+ * Repository interface for Activity entity operations.
+ */
+@Repository
+public interface ActivityRepository extends JpaRepository<Activity, Long> {
+
+    /**
+     * Find activities by name (case-insensitive).
+     *
+     * @param name the activity name to search for
+     * @return List of activities matching the name
+     */
+    List<Activity> findByNameContainingIgnoreCase(String name);
+
+    /**
+     * Find activities by price range.
+     *
+     * @param priceRange the price range to search for
+     * @return List of activities with the specified price range
+     */
+    List<Activity> findByPriceRange(Integer priceRange);
+
+    /**
+     * Find activities by location.
+     *
+     * @param locationId the location ID to search for
+     * @return List of activities at the specified location
+     */
+    List<Activity> findByLocationId(Long locationId);
+
+    /**
+     * Find activities by tag.
+     *
+     * @param tag the tag to search for
+     * @return List of activities with the specified tag
+     */
+    List<Activity> findByTagsContaining(String tag);
+
+    /**
+     * Find activities by price range less than or equal to.
+     *
+     * @param maxPriceRange the maximum price range
+     * @return List of activities with price range <= maxPriceRange
+     */
+    List<Activity> findByPriceRangeLessThanEqual(Integer maxPriceRange);
+} 

backend/src/main/java/com/vibing/backend/service/ActivityService.java

@@ -0,0 +1,49 @@
+package com.vibing.backend.service;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.stereotype.Service;
+
+import com.vibing.backend.model.Activity;
+import com.vibing.backend.repository.ActivityRepository;
+
+import lombok.AllArgsConstructor;
+
+/**
+ * Service class for managing activities.
+ */
+@Service
+@AllArgsConstructor
+public class ActivityService {
+
+    private final ActivityRepository activityRepository;
+
+    public List<Activity> findAll() {
+        return activityRepository.findAll();
+    }
+
+    public Optional<Activity> findById(Long id) {
+        return activityRepository.findById(id);
+    }
+
+    public List<Activity> findByNameContainingIgnoreCase(String name) {
+        return activityRepository.findByNameContainingIgnoreCase(name);
+    }
+
+    public List<Activity> findByPriceRange(Integer priceRange) {
+        return activityRepository.findByPriceRange(priceRange);
+    }
+
+    public List<Activity> findByTagsContaining(String tag) {
+        return activityRepository.findByTagsContaining(tag);
+    }
+
+    public List<Activity> findByLocationId(Long locationId) {
+        return activityRepository.findByLocationId(locationId);
+    }
+
+    public List<Activity> findByPriceRangeLessThanEqual(Integer maxPriceRange) {
+        return activityRepository.findByPriceRangeLessThanEqual(maxPriceRange);
+    }
+}

backend/src/main/resources/application.yml

@@ -0,0 +1,56 @@
+server:
+  port: 8080
+  servlet:
+    context-path: /api
+
+spring:
+  application:
+    name: vibing-backend
+  
+  # Database Configuration
+  datasource:
+    url: jdbc:postgresql://localhost:5432/vibing
+    username: vibing
+    password: vibing
+    driver-class-name: org.postgresql.Driver
+  
+  # JPA Configuration
+  jpa:
+    database-platform: org.hibernate.dialect.PostgreSQLDialect
+    hibernate:
+      ddl-auto: update
+    show-sql: true
+    properties:
+      hibernate:
+        format_sql: true
+  
+  # Jackson Configuration
+  jackson:
+    default-property-inclusion: non_null
+    serialization:
+      write-dates-as-timestamps: false
+    deserialization:
+      fail-on-unknown-properties: false
+
+# Logging Configuration
+logging:
+  level:
+    com.vibing.backend: DEBUG
+    org.springframework.security: DEBUG
+    org.springframework.web: DEBUG
+  pattern:
+    console: "%d{yyyy-MM-dd HH:mm:ss} - %msg%n"
+
+# API Documentation
+springdoc:
+  api-docs:
+    path: /api-docs
+  swagger-ui:
+    path: /swagger-ui.html
+    operations-sorter: method
+
+# Security Configuration
+security:
+  jwt:
+    secret: your-secret-key-here-change-in-production
+    expiration: 86400000 # 24 hours in milliseconds 

backend/src/main/resources/db/migration/V1__initial_schema.sql

@@ -0,0 +1,36 @@
+CREATE SCHEMA IF NOT EXISTS vibing;
+
+CREATE TABLE IF NOT EXISTS vibing.activities (
+    id SERIAL PRIMARY KEY,
+    name TEXT NOT NULL,
+    description TEXT,
+    price_range INT NOT NULL,
+    location_id INT NOT NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT fk_location
+        FOREIGN KEY(location_id) 
+        REFERENCES vibing.locations(id)
+        ON DELETE CASCADE
+);
+
+CREATE TABLE IF NOT EXISTS vibing.activity_tags (
+    activity_id INT NOT NULL,
+    tag TEXT NOT NULL,
+    FOREIGN KEY (activity_id) REFERENCES vibing.activities(id) ON DELETE CASCADE,
+    PRIMARY KEY (activity_id, tag)
+);
+
+CREATE TABLE IF NOT EXISTS vibing.locations (
+    id SERIAL PRIMARY KEY,
+    name TEXT NOT NULL,
+    address TEXT,
+    city TEXT,
+    country TEXT,
+    postal_code TEXT,
+    latitude DOUBLE PRECISION,
+    longitude DOUBLE PRECISION,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+

backend/src/test/java/com/vibing/backend/VibingBackendApplicationTests.java

@@ -0,0 +1,16 @@
+package com.vibing.backend;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+/**
+ * Basic test class for the Vibing Backend application.
+ */
+@SpringBootTest
+class VibingBackendApplicationTests {
+
+    @Test
+    void contextLoads() {
+        // This test verifies that the Spring application context loads successfully
+    }
+} 

backend/src/test/resources/application-test.yml

@@ -0,0 +1,10 @@
+spring:
+  datasource:
+    url: jdbc:postgresql://localhost:5432/your_test_database
+    username: test_user
+    password: test_password
+  
+  flyway:
+    enabled: true
+    clean-disabled: false  # Allow clean in tests
+    locations: classpath:db/migration

local-dev/compose.yml

@@ -0,0 +1,11 @@
+services:
+  postgres:
+    image: postgres:15
+    ports:
+      - 5432:5432
+    environment:
+      POSTGRES_USER: vibing
+      POSTGRES_PASSWORD: vibing
+      POSTGRES_DB: vibing
+    volumes:
+      - postgres_data:/var/lib/postgresql/data