Repository: storkforge/Barkr
Pull request #3: Setup
Author: login: kirre02
Labels: name: enhancement
description: New feature or request
Created: 2025-03-26T13:36:39Z | Merged: 2025-03-28T14:25:15Z

Creates user and post entities, repositories and services

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit

- **New Features**
	- Launched support for managing posts and user accounts, enabling enhanced content interactions and data integrity.
	- Integrated validation capabilities to improve input handling.

- **Chores**
	- Updated database configuration with revised environment settings and port mapping.
	- Refined application properties for enhanced SQL logging and message localization.
	- Introduced new database tables for posts and accounts, ensuring data integrity through constraints.
	- Added sample data initialization on application startup to enhance user experience.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->


Diff:
diff --git a/compose.yaml b/compose.yaml
index 7c8044f..e0f6800 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -2,8 +2,8 @@ services:
   postgres:
     image: 'postgres:latest'
     environment:
-      - 'POSTGRES_DB=mydatabase'
-      - 'POSTGRES_PASSWORD=secret'
-      - 'POSTGRES_USER=myuser'
+      - 'POSTGRES_DB=barkrdb'
+      - 'POSTGRES_PASSWORD=woof'
+      - 'POSTGRES_USER=doggo'
     ports:
-      - '5432'
+      - '5432:5432'
diff --git a/pom.xml b/pom.xml
index 6d6c2bf..2bf6eee 100644
--- a/pom.xml
+++ b/pom.xml
@@ -72,6 +72,10 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-thymeleaf</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
+        </dependency>
     </dependencies>
 
     <build>
diff --git a/src/main/java/org/storkforge/barkr/config/Config.java b/src/main/java/org/storkforge/barkr/config/Config.java
new file mode 100644
index 0000000..4267175
--- /dev/null
+++ b/src/main/java/org/storkforge/barkr/config/Config.java
@@ -0,0 +1,59 @@
+package org.storkforge.barkr.config;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Profile;
+import org.storkforge.barkr.domain.entity.Account;
+import org.storkforge.barkr.domain.entity.Post;
+import org.storkforge.barkr.infrastructure.persistence.AccountRepository;
+import org.storkforge.barkr.infrastructure.persistence.PostRepository;
+
+import java.util.List;
+
+@Configuration
+@Profile("!test")
+public class Config {
+  private final Logger log = LoggerFactory.getLogger(Config.class);
+
+  @Bean
+  CommandLineRunner accountInit(AccountRepository accountRepository, PostRepository postRepository) {
+    return _ -> {
+      if (accountRepository.count() == 0 && postRepository.count() == 0) {
+        log.info("Database is empty. Starting seeding process...");
+
+        log.info("Seeding users/accounts into the database...");
+        Account accountOne = new Account();
+        accountOne.setUsername("Bella Pawkins");
+
+        Account accountTwo = new Account();
+        accountTwo.setUsername("Charlie Barkson");
+
+        Account accountThree = new Account();
+        accountThree.setUsername("Max Woofington");
+
+        accountRepository.saveAll(List.of(accountOne, accountTwo, accountThree));
+
+        log.info("Seeding posts... (requires users to exist first)");
+        Post postOne = new Post();
+        postOne.setContent("Just chased my tail for 10 minutes straight. New personal record! #TailChaser #DogLife");
+        postOne.setAccount(accountOne);
+
+        Post postTwo = new Post();
+        postTwo.setContent("Got a new toy today! It squeaks and everything. Best. Day. Ever. #NewToy #HappyPup");
+        postTwo.setAccount(accountTwo);
+
+        Post postThree = new Post();
+        postThree.setContent("Beach day with my humans! The waves were a bit scary but I was brave and fetched the ball from the water. Who else loves swimming?");
+        postThree.setAccount(accountThree);
+
+        postRepository.saveAll(List.of(postOne, postTwo, postThree));
+        log.info("Database seeding completed successfully.");
+      } else {
+        log.info("Database already contains data. Skipping seed process to prevent duplicates.");
+      }
+    };
+  }
+}
diff --git a/src/main/java/org/storkforge/barkr/domain/AccountService.java b/src/main/java/org/storkforge/barkr/domain/AccountService.java
new file mode 100644
index 0000000..020609e
--- /dev/null
+++ b/src/main/java/org/storkforge/barkr/domain/AccountService.java
@@ -0,0 +1,28 @@
+package org.storkforge.barkr.domain;
+
+import jakarta.transaction.Transactional;
+import org.slf4j.LoggerFactory;
+import org.slf4j.Logger;
+import org.springframework.stereotype.Service;
+import org.storkforge.barkr.domain.entity.Account;
+import org.storkforge.barkr.infrastructure.persistence.AccountRepository;
+
+import java.util.List;
+
+@Service
+@Transactional
+public class AccountService {
+    private final Logger log = LoggerFactory.getLogger(AccountService.class);
+
+    private final AccountRepository accountRepository;
+
+    public AccountService(AccountRepository accountRepository) {
+        this.accountRepository = accountRepository;
+    }
+
+    public List<Account> findAll() {
+        log.info("Finding all accounts");
+        return accountRepository.findAll();
+    }
+
+}
diff --git a/src/main/java/org/storkforge/barkr/domain/PostService.java b/src/main/java/org/storkforge/barkr/domain/PostService.java
new file mode 100644
index 0000000..e5b476e
--- /dev/null
+++ b/src/main/java/org/storkforge/barkr/domain/PostService.java
@@ -0,0 +1,27 @@
+package org.storkforge.barkr.domain;
+
+import jakarta.transaction.Transactional;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
+import org.storkforge.barkr.domain.entity.Post;
+import org.storkforge.barkr.infrastructure.persistence.PostRepository;
+import java.util.List;
+
+@Service
+@Transactional
+public class PostService {
+
+    private final Logger log = LoggerFactory.getLogger(PostService.class);
+
+    private final PostRepository postRepository;
+
+    public PostService(PostRepository postRepository) {
+        this.postRepository = postRepository;
+    }
+
+    public List<Post> findAll() {
+        log.info("Finding all posts");
+        return postRepository.findAll();
+    }
+}
diff --git a/src/main/java/org/storkforge/barkr/domain/entity/Account.java b/src/main/java/org/storkforge/barkr/domain/entity/Account.java
new file mode 100644
index 0000000..d2fd04d
--- /dev/null
+++ b/src/main/java/org/storkforge/barkr/domain/entity/Account.java
@@ -0,0 +1,92 @@
+package org.storkforge.barkr.domain.entity;
+
+import jakarta.persistence.*;
+import jakarta.validation.constraints.*;
+import org.hibernate.proxy.HibernateProxy;
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+@Entity
+public class Account {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "account_id")
+    private Long id;
+
+    @NotBlank
+    @Column(unique = true, nullable = false)
+    private String username;
+
+    @PastOrPresent
+    @Column(nullable = false, updatable = false)
+    private LocalDateTime createdAt;
+
+  @OneToMany(mappedBy = "account", cascade = CascadeType.ALL, orphanRemoval = true, fetch = FetchType.LAZY)
+  private List<Post> posts = new ArrayList<>();
+
+    @PrePersist
+    protected void onCreate() {
+        if (createdAt == null) createdAt = LocalDateTime.now();
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+
+  public void addPost(Post post) {
+    posts.add(post);
+    post.setAccount(this);
+  }
+
+  public void removePost(Post post) {
+    posts.remove(post);
+  }
+
+    @Override
+    public final boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null) return false;
+        Class<?> oEffectiveClass = o instanceof HibernateProxy ? ((HibernateProxy) o).getHibernateLazyInitializer().getPersistentClass() : o.getClass();
+        Class<?> thisEffectiveClass = this instanceof HibernateProxy ? ((HibernateProxy) this).getHibernateLazyInitializer().getPersistentClass() : this.getClass();
+        if (thisEffectiveClass != oEffectiveClass) return false;
+        Account account = (Account) o;
+        return getId() != null && Objects.equals(getId(), account.getId());
+    }
+
+    @Override
+    public final int hashCode() {
+        return this instanceof HibernateProxy ? ((HibernateProxy) this).getHibernateLazyInitializer().getPersistentClass().hashCode() : getClass().hashCode();
+    }
+
+    @Override
+    public String toString() {
+        return getClass().getSimpleName() + "(" +
+                "id = " + id + ", " +
+                "username = " + username + ", " +
+                "created_at = " + createdAt + ")";
+    }
+}
diff --git a/src/main/java/org/storkforge/barkr/domain/entity/Post.java b/src/main/java/org/storkforge/barkr/domain/entity/Post.java
new file mode 100644
index 0000000..d4dab46
--- /dev/null
+++ b/src/main/java/org/storkforge/barkr/domain/entity/Post.java
@@ -0,0 +1,91 @@
+package org.storkforge.barkr.domain.entity;
+
+import jakarta.persistence.*;
+import jakarta.validation.constraints.*;
+import org.hibernate.proxy.HibernateProxy;
+
+import java.time.LocalDateTime;
+import java.util.Objects;
+
+
+@Entity
+public class Post {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @NotBlank
+    @Size(min = 1, max = 255)
+    @Column(nullable = false)
+    private String content;
+
+    @ManyToOne(fetch = FetchType.LAZY, optional = false)
+    @JoinColumn(name = "account_id", nullable = false)
+    private Account account;
+
+    @PastOrPresent
+    @Column(nullable = false, updatable = false)
+    private LocalDateTime createdAt;
+
+    @PrePersist
+    protected void onCreate() {
+        if (createdAt == null) createdAt = LocalDateTime.now();
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+
+    public Account getAccount() {
+        return account;
+    }
+
+    public void setAccount(Account account) {
+        this.account = account;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    @Override
+    public final boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null) return false;
+        Class<?> oEffectiveClass = o instanceof HibernateProxy ? ((HibernateProxy) o).getHibernateLazyInitializer().getPersistentClass() : o.getClass();
+        Class<?> thisEffectiveClass = this instanceof HibernateProxy ? ((HibernateProxy) this).getHibernateLazyInitializer().getPersistentClass() : this.getClass();
+        if (thisEffectiveClass != oEffectiveClass) return false;
+        Post post = (Post) o;
+        return getId() != null && Objects.equals(getId(), post.getId());
+    }
+
+    @Override
+    public final int hashCode() {
+        return this instanceof HibernateProxy ? ((HibernateProxy) this).getHibernateLazyInitializer().getPersistentClass().hashCode() : getClass().hashCode();
+    }
+
+    @Override
+    public String toString() {
+        return getClass().getSimpleName() + "(" +
+                "id = " + id + ", " +
+                "content = " + content + ", " +
+                "created_at = " + createdAt + ")";
+    }
+}
diff --git a/src/main/java/org/storkforge/barkr/infrastructure/persistence/AccountRepository.java b/src/main/java/org/storkforge/barkr/infrastructure/persistence/AccountRepository.java
new file mode 100644
index 0000000..85c3443
--- /dev/null
+++ b/src/main/java/org/storkforge/barkr/infrastructure/persistence/AccountRepository.java
@@ -0,0 +1,6 @@
+package org.storkforge.barkr.infrastructure.persistence;
+
+import org.springframework.data.repository.ListCrudRepository;
+import org.storkforge.barkr.domain.entity.Account;
+
+public interface AccountRepository extends ListCrudRepository<Account, Long> { }
diff --git a/src/main/java/org/storkforge/barkr/infrastructure/persistence/PostRepository.java b/src/main/java/org/storkforge/barkr/infrastructure/persistence/PostRepository.java
new file mode 100644
index 0000000..9aa1c48
--- /dev/null
+++ b/src/main/java/org/storkforge/barkr/infrastructure/persistence/PostRepository.java
@@ -0,0 +1,6 @@
+package org.storkforge.barkr.infrastructure.persistence;
+
+import org.springframework.data.repository.ListCrudRepository;
+import org.storkforge.barkr.domain.entity.Post;
+
+public interface PostRepository extends ListCrudRepository<Post, Long> { }
diff --git a/src/main/resources/application-dev.properties b/src/main/resources/application-dev.properties
new file mode 100644
index 0000000..1df83db
--- /dev/null
+++ b/src/main/resources/application-dev.properties
@@ -0,0 +1,3 @@
+spring.docker.compose.lifecycle-management=start_only
+spring.jpa.show-sql=true
+spring.jpa.properties.hibernate.format_sql=true
\ No newline at end of file
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
index b9f3772..0112db6 100644
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -1,3 +1,3 @@
 spring.application.name=barkr
-spring.docker.compose.lifecycle-management=start_only
+spring.messages.fallback-to-system-locale=false
 server.error.include-stacktrace=never
\ No newline at end of file
diff --git a/src/main/resources/db/migration/V1__add_post_and_account.sql b/src/main/resources/db/migration/V1__add_post_and_account.sql
new file mode 100644
index 0000000..5ed5f5f
--- /dev/null
+++ b/src/main/resources/db/migration/V1__add_post_and_account.sql
@@ -0,0 +1,22 @@
+CREATE TABLE post
+(
+    id         BIGINT GENERATED BY DEFAULT AS IDENTITY               NOT NULL,
+    content    VARCHAR(255)                                          NOT NULL,
+    account_id    BIGINT                                                NOT NULL,
+    created_at TIMESTAMP WITHOUT TIME ZONE DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    CONSTRAINT pk_post PRIMARY KEY (id)
+);
+
+CREATE TABLE account
+(
+    account_id    BIGINT GENERATED BY DEFAULT AS IDENTITY               NOT NULL,
+    username   VARCHAR(255)                                          NOT NULL,
+    created_at TIMESTAMP WITHOUT TIME ZONE DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    CONSTRAINT pk_account PRIMARY KEY (account_id)
+);
+
+ALTER TABLE account
+    ADD CONSTRAINT uc_account_username UNIQUE (username);
+
+ALTER TABLE post
+    ADD CONSTRAINT FK_POST_ON_ACCOUNT FOREIGN KEY (account_id) REFERENCES account (account_id);


Reviews:
user: login: coderabbitai[bot]
body: **Actionable comments posted: 3**

<details>
<summary>🧹 Nitpick comments (16)</summary><blockquote>

<details>
<summary>src/main/java/org/storkforge/barkr/infrastructure/persistence/UserRepository.java (1)</summary><blockquote>

`1-6`: **Good implementation, consider adding a common query method for username lookup.**

The repository interface correctly extends ListCrudRepository for basic CRUD operations on User entities. However, most user-centric applications require username lookups.


Consider adding a finder method for retrieving users by username:

```diff
public interface UserRepository extends ListCrudRepository<User, Long> { 
+    User findByUsername(String username);
}
```

</blockquote></details>
<details>
<summary>src/main/java/org/storkforge/barkr/infrastructure/persistence/PostRepository.java (1)</summary><blockquote>

`1-6`: **Repository implementation is correct, consider adding user-related query methods.**

The basic repository implementation is good for CRUD operations, but typical social applications need to fetch posts by user.


Consider adding methods for common post retrieval patterns:

```diff
public interface PostRepository extends ListCrudRepository<Post, Long> { 
+    List<Post> findByUserId(Long userId);
+    List<Post> findByUserIdOrderByCreatedAtDesc(Long userId);
}
```

</blockquote></details>
<details>
<summary>src/main/java/org/storkforge/barkr/domain/UserService.java (2)</summary><blockquote>

`15-15`: **Consider making the logger final and private**

The logger should typically be declared as private and final since it's a constant.


```diff
-    Logger log = LoggerFactory.getLogger(UserService.class);
+    private final Logger log = LoggerFactory.getLogger(UserService.class);
```

---

`23-26`: **Simple findAll implementation looks good**

The method correctly logs the operation and returns the repository result. Consider adding more methods for CRUD operations as needed.



You might want to expand this service with additional methods like:
```java
public Optional<User> findById(Long id) {
    log.info("Finding user with id: {}", id);
    return userRepository.findById(id);
}

public User save(User user) {
    log.info("Saving user: {}", user.getUsername());
    return userRepository.save(user);
}
```

</blockquote></details>
<details>
<summary>src/main/java/org/storkforge/barkr/domain/PostService.java (2)</summary><blockquote>

`15-15`: **Consider making the logger final and private**

The logger should typically be declared as private and final since it's a constant.


```diff
-    Logger log = LoggerFactory.getLogger(UserService.class);
+    private final Logger log = LoggerFactory.getLogger(PostService.class);
```

---

`23-26`: **Simple findAll implementation looks good**

The method correctly logs the operation and returns the repository result. Consider adding more methods for CRUD operations similar to the UserService.



You might want to expand this service with additional methods like:
```java
public Optional<Post> findById(Long id) {
    log.info("Finding post with id: {}", id);
    return postRepository.findById(id);
}

public Post save(Post post) {
    log.info("Saving post for user: {}", post.getUser().getUsername());
    return postRepository.save(post);
}
```

</blockquote></details>
<details>
<summary>src/main/resources/application-dev.properties (1)</summary><blockquote>

`1-3`: **Development properties look good**

These properties provide a good development configuration:
- Setting Docker compose to only start containers is appropriate for development
- Enabling SQL logging and formatting helps with debugging during development

Consider adding a comment at the top of the file to explain its purpose.



```diff
+# Configuration for development environment
 spring.docker.compose.lifecycle-management=start_only
 spring.jpa.show-sql=true
 spring.jpa.properties.hibernate.format_sql=true
```

</blockquote></details>
<details>
<summary>compose.yaml (1)</summary><blockquote>

`5-7`: **Database credentials should not be hardcoded**

While this works for local development, hardcoded database credentials in the compose file could be a security risk if used in other environments.


Consider using environment variables or a .env file:

```diff
-      - 'POSTGRES_DB=barkrdb'
-      - 'POSTGRES_PASSWORD=woof'
-      - 'POSTGRES_USER=doggo'
+      - 'POSTGRES_DB=${POSTGRES_DB:-barkrdb}'
+      - 'POSTGRES_PASSWORD=${POSTGRES_PASSWORD:-woof}'
+      - 'POSTGRES_USER=${POSTGRES_USER:-doggo}'
```

Then create a .env file (which should be git-ignored) for local development.

</blockquote></details>
<details>
<summary>src/main/resources/db/migration/V1__add_post_and_user.sql (2)</summary><blockquote>

`10-10`: **Consider renaming the `user` table to avoid SQL reserved keyword issues.**

Using `user` as a table name requires quoting it in all SQL statements because it's a reserved keyword in PostgreSQL. Consider using a name like `app_user` or `barkr_user` to avoid potential issues.


Consider applying the following changes throughout the migration script:

```diff
-CREATE TABLE "user"
+CREATE TABLE app_user
...
-    CONSTRAINT pk_user PRIMARY KEY (user_id)
+    CONSTRAINT pk_app_user PRIMARY KEY (user_id)
...
-ALTER TABLE "user"
+ALTER TABLE app_user
...
-    ADD CONSTRAINT FK_POST_ON_USER FOREIGN KEY (user_id) REFERENCES "user" (user_id);
+    ADD CONSTRAINT FK_POST_ON_USER FOREIGN KEY (user_id) REFERENCES app_user (user_id);
```

Remember to update the entity classes to reflect this change by adding `@Table(name = "app_user")` to the `User` class.

---

`6-6`: **Consider adding NOT NULL constraints to `created_at` columns.**

The `created_at` columns in both tables are currently nullable. If your application logic expects these timestamps to always be present, consider making them NOT NULL and potentially setting a default value.


Consider applying the following changes:

```diff
-    created_at TIMESTAMP WITHOUT TIME ZONE,
+    created_at TIMESTAMP WITHOUT TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
```

This change would ensure that created_at is always set, even if not explicitly provided by the application code.


Also applies to: 14-14

</blockquote></details>
<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/User.java (3)</summary><blockquote>

`25-25`: **Use camelCase for field names following Java conventions.**

The field `created_at` uses snake_case naming, which is inconsistent with Java conventions. Consider using camelCase for better consistency and adherence to Java standards.


Apply the following changes:

```diff
-    private LocalDateTime created_at;
+    private LocalDateTime createdAt;
```

Remember to update all references to this field, including getters, setters, and any SQL column mapping if needed.

---

`27-28`: **Add getter and potentially setter methods for the `posts` collection.**

The `posts` field lacks accessor methods, making it impossible to access or modify the list of posts from outside the class. Consider adding at least a getter method for this collection.


Add the following methods to provide access to the posts collection:

```java
public List<Post> getPosts() {
    return posts;
}

// Optional, depending on your requirements
public void setPosts(List<Post> posts) {
    this.posts = posts;
}
```

---

`46-52`: **Rename getter and setter methods for consistency with Java naming conventions.**

The getter and setter for `created_at` use snake_case in their names. They should be renamed to follow Java's camelCase convention for better consistency.


Apply the following changes:

```diff
-    public LocalDateTime getCreated_at() {
+    public LocalDateTime getCreatedAt() {
         return created_at;
     }
 
-    public void setCreated_at(LocalDateTime created_at) {
+    public void setCreatedAt(LocalDateTime created_at) {
         this.created_at = created_at;
     }
```

Remember to update all references to these methods in other classes.

</blockquote></details>
<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/Post.java (3)</summary><blockquote>

`27-27`: **Use camelCase for field names following Java conventions.**

The field `created_at` uses snake_case naming, which is inconsistent with Java conventions. Consider using camelCase for better consistency and adherence to Java standards.


Apply the following changes:

```diff
-    private LocalDateTime created_at;
+    private LocalDateTime createdAt;
```

Remember to update all references to this field, including getters, setters, and any SQL column mapping if needed.

---

`54-60`: **Rename getter and setter methods for consistency with Java naming conventions.**

The getter and setter for `created_at` use snake_case in their names. They should be renamed to follow Java's camelCase convention for better consistency.


Apply the following changes:

```diff
-    public LocalDateTime getCreated_at() {
+    public LocalDateTime getCreatedAt() {
         return created_at;
     }
 
-    public void setCreated_at(LocalDateTime created_at) {
+    public void setCreatedAt(LocalDateTime created_at) {
         this.created_at = created_at;
     }
```

Remember to update all references to these methods in other classes.

---

`11-27`: **Consider adding automatic initialization for `created_at` field.**

The `created_at` field doesn't have a default value, which means it needs to be set explicitly when creating a new entity. Consider adding initialization or using a `@PrePersist` callback to set it automatically.


Add a `@PrePersist` callback method to automatically set the `created_at` field:

```java
@PrePersist
protected void onCreate() {
    if (created_at == null) {
        created_at = LocalDateTime.now();
    }
}
```

This ensures that the timestamp is always set when a new entity is persisted.

</blockquote></details>

</blockquote></details>

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</details>

<details>
<summary>📒 Files selected for processing (11)</summary>

* `compose.yaml` (1 hunks)
* `pom.xml` (1 hunks)
* `src/main/java/org/storkforge/barkr/domain/PostService.java` (1 hunks)
* `src/main/java/org/storkforge/barkr/domain/UserService.java` (1 hunks)
* `src/main/java/org/storkforge/barkr/domain/entity/Post.java` (1 hunks)
* `src/main/java/org/storkforge/barkr/domain/entity/User.java` (1 hunks)
* `src/main/java/org/storkforge/barkr/infrastructure/persistence/PostRepository.java` (1 hunks)
* `src/main/java/org/storkforge/barkr/infrastructure/persistence/UserRepository.java` (1 hunks)
* `src/main/resources/application-dev.properties` (1 hunks)
* `src/main/resources/application.properties` (1 hunks)
* `src/main/resources/db/migration/V1__add_post_and_user.sql` (1 hunks)

</details>

<details>
<summary>🧰 Additional context used</summary>

<details>
<summary>🧬 Code Definitions (3)</summary>

<details>
<summary>src/main/java/org/storkforge/barkr/domain/UserService.java (1)</summary><blockquote>

<details>
<summary>src/main/java/org/storkforge/barkr/domain/PostService.java (1)</summary>

* `Service` (11-27)

</details>

</blockquote></details>
<details>
<summary>src/main/java/org/storkforge/barkr/domain/PostService.java (1)</summary><blockquote>

<details>
<summary>src/main/java/org/storkforge/barkr/domain/UserService.java (1)</summary>

* `Service` (12-28)

</details>

</blockquote></details>
<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/User.java (1)</summary><blockquote>

<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/Post.java (1)</summary>

* `Entity` (11-86)

</details>

</blockquote></details>

</details>

</details>

<details>
<summary>🔇 Additional comments (7)</summary><blockquote>

<details>
<summary>pom.xml (1)</summary>

`75-78`: **Good addition of validation dependency.**

Adding spring-boot-starter-validation is appropriate for this PR as it provides the necessary support for validating User and Post entities.

</details>
<details>
<summary>src/main/resources/application.properties (1)</summary>

`2-2`: **Added message localization property seems unrelated to PR objective.**

While this configuration is valid, it appears unrelated to the PR's stated objective of creating user and post entities.


Could you clarify why this internationalization setting was added in this PR? Consider adding a comment in the properties file to explain its purpose:

```diff
spring.application.name=barkr
- spring.messages.fallback-to-system-locale=false
+ # Don't use system locale as fallback to ensure consistent messages across environments
+ spring.messages.fallback-to-system-locale=false
server.error.include-stacktrace=never
```

</details>
<details>
<summary>src/main/java/org/storkforge/barkr/domain/UserService.java (2)</summary>

`1-14`: **Service structure looks good**

The UserService class is properly structured with appropriate Spring annotations (@Service, @Transactional) and necessary imports.

---

`17-21`: **Dependency injection looks good**

Proper constructor injection is used for the repository dependency, which is marked as final.

</details>
<details>
<summary>src/main/java/org/storkforge/barkr/domain/PostService.java (2)</summary>

`1-13`: **Service structure looks good**

The PostService class is properly structured with appropriate Spring annotations (@Service, @Transactional) and necessary imports.

---

`17-21`: **Dependency injection looks good**

Proper constructor injection is used for the repository dependency, which is marked as final.

</details>
<details>
<summary>compose.yaml (1)</summary>

`9-9`: **Port mapping looks good**

The explicit port mapping '5432:5432' makes it clear which host port maps to the container port.

</details>

</blockquote></details>

</details>

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<details>
<summary>🧹 Nitpick comments (3)</summary><blockquote>

<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/User.java (2)</summary><blockquote>

`12-34`: **Consider additional field constraints and relationship cascade.**  
Your `User` class is well-defined with `@Entity` and related fields. However, you may want to:  
1. Add a maximum length constraint to `username` to prevent excessively long inputs beyond the DB limit (e.g., `@Size(max = 50)` or similar).  
2. Specify cascade or orphan removal options on `@OneToMany` if you wish to cascade user creation/deletion or automatically remove posts when a user is removed.

---

`36-58`: **Remove or restrict setters for ID and createdAt.**  
Because `id` is auto-generated and `createdAt` is non-updatable, setting them manually can be error-prone. Consider removing these setters to align with best practices:

```diff
-    public void setId(Long id) {
-        this.id = id;
-    }

-    public void setCreatedAt(LocalDateTime createdAt) {
-        this.createdAt = createdAt;
-    }
+    // Removed setters to avoid overriding auto-generated values and non-updatable fields
```

</blockquote></details>
<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/Post.java (1)</summary><blockquote>

`36-66`: **Optional: Remove manually settable ID.**  
Similar to the `User` entity, since the `id` is auto-generated, consider removing the setter to prevent manual overrides:

```diff
-    public void setId(Long id) {
-        this.id = id;
-    }
+    // Removed setter to avoid overriding generated IDs
```

</blockquote></details>

</blockquote></details>

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</details>

<details>
<summary>📒 Files selected for processing (5)</summary>

* `src/main/java/org/storkforge/barkr/domain/PostService.java` (1 hunks)
* `src/main/java/org/storkforge/barkr/domain/UserService.java` (1 hunks)
* `src/main/java/org/storkforge/barkr/domain/entity/Post.java` (1 hunks)
* `src/main/java/org/storkforge/barkr/domain/entity/User.java` (1 hunks)
* `src/main/resources/db/migration/V1__add_post_and_user.sql` (1 hunks)

</details>

<details>
<summary>🚧 Files skipped from review as they are similar to previous changes (3)</summary>

* src/main/java/org/storkforge/barkr/domain/UserService.java
* src/main/java/org/storkforge/barkr/domain/PostService.java
* src/main/resources/db/migration/V1__add_post_and_user.sql

</details>

<details>
<summary>🧰 Additional context used</summary>

<details>
<summary>🧬 Code Definitions (2)</summary>

<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/User.java (1)</summary><blockquote>

<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/Post.java (1)</summary>

* `Entity` (11-92)

</details>

</blockquote></details>
<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/Post.java (1)</summary><blockquote>

<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/User.java (1)</summary>

* `Entity` (12-83)

</details>

</blockquote></details>

</details>

</details>

<details>
<summary>🔇 Additional comments (5)</summary><blockquote>

<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/User.java (2)</summary>

`1-11`: **All imports and package declarations are clear.**
No issues spotted in the initial boilerplate.

---

`60-83`: **Equals, hashCode, and toString appear correct.**
Your usage of final and handling of Hibernate proxies here is standard and helps ensure equality is compared by entity identity.

</details>
<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/Post.java (3)</summary>

`1-10`: **Package and import statements look good.**
No issues with the standard JPA, validation, and Hibernate imports.

---

`11-35`: **Entity setup is generally sound.**  
Defining the `Post` class with an `id`, `content`, associated `user`, and `createdAt` covers typical blog/post domain needs. You might consider:  
1. Ensuring 255 characters for content is sufficient or switch to a larger column type if your domain demands it.  
2. Checking if cascade operations are desired for the `@ManyToOne` side, though often cascades are configured on the `@OneToMany` owner side.

---

`68-93`: **Equality, hash, and toString override LGTM.**
Consistently handling Hibernate proxies ensures correct entity equality checks.

</details>

</blockquote></details>

</details>

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<details>
<summary>🧹 Nitpick comments (3)</summary><blockquote>

<details>
<summary>src/main/java/org/storkforge/barkr/domain/AccountService.java (1)</summary><blockquote>

`24-24`: **Consider aligning log message with entity name**

The log message mentions "users" but the entity and service are named "Account". For consistency, consider changing the message to "Finding all accounts".

```diff
-        log.info("Finding all users");
+        log.info("Finding all accounts");
```

</blockquote></details>
<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/Post.java (2)</summary><blockquote>

`14-16`: **Consider explicit column naming for consistency**

While not incorrect, consider adding an explicit column name for the id field to be consistent with the Account entity, which has @Column(name = "account_id").

```diff
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
+   @Column(name = "id")
    private Long id;
```

---

`84-91`: **Potential performance concern in toString method**

Be cautious about including the account field in the toString method, as it might trigger lazy loading of the Account entity. Consider excluding it or using the account's ID instead.

```diff
    public String toString() {
        return getClass().getSimpleName() + "(" +
                "id = " + id + ", " +
                "content = " + content + ", " +
-               "account = " + account + ", " +
+               "account_id = " + (account != null ? account.getId() : null) + ", " +
                "created_at = " + createdAt + ")";
    }
```

</blockquote></details>

</blockquote></details>

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</details>

<details>
<summary>📒 Files selected for processing (5)</summary>

* `src/main/java/org/storkforge/barkr/domain/AccountService.java` (1 hunks)
* `src/main/java/org/storkforge/barkr/domain/entity/Account.java` (1 hunks)
* `src/main/java/org/storkforge/barkr/domain/entity/Post.java` (1 hunks)
* `src/main/java/org/storkforge/barkr/infrastructure/persistence/AccountRepository.java` (1 hunks)
* `src/main/resources/db/migration/V1__add_post_and_account.sql` (1 hunks)

</details>

<details>
<summary>✅ Files skipped from review due to trivial changes (1)</summary>

* src/main/java/org/storkforge/barkr/infrastructure/persistence/AccountRepository.java

</details>

<details>
<summary>🧰 Additional context used</summary>

<details>
<summary>🧬 Code Definitions (2)</summary>

<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/Account.java (1)</summary><blockquote>

<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/Post.java (1)</summary>

* `Entity` (11-92)

</details>

</blockquote></details>
<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/Post.java (1)</summary><blockquote>

<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/Account.java (1)</summary>

* `Entity` (12-83)

</details>

</blockquote></details>

</details>

</details>

<details>
<summary>🔇 Additional comments (8)</summary><blockquote>

<details>
<summary>src/main/java/org/storkforge/barkr/domain/AccountService.java (1)</summary>

`1-28`: **Well-structured service class with dependency injection**

The AccountService class is well-organized with proper annotations, constructor injection, and transaction support. The implementation is clean and follows Spring best practices.

</details>
<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/Account.java (3)</summary>

`12-34`: **Well-designed entity with proper JPA annotations**

The Account entity is well-structured with appropriate annotations for identity, validation, and relationship mapping. The PrePersist lifecycle callback ensures createdAt is always set.

---

`28-29`: **Proper bidirectional relationship setup with Post entity**

The bidirectional relationship with Post is correctly implemented using @OneToMany with mappedBy attribute, which is a best practice. The fetch type is appropriately set to LAZY for performance optimization.

---

`60-74`: **Robust equals implementation for Hibernate entities**

The equals method correctly handles Hibernate proxies, which is essential for proper entity comparison in a JPA context, especially with lazy loading. This implementation follows best practices for JPA entity equality.

</details>
<details>
<summary>src/main/resources/db/migration/V1__add_post_and_account.sql (1)</summary>

`1-22`: **Well-structured database schema with proper constraints**

The migration script creates appropriate tables with correct data types, constraints, and relationships. The unique constraint on username and the foreign key between post and account ensure data integrity.

</details>
<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/Post.java (3)</summary>

`11-34`: **Well-structured entity with proper validation**

The Post entity is well-implemented with appropriate annotations for identity, validation, and relationship mapping. The content field has proper size constraints, and the lifecycle callback ensures createdAt is always populated.

---

`23-25`: **Appropriate relationship configuration**

The ManyToOne relationship with Account is properly configured with lazy loading and a non-nullable constraint, which aligns with the database schema's foreign key. This ensures data integrity at both the database and application levels.

---

`68-77`: **Robust equals implementation for Hibernate entities**

The equals method correctly handles Hibernate proxies, which is essential for proper entity comparison in a JPA context, especially with lazy loading. This is consistent with the implementation in the Account entity.

</details>

</blockquote></details>

</details>

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<details>
<summary>🧹 Nitpick comments (1)</summary><blockquote>

<details>
<summary>src/main/java/org/storkforge/barkr/config/Config.java (1)</summary><blockquote>

`21-58`: **Consider extracting seeding logic to a dedicated service.**

While the current implementation works well, as the application grows, it would be beneficial to extract the database initialization logic to a dedicated service class. This would maintain better separation of concerns and allow for more complex seeding scenarios if needed.


```java
// Example refactoring approach:
@Service
public class DatabaseInitializationService {
    private final Logger log = LoggerFactory.getLogger(DatabaseInitializationService.class);
    private final AccountRepository accountRepository;
    private final PostRepository postRepository;

    public DatabaseInitializationService(AccountRepository accountRepository, PostRepository postRepository) {
        this.accountRepository = accountRepository;
        this.postRepository = postRepository;
    }

    public void initializeDatabase() {
        if (accountRepository.count() == 0 && postRepository.count() == 0) {
            log.info("Database is empty. Starting seeding process...");
            seedAccounts();
            seedPosts();
            log.info("Database seeding completed successfully.");
        } else {
            log.info("Database already contains data. Skipping seed process to prevent duplicates.");
        }
    }

    private void seedAccounts() {
        // Account seeding logic
    }

    private void seedPosts() {
        // Post seeding logic
    }
}

// In Config.java:
@Bean
CommandLineRunner accountInit(DatabaseInitializationService initService) {
    return args -> initService.initializeDatabase();
}
```

</blockquote></details>

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<details>
<summary>📒 Files selected for processing (3)</summary>

* `src/main/java/org/storkforge/barkr/config/Config.java` (1 hunks)
* `src/main/java/org/storkforge/barkr/domain/entity/Account.java` (1 hunks)
* `src/main/java/org/storkforge/barkr/domain/entity/Post.java` (1 hunks)

</details>

<details>
<summary>🚧 Files skipped from review as they are similar to previous changes (1)</summary>

* src/main/java/org/storkforge/barkr/domain/entity/Post.java

</details>

<details>
<summary>🧰 Additional context used</summary>

<details>
<summary>🧬 Code Definitions (1)</summary>

<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/Account.java (1)</summary><blockquote>

<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/Post.java (1)</summary>

* `Entity` (11-91)

</details>

</blockquote></details>

</details>

</details>

<details>
<summary>🔇 Additional comments (13)</summary><blockquote>

<details>
<summary>src/main/java/org/storkforge/barkr/domain/entity/Account.java (9)</summary>

`1-11`: **Appropriate imports for JPA entity implementation.**

The necessary imports for Jakarta persistence, validation constraints, and data structures are correctly included for this entity class implementation.

---

`12-19`: **Well-structured entity class with appropriate table definition.**

The Account entity is properly annotated with @Entity and includes a properly defined ID field with appropriate generation strategy. The explicit naming of the ID column as "account_id" is a good practice for clarity in database schema.

---

`20-22`: **Username uniqueness constraint is correctly implemented.**

The username field is properly constrained with @NotBlank for validation and correct database constraints (unique and non-nullable).

---

`24-26`: **Proper timestamp field with appropriate constraints.**

The createdAt field is correctly annotated with @PastOrPresent validation and has appropriate database constraints (non-nullable and non-updatable).

---

`28-29`: **Bidirectional relationship with Post entities correctly configured.**

The one-to-many relationship with Post entities is properly configured with appropriate cascade, fetch, and orphan removal settings.

---

`31-34`: **Lifecycle callback correctly initializes creation timestamp.**

The @PrePersist method properly initializes the createdAt field with the current timestamp if not already set.

---

`70-79`: **Correct implementation of equals method with Hibernate proxy handling.**

The equals method correctly handles Hibernate proxies, which is essential for proper entity equality checking in JPA applications, especially with lazy loading.

---

`81-84`: **Correct implementation of hashCode method with Hibernate proxy handling.**

The hashCode method correctly handles Hibernate proxies, maintaining consistency with the equals method implementation.

---

`86-92`: **Appropriate toString implementation.**

The toString method provides a clean representation of the entity with relevant field information, which is helpful for logging and debugging.

</details>
<details>
<summary>src/main/java/org/storkforge/barkr/config/Config.java (4)</summary>

`16-19`: **Appropriate configuration class setup with exclusion from test profile.**

The @Configuration class is correctly annotated with @Profile("!test") to prevent it from running during tests, which is a good practice to avoid unintended data seeding in test environments.

---

`21-38`: **Database seeding logic for Account entities is well-implemented.**

The CommandLineRunner effectively checks for an empty database before proceeding with seeding operations, which prevents duplicate data when the application restarts. The Account entities are created and saved properly with meaningful sample data.

---

`39-53`: **Post entity creation and relationship setup is correct.**

The creation of Post entities with content and proper linking to their respective Account entities is correctly implemented. The logic appropriately logs the progress of the seeding process.

---

`54-57`: **Appropriate handling of non-empty database scenario.**

The implementation correctly skips the seeding process when data already exists in the database, which prevents duplicate entries and provides helpful logging.

</details>

</blockquote></details>

</details>

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submitted_at: 2025-03-28T14:23:23Z

Review comments:
diff_hunk: @@ -0,0 +1,27 @@
+package org.storkforge.barkr.domain;
+
+import jakarta.transaction.Transactional;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
+import org.storkforge.barkr.domain.entity.Post;
+import org.storkforge.barkr.infrastructure.persistence.PostRepository;
+import java.util.List;
+
+@Service
+@Transactional
+public class PostService {
+
+    Logger log = LoggerFactory.getLogger(UserService.class);
path: src/main/java/org/storkforge/barkr/domain/PostService.java
user: login: coderabbitai[bot]
body: _⚠️ Potential issue_

**Logger uses incorrect class reference**

The logger is using UserService.class instead of PostService.class, which would cause confusing log outputs.


```diff
-    Logger log = LoggerFactory.getLogger(UserService.class);
+    Logger log = LoggerFactory.getLogger(PostService.class);
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
    Logger log = LoggerFactory.getLogger(PostService.class);
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated comment by CodeRabbit -->

✅ Addressed in commit b233e08
created_at: 2025-03-26T13:41:56Z
author_association: CONTRIBUTOR
diff_hunk: @@ -0,0 +1,22 @@
+CREATE TABLE post
+(
+    id         BIGINT GENERATED BY DEFAULT AS IDENTITY NOT NULL,
+    content    VARCHAR(255),
path: src/main/resources/db/migration/V1__add_post_and_user.sql
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**Update the `content` column definition to match entity validation.**

The `content` column in the `post` table should be marked as NOT NULL to match the `@NotBlank` validation constraint in the `Post` entity class. This ensures consistency between the database schema and the application code.


Apply the following change to make the `content` column non-nullable:

```diff
-    content    VARCHAR(255),
+    content    VARCHAR(255) NOT NULL,
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
    content    VARCHAR(255) NOT NULL,
`````

</details>

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<!-- This is an auto-generated comment by CodeRabbit -->

✅ Addressed in commit bf6a8b5
created_at: 2025-03-26T13:41:56Z
author_association: CONTRIBUTOR
diff_hunk: @@ -0,0 +1,22 @@
+CREATE TABLE post
+(
+    id         BIGINT GENERATED BY DEFAULT AS IDENTITY NOT NULL,
+    content    VARCHAR(255),
+    user_id    BIGINT                                  NOT NULL,
+    created_at TIMESTAMP WITHOUT TIME ZONE,
+    CONSTRAINT pk_post PRIMARY KEY (id)
+);
+
+CREATE TABLE "user"
+(
+    user_id    BIGINT GENERATED BY DEFAULT AS IDENTITY NOT NULL,
+    username   VARCHAR(255),
path: src/main/resources/db/migration/V1__add_post_and_user.sql
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**Update the `username` column definition to match entity validation.**

The `username` column in the `user` table should be marked as NOT NULL to match the `@NotBlank` validation constraint in the `User` entity class.


Apply the following change to make the `username` column non-nullable:

```diff
-    username   VARCHAR(255),
+    username   VARCHAR(255) NOT NULL,
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
    username   VARCHAR(255) NOT NULL,
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated comment by CodeRabbit -->

✅ Addressed in commit bf6a8b5
created_at: 2025-03-26T13:41:56Z
author_association: CONTRIBUTOR
diff_hunk: @@ -0,0 +1,93 @@
+package org.storkforge.barkr.domain.entity;
+
+import jakarta.persistence.*;
+import jakarta.validation.constraints.*;
+import org.hibernate.proxy.HibernateProxy;
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+@Entity
+public class Account {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "account_id")
+    private Long id;
+
+    @NotBlank
+    @Column(unique = true, nullable = false)
+    private String username;
+
+    @PastOrPresent
+    @Column(nullable = false, updatable = false)
+    private LocalDateTime createdAt;
+
+  @OneToMany(mappedBy = "account", cascade = CascadeType.ALL, orphanRemoval = true, fetch = FetchType.LAZY)
+  private List<Post> posts = new ArrayList<>();
+
+    @PrePersist
+    protected void onCreate() {
+        if (createdAt == null) createdAt = LocalDateTime.now();
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+
+  public void addPost(Post post) {
+    posts.add(post);
+    post.setAccount(this);
+  }
+
+  public void removePost(Post post) {
+    posts.remove(post);
+    post.setAccount(null);
+  }
path: src/main/java/org/storkforge/barkr/domain/entity/Account.java
user: login: coderabbitai[bot]
body: _⚠️ Potential issue_

**Potential issue with Post's required Account reference in removePost method.**

Setting the account to null in the removePost method conflicts with the Post entity's configuration where the Account is marked as non-optional (@ManyToOne with optional=false in Post.java).


```diff
  public void removePost(Post post) {
    posts.remove(post);
-   post.setAccount(null);
  }
```

Consider removing just the line that sets the account to null, as this would violate the constraint that a Post must have an Account. Or, implement a separate deletion logic if the intent is to delete the Post when it's removed from an Account.


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
  public void removePost(Post post) {
    posts.remove(post);
  }
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated reply by CodeRabbit -->
created_at: 2025-03-27T19:59:06Z
author_association: CONTRIBUTOR
diff_hunk: @@ -0,0 +1,93 @@
+package org.storkforge.barkr.domain.entity;
+
+import jakarta.persistence.*;
+import jakarta.validation.constraints.*;
+import org.hibernate.proxy.HibernateProxy;
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+@Entity
+public class Account {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "account_id")
+    private Long id;
+
+    @NotBlank
+    @Column(unique = true, nullable = false)
+    private String username;
+
+    @PastOrPresent
+    @Column(nullable = false, updatable = false)
+    private LocalDateTime createdAt;
+
+  @OneToMany(mappedBy = "account", cascade = CascadeType.ALL, orphanRemoval = true, fetch = FetchType.LAZY)
+  private List<Post> posts = new ArrayList<>();
+
+    @PrePersist
+    protected void onCreate() {
+        if (createdAt == null) createdAt = LocalDateTime.now();
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+
+  public void addPost(Post post) {
+    posts.add(post);
+    post.setAccount(this);
+  }
+
+  public void removePost(Post post) {
+    posts.remove(post);
+    post.setAccount(null);
+  }
path: src/main/java/org/storkforge/barkr/domain/entity/Account.java
user: login: voffie
body: The idea is that once a post is deleted, it should be deleted everywhere. So maybe it is a good idea to not set the account to null due to the rule. What would you recommend as the best way to solve this? We also have `@OneToMany(mappedBy = "account", cascade = CascadeType.ALL, orphanRemoval = true, fetch = FetchType.LAZY)` for posts if an account is deleted.
created_at: 2025-03-27T20:07:37Z
author_association: COLLABORATOR
diff_hunk: @@ -0,0 +1,93 @@
+package org.storkforge.barkr.domain.entity;
+
+import jakarta.persistence.*;
+import jakarta.validation.constraints.*;
+import org.hibernate.proxy.HibernateProxy;
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+@Entity
+public class Account {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "account_id")
+    private Long id;
+
+    @NotBlank
+    @Column(unique = true, nullable = false)
+    private String username;
+
+    @PastOrPresent
+    @Column(nullable = false, updatable = false)
+    private LocalDateTime createdAt;
+
+  @OneToMany(mappedBy = "account", cascade = CascadeType.ALL, orphanRemoval = true, fetch = FetchType.LAZY)
+  private List<Post> posts = new ArrayList<>();
+
+    @PrePersist
+    protected void onCreate() {
+        if (createdAt == null) createdAt = LocalDateTime.now();
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+
+  public void addPost(Post post) {
+    posts.add(post);
+    post.setAccount(this);
+  }
+
+  public void removePost(Post post) {
+    posts.remove(post);
+    post.setAccount(null);
+  }
path: src/main/java/org/storkforge/barkr/domain/entity/Account.java
user: login: coderabbitai[bot]
body: @voffie Based on your requirement that posts should be deleted when removed, the best approach is to simply remove the `post.setAccount(null)` line from your `removePost` method:

```java
public void removePost(Post post) {
  posts.remove(post);
}
```

With your current configuration (`orphanRemoval = true` in the `@OneToMany` annotation), JPA will automatically delete any post that's removed from the Account's collection. Setting the account to null is unnecessary since:

1. The post will be deleted anyway due to orphanRemoval
2. Setting account to null would violate the `optional=false` constraint on the Post side
3. JPA will handle the deletion properly when the transaction is committed

This approach aligns perfectly with your requirement that "once a post is deleted, it should be deleted everywhere" as the orphanRemoval feature ensures the post is completely removed from the database.

---

<details>
<summary>✏️ Learnings added</summary>

```
Learnt from: voffie
PR: storkforge/Barkr#3
File: src/main/java/org/storkforge/barkr/domain/entity/Account.java:65-68
Timestamp: 2025-03-27T20:08:15.014Z
Learning: In a JPA bidirectional relationship between Account and Post entities in the Barkr application, when Account has @OneToMany configured with orphanRemoval=true, simply removing a Post from the Account's collection will mark it for deletion without needing to manually set post.setAccount(null), which would violate the non-optional relationship constraint.
```

> Note: Learnings are effective only in the context of similar code segments. To apply general coding guidelines, please configure [review instructions](https://docs.coderabbit.ai/guides/review-instructions). You can manage existing learnings in the [app](https://app.coderabbit.ai/learnings).

</details>

<!-- This is an auto-generated reply by CodeRabbit -->
created_at: 2025-03-27T20:08:16Z
author_association: CONTRIBUTOR

PR comments:
user: login: coderabbitai[bot]
created_at: 2025-03-26T13:36:47Z
body: <!-- This is an auto-generated comment: summarize by coderabbit.ai -->
<!-- walkthrough_start -->

## Walkthrough
The pull request updates configuration settings in the deployment files and adds new project features. The Docker Compose file now uses updated PostgreSQL environment variables and explicit port mapping. A Spring Boot validation dependency is introduced in the Maven configuration. New domain classes, including JPA entities for Post and Account, along with their corresponding Service and Repository layers, are added. Additionally, related SQL migration scripts and properties modifications support the new database schema and application behavior.

## Changes

| File(s) | Summary of changes |
|---------|--------------------|
| `compose.yaml` | Updated PostgreSQL environment variables (`POSTGRES_DB`, `POSTGRES_USER`, `POSTGRES_PASSWORD`) and modified port mapping from `5432` to `5432:5432`. |
| `pom.xml` | Added dependency for Spring Boot validation (`spring-boot-starter-validation`). |
| `src/.../domain/PostService.java` <br> `src/.../domain/AccountService.java` | Introduced new Service classes with a `findAll()` method for Posts and Accounts. |
| `src/.../domain/entity/Post.java` <br> `src/.../domain/entity/Account.java` | Added new JPA entities with field validations, relationships, and lifecycle callbacks. |
| `src/.../infrastructure/persistence/PostRepository.java` <br> `src/.../infrastructure/persistence/AccountRepository.java` | Added repository interfaces extending ListCrudRepository for managing Post and Account entities. |
| `src/main/resources/application-dev.properties` | Added properties for Docker Compose lifecycle management, SQL logging, and SQL formatting. |
| `src/main/resources/application.properties` | Removed the Docker Compose lifecycle property and added a property to disable fallback to the system locale. |
| `src/main/resources/db/migration/V1__add_post_and_account.sql` | Added SQL migration script creating `post` and `account` tables with primary keys, unique constraint, and foreign key relationship. |
| `src/.../config/Config.java` | Introduced a configuration class with a method to initialize the database with sample data on startup. |

## Sequence Diagram(s)

```mermaid
sequenceDiagram
    participant C as Client
    participant PS as PostService
    participant PR as PostRepository

    C->>PS: findAll()
    PS->>PR: findAll()
    PR-->>PS: List<Post>
    PS-->>C: List<Post>
```

```mermaid
sequenceDiagram
    participant C as Client
    participant AS as AccountService
    participant AR as AccountRepository

    C->>AS: findAll()
    AS->>AR: findAll()
    AR-->>AS: List<Account>
    AS-->>C: List<Account>
```

## Poem
> I'm a rabbit with a joyful heart,  
> Hopping through code with a brand new start,  
> Posts and accounts in every schema and line,  
> New validations make my world divine,  
> Leaping over bugs on a moonlit byte,  
> Celebrating change with a hopping delight! 🐇✨

<!-- walkthrough_end -->


---

<details>
<summary>📜 Recent review details</summary>

**Configuration used: CodeRabbit UI**
**Review profile: CHILL**
**Plan: Pro**

<details>
<summary>📥 Commits</summary>

Reviewing files that changed from the base of the PR and between 940c9fd667eb91b0dcf873d30c470653d7e7c745 and 3140ef7f7d00755f7dbed949fdb91ea00e540591.

</details>

<details>
<summary>📒 Files selected for processing (1)</summary>

* `src/main/java/org/storkforge/barkr/domain/entity/Account.java` (1 hunks)

</details>

<details>
<summary>🚧 Files skipped from review as they are similar to previous changes (1)</summary>

* src/main/java/org/storkforge/barkr/domain/entity/Account.java

</details>

</details>
<!-- internal state start -->


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= -->

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---



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</details>

<!-- tips_end -->
author_association: CONTRIBUTOR
user: login: efpcode
created_at: 2025-03-27T19:26:34Z
body: Just wanted to know if there is a reason for not merging this request yet?
@kirre02 & @voffie .

author_association: CONTRIBUTOR