feat: 책 생성 api 구현

src/main/java/com/audio/common/entity/BaseEntity.java

@@ -0,0 +1,36 @@
+package com.audio.common.entity;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.EntityListeners;
+import jakarta.persistence.MappedSuperclass;
+import java.time.Instant;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import lombok.experimental.SuperBuilder;
+
+@Getter
+@Setter
+@MappedSuperclass
+@AllArgsConstructor
+@NoArgsConstructor
+@SuperBuilder
+public abstract class BaseEntity {
+
+    @Column(nullable = false, updatable = false)
+    protected Instant createdAt;
+
+    @Column(nullable = false)
+    protected Instant updatedAt;
+
+    @Column(nullable = false)
+    protected boolean deleted;
+
+    protected Instant deletedAt;
+
+    public void delete() {
+        this.deleted = true;
+        this.deletedAt = Instant.now();
+    }
+}

src/main/java/com/audio/core/auth/api/controller/AuthController.java

@@ -11,7 +11,6 @@ import com.audio.core.auth.application.dto.result.LoginResult;
 import com.audio.core.auth.application.dto.result.RegisterUseCaseResult;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.ResponseEntity;
-import org.springframework.security.core.annotation.AuthenticationPrincipal;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;

src/main/java/com/audio/core/auth/domain/service/AccountService.java

@@ -26,11 +26,7 @@ public class AccountService {
 
         String hashedPassword = passwordEncoder.encode(password);
 
-        Account account = Account.builder()
-            .loginId(loginId)
-            .name("임시 이름")
-            .passwordHash(hashedPassword)
-            .build();
+        Account account = Account.builder().loginId(loginId).name("임시 이름").passwordHash(hashedPassword).build();
 
         log.info("account: {}", account);
 
@@ -58,4 +54,9 @@ public class AccountService {
         return account.getId();
 
     }
+
+    public Account getAccountById(Long accountId) {
+        return accountRepository.findById(accountId)
+            .orElseThrow(() -> new NotExistEntityException(Account.class.getName()));
+    }
 }

src/main/java/com/audio/core/book/api/controller/BookController.java

@@ -0,0 +1,40 @@
+package com.audio.core.book.api.controller;
+
+import com.audio.core.book.api.dto.req.BookCreateRequest;
+import com.audio.core.book.api.dto.res.BookCreateResponse;
+import com.audio.core.book.application.usecase.CreateBookUseCase;
+import com.audio.core.auth.application.userDetail.User;
+import com.audio.core.book.application.usecase.dto.command.CreateBookCommand;
+import com.audio.core.book.application.usecase.dto.result.CreateBookResult;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/api/v1/book")
+public class BookController {
+
+    private final CreateBookUseCase createBookUseCase;
+
+    @PostMapping("/create")
+    public ResponseEntity<BookCreateResponse> create(
+        @AuthenticationPrincipal User user,
+        @RequestBody BookCreateRequest bookCreateRequest
+    ) {
+        CreateBookCommand command = CreateBookCommand.builder()
+            .accountId(user.getAccountId())
+            .subject(bookCreateRequest.getSubject())
+            .build();
+
+        CreateBookResult result = createBookUseCase.execute(command);
+
+        BookCreateResponse response = BookCreateResponse.builder().build();
+
+        return ResponseEntity.ok(response);
+    }
+}

src/main/java/com/audio/core/book/api/dto/req/BookCreateRequest.java

@@ -0,0 +1,17 @@
+package com.audio.core.book.api.dto.req;
+
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Builder
+@AllArgsConstructor(access = AccessLevel.PROTECTED)
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@Getter
+public class BookCreateRequest {
+
+    private String subject;
+
+}

src/main/java/com/audio/core/book/api/dto/res/BookCreateResponse.java

@@ -0,0 +1,20 @@
+package com.audio.core.book.api.dto.res;
+
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Builder
+@AllArgsConstructor(access = AccessLevel.PROTECTED)
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@Getter
+public class BookCreateResponse {
+
+    private String title;
+
+    private Integer durationSec;
+
+    private String contentPath;
+}

src/main/java/com/audio/core/book/application/event/BookGenerationRequestedEvent.java

@@ -0,0 +1,5 @@
+package com.audio.core.book.application.event;
+
+public record BookGenerationRequestedEvent(Long accountId, String subject, String genre) {
+
+}

src/main/java/com/audio/core/book/application/listener/BookGenerationEventListener.java

@@ -0,0 +1,22 @@
+package com.audio.core.book.application.listener;
+
+import com.audio.core.book.application.event.BookGenerationRequestedEvent;
+import com.audio.core.book.application.workflow.BookGenerationWorkflow;
+import lombok.RequiredArgsConstructor;
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.stereotype.Component;
+import org.springframework.transaction.event.TransactionPhase;
+import org.springframework.transaction.event.TransactionalEventListener;
+
+@Component
+@RequiredArgsConstructor
+public class BookGenerationEventListener {
+
+    private final BookGenerationWorkflow bookGenerationWorkflow;
+
+    @Async
+    @TransactionalEventListener(phase = TransactionPhase.AFTER_COMMIT)
+    public void on(BookGenerationRequestedEvent event) {
+        bookGenerationWorkflow.run(event.accountId(), event.subject(), event.genre());
+    }
+}

src/main/java/com/audio/core/book/application/usecase/CreateBookUseCase.java

@@ -0,0 +1,38 @@
+package com.audio.core.book.application.usecase;
+
+import com.audio.core.book.application.event.BookGenerationRequestedEvent;
+import com.audio.core.book.application.usecase.dto.command.CreateBookCommand;
+import com.audio.core.book.application.usecase.dto.result.CreateBookResult;
+import com.audio.core.book.domain.entity.Book;
+import com.audio.core.book.domain.service.BookService;
+import com.audio.core.auth.domain.entity.Account;
+import com.audio.core.auth.domain.service.AccountService;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.context.ApplicationEventPublisher;
+import org.springframework.stereotype.Component;
+import org.springframework.transaction.annotation.Transactional;
+
+@Component
+@RequiredArgsConstructor
+@Slf4j
+public class CreateBookUseCase {
+
+    private final AccountService accountService;
+    private final BookService bookService;
+    private final ApplicationEventPublisher applicationEventPublisher;
+
+    @Transactional
+    public CreateBookResult execute(CreateBookCommand command) {
+        Account account = accountService.getAccountById(command.getAccountId());
+        Book createdBook = bookService.createBookForAccountId(account.getId(), command.getSubject());
+
+        applicationEventPublisher.publishEvent(new BookGenerationRequestedEvent(
+            account.getId(),
+            command.getSubject(),
+            "다른 필요한 값"
+        ));
+
+        return CreateBookResult.builder().title(createdBook.getTitle()).build();
+    }
+}

src/main/java/com/audio/core/book/application/usecase/dto/command/CreateBookCommand.java

@@ -0,0 +1,16 @@
+package com.audio.core.book.application.usecase.dto.command;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor
+@Getter
+public class CreateBookCommand {
+
+    private Long accountId;
+    private String subject;
+}

src/main/java/com/audio/core/book/application/usecase/dto/result/CreateBookResult.java

@@ -0,0 +1,16 @@
+package com.audio.core.book.application.usecase.dto.result;
+
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Builder
+@AllArgsConstructor(access = AccessLevel.PROTECTED)
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@Getter
+public class CreateBookResult {
+
+    private String title;
+}

src/main/java/com/audio/core/book/application/workflow/BookGenerationWorkflow.java

@@ -0,0 +1,19 @@
+package com.audio.core.book.application.workflow;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+@Slf4j
+public class BookGenerationWorkflow {
+
+    public void run(Long accountId, String subject, String genre) {
+        log.info("1. llm 으로 책 생성");
+        log.info("2. 성공/실패 응답으로 책 상태 업데이트");
+//        log.info("2-1. 오디오북 생성");
+//        log.info("2-2.");
+        log.info("3. S3 저장");
+    }
+}

src/main/java/com/audio/core/book/domain/entity/Book.java

@@ -0,0 +1,61 @@
+package com.audio.core.book.domain.entity;
+
+import com.audio.common.entity.BaseEntity;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.OneToOne;
+import java.time.Instant;
+import java.util.ArrayList;
+import java.util.List;
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Builder.Default;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.experimental.SuperBuilder;
+
+@Entity
+@SuperBuilder
+@AllArgsConstructor(access = AccessLevel.PROTECTED)
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@Getter
+public class Book extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    private Long ownerId;
+
+    @Column(nullable = false, length = 200)
+    private String subject;
+
+    @Column(nullable = false, length = 200)
+    private String title;
+
+    @OneToOne
+    @JoinColumn(name = "active_version_id")
+    private BookVersion activeVersion;
+
+    @Default
+    @OneToMany(fetch = FetchType.LAZY, mappedBy = "book")
+    private List<BookVersion> bookVersions = new ArrayList<>();
+
+    public void addVersion(BookVersion version) {
+        bookVersions.add(version);
+        this.updatedAt = Instant.now();
+    }
+
+    public void setActiveVersion(BookVersion version) {
+        this.activeVersion = version;
+        this.updatedAt = Instant.now();
+    }
+
+}

src/main/java/com/audio/core/book/domain/entity/BookVersion.java

@@ -0,0 +1,53 @@
+package com.audio.core.book.domain.entity;
+
+import com.audio.common.entity.BaseEntity;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.experimental.SuperBuilder;
+
+@Entity
+@SuperBuilder
+@AllArgsConstructor(access = AccessLevel.PROTECTED)
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@Getter
+@Table(name = "book_version")
+public class BookVersion extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @ManyToOne
+    @JoinColumn(name = "book_id")
+    private Book book;
+
+    @Enumerated(EnumType.STRING)
+    @Column(nullable = false, length = 20)
+    private Status status = Status.GENERATING;
+
+    @Enumerated(EnumType.STRING)
+    private LengthPreset lengthPreset;
+
+    private String bookS3Key;
+
+    private String audioS3Key;
+
+    private String language = "en-Us";
+
+    private Integer audioDurationSec;
+
+    public enum Status { GENERATING, READY, FAILED, DELETED }
+    public enum LengthPreset { SHORT, NORMAL, LONG }
+}

src/main/java/com/audio/core/book/domain/repository/BookRepository.java

@@ -0,0 +1,9 @@
+package com.audio.core.book.domain.repository;
+
+import com.audio.core.book.domain.entity.Book;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface BookRepository extends JpaRepository<Book, Long> {
+}

src/main/java/com/audio/core/book/domain/service/BookService.java

@@ -0,0 +1,33 @@
+package com.audio.core.book.domain.service;
+
+import com.audio.core.book.domain.entity.Book;
+import com.audio.core.book.domain.entity.BookVersion;
+import com.audio.core.book.domain.repository.BookRepository;
+import java.util.List;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@RequiredArgsConstructor
+@Slf4j
+public class BookService {
+
+    private final BookRepository bookRepository;
+
+    @Transactional
+    public Book createBookForAccountId(Long ownerId, String subject) {
+        Book book = Book.builder()
+            .ownerId(ownerId)
+            .subject(subject)
+            .build();
+
+        BookVersion bookVersion = BookVersion.builder().build();
+
+        book.addVersion(bookVersion);
+        book.setActiveVersion(bookVersion);
+
+        return bookRepository.save(book);
+    }
+}

src/main/resources/db/changelog/changelog.yaml

@@ -1,3 +1,5 @@
 databaseChangeLog:
-  - include:
-      file: db/sql/account/251203/1_create_account.sql
+  - includeAll:
+      path: db/sql/account/251203
+  - includeAll:
+      path: db/sql/book/251215

src/main/resources/db/sql/book/251215/1_create_book.sql

@@ -0,0 +1,17 @@
+-- liquibase formatted sql
+-- changeset ijeongmin:1_create_book.sql
+create table book (
+    id                bigint       not null auto_increment primary key,
+    owner_id          bigint       null,
+    subject           varchar(200) not null,
+    title             varchar(200) not null,
+    active_version_id bigint       null,
+
+    created_at        timestamp    null,
+    updated_at        timestamp    null,
+    deleted           boolean      not null default false,
+    deleted_at        timestamp    null,
+
+    key index_active_version_id (active_version_id)
+) engine = InnoDB
+  default charset = utf8mb4;

src/main/resources/db/sql/book/251215/2_create_book_version.sql

@@ -0,0 +1,20 @@
+-- liquibase formatted sql
+-- changeset ijeongmin:2_create_book_version.sql
+create table book_version (
+    id                 bigint       not null auto_increment primary key,
+    book_id            bigint       null,
+    status             varchar(20)  not null,
+    length_preset      varchar(10)  null,
+    book_s3_key        varchar(500) null,
+    audio_s3_key       varchar(500) null,
+    language           varchar(10)  null,
+    audio_duration_sec int          null,
+
+    created_at         timestamp    null,
+    updated_at         timestamp    null,
+    deleted            boolean      not null default false,
+    deleted_at         timestamp    null,
+
+    key idx_book_version_book_id (book_id),
+    key idx_book_version_status (status)
+);