좋아요 스킴 초안. Ref #1

src/main/java/io/mtudy/soundcloud/like/application/inputs/CreatePlaylistLikeInput.java

@@ -0,0 +1,19 @@
+package io.mtudy.soundcloud.like.application.inputs;
+
+import lombok.NoArgsConstructor;
+
+import javax.validation.constraints.NotBlank;
+
+@NoArgsConstructor
+public class CreatePlaylistLikeInput {
+    @NotBlank
+    private String playlistId;
+
+    public CreatePlaylistLikeInput(String playlistId) {
+        this.playlistId = playlistId;
+    }
+
+    public String getPlaylistId() {
+        return playlistId;
+    }
+}

src/main/java/io/mtudy/soundcloud/like/application/interfaces/web/graphql/CreateLikeMutationResolver.java

@@ -0,0 +1,22 @@
+package io.mtudy.soundcloud.like.application.interfaces.web.graphql;
+
+import graphql.kickstart.tools.GraphQLMutationResolver;
+import io.mtudy.soundcloud.like.application.inputs.CreatePlaylistLikeInput;
+import io.mtudy.soundcloud.like.application.services.CreateLikeService;
+import io.mtudy.soundcloud.like.domain.entities.Like;
+import org.springframework.stereotype.Component;
+
+import javax.validation.Valid;
+
+@Component
+public class CreateLikeMutationResolver implements GraphQLMutationResolver {
+    private final CreateLikeService service;
+
+    public CreateLikeMutationResolver(CreateLikeService service) {
+        this.service = service;
+    }
+
+    public Like createLike(@Valid CreatePlaylistLikeInput input) {
+        return this.service.run(input);
+    }
+}

src/main/java/io/mtudy/soundcloud/like/application/services/CreateLikeService.java

@@ -0,0 +1,28 @@
+package io.mtudy.soundcloud.like.application.services;
+
+import io.mtudy.soundcloud.like.application.inputs.CreatePlaylistLikeInput;
+import io.mtudy.soundcloud.like.domain.entities.Like;
+import io.mtudy.soundcloud.like.domain.entities.PlaylistLike;
+import io.mtudy.soundcloud.like.domain.repotitories.LikeRepository;
+import org.springframework.stereotype.Service;
+
+import java.util.UUID;
+
+@Service
+public class CreateLikeService {
+    private final LikeRepository repository;
+
+    public CreateLikeService(LikeRepository repository) {
+        this.repository = repository;
+    }
+
+    public Like run(CreatePlaylistLikeInput request) {
+        var builder = new PlaylistLike.Builder(
+            UUID.randomUUID().toString(),
+            request.getPlaylistId(),
+            UUID.randomUUID().toString()
+        );
+
+        return this.repository.save(builder.build());
+    }
+}

src/main/java/io/mtudy/soundcloud/like/domain/entities/AlbumLike.java

@@ -0,0 +1,36 @@
+package io.mtudy.soundcloud.like.domain.entities;
+
+import io.mtudy.soundcloud.like.domain.enums.LikeType;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.DiscriminatorValue;
+import javax.persistence.Entity;
+
+@NoArgsConstructor
+@Entity(name = "albumLike")
+@DiscriminatorValue(LikeType.Values.ALBUM)
+public final class AlbumLike extends Like {
+    private AlbumLike(Builder builder) {
+        this.id = builder.id;
+        this.typeId = builder.typeId;
+        this.authorId = builder.authorId;
+    }
+
+    public final static class Builder {
+        private final String id;
+
+        private final String typeId;
+
+        private final String authorId;
+
+        public Builder(String id, String typeId, String authorId) {
+            this.id = id;
+            this.typeId = typeId;
+            this.authorId = authorId;
+        }
+
+        public AlbumLike build() {
+            return new AlbumLike(this);
+        }
+    }
+}

src/main/java/io/mtudy/soundcloud/like/domain/entities/Like.java

@@ -0,0 +1,34 @@
+package io.mtudy.soundcloud.like.domain.entities;
+
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+
+@NoArgsConstructor
+@Entity
+@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
+@DiscriminatorColumn(name = "type",
+    discriminatorType = DiscriminatorType.STRING)
+public abstract class Like {
+    @Id
+    @Column(columnDefinition = "VARCHAR(36)")
+    protected String id;
+
+    @Column(columnDefinition = "VARCHAR(36)")
+    protected String authorId;
+
+    @Column(columnDefinition = "VARCHAR(36)")
+    protected String typeId;
+
+    public String getId() {
+        return id;
+    }
+
+    public String getAuthorId() {
+        return authorId;
+    }
+
+    public String getTypeId() {
+        return typeId;
+    }
+}

src/main/java/io/mtudy/soundcloud/like/domain/entities/PlaylistLike.java

@@ -0,0 +1,36 @@
+package io.mtudy.soundcloud.like.domain.entities;
+
+import io.mtudy.soundcloud.like.domain.enums.LikeType;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.DiscriminatorValue;
+import javax.persistence.Entity;
+
+@NoArgsConstructor
+@Entity(name = "playlistLike")
+@DiscriminatorValue(LikeType.Values.PLAYLIST)
+public final class PlaylistLike extends Like {
+    private PlaylistLike(Builder builder) {
+        this.id = builder.id;
+        this.typeId = builder.typeId;
+        this.authorId = builder.authorId;
+    }
+
+    public final static class Builder {
+        private final String id;
+
+        private final String typeId;
+
+        private final String authorId;
+
+        public Builder(String id, String typeId, String authorId) {
+            this.id = id;
+            this.typeId = typeId;
+            this.authorId = authorId;
+        }
+
+        public PlaylistLike build() {
+            return new PlaylistLike(this);
+        }
+    }
+}

src/main/java/io/mtudy/soundcloud/like/domain/entities/TrackLike.java

@@ -0,0 +1,35 @@
+package io.mtudy.soundcloud.like.domain.entities;
+
+import io.mtudy.soundcloud.like.domain.enums.LikeType;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+
+@NoArgsConstructor
+@Entity(name = "trackLike")
+@DiscriminatorValue(LikeType.Values.TRACK)
+public final class TrackLike extends Like {
+    private TrackLike(Builder builder) {
+        this.id = builder.id;
+        this.typeId = builder.typeId;
+        this.authorId = builder.authorId;
+    }
+
+    public final static class Builder {
+        private final String id;
+
+        private final String typeId;
+
+        private final String authorId;
+
+        public Builder(String id, String typeId, String authorId) {
+            this.id = id;
+            this.typeId = typeId;
+            this.authorId = authorId;
+        }
+
+        public TrackLike build() {
+            return new TrackLike(this);
+        }
+    }
+}

src/main/java/io/mtudy/soundcloud/like/domain/enums/LikeType.java

@@ -0,0 +1,13 @@
+package io.mtudy.soundcloud.like.domain.enums;
+
+public enum LikeType {
+    TRACK(Values.TRACK), ALBUM(Values.ALBUM), PLAYLIST(Values.PLAYLIST);
+
+    LikeType (String val) {}
+
+    public static class Values {
+        public static final String TRACK = "TRACK";
+        public static final String ALBUM = "ALBUM";
+        public static final String PLAYLIST = "PLAYLIST";
+    }
+}

src/main/java/io/mtudy/soundcloud/like/domain/repotitories/LikeRepository.java

@@ -0,0 +1,12 @@
+package io.mtudy.soundcloud.like.domain.repotitories;
+
+import io.mtudy.soundcloud.like.domain.entities.Like;
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface LikeRepository extends CrudRepository<Like, String> {
+    public default Like findByTrackId(String trackId) {
+        return null;
+    }
+}

src/main/resources/db/migration/V1__create_like_table.sql

@@ -0,0 +1,7 @@
+create table `like` (
+    id varchar(36) not null,
+    authorId varchar(36) not null,
+    type varchar(36) not null,
+    typeId varchar(36) not null,
+    primary key (id)
+) engine=InnoDB collate=utf8mb4_general_ci

src/main/resources/schema.graphqls

@@ -12,11 +12,22 @@ type Track {
     artworkUrl: String!
 }
 
+type Like {
+    id : ID!
+    type : String!
+    typeId: String!
+}
+
 type Mutation {
     createTrack(input: CreateTrackInput!): Track
+    likePlaylist(input: likePlaylistInput!): Like
 }
 
 input CreateTrackInput {
     title: String!
     artworkUrl: String!
 }
+
+input likePlaylistInput {
+    playlistId: String!
+}