From b0b2c5d2e411cbdaf0233544e2c64ba93e8ed615 Mon Sep 17 00:00:00 2001
From: nuyh <hjaehyun25@gmail.com>
Date: Thu, 20 Jul 2023 17:57:13 +0900
Subject: [PATCH] =?UTF-8?q?feat:=20RecommendedPost=20=EC=97=94=ED=8B=B0?=
 =?UTF-8?q?=ED=8B=B0=20=EC=B6=94=EA=B0=80?=
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

#1397
---
 .../prolog/roadmap/domain/Keyword.java        | 11 +---
 .../roadmap/domain/RecommendedPost.java       | 62 +++++++++++++++++++
 .../V4__alter_table_keyword_reference.sql     | 10 +++
 3 files changed, 75 insertions(+), 8 deletions(-)
 create mode 100644 backend/src/main/java/wooteco/prolog/roadmap/domain/RecommendedPost.java
 create mode 100644 backend/src/main/resources/db/migration/prod/V4__alter_table_keyword_reference.sql

diff --git a/backend/src/main/java/wooteco/prolog/roadmap/domain/Keyword.java b/backend/src/main/java/wooteco/prolog/roadmap/domain/Keyword.java
index d58f5e52a..9a13e24ca 100644
--- a/backend/src/main/java/wooteco/prolog/roadmap/domain/Keyword.java
+++ b/backend/src/main/java/wooteco/prolog/roadmap/domain/Keyword.java
@@ -8,10 +8,7 @@
 import wooteco.prolog.roadmap.exception.KeywordSeqException;
 
 import javax.persistence.*;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Objects;
-import java.util.Set;
+import java.util.*;
 
 @Getter
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
@@ -36,10 +33,8 @@ public class Keyword {
     @Column(name = "session_id", nullable = false)
     private Long sessionId;
 
-    @ElementCollection
-    @CollectionTable(name = "keyword_reference")
-    @Column(name = "url")
-    private List<String> references;
+    @OneToMany(mappedBy = "keyword", cascade = CascadeType.ALL, orphanRemoval = true, fetch = FetchType.EAGER)
+    private List<RecommendedPost> recommendedPosts = new ArrayList<>();
 
     @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(name = "parent_id")
diff --git a/backend/src/main/java/wooteco/prolog/roadmap/domain/RecommendedPost.java b/backend/src/main/java/wooteco/prolog/roadmap/domain/RecommendedPost.java
new file mode 100644
index 000000000..3b28d789f
--- /dev/null
+++ b/backend/src/main/java/wooteco/prolog/roadmap/domain/RecommendedPost.java
@@ -0,0 +1,62 @@
+package wooteco.prolog.roadmap.domain;
+
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+import java.util.Objects;
+
+@Entity
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor
+@Getter
+public class RecommendedPost {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(nullable = false)
+    private String url;
+
+    @ManyToOne
+    @JoinColumn(nullable = false)
+    private Keyword keyword;
+
+    public RecommendedPost(final String url) {
+        this(null, url, null);
+    }
+
+    public void updateUrl(final String url) {
+        this.url = url;
+    }
+
+    public void remove() {
+        if (this.keyword == null) {
+            return;
+        }
+
+        keyword.getRecommendedPosts().remove(this);
+        this.keyword = null;
+    }
+
+    public void addKeyword(final Keyword keyword) {
+        this.keyword = keyword;
+        keyword.getRecommendedPosts().add(this);
+    }
+
+    @Override
+    public boolean equals(final Object o) {
+        if (this == o) return true;
+        if (!(o instanceof RecommendedPost)) return false;
+        final RecommendedPost post = (RecommendedPost) o;
+        return Objects.equals(id, post.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+}
diff --git a/backend/src/main/resources/db/migration/prod/V4__alter_table_keyword_reference.sql b/backend/src/main/resources/db/migration/prod/V4__alter_table_keyword_reference.sql
new file mode 100644
index 000000000..0ff33a5b0
--- /dev/null
+++ b/backend/src/main/resources/db/migration/prod/V4__alter_table_keyword_reference.sql
@@ -0,0 +1,10 @@
+drop table prolog.keyword_reference;
+
+create table if not exists prolog.recommended_post
+(
+    id         bigint auto_increment primary key,
+    url        varchar(255) not null,
+    keyword_id bigint       not null,
+    constraint FK_KEYWORD_ID
+        foreign key (keyword_id) references prolog.keyword (id)
+);