added chats with another users

src/main/resources/db/changelog/create/006-create-chats.yaml

@@ -0,0 +1,17 @@
+databaseChangeLog:
+  - changeSet:
+      id: 004-create-chats-messages
+      author: you
+      changes:
+        - createTable:
+            tableName: chats
+            columns:
+              - column: { name: id, type: BIGSERIAL, constraints: { primaryKey: true } }
+              - column: { name: user_one_id, type: BIGINT, constraints: { nullable: false } }
+              - column: { name: user_two_id, type: BIGINT, constraints: { nullable: false } }
+              - column: { name: post_id, type: BIGINT }
+              - column: { name: created_at, type: TIMESTAMP, constraints: { nullable: false } }
+        - addUniqueConstraint:
+            tableName: chats
+            columnNames: user_one_id, user_two_id
+            constraintName: uq_chat_users

src/main/resources/db/changelog/create/007-recreate-messages.yaml

@@ -0,0 +1,28 @@
+databaseChangeLog:
+  - changeSet:
+      id: 005-drop-old-messages
+      author: you
+      changes:
+        - dropTable:
+            tableName: messages
+            cascadeConstraints: true
+
+  - changeSet:
+      id: 006-create-messages-new
+      author: you
+      changes:
+        - createTable:
+            tableName: messages
+            columns:
+              - column: { name: id, type: BIGSERIAL, constraints: { primaryKey: true } }
+              - column: { name: chat_id, type: BIGINT, constraints: { nullable: false } }
+              - column: { name: sender_id, type: BIGINT, constraints: { nullable: false } }
+              - column: { name: content, type: TEXT, constraints: { nullable: false } }
+              - column: { name: is_read, type: BOOLEAN, defaultValueBoolean: false }
+              - column: { name: created_at, type: TIMESTAMP, constraints: { nullable: false } }
+        - addForeignKeyConstraint:
+            baseTableName: messages
+            baseColumnNames: chat_id
+            referencedTableName: chats
+            referencedColumnNames: id
+            constraintName: fk_messages_chat