Add data model changes

src/data/migrations/1669392941776-data.ts

@@ -0,0 +1,19 @@
+import { MigrationInterface, QueryRunner } from "typeorm";
+
+export class data1669392941776 implements MigrationInterface {
+    name = 'data1669392941776'
+
+    public async up(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(`
+            ALTER TABLE "guild_setting"
+            ADD "preserveDataOnGuildLeave" boolean NOT NULL DEFAULT false
+        `);
+    }
+
+    public async down(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(`
+            ALTER TABLE "guild_setting" DROP COLUMN "preserveDataOnGuildLeave"
+        `);
+    }
+
+}

src/data/model/guildSetting.ts

@@ -10,4 +10,7 @@ export class GuildSetting {
 
     @Column("timestamp", { nullable: true, default: null })
     isPremiumUntil!: Date | null;
+
+    @Column("boolean", { default: false })
+    preserveDataOnGuildLeave!: boolean
 }

src/tools/data.ts

@@ -12,6 +12,7 @@ export async function getGuildSetting(guildID: string): Promise<GuildSetting> {
         guildSetting.id = guildID;
         guildSetting.isPremiumUntil = null;
         guildSetting.notificationChannelID = null;
+        guildSetting.preserveDataOnGuildLeave = false;
     }
 
     return guildSetting;