Converted more procedural programming to OOP

src/application/base/baseEntity.ts

@@ -0,0 +1,67 @@
+import { Database } from '#application/database'
+import { appLogger } from '#application/logger'
+
+export abstract class BaseEntity {
+  async save(): Promise<this> {
+    try {
+      const orm = await Database.getInstance()
+      const em = orm.em.fork()
+
+      await em.begin()
+      try {
+        em.persist(this)
+        await em.flush()
+        await em.commit()
+        return this
+      } catch (error) {
+        await em.rollback()
+        throw error
+      }
+    } catch (error) {
+      appLogger.error(`Failed to save entity: ${error instanceof Error ? error.message : String(error)}`)
+      throw error
+    }
+  }
+
+  async update(): Promise<this> {
+    try {
+      const orm = await Database.getInstance()
+      const em = orm.em.fork()
+
+      await em.begin()
+      try {
+        em.merge(this)
+        await em.flush()
+        await em.commit()
+        return this
+      } catch (error) {
+        await em.rollback()
+        throw error
+      }
+    } catch (error) {
+      appLogger.error(`Failed to update entity: ${error instanceof Error ? error.message : String(error)}`)
+      throw error
+    }
+  }
+
+  async delete(): Promise<this> {
+    try {
+      const orm = await Database.getInstance()
+      const em = orm.em.fork()
+
+      await em.begin()
+      try {
+        em.remove(this)
+        await em.flush()
+        await em.commit()
+        return this
+      } catch (error) {
+        await em.rollback()
+        throw error
+      }
+    } catch (error) {
+      appLogger.error(`Failed to remove entity: ${error instanceof Error ? error.message : String(error)}`)
+      throw error
+    }
+  }
+}