fix invoice number

database/migrations/.snapshot-negareh.json

@@ -2347,9 +2347,9 @@
         },
         "invoice_number": {
           "name": "invoice_number",
-          "type": "int",
-          "unsigned": false,
-          "autoincrement": false,
+          "type": "serial",
+          "unsigned": true,
+          "autoincrement": true,
           "primary": false,
           "nullable": false,
           "mappedType": "integer"

database/migrations/Migration20260516121012.ts

@@ -3,7 +3,20 @@ import { Migration } from '@mikro-orm/migrations';
 export class Migration20260516121012 extends Migration {
 
   override async up(): Promise<void> {
-    this.addSql(`alter table "invoice_items" add column "sub_total" int generated always as (COALESCE(unit_price, 0) * quantity) STORED not null, add column "total" int generated always as ((COALESCE(unit_price, 0) * quantity) - COALESCE(discount, 0)) STORED not null;`);
+    this.addSql(`
+      DO $$ BEGIN
+        ALTER TABLE "invoice_items"
+          ADD COLUMN "sub_total" int GENERATED ALWAYS AS (COALESCE(unit_price, 0) * quantity) STORED NOT NULL,
+          ADD COLUMN "total" int GENERATED ALWAYS AS ((COALESCE(unit_price, 0) * quantity) - COALESCE(discount, 0)) STORED NOT NULL;
+      EXCEPTION
+        WHEN duplicate_column THEN NULL;
+      END $$;
+    `);
+  }
+
+  override async down(): Promise<void> {
+    this.addSql(`alter table "invoice_items" drop column if exists "sub_total";`);
+    this.addSql(`alter table "invoice_items" drop column if exists "total";`);
   }
 
 }

database/migrations/Migration20260517190050.ts

@@ -0,0 +1,15 @@
+import { Migration } from '@mikro-orm/migrations';
+
+export class Migration20260517190050 extends Migration {
+
+  override async up(): Promise<void> {
+    this.addSql(`CREATE SEQUENCE IF NOT EXISTS invoice_number_seq;`);
+    this.addSql(`SELECT setval('invoice_number_seq', COALESCE((SELECT MAX(invoice_number) FROM invoices), 0) + 1, false);`);
+    this.addSql(`ALTER TABLE "invoices" ALTER COLUMN "invoice_number" SET DEFAULT nextval('invoice_number_seq');`);
+  }
+
+  override async down(): Promise<void> {
+    this.addSql(`ALTER TABLE "invoices" ALTER COLUMN "invoice_number" DROP DEFAULT;`);
+  }
+
+}