ADD: added some quiality of life features

prisma/schema.prisma

@@ -69,12 +69,28 @@ model Company {
   user            User       @relation(fields: [userId], references: [id], onDelete: Cascade)
   customers       Customer[]
   invoices        Invoice[]
+  services        Service[]
   createdAt       DateTime   @default(now())
   updatedAt       DateTime   @updatedAt
 
   @@map("companies")
 }
 
+model Service {
+  id          String   @id @default(cuid())
+  companyId   String
+  company     Company  @relation(fields: [companyId], references: [id], onDelete: Cascade)
+  name        String
+  description String?  @db.Text
+  unit        String?
+  unitPrice   Decimal  @db.Decimal(10, 2)
+  taxRate     Decimal  @db.Decimal(5, 2)
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+
+  @@map("services")
+}
+
 model Customer {
   id        String    @id @default(cuid())
   companyId String
@@ -96,7 +112,7 @@ model Customer {
 
 model Invoice {
   id           String        @id @default(cuid())
-  number       String
+  number       String?
   companyId    String
   company      Company       @relation(fields: [companyId], references: [id], onDelete: Cascade)
   customerId   String
@@ -113,6 +129,7 @@ model Invoice {
   grossTotal   Decimal       @db.Decimal(10, 2)
   createdAt    DateTime      @default(now())
   updatedAt    DateTime      @updatedAt
+  deletedAt    DateTime?
 
   @@unique([companyId, number])
   @@map("invoices")