generator client {
  provider = "prisma-client-js"
}

datasource db {
  provider = "mysql"
  url      = env("DATABASE_URL")
}

model User {
  id           String    @id @default(cuid())
  email        String    @unique
  passwordHash String
  name         String
  createdAt    DateTime  @default(now())
  updatedAt    DateTime  @updatedAt
  companies    Company[]

  @@map("users")
}

model Company {
  id              String     @id @default(cuid())
  name            String
  legalForm       String?
  taxId           String?
  vatId           String?
  address         String
  zip             String
  city            String
  country         String     @default("DE")
  email           String?
  phone           String?
  website         String?
  bankIban        String?
  bankBic         String?
  bankName        String?
  invoicePrefix   String     @default("RE")
  invoiceSequence Int        @default(0)
  userId          String
  user            User       @relation(fields: [userId], references: [id], onDelete: Cascade)
  customers       Customer[]
  invoices        Invoice[]
  createdAt       DateTime   @default(now())
  updatedAt       DateTime   @updatedAt

  @@map("companies")
}

model Customer {
  id        String    @id @default(cuid())
  companyId String
  company   Company   @relation(fields: [companyId], references: [id], onDelete: Cascade)
  name      String
  taxId     String?
  address   String
  zip       String
  city      String
  country   String    @default("DE")
  email     String?
  phone     String?
  invoices  Invoice[]
  createdAt DateTime  @default(now())
  updatedAt DateTime  @updatedAt

  @@map("customers")
}

model Invoice {
  id           String        @id @default(cuid())
  number       String
  companyId    String
  company      Company       @relation(fields: [companyId], references: [id], onDelete: Cascade)
  customerId   String
  customer     Customer      @relation(fields: [customerId], references: [id])
  issueDate    DateTime
  deliveryDate DateTime?
  dueDate      DateTime
  status       InvoiceStatus @default(DRAFT)
  notes        String?       @db.Text
  items        InvoiceItem[]
  netTotal     Decimal       @db.Decimal(10, 2)
  taxTotal     Decimal       @db.Decimal(10, 2)
  grossTotal   Decimal       @db.Decimal(10, 2)
  createdAt    DateTime      @default(now())
  updatedAt    DateTime      @updatedAt

  @@unique([companyId, number])
  @@map("invoices")
}

enum InvoiceStatus {
  DRAFT
  SENT
  PAID
  CANCELLED
}

model InvoiceItem {
  id          String  @id @default(cuid())
  invoiceId   String
  invoice     Invoice @relation(fields: [invoiceId], references: [id], onDelete: Cascade)
  position    Int
  description String  @db.Text
  quantity    Decimal @db.Decimal(10, 3)
  unit        String?
  unitPrice   Decimal @db.Decimal(10, 2)
  taxRate     Decimal @db.Decimal(5, 2)
  netAmount   Decimal @db.Decimal(10, 2)
  taxAmount   Decimal @db.Decimal(10, 2)
  grossAmount Decimal @db.Decimal(10, 2)

  @@map("invoice_items")
}