generator client {
  provider     = "prisma-client"
  output       = "../generated/prisma"
  moduleFormat = "cjs"
}

datasource db {
  provider = "sqlite"
}

model User {
  id              String           @id
  email           String           @unique
  passwordHash    String
  bankCards       BankCard[]
  expenseCategories ExpenseCategory[]
  bankCardOperations BankCardOperation[]
  sessions        Session[]
  tbankConnection TbankConnection?
  createdAt       DateTime         @default(now())
  updatedAt       DateTime         @updatedAt
}

model TbankConnection {
  userId         String   @unique
  encryptedToken String
  connectedAt    DateTime
  user           User     @relation(fields: [userId], references: [id], onDelete: Cascade)
}

model Session {
  id               String   @id
  userId           String
  refreshTokenHash String
  expiresAt        DateTime
  revokedAt        DateTime?
  createdAt        DateTime @default(now())
  updatedAt        DateTime @updatedAt
  user             User     @relation(fields: [userId], references: [id], onDelete: Cascade)

  @@index([userId])
}

model BankCard {
  id String @id
  userId String
  name String
  bankName String?
  lastFour String?
  paymentSystem String?
  openingBalanceKopecks BigInt
  openingDate String
  version Int @default(1)
  archivedAt DateTime?
  createFingerprint String
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  user User @relation(fields: [userId], references: [id], onDelete: Restrict)
  operations BankCardOperation[] @relation("SourceCard")
  incomingOperations BankCardOperation[] @relation("TargetCard")
  @@index([userId])
}
model ExpenseCategory {
  id String @id
  userId String
  name String
  nameKey String
  seedKey String?
  version Int @default(1)
  user User @relation(fields: [userId], references: [id], onDelete: Restrict)
  operations BankCardOperation[]
  @@unique([userId, nameKey])
  @@unique([userId, seedKey])
}
model BankCardOperation {
  id String @id
  userId String
  kind String
  cardId String
  targetCardId String?
  categoryId String?
  originalExpenseId String?
  amountKopecks BigInt
  date String
  description String?
  version Int @default(1)
  deletedAt DateTime?
  createFingerprint String
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  user User @relation(fields: [userId], references: [id], onDelete: Restrict)
  card BankCard @relation("SourceCard", fields: [cardId], references: [id], onDelete: Restrict)
  targetCard BankCard? @relation("TargetCard", fields: [targetCardId], references: [id], onDelete: Restrict)
  category ExpenseCategory? @relation(fields: [categoryId], references: [id], onDelete: Restrict)
  originalExpense BankCardOperation? @relation("RefundExpense", fields: [originalExpenseId], references: [id], onDelete: Restrict, onUpdate: NoAction)
  refunds BankCardOperation[] @relation("RefundExpense")
  @@index([userId, cardId, date])
  @@index([userId, targetCardId, date])
  @@index([originalExpenseId])
}