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

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

model Venue {
  id        String   @id @default(uuid())
  name      String
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  devices        Device[]
  clientUsers    ClientUser[]
  tabOwnerships  TabOwnership[]
  remoteCommands RemoteCommand[]
  auditLogs      AuditLog[]
  regCodes       RegistrationCode[]
  plannedTabs    PlannedTab[]
}

model Device {
  id             String    @id @default(uuid())
  venueId        String    @unique
  name           String
  tokenHash      String    @unique
  tokenPrefix    String
  tokenExpiresAt DateTime
  lastSeenAt     DateTime  @default(now())
  revokedAt      DateTime?
  createdAt      DateTime  @default(now())

  venue          Venue              @relation(fields: [venueId], references: [id])
  tabSnapshots   OpenTabSnapshot[]
  tabOwnerships  TabOwnership[]
  remoteCommands RemoteCommand[]

  @@index([venueId, revokedAt])
}

model ClientUser {
  id           String   @id @default(uuid())
  venueId      String
  email        String   @unique
  passwordHash String
  name         String
  role         String   @default("viewer")
  createdAt    DateTime @default(now())

  venue Venue @relation(fields: [venueId], references: [id])

  @@index([venueId])
}

model RegistrationCode {
  id        String   @id @default(uuid())
  venueId   String
  code      String   @unique
  expiresAt DateTime
  usedAt    DateTime?
  createdAt DateTime @default(now())

  venue Venue @relation(fields: [venueId], references: [id])

  @@index([venueId])
}

model OpenTabSnapshot {
  id           String   @id @default(uuid())
  deviceId     String
  tabId        String
  customerName String
  version      Int
  totalInCents Int
  itemCount    Int
  reportedAt   DateTime

  device Device @relation(fields: [deviceId], references: [id])

  @@unique([deviceId, tabId])
  @@index([deviceId])
  @@index([tabId, reportedAt])
}

model TabOwnership {
  tabId          String
  venueId        String
  deviceId       String
  lastReportedAt DateTime

  venue  Venue  @relation(fields: [venueId], references: [id])
  device Device @relation(fields: [deviceId], references: [id])

  @@id([venueId, tabId])
}

model RemoteCommand {
  id              String    @id @default(uuid())
  venueId         String
  deviceId        String
  targetTabId     String
  type            String    @default("close_tab")
  expectedVersion Int
  paymentMethod   String
  requestedBy     String
  status          String    @default("pending")
  result          String?
  acknowledgedAt  DateTime?
  createdAt       DateTime  @default(now())
  expiresAt       DateTime

  venue  Venue  @relation(fields: [venueId], references: [id])
  device Device @relation(fields: [deviceId], references: [id])

  @@index([deviceId, status, createdAt])
  @@index([venueId, status, createdAt])
}

model AuditLog {
  id        String   @id @default(uuid())
  venueId   String
  actorType String
  actorId   String
  action    String
  details   String?
  createdAt DateTime @default(now())

  venue Venue @relation(fields: [venueId], references: [id])

  @@index([venueId, createdAt])
}

model RefreshToken {
  id        String   @id @default(uuid())
  userId    String
  tokenHash String   @unique
  expiresAt DateTime
  revokedAt DateTime?
  createdAt DateTime @default(now())

  @@index([userId])
}

model PlannedTab {
  id           String   @id @default(uuid())
  venueId      String
  customerName String
  position     Int      @default(0)
  createdAt    DateTime @default(now())

  venue Venue @relation(fields: [venueId], references: [id])

  @@unique([venueId, customerName])
  @@index([venueId])
}