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

datasource db {
  provider = "postgresql"
}

model User {
  id                       String                    @id
  name                     String
  email                    String
  emailVerified            Boolean                   @default(false)
  image                    String?
  createdAt                DateTime                  @default(now())
  updatedAt                DateTime                  @updatedAt
  sessions                 Session[]
  accounts                 Account[]
  assigneeIssues           Issue[]                   @relation(name: "assigneeIssues")
  reporterIssues           Issue[]                   @relation(name: "reporterIssues")
  projects                 Project[]
  projectMemberships       ProjectMember[]
  notificationDeviceTokens NotificationDeviceToken[]
  notificationPreferences  NotificationPreference[]
  notificationMessages     NotificationMessage[]

  @@unique([email])
  @@map("user")
}

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

  @@unique([token])
  @@index([userId])
  @@map("session")
}

model Account {
  id                    String    @id
  accountId             String
  providerId            String
  userId                String
  user                  User      @relation(fields: [userId], references: [id], onDelete: Cascade)
  accessToken           String?
  refreshToken          String?
  idToken               String?
  accessTokenExpiresAt  DateTime?
  refreshTokenExpiresAt DateTime?
  scope                 String?
  password              String?
  createdAt             DateTime  @default(now())
  updatedAt             DateTime  @updatedAt

  @@unique([providerId, accountId])
  @@index([userId])
  @@map("account")
}

model Verification {
  id         String   @id
  identifier String
  value      String
  expiresAt  DateTime
  createdAt  DateTime @default(now())
  updatedAt  DateTime @updatedAt

  @@index([identifier])
  @@map("verification")
}

model Issue {
  id         Int       @id @default(autoincrement())
  key        String
  title      String
  content    String?
  status     String
  priority   Int       @default(0)
  assigneeId String?
  assignee   User?     @relation(name: "assigneeIssues", fields: [assigneeId], references: [id], onDelete: Cascade)
  reporterId String
  reporter   User      @relation(name: "reporterIssues", fields: [reporterId], references: [id], onDelete: Cascade)
  projectId  String
  project    Project   @relation(fields: [projectId], references: [id], onDelete: Cascade)
  dueDate    DateTime? @db.Timestamptz(3)
  createdAt  DateTime  @default(now()) @db.Timestamptz(3)
  updatedAt  DateTime  @updatedAt @db.Timestamptz(3)

  @@index([status])
  @@index([assigneeId])
  @@index([reporterId])
  @@index([projectId])
  @@index([createdAt])
  @@index([projectId, createdAt])
  @@index([dueDate])
  @@map("issue")
}

model Project {
  id        String          @id @default(uuid(7))
  name      String
  key       String
  createdAt DateTime        @default(now()) @db.Timestamptz(3)
  updatedAt DateTime        @updatedAt @db.Timestamptz(3)
  issues    Issue[]
  ownerId   String
  owner     User            @relation(fields: [ownerId], references: [id], onDelete: Restrict)
  members   ProjectMember[]

  @@unique([key])
  @@index([createdAt])
  @@index([ownerId])
  @@map("project")
}

model ProjectMember {
  id        String   @id @default(uuid(7))
  projectId String
  userId    String
  createdAt DateTime @default(now()) @db.Timestamptz(3)

  project Project @relation(fields: [projectId], references: [id], onDelete: Cascade)
  user    User    @relation(fields: [userId], references: [id], onDelete: Cascade)

  @@unique([projectId, userId])
  @@index([userId])
  @@map("project_member")
}

/// Push-токены устройств пользователя. Регистрируются напрямую клиентом,
/// без участия остального приложения.
model NotificationDeviceToken {
  id        String   @id @default(uuid(7))
  userId    String
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  token     String
  platform  String // ios | android | web
  createdAt DateTime @default(now()) @db.Timestamptz(3)
  updatedAt DateTime @updatedAt @db.Timestamptz(3)

  @@unique([userId, token])
  @@index([userId])
  @@map("notification_device_token")
}

/// Включён ли у пользователя конкретный канал доставки уведомлений.
/// Категорий нет — настройка одна на канал.
/// Допустимые значения channel валидируются в коде (NotificationChannel VO),
/// а не типом БД — расширение списка каналов не требует миграции.
model NotificationPreference {
  id        String   @id @default(uuid(7))
  userId    String
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  channel   String
  enabled   Boolean  @default(true)
  updatedAt DateTime @updatedAt @db.Timestamptz(3)

  @@unique([userId, channel])
  @@map("notification_preference")
}

/// Лог/история отправленных уведомлений — одна запись на попытку доставки
/// по одному каналу. channel/status — строки, валидируются в коде
/// (NotificationChannel/NotificationStatus VO), см. комментарий выше.
model NotificationMessage {
  id        String    @id @default(uuid(7))
  userId    String
  user      User      @relation(fields: [userId], references: [id], onDelete: Cascade)
  channel   String
  status    String    @default("PENDING")
  subject   String?
  content   String
  error     String?
  sentAt    DateTime? @db.Timestamptz(3)
  createdAt DateTime  @default(now()) @db.Timestamptz(3)

  @@index([userId])
  @@index([status])
  @@index([createdAt])
  @@map("notification_message")
}