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

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

model User {
  id                       String          @id @default(uuid())
  username                 String          @unique
  createdAt                DateTime        @default(now())
  encryptedMasterKeyPrf    String?         // Encrypted using PRF-derived key
  encryptedMasterKeyPrfIv  String?
  encryptedMasterKeyPrfTag String?
  encryptedMasterKeyRec    String          // Encrypted using 12-word recovery phrase
  encryptedMasterKeyRecIv  String
  encryptedMasterKeyRecTag String
  credentials              Credential[]
  logbooks                 Logbook[]
  collaborations           Collaboration[]
  pushSubscriptions        PushSubscription[]
  notificationPrefs        UserNotificationPrefs?
  appearancePrefs          UserAppearancePrefs?
  personPool                 PersonPayload[]
  vesselPool                 VesselPayload[]
}

model PushSubscription {
  id        String   @id @default(uuid())
  userId    String
  endpoint  String   @unique
  p256dh    String
  auth      String
  userAgent String?
  locale    String?
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

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

  @@index([userId])
}

model UserNotificationPrefs {
  userId                     String   @id
  collaboratorChangesEnabled Boolean  @default(false)
  updatedAt                  DateTime @updatedAt

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

model UserAppearancePrefs {
  userId      String   @id
  theme       String   @default("auto")
  colorScheme String   @default("auto")
  updatedAt   DateTime @updatedAt

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

model Credential {
  id           String   @id @default(uuid())
  userId       String
  credentialId String   @unique
  label        String?
  publicKey    Bytes
  counter      BigInt
  transports   String[] // WebAuthn transports list
  user         User     @relation(fields: [userId], references: [id], onDelete: Cascade)

  @@index([userId])
}

model Logbook {
  id             String             @id @default(uuid())
  userId         String
  encryptedTitle String
  createdAt      DateTime           @default(now())
  updatedAt      DateTime           @updatedAt
  user           User               @relation(fields: [userId], references: [id], onDelete: Cascade)

  // E2E Encrypted key for the owner (encrypted with owner's master key)
  encryptedKey   String?
  iv             String?
  tag            String?

  yachts         YachtPayload[]
  crews          CrewPayload[]
  logbookCrewSelection LogbookCrewSelectionPayload?
  logbookVesselSelection LogbookVesselSelectionPayload?
  deviations     DeviationPayload[]
  entries        EntryPayload[]
  photos         PhotoPayload[]
  gpsTracks      GpsTrackPayload[]
  collaborators  Collaboration[]
  invitations    Invitation[]

  @@index([userId])
}

model Collaboration {
  id                  String   @id @default(uuid())
  logbookId           String
  userId              String
  role                String   // "READ" | "WRITE"
  
  // The Logbook Key encrypted with this collaborator's master key
  encryptedLogbookKey String
  iv                  String
  tag                 String
  
  createdAt           DateTime @default(now())

  logbook             Logbook  @relation(fields: [logbookId], references: [id], onDelete: Cascade)
  user                User     @relation(fields: [userId], references: [id], onDelete: Cascade)

  @@unique([logbookId, userId])
}

model Invitation {
  token      String   @id @default(uuid())
  logbookId  String
  role       String   // "READ" | "WRITE"
  createdAt  DateTime @default(now())
  expiresAt  DateTime

  logbook    Logbook  @relation(fields: [logbookId], references: [id], onDelete: Cascade)
}

model YachtPayload {
  id            String   @id @default(uuid())
  logbookId     String   @unique
  encryptedData String
  iv            String
  tag           String
  updatedAt     DateTime @updatedAt
  logbook       Logbook  @relation(fields: [logbookId], references: [id], onDelete: Cascade)
}

model CrewPayload {
  id            String   @id @default(uuid())
  logbookId     String
  payloadId     String
  encryptedData String
  iv            String
  tag           String
  updatedAt     DateTime @updatedAt
  logbook       Logbook  @relation(fields: [logbookId], references: [id], onDelete: Cascade)

  @@unique([logbookId, payloadId])
}

model PersonPayload {
  id            String   @id @default(uuid())
  userId        String
  payloadId     String
  encryptedData String
  iv            String
  tag           String
  updatedAt     DateTime @updatedAt
  user          User     @relation(fields: [userId], references: [id], onDelete: Cascade)

  @@unique([userId, payloadId])
  @@index([userId])
}

model LogbookCrewSelectionPayload {
  id            String   @id @default(uuid())
  logbookId     String   @unique
  encryptedData String
  iv            String
  tag           String
  updatedAt     DateTime @updatedAt
  logbook       Logbook  @relation(fields: [logbookId], references: [id], onDelete: Cascade)
}

model VesselPayload {
  id            String   @id @default(uuid())
  userId        String
  payloadId     String
  encryptedData String
  iv            String
  tag           String
  updatedAt     DateTime @updatedAt
  user          User     @relation(fields: [userId], references: [id], onDelete: Cascade)

  @@unique([userId, payloadId])
  @@index([userId])
}

model LogbookVesselSelectionPayload {
  id            String   @id @default(uuid())
  logbookId     String   @unique
  encryptedData String
  iv            String
  tag           String
  updatedAt     DateTime @updatedAt
  logbook       Logbook  @relation(fields: [logbookId], references: [id], onDelete: Cascade)
}

model DeviationPayload {
  id            String   @id @default(uuid())
  logbookId     String   @unique
  encryptedData String
  iv            String
  tag           String
  updatedAt     DateTime @updatedAt
  logbook       Logbook  @relation(fields: [logbookId], references: [id], onDelete: Cascade)
}

model EntryPayload {
  id            String   @id @default(uuid())
  logbookId     String
  payloadId     String
  encryptedData String
  iv            String
  tag           String
  updatedAt     DateTime @updatedAt
  logbook       Logbook  @relation(fields: [logbookId], references: [id], onDelete: Cascade)

  @@unique([logbookId, payloadId])
  @@index([logbookId])
}

model PhotoPayload {
  id            String   @id @default(uuid())
  logbookId     String
  payloadId     String
  entryId       String
  encryptedData String
  iv            String
  tag           String
  updatedAt     DateTime @updatedAt
  logbook       Logbook  @relation(fields: [logbookId], references: [id], onDelete: Cascade)

  @@unique([logbookId, payloadId])
  @@index([logbookId])
  @@index([entryId])
}

model GpsTrackPayload {
  id            String   @id @default(uuid())
  logbookId     String
  entryId       String   @unique
  encryptedData String
  iv            String
  tag           String
  updatedAt     DateTime @updatedAt
  logbook       Logbook  @relation(fields: [logbookId], references: [id], onDelete: Cascade)

  @@index([logbookId])
}

model AiSummaryUsage {
  id        String   @id @default(uuid())
  logbookId String
  entryId   String
  count     Int      @default(0)
  updatedAt DateTime @updatedAt

  @@unique([logbookId, entryId])
  @@index([logbookId])
}