velody/backend/prisma/schema.prisma

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

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

model Device {
  id               String            @id @default(uuid()) @db.Uuid
  platform         DevicePlatform
  deviceName       String            @map("device_name")
  appVersion       String            @map("app_version")
  installTokenHash String            @map("install_token_hash")
  lastSeenAt       DateTime          @map("last_seen_at")
  createdAt        DateTime          @default(now()) @map("created_at")
  updatedAt        DateTime          @updatedAt @map("updated_at")
  uploadSessions   UploadSession[]
  syncCursor       DeviceSyncCursor?
  audioAssets      AudioAsset[]

  @@map("devices")
}

model Track {
  id                  String        @id @default(uuid()) @db.Uuid
  primaryAudioAssetId String?       @unique @db.Uuid @map("primary_audio_asset_id")
  artworkAssetId      String?       @unique @db.Uuid @map("artwork_asset_id")
  title               String
  artist              String
  album               String?
  albumArtist         String?       @map("album_artist")
  genre               String?
  discNumber          Int?          @map("disc_number")
  trackNumber         Int?          @map("track_number")
  year                Int?
  durationMs          Int?          @map("duration_ms")
  status              TrackStatus   @default(ACTIVE)
  createdAt           DateTime      @default(now()) @map("created_at")
  updatedAt           DateTime      @updatedAt @map("updated_at")
  deletedAt           DateTime?     @map("deleted_at")
  primaryAudioAsset   AudioAsset?   @relation("PrimaryAudioAsset", fields: [primaryAudioAssetId], references: [id], onDelete: SetNull, onUpdate: Cascade)
  artworkAsset        ArtworkAsset? @relation("TrackArtwork", fields: [artworkAssetId], references: [id], onDelete: SetNull, onUpdate: Cascade)
  audioAssets         AudioAsset[]  @relation("TrackAudioAssets")

  @@map("tracks")
}

model AudioAsset {
  id               String   @id @default(uuid()) @db.Uuid
  trackId          String?  @db.Uuid @map("track_id")
  sha256           String   @unique
  storageKey       String   @unique @map("storage_key")
  originalFilename String   @map("original_filename")
  mimeType         String   @map("mime_type")
  fileExtension    String   @map("file_extension")
  fileSizeBytes    BigInt   @map("file_size_bytes")
  bitRateKbps      Int?     @map("bit_rate_kbps")
  sampleRateHz     Int?     @map("sample_rate_hz")
  channels         Int?
  durationMs       Int?     @map("duration_ms")
  sourceDeviceId   String?  @db.Uuid @map("source_device_id")
  createdAt        DateTime @default(now()) @map("created_at")
  track            Track?   @relation("TrackAudioAssets", fields: [trackId], references: [id], onDelete: SetNull, onUpdate: Cascade)
  primaryForTrack  Track?   @relation("PrimaryAudioAsset")
  sourceDevice     Device?  @relation(fields: [sourceDeviceId], references: [id], onDelete: SetNull, onUpdate: Cascade)

  @@map("audio_assets")
}

model ArtworkAsset {
  id            String   @id @default(uuid()) @db.Uuid
  sha256        String   @unique
  storageKey    String   @unique @map("storage_key")
  mimeType      String   @map("mime_type")
  width         Int?
  height        Int?
  fileSizeBytes BigInt   @map("file_size_bytes")
  createdAt     DateTime @default(now()) @map("created_at")
  track         Track?   @relation("TrackArtwork")

  @@map("artwork_assets")
}

model UploadSession {
  id                String              @id @default(uuid()) @db.Uuid
  deviceId          String              @db.Uuid @map("device_id")
  expectedSha256    String              @map("expected_sha256")
  expectedSizeBytes BigInt              @map("expected_size_bytes")
  receivedBytes     BigInt              @default(0) @map("received_bytes")
  tempStoragePath   String              @map("temp_storage_path")
  status            UploadSessionStatus @default(PENDING)
  expiresAt         DateTime            @map("expires_at")
  createdAt         DateTime            @default(now()) @map("created_at")
  updatedAt         DateTime            @updatedAt @map("updated_at")
  device            Device              @relation(fields: [deviceId], references: [id], onDelete: Cascade, onUpdate: Cascade)

  @@map("upload_sessions")
}

model LibraryEvent {
  id             BigInt      @id @default(autoincrement())
  entityType     EntityType  @map("entity_type")
  entityId       String      @db.Uuid @map("entity_id")
  action         EventAction
  payloadVersion Int         @default(1) @map("payload_version")
  createdAt      DateTime    @default(now()) @map("created_at")

  @@map("library_events")
}

model DeviceSyncCursor {
  deviceId        String   @id @db.Uuid @map("device_id")
  lastEventId     BigInt   @default(0) @map("last_event_id")
  lastFullSyncAt  DateTime? @map("last_full_sync_at")
  updatedAt       DateTime @updatedAt @map("updated_at")
  device          Device   @relation(fields: [deviceId], references: [id], onDelete: Cascade, onUpdate: Cascade)

  @@map("device_sync_cursors")
}

enum DevicePlatform {
  MACOS
  IPHONE
}

enum TrackStatus {
  ACTIVE
  DELETED
}

enum UploadSessionStatus {
  PENDING
  READY_TO_UPLOAD
  COMPLETED
  FAILED
}

enum EntityType {
  TRACK
  AUDIO_ASSET
  ARTWORK_ASSET
}

enum EventAction {
  CREATED
  UPDATED
  DELETED
}