// Vector memory for embeddings (conversation and character knowledge)

enum MemoryType {
  conversation
  character
}

model VectorMemory {
  id              String    @id @default(uuid())
  content         String
  embedding       Unsupported("vector")?
  memoryType      MemoryType @default(conversation)
  metadata        Json?
  createdAt       DateTime  @default(now())

  conversationId  String?
  conversation    Conversation? @relation(fields: [conversationId], references: [id], onDelete: Cascade)
  
  characterId     String?
  character       Character?    @relation(fields: [characterId], references: [id], onDelete: Cascade)
  
  knowledgeId     String?
  knowledge       CharacterKnowledge? @relation(fields: [knowledgeId], references: [id], onDelete: Cascade)

  @@index([conversationId])
  @@index([characterId])
  @@index([knowledgeId])
  @@index([memoryType])
}