// This is your Prisma schema file,
// learn more about it in the docs: https://pris.ly/d/prisma-schema

generator client {
  provider      = "prisma-client-js"
  output        = "../src/generated/client"
  binaryTargets = ["native", "linux-musl-arm64-openssl-3.0.x", "linux-musl-openssl-3.0.x"]
}

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

model Collection {
  id        String    @id @default(uuid())
  name      String
  drawings  Drawing[]
  createdAt DateTime  @default(now())
  updatedAt DateTime  @updatedAt
}

model Drawing {
  id           String      @id @default(uuid())
  name         String
  elements     String // Stored as JSON string
  appState     String // Stored as JSON string
  files        String      @default("{}") // Stored as JSON string
  preview      String? // SVG string for thumbnail
  version      Int         @default(1)
  collectionId String?
  collection   Collection? @relation(fields: [collectionId], references: [id])
  createdAt    DateTime    @default(now())
  updatedAt    DateTime    @updatedAt

  // Privacy/Encryption fields
  isPrivate     Boolean @default(false)
  encryptedData String? // Encrypted blob containing elements, appState, files when isPrivate=true
  iv            String? // Initialization vector for AES-GCM decryption
}

// Singleton model for storing vault password hash and settings
model PrivateVault {
  id           String   @id @default("vault") // Singleton pattern
  passwordHash String // bcrypt hash for password verification
  salt         String // Salt for client-side key derivation (hex encoded)
  hint         String? // Optional password hint
  createdAt    DateTime @default(now())
  updatedAt    DateTime @updatedAt
}

model Library {
  id        String   @id @default("default") // Singleton pattern - use "default" ID
  items     String   @default("[]") // Stored as JSON string array of library items
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
}