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

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

// ─── Users ──────────────────────────────────────────────────────────

model User {
  id        String   @id @default(cuid())
  did       String   @unique // EncryptID DID
  username  String?
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  notebooks NotebookCollaborator[]
  notes     Note[]
  sharedByMe SharedAccess[] @relation("SharedBy")
}

// ─── Notebooks ──────────────────────────────────────────────────────

model Notebook {
  id            String   @id @default(cuid())
  title         String
  slug          String   @unique
  description   String?  @db.Text
  coverColor    String   @default("#f59e0b")
  canvasSlug    String?
  canvasShapeId String?
  isPublic      Boolean  @default(false)
  sortOrder     Int      @default(0)
  createdAt     DateTime @default(now())
  updatedAt     DateTime @updatedAt

  collaborators NotebookCollaborator[]
  notes         Note[]
  sharedAccess  SharedAccess[]

  @@index([slug])
}

enum CollaboratorRole {
  OWNER
  EDITOR
  VIEWER
}

model NotebookCollaborator {
  id         String           @id @default(cuid())
  userId     String
  user       User             @relation(fields: [userId], references: [id], onDelete: Cascade)
  notebookId String
  notebook   Notebook         @relation(fields: [notebookId], references: [id], onDelete: Cascade)
  role       CollaboratorRole @default(VIEWER)
  joinedAt   DateTime         @default(now())

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

// ─── Notes ──────────────────────────────────────────────────────────

model Note {
  id            String   @id @default(cuid())
  notebookId    String?
  notebook      Notebook? @relation(fields: [notebookId], references: [id], onDelete: SetNull)
  authorId      String?
  author        User?    @relation(fields: [authorId], references: [id], onDelete: SetNull)
  title         String
  content       String   @db.Text
  contentPlain  String?  @db.Text
  type          NoteType @default(NOTE)
  url           String?
  language      String?
  mimeType      String?
  fileUrl       String?
  fileSize      Int?
  duration      Int?
  isPinned      Boolean  @default(false)
  canvasShapeId String?
  sortOrder     Int      @default(0)
  createdAt     DateTime @default(now())
  updatedAt     DateTime @updatedAt

  tags NoteTag[]

  @@index([notebookId])
  @@index([authorId])
  @@index([type])
  @@index([isPinned])
}

enum NoteType {
  NOTE
  CLIP
  BOOKMARK
  CODE
  IMAGE
  FILE
  AUDIO
}

// ─── Tags ───────────────────────────────────────────────────────────

model Tag {
  id        String   @id @default(cuid())
  name      String   @unique
  color     String?  @default("#6b7280")
  createdAt DateTime @default(now())

  notes NoteTag[]
}

model NoteTag {
  id     String @id @default(cuid())
  noteId String
  note   Note   @relation(fields: [noteId], references: [id], onDelete: Cascade)
  tagId  String
  tag    Tag    @relation(fields: [tagId], references: [id], onDelete: Cascade)

  @@unique([noteId, tagId])
  @@index([tagId])
  @@index([noteId])
}

// ─── Shared Access ──────────────────────────────────────────────────

model SharedAccess {
  id         String           @id @default(cuid())
  notebookId String
  notebook   Notebook         @relation(fields: [notebookId], references: [id], onDelete: Cascade)
  sharedById String
  sharedBy   User             @relation("SharedBy", fields: [sharedById], references: [id], onDelete: Cascade)
  targetDid  String
  role       CollaboratorRole @default(VIEWER)
  createdAt  DateTime         @default(now())

  @@unique([notebookId, targetDid])
  @@index([targetDid])
}