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

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

// ─── Auth ────────────────────────────────────────────────

model User {
  id            String    @id @default(cuid())
  did           String?   @unique
  username      String?   @unique
  name          String?
  email         String?   @unique
  emailVerified DateTime?
  image         String?
  createdAt     DateTime  @default(now())
  updatedAt     DateTime  @updatedAt

  memberships SpaceMember[]
  notebooks   Notebook[]
  comments    Comment[]
  suggestions Suggestion[]
  reactions   Reaction[]
}

// ─── Multi-tenant Spaces ─────────────────────────────────

enum SpaceRole {
  ADMIN
  MODERATOR
  MEMBER
  VIEWER
}

model Space {
  id          String   @id @default(cuid())
  slug        String   @unique
  name        String
  description String   @default("")
  icon        String   @default("")
  visibility  String   @default("public_read")
  ownerDid    String?
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  members   SpaceMember[]
  notebooks Notebook[]
}

model SpaceMember {
  id       String    @id @default(cuid())
  userId   String
  spaceId  String
  role     SpaceRole @default(MEMBER)
  joinedAt DateTime  @default(now())

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

  @@unique([userId, spaceId])
}

// ─── Notebooks & Notes ───────────────────────────────────

model Notebook {
  id          String   @id @default(cuid())
  spaceId     String
  title       String
  description String   @default("")
  icon        String   @default("📓")
  createdBy   String
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  space   Space  @relation(fields: [spaceId], references: [id], onDelete: Cascade)
  creator User   @relation(fields: [createdBy], references: [id])
  notes   Note[]

  @@index([spaceId])
}

model Note {
  id         String   @id @default(cuid())
  notebookId String
  title      String   @default("Untitled")
  yjsDocId   String   @unique @default(cuid())
  sortOrder  Int      @default(0)
  createdBy  String
  createdAt  DateTime @default(now())
  updatedAt  DateTime @updatedAt

  notebook    Notebook     @relation(fields: [notebookId], references: [id], onDelete: Cascade)
  comments    Comment[]
  suggestions Suggestion[]

  @@index([notebookId])
}

// ─── Suggestions (Track Changes) ─────────────────────────

enum SuggestionStatus {
  PENDING
  ACCEPTED
  REJECTED
}

enum SuggestionType {
  INSERT
  DELETE
  FORMAT
  REPLACE
}

model Suggestion {
  id         String           @id @default(cuid())
  noteId     String
  authorId   String
  type       SuggestionType
  status     SuggestionStatus @default(PENDING)
  fromPos    Int
  toPos      Int
  content    String?
  oldContent String?
  attrs      Json?
  resolvedBy String?
  resolvedAt DateTime?
  createdAt  DateTime         @default(now())

  note   Note @relation(fields: [noteId], references: [id], onDelete: Cascade)
  author User @relation(fields: [authorId], references: [id])

  @@index([noteId, status])
}

// ─── Comments & Threads ──────────────────────────────────

model Comment {
  id        String    @id @default(cuid())
  noteId    String
  authorId  String
  parentId  String?
  body      String
  fromPos   Int
  toPos     Int
  resolved  Boolean   @default(false)
  createdAt DateTime  @default(now())
  updatedAt DateTime  @updatedAt

  note      Note       @relation(fields: [noteId], references: [id], onDelete: Cascade)
  author    User       @relation(fields: [authorId], references: [id])
  parent    Comment?   @relation("CommentThread", fields: [parentId], references: [id])
  replies   Comment[]  @relation("CommentThread")
  reactions Reaction[]

  @@index([noteId])
}

// ─── Emoji Reactions ─────────────────────────────────────

model Reaction {
  id        String   @id @default(cuid())
  commentId String
  userId    String
  emoji     String
  createdAt DateTime @default(now())

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

  @@unique([commentId, userId, emoji])
}