recall/prisma/schema.prisma

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

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

model Note {
  id         String    @id @default(cuid())
  title      String
  content    String
  type       String    @default("note")
  isFavorite Boolean   @default(false)
  isPinned   Boolean   @default(false)
  createdAt  DateTime  @default(now())
  updatedAt  DateTime  @updatedAt
  tags       NoteTag[]
  backlinks  Backlink[] @relation("BacklinkTarget")
  outbound   Backlink[] @relation("BacklinkSource")
  usageEvents NoteUsage[]
}

model Tag {
  id    String    @id @default(cuid())
  name  String    @unique
  notes NoteTag[]
}

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

  @@id([noteId, tagId])
}

model Backlink {
  id           String   @id @default(cuid())
  sourceNoteId String
  targetNoteId String
  sourceNote   Note   @relation("BacklinkSource", fields: [sourceNoteId], references: [id], onDelete: Cascade)
  targetNote   Note   @relation("BacklinkTarget", fields: [targetNoteId], references: [id], onDelete: Cascade)
  createdAt    DateTime @default(now())

  @@unique([sourceNoteId, targetNoteId])
}

model NoteUsage {
  id        String   @id @default(cuid())
  noteId    String
  note      Note     @relation(fields: [noteId], references: [id], onDelete: Cascade)
  eventType String   // 'view' | 'search_click' | 'related_click' | 'link_click'
  query     String?
  metadata  String?
  createdAt DateTime @default(now())

  @@index([noteId, createdAt])
  @@index([eventType, createdAt])
}