// 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"
}

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

// User model
model User {
  id            String    @id @default(uuid())
  email         String    @unique
  password_hash String
  nickname      String?
  created_at    DateTime  @default(now())
  updated_at    DateTime  @updatedAt

  // Relations
  events        Event[]
  notes         Note[]
  conversations AICoachConversation[]

  @@map("users")
}

// Event model (for both Anniversary and Reminder)
model Event {
  id           String    @id @default(uuid())
  user_id      String
  type         String    // 'anniversary' | 'reminder' (String for SQLite)
  title        String
  content      String?   // Only for reminders
  date         DateTime  // For anniversaries: the date; For reminders: the reminder date
  is_lunar     Boolean   @default(false)
  repeat_type  String     @default("none") // 'yearly' | 'monthly' | 'none' (String for SQLite)
  is_holiday   Boolean   @default(false) // Only for anniversaries
  is_completed Boolean   @default(false) // Only for reminders
  priority     String    @default("none") // 'none' | 'red' | 'green' | 'yellow' (String for SQLite)
  created_at   DateTime  @default(now())
  updated_at   DateTime  @updatedAt

  // Relations
  user User @relation(fields: [user_id], references: [id], onDelete: Cascade)

  @@index([user_id])
  @@index([type])
  @@index([date])
  @@map("events")
}

// Note model (for quick notes)
model Note {
  id        String   @id @default(uuid())
  user_id   String
  content   String   // HTML content from rich text editor
  created_at DateTime @default(now())
  updated_at DateTime @updatedAt

  // Relations
  user User @relation(fields: [user_id], references: [id], onDelete: Cascade)

  // One note per user (based on PRD - 便签编辑区)
  @@unique([user_id])
  @@map("notes")
}

// AI Conversation model
model AICoachConversation {
  id          String   @id @default(uuid())
  user_id     String
  message     String
  response    String
  parsed_data String?    // AI parsed event data (JSON string for SQLite)
  created_at  DateTime @default(now())

  // Relations
  user User @relation(fields: [user_id], references: [id], onDelete: Cascade)

  @@index([user_id])
  @@map("ai_coach_conversations")
}

// Note: Using String types instead of enums for SQLite compatibility
// Event type values: 'anniversary' | 'reminder'
// Repeat type values: 'yearly' | 'monthly' | 'none'