// Menu
// Website
// User
// Product
// Order
// OpenAI API
// Chat Message

generator client {
  provider = "prisma-client-js"
  output   = "./client"
}

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

// =======
// ｜WebSite｜
// =======
model Announcement {
  id        Int     @id @default(autoincrement())
  title     String
  content   String
  sortOrder Float?
  isHidden  Boolean @default(false)

  // metadata
  createdAt DateTime @default(now()) @db.Timestamp(6)
  updatedAt DateTime @default(now()) @updatedAt
}

model Setting {
  key   String @id
  value Json?
}

model Cache {
  key   String @id
  value Json?
}

// =======
// ｜User｜
// =======

enum Role {
  Admin
  User
}

model User {
  id       Int     @id @default(autoincrement())
  role     Role    @default(User)
  name     String? @unique // 用户名
  email    String? @unique // 邮箱
  phone    String? @unique // 手机 +86
  password String? @db.Text // 密码

  // relation
  oauths       OAuth[]
  orders       Order[]
  chatSessions ChatSession[]
  chatMessages ChatMessage[]

  createdAt DateTime @default(now()) @db.Timestamp(6) // 注册时间
  updatedAt DateTime @default(now()) @updatedAt
  isBlocked Boolean  @default(false) // 是否被封禁
}

enum OAuthProvider {
  Apple
  Github
  Google
  Wechat
  Microsofe
}

model OAuth {
  id           Int           @id @default(autoincrement())
  provider     OAuthProvider
  providerId   String
  accessToken  String
  refreshToken String
  expiredAt    DateTime

  data Json? // 自定义数据

  // relation
  user   User @relation(fields: [userId], references: [id])
  userId Int

  // metadata
  createdAt DateTime @default(now()) @db.Timestamp(6) // 注册时间
  updatedAt DateTime @default(now()) @updatedAt

  @@unique([provider, providerId])
}

// ==========
// ｜Product｜
// ==========
model Model {
  id    Int     @id @default(autoincrement())
  name  String  @unique // 模型实际的名称
  label String? // 展示的名称，为空则使用实际名称

  price      Int // 单位为分
  isDisabled Boolean @default(false) // 是否启用
  sortOrder  Float?

  // relation
  products ModelInProduct[]
  messages ChatMessage[]

  @@unique([id, name])
}

model Product {
  id       Int      @id @default(autoincrement())
  name     String   @unique
  features String[]

  isHidden Boolean @default(false) // 是否隐藏

  price     Int // 单位为分，产品单价
  stock     Int    @default(-1) // 库存
  sortOrder Float?

  // 产品的持续时间
  // -1 表示一次性商品
  // 2592000 严格表示一个月，非固定 30 天，可能为 28/29/30/31 天
  // 7776000 严格表示一个季度，同上
  // 31104000 严格表示一年，即 365 或 366 天
  duration Int

  models ModelInProduct[]

  // relation
  order      Order[]
  category   Category? @relation(fields: [categoryId], references: [id])
  categoryId Int?
}

// 套餐次数上线
model ModelInProduct {
  // 在duration时间内限制使用times次
  times    Int // 限制次数
  duration Int // 单位为秒，限制持续时间 若为 0 则不限制 如每三小时小时

  // 对应的 Model
  model   Model @relation(fields: [modelId], references: [id])
  modelId Int

  // 对应的 Product
  product   Product @relation(fields: [productId], references: [id])
  productId Int

  @@id([modelId, productId])
}

// 产品分类，用于标签化管理产品
model Category {
  id   Int    @id @default(autoincrement())
  name String @unique

  isHidden  Boolean @default(false) // 是否隐藏
  sortOrder Float?

  products Product[]
}

enum OrderStatus {
  Pending // 待支付
  Paid // 已支付
  Failed // 支付失败
  Refunded // 已退款
}

enum OrderType {
  Subscription // 订阅
  OneTime // 一次性
}

// 订单
model Order {
  id     String      @id @unique
  type   OrderType
  status OrderStatus @default(Pending)

  count  Int @default(1) // 数量
  amount Int // 订单金额，单位为分

  startAt DateTime?
  endAt   DateTime?

  isCurrent Boolean @default(false) // 是否为当前订单

  // relation

  user   User @relation(fields: [userId], references: [id])
  userId Int

  product   Product @relation(fields: [productId], references: [id])
  productId Int

  // metadata
  createdAt DateTime @default(now())
  updatedAt DateTime @default(now()) @updatedAt

  rawData Json? // 支付的原始数据
}

// =============
// ｜OpenAI API｜
// =============
enum OpenAIKeyStatus {
  Active
  Disabled
  Expired
}

model OpenAIKey {
  id     Int             @id @default(autoincrement())
  key    String          @unique
  url    String?
  status OpenAIKeyStatus @default(Active)

  weight     Int?
  total      Float?
  usage      Float?
  tokenUsage Float?
  priceRatio Float?
  rateLimit  Int?
  note       String? @db.Text

  // metadata
  createdAt DateTime  @default(now())
  updatedAt DateTime  @default(now()) @updatedAt
  expiredAt DateTime?
}

// ===============
// ｜Chat Message｜
// ===============

model ChatSession {
  id String @id @default(uuid())

  // 主题，使用模型总结
  // TODO 当用户手动重命名后，不再使用模型总结
  topic              String?
  lastSummarizeIndex Int?

  memoryPrompt String?
  messages     ChatMessage[]

  // relation
  user   User @relation(fields: [userId], references: [id])
  userId Int

  // metadata
  isDeleted Boolean  @default(false) // 用户删除
  isBlocked Boolean  @default(false) // 封禁
  createdAt DateTime @default(now())
  updatedAt DateTime @default(now()) @updatedAt
}

enum ChatMessageRole {
  System
  User
  Assistant
}

model ChatMessage {
  id String @id @default(uuid())

  role    ChatMessageRole
  content String
  // Tokenizer number
  token   Int?

  // relation
  chatSession   ChatSession? @relation(fields: [chatSessionId], references: [id])
  chatSessionId String?

  model   Model? @relation(fields: [modelId], references: [id])
  modelId Int?

  user   User @relation(fields: [userId], references: [id])
  userId Int

  // metadata
  isDeleted Boolean  @default(false) // usually deleted by user
  isBlocked Boolean  @default(false) // usually blocked by admin or policy reasons
  createdAt DateTime @default(now())
  updatedAt DateTime @default(now()) @updatedAt
}

// 用户设置
model ChatSetting {
  userId              Int  @id
  historyMessageCount Int?

  submitKey   String? // 提交键
  tightBorder Boolean @default(false) // 紧凑模式

  defalutModelId  Int?
  temperature     Float?
  maxTokens       Int?
  presencePenalty Float?
}