// This is your Prisma schema file,
// learn more about it in the docs: https://pris.ly/d/prisma-schema

// Get a free hosted Postgres database in seconds: `npx create-db`

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

datasource db {
  provider = "mysql"
}

model User {
  id        Int      @id @default(autoincrement())
  name      String
  email     String   @unique
  password  String
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
}

model Article {
  id        Int      @id @default(autoincrement())
  title     String
  slug      String   @unique
  content   String
  date      String
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
}

model Strategy {
  id          Int      @id @default(autoincrement())
  name        String
  description String
  data        Json
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt
}

model Indicator {
  id          Int              @id @default(autoincrement())
  name        String           @unique
  groupName   String
  title       String           @default("")
  unit        String           @default("")
  source      String           @default("")
  frequency   String           @default("month") // year | quarter | month | day
  hidden      Boolean          @default(false)   // true = 数据/脚本保留, 但不在前端展示
  points      IndicatorPoint[]
  createdAt   DateTime         @default(now())
  updatedAt   DateTime         @updatedAt
}

model IndicatorPoint {
  id          Int       @id @default(autoincrement())
  indicatorId Int
  indicator   Indicator @relation(fields: [indicatorId], references: [id], onDelete: Cascade)
  period      String    // "2024" | "2024-Q1" | "2024-01" | "2024-01-15"
  value       Float
  createdAt   DateTime  @default(now())
  updatedAt   DateTime  @updatedAt

  @@unique([indicatorId, period])
}


// 新闻: 每天 3 点由 mx_finance_search_news 拉取, 按影响大小排序, 累加多日供首页无限滚动
model News {
  id          Int      @id @default(autoincrement())
  title       String
  summary     String   @default("")
  source      String   @default("")
  url         String   @default("")
  publishedAt DateTime
  impactRank  Int
  createdAt   DateTime @default(now())

  @@unique([title, publishedAt])
  @@index([publishedAt])
}

// 报警: refresh 写库时比对同 (indicatorName, period) 的跨源数据, 差异超阈值记录
model Alert {
  id            Int      @id @default(autoincrement())
  indicatorName String
  period        String
  valueA        Float
  valueB        Float
  sourceA       String
  sourceB       String
  diff          Float
  diffRatio     Float
  createdAt     DateTime @default(now())

  @@index([createdAt])
}

model Econ_SowInventory {
  id        Int      @id @default(autoincrement())
  month     String   @unique
  inventory Int      // 能繁母猪数量（万头）
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
}

model ScraperCache {
  id            Int      @id @default(autoincrement())
  scraperName   String   @unique  // 爬虫名称，如：sow-inventory
  lastDataHash  String?           // 上次数据指纹
  lastUpdateAt  DateTime          // 上次更新时间
  metadata      Json?             // 其他元数据
  createdAt     DateTime @default(now())
  updatedAt     DateTime @updatedAt
}