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

// Looking for ways to speed up your queries, or scale easily with your serverless or edge functions?
// Try Prisma Accelerate: https://pris.ly/cli/accelerate-init

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

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

// 用户表
model User {
  id        Int      @id @default(autoincrement())
  name      String
  email     String   @unique
  createdAt DateTime @default(now())
  accounts  Account[]
  budgets   Budget[]
  records   Record[]
}

// 账户表
model Account {
  id        Int      @id @default(autoincrement())
  userId    Int
  name      String   // 账户名称(支付宝、微信、银行卡等)
  balance   Decimal  @default(0)  // 当前余额
  type      String   // 账户类型
  color     String   // 显示颜色
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  user      User     @relation(fields: [userId], references: [id])
  records   Record[]
}

// 交易记录表
model Record {
  id          Int      @id @default(autoincrement())
  userId      Int
  accountId   Int
  type        String   // 'income' | 'expense'
  amount      Decimal
  category    String   // 消费类别
  description String?  // 备注
  date        DateTime
  createdAt   DateTime @default(now())
  user        User     @relation(fields: [userId], references: [id])
  account     Account  @relation(fields: [accountId], references: [id])
}

// 预算表
model Budget {
  id        Int      @id @default(autoincrement())
  userId    Int
  category  String   // 预算类别
  amount    Decimal  // 预算金额
  month     String   // 预算月份(YYYY-MM)
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  user      User     @relation(fields: [userId], references: [id])
}