// 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 = "postgresql"
  url      = env("DATABASE_URL")
}

// ============================================
// 监控地址表
// 存储需要监听充值的地址
// ============================================
model MonitoredAddress {
  id        BigInt @id @default(autoincrement()) @map("address_id")

  chainType String @map("chain_type") @db.VarChar(20) // KAVA, BSC
  address   String @db.VarChar(42) // 0x地址

  userId   BigInt @map("user_id") // 关联用户ID

  isActive Boolean @default(true) @map("is_active") // 是否激活监听

  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  deposits DepositTransaction[]

  @@unique([chainType, address], name: "uk_chain_address")
  @@index([userId], name: "idx_user")
  @@index([chainType, isActive], name: "idx_chain_active")
  @@map("monitored_addresses")
}

// ============================================
// 充值交易表 (Append-Only)
// 记录检测到的所有充值交易
// ============================================
model DepositTransaction {
  id BigInt @id @default(autoincrement()) @map("deposit_id")

  chainType String @map("chain_type") @db.VarChar(20)
  txHash    String @unique @map("tx_hash") @db.VarChar(66)

  fromAddress String @map("from_address") @db.VarChar(42)
  toAddress   String @map("to_address") @db.VarChar(42)

  tokenContract   String  @map("token_contract") @db.VarChar(42) // USDT合约地址
  amount          Decimal @db.Decimal(36, 18) // 原始金额
  amountFormatted Decimal @map("amount_formatted") @db.Decimal(20, 8) // 格式化金额

  blockNumber    BigInt   @map("block_number")
  blockTimestamp DateTime @map("block_timestamp")
  logIndex       Int      @map("log_index")

  // 确认状态
  confirmations Int    @default(0)
  status        String @default("DETECTED") @db.VarChar(20) // DETECTED, CONFIRMING, CONFIRMED, NOTIFIED

  // 关联
  addressId BigInt @map("address_id")
  userId    BigInt @map("user_id")

  // 通知状态
  notifiedAt      DateTime? @map("notified_at")
  notifyAttempts  Int       @default(0) @map("notify_attempts")
  lastNotifyError String?   @map("last_notify_error") @db.Text

  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  monitoredAddress MonitoredAddress @relation(fields: [addressId], references: [id])

  @@index([chainType, status], name: "idx_chain_status")
  @@index([userId], name: "idx_deposit_user")
  @@index([blockNumber], name: "idx_block")
  @@index([status, notifiedAt], name: "idx_pending_notify")
  @@map("deposit_transactions")
}

// ============================================
// 区块扫描检查点 (每条链一条记录)
// 记录扫描进度，用于断点续扫
// ============================================
model BlockCheckpoint {
  id BigInt @id @default(autoincrement()) @map("checkpoint_id")

  chainType String @unique @map("chain_type") @db.VarChar(20)

  lastScannedBlock BigInt   @map("last_scanned_block")
  lastScannedAt    DateTime @map("last_scanned_at")

  // 健康状态
  isHealthy Boolean @default(true) @map("is_healthy")
  lastError String? @map("last_error") @db.Text

  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  @@map("block_checkpoints")
}

// ============================================
// 交易广播请求表
// 记录待广播和已广播的交易
// ============================================
model TransactionRequest {
  id BigInt @id @default(autoincrement()) @map("request_id")

  chainType String @map("chain_type") @db.VarChar(20)

  // 请求来源
  sourceService String @map("source_service") @db.VarChar(50)
  sourceOrderId String @map("source_order_id") @db.VarChar(100)

  // 交易数据
  fromAddress String  @map("from_address") @db.VarChar(42)
  toAddress   String  @map("to_address") @db.VarChar(42)
  value       Decimal @db.Decimal(36, 18)
  data        String? @db.Text // 合约调用数据

  // 签名数据 (由 MPC 服务提供)
  signedTx String? @map("signed_tx") @db.Text

  // 广播结果
  txHash String? @map("tx_hash") @db.VarChar(66)
  status String  @default("PENDING") @db.VarChar(20) // PENDING, SIGNED, BROADCASTED, CONFIRMED, FAILED

  // Gas 信息
  gasLimit BigInt?  @map("gas_limit")
  gasPrice Decimal? @map("gas_price") @db.Decimal(36, 18)
  nonce    Int?

  // 错误信息
  errorMessage String? @map("error_message") @db.Text
  retryCount   Int     @default(0) @map("retry_count")

  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  @@unique([sourceService, sourceOrderId], name: "uk_source_order")
  @@index([chainType, status], name: "idx_tx_chain_status")
  @@index([txHash], name: "idx_tx_hash")
  @@map("transaction_requests")
}

// ============================================
// 区块链事件日志 (Append-Only 审计)
// ============================================
model BlockchainEvent {
  id BigInt @id @default(autoincrement()) @map("event_id")

  eventType String @map("event_type") @db.VarChar(50)

  aggregateId   String @map("aggregate_id") @db.VarChar(100)
  aggregateType String @map("aggregate_type") @db.VarChar(50)

  eventData Json @map("event_data")

  chainType String? @map("chain_type") @db.VarChar(20)
  txHash    String? @map("tx_hash") @db.VarChar(66)

  occurredAt DateTime @default(now()) @map("occurred_at") @db.Timestamp(6)

  @@index([aggregateType, aggregateId], name: "idx_event_aggregate")
  @@index([eventType], name: "idx_event_type")
  @@index([chainType], name: "idx_event_chain")
  @@index([occurredAt], name: "idx_event_occurred")
  @@map("blockchain_events")
}