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

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

// ============================================
// 认种订单表 (状态表)
// ============================================
model PlantingOrder {
  id      BigInt @id @default(autoincrement()) @map("order_id")
  orderNo String @unique @map("order_no") @db.VarChar(50)
  userId  BigInt @map("user_id")

  // 认种信息
  treeCount   Int     @map("tree_count")
  totalAmount Decimal @map("total_amount") @db.Decimal(20, 8)

  // 省市选择 (不可修改)
  selectedProvince        String?   @map("selected_province") @db.VarChar(10)
  selectedCity            String?   @map("selected_city") @db.VarChar(10)
  provinceCitySelectedAt  DateTime? @map("province_city_selected_at")
  provinceCityConfirmedAt DateTime? @map("province_city_confirmed_at")

  // 订单状态
  status String @default("CREATED") @map("status") @db.VarChar(30)

  // 底池信息
  poolInjectionBatchId       BigInt?   @map("pool_injection_batch_id")
  poolInjectionScheduledTime DateTime? @map("pool_injection_scheduled_time")
  poolInjectionActualTime    DateTime? @map("pool_injection_actual_time")
  poolInjectionTxHash        String?   @map("pool_injection_tx_hash") @db.VarChar(100)

  // 挖矿
  miningEnabledAt DateTime? @map("mining_enabled_at")

  // 时间戳
  createdAt       DateTime  @default(now()) @map("created_at")
  paidAt          DateTime? @map("paid_at")
  fundAllocatedAt DateTime? @map("fund_allocated_at")
  updatedAt       DateTime  @updatedAt @map("updated_at")

  // 关联
  fundAllocations FundAllocation[]
  batch           PoolInjectionBatch? @relation(fields: [poolInjectionBatchId], references: [id])

  @@index([userId])
  @@index([orderNo])
  @@index([status])
  @@index([poolInjectionBatchId])
  @@index([selectedProvince, selectedCity])
  @@index([createdAt])
  @@index([paidAt])
  @@map("planting_orders")
}

// ============================================
// 资金分配明细表 (行为表, append-only)
// ============================================
model FundAllocation {
  id      BigInt @id @default(autoincrement()) @map("allocation_id")
  orderId BigInt @map("order_id")

  // 分配信息
  targetType      String  @map("target_type") @db.VarChar(50)
  amount          Decimal @map("amount") @db.Decimal(20, 8)
  targetAccountId String? @map("target_account_id") @db.VarChar(100)

  // 元数据
  metadata Json? @map("metadata")

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

  // 关联
  order PlantingOrder @relation(fields: [orderId], references: [id])

  @@index([orderId])
  @@index([targetType, targetAccountId])
  @@index([createdAt])
  @@map("fund_allocations")
}

// ============================================
// 用户持仓表 (状态表)
// ============================================
model PlantingPosition {
  id     BigInt @id @default(autoincrement()) @map("position_id")
  userId BigInt @unique @map("user_id")

  // 持仓统计
  totalTreeCount     Int @default(0) @map("total_tree_count")
  effectiveTreeCount Int @default(0) @map("effective_tree_count")
  pendingTreeCount   Int @default(0) @map("pending_tree_count")

  // 挖矿状态
  firstMiningStartAt DateTime? @map("first_mining_start_at")

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

  // 关联
  distributions PositionDistribution[]

  @@index([userId])
  @@index([totalTreeCount])
  @@map("planting_positions")
}

// ============================================
// 持仓省市分布表
// ============================================
model PositionDistribution {
  id     BigInt @id @default(autoincrement()) @map("distribution_id")
  userId BigInt @map("user_id")

  // 省市信息
  provinceCode String? @map("province_code") @db.VarChar(10)
  cityCode     String? @map("city_code") @db.VarChar(10)

  // 数量
  treeCount Int @default(0) @map("tree_count")

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

  // 关联
  position PlantingPosition @relation(fields: [userId], references: [userId])

  @@unique([userId, provinceCode, cityCode])
  @@index([userId])
  @@index([provinceCode])
  @@index([cityCode])
  @@map("position_province_city_distribution")
}

// ============================================
// 底池注入批次表 (状态表)
// ============================================
model PoolInjectionBatch {
  id      BigInt @id @default(autoincrement()) @map("batch_id")
  batchNo String @unique @map("batch_no") @db.VarChar(50)

  // 批次时间窗口 (5天)
  startDate DateTime @map("start_date") @db.Date
  endDate   DateTime @map("end_date") @db.Date

  // 统计信息
  orderCount  Int     @default(0) @map("order_count")
  totalAmount Decimal @default(0) @map("total_amount") @db.Decimal(20, 8)

  // 注入状态
  status                 String    @default("PENDING") @map("status") @db.VarChar(20)
  scheduledInjectionTime DateTime? @map("scheduled_injection_time")
  actualInjectionTime    DateTime? @map("actual_injection_time")
  injectionTxHash        String?   @map("injection_tx_hash") @db.VarChar(100)

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

  // 关联
  orders PlantingOrder[]

  @@index([batchNo])
  @@index([startDate, endDate])
  @@index([status])
  @@index([scheduledInjectionTime])
  @@map("pool_injection_batches")
}

// ============================================
// 认种事件表 (行为表, append-only)
// ============================================
model PlantingEvent {
  id        BigInt @id @default(autoincrement()) @map("event_id")
  eventType String @map("event_type") @db.VarChar(50)

  // 聚合根信息
  aggregateId   String @map("aggregate_id") @db.VarChar(100)
  aggregateType String @map("aggregate_type") @db.VarChar(50)

  // 事件数据
  eventData Json @map("event_data")

  // 元数据
  userId     BigInt?  @map("user_id")
  occurredAt DateTime @default(now()) @map("occurred_at")
  version    Int      @default(1) @map("version")

  @@index([aggregateType, aggregateId])
  @@index([eventType])
  @@index([userId])
  @@index([occurredAt])
  @@map("planting_events")
}

// ============================================
// Outbox 事件发件箱表 (Outbox Pattern)
// 保证事件发布的可靠性：
// 1. 业务数据和 Outbox 记录在同一个事务中写入
// 2. 后台任务轮询 Outbox 表并发布到 Kafka
// 3. 发布成功后标记为已处理
// ============================================
model OutboxEvent {
  id BigInt @id @default(autoincrement()) @map("outbox_id")

  // 事件信息
  eventType String @map("event_type") @db.VarChar(100)
  topic     String @map("topic") @db.VarChar(100)
  key       String @map("key") @db.VarChar(200)
  payload   Json   @map("payload")

  // 聚合根信息 (用于幂等性检查)
  aggregateId   String @map("aggregate_id") @db.VarChar(100)
  aggregateType String @map("aggregate_type") @db.VarChar(50)

  // 发布状态
  status     String  @default("PENDING") @map("status") @db.VarChar(20) // PENDING, PUBLISHED, FAILED
  retryCount Int     @default(0) @map("retry_count")
  maxRetries Int     @default(5) @map("max_retries")
  lastError  String? @map("last_error") @db.Text

  // 时间戳
  createdAt   DateTime  @default(now()) @map("created_at")
  publishedAt DateTime? @map("published_at")
  nextRetryAt DateTime? @map("next_retry_at")

  @@index([status, createdAt])
  @@index([status, nextRetryAt])
  @@index([aggregateType, aggregateId])
  @@index([topic])
  @@map("outbox_events")
}

// ============================================
// 支付补偿表 (用于处理支付失败需要补偿的订单)
// 当订单支付过程中发生以下情况时创建补偿记录:
// 1. 资金已冻结/扣款但数据库事务失败
// 2. 数据库事务成功但确认扣款失败
// 3. 确认扣款成功但资金分配失败
// ============================================
model PaymentCompensation {
  id      BigInt @id @default(autoincrement()) @map("compensation_id")
  orderNo String @map("order_no") @db.VarChar(50)
  userId  BigInt @map("user_id")

  // 补偿类型
  compensationType String @map("compensation_type") @db.VarChar(50) // UNFREEZE, REFUND, RETRY_CONFIRM, RETRY_ALLOCATE

  // 金额信息
  amount Decimal @map("amount") @db.Decimal(20, 8)

  // 状态
  status String @default("PENDING") @map("status") @db.VarChar(20) // PENDING, PROCESSING, COMPLETED, FAILED

  // 失败信息
  failureReason String? @map("failure_reason") @db.Text
  failureStage  String? @map("failure_stage") @db.VarChar(50) // FREEZE, DB_TRANSACTION, CONFIRM, ALLOCATE

  // 重试信息
  retryCount  Int       @default(0) @map("retry_count")
  maxRetries  Int       @default(5) @map("max_retries")
  nextRetryAt DateTime? @map("next_retry_at")
  lastError   String?   @map("last_error") @db.Text

  // 时间戳
  createdAt   DateTime  @default(now()) @map("created_at")
  processedAt DateTime? @map("processed_at")
  completedAt DateTime? @map("completed_at")

  @@unique([orderNo, compensationType])
  @@index([status, nextRetryAt])
  @@index([userId])
  @@index([orderNo])
  @@index([createdAt])
  @@map("payment_compensations")
}