# =============================================================================
# Blockchain Service - Production Environment Configuration
# =============================================================================
#
# Deployment: Server B (192.168.1.111)
# Role: Blockchain address derivation, balance queries, transaction monitoring
#
# Responsibilities:
#   - Derive multi-chain addresses from public keys (KAVA, DST, BSC)
#   - Monitor blockchain transactions for deposit detection
#   - Publish WalletAddressCreated events to Kafka
#   - Query wallet balances across supported chains
#
# Flow: mpc-service → blockchain-service → Kafka → identity-service
#       (publicKey)    (derive addresses)  (event)  (save addresses)
#
# Setup:
#   1. Copy to .env: cp .env.example .env
#   2. In Docker Compose mode, most values are overridden by docker-compose.yml
# =============================================================================

# =============================================================================
# Application
# =============================================================================
NODE_ENV=production
PORT=3012
SERVICE_NAME=blockchain-service
API_PREFIX=api/v1

# =============================================================================
# Database (PostgreSQL on Server B)
# =============================================================================
# Docker Compose: postgresql://rwa_user:xxx@postgres:5432/rwa_blockchain
# Direct access:  postgresql://rwa_user:xxx@192.168.1.111:5432/rwa_blockchain
DATABASE_URL=postgresql://rwa_user:your_password@192.168.1.111:5432/rwa_blockchain?schema=public

# =============================================================================
# Redis (on Server B)
# =============================================================================
# Docker Compose: redis / Direct: 192.168.1.111
REDIS_HOST=192.168.1.111
REDIS_PORT=6379
REDIS_DB=11
REDIS_PASSWORD=

# =============================================================================
# Kafka (on Server B)
# =============================================================================
# Docker Compose: kafka:29092 / Direct: 192.168.1.111:9092
KAFKA_BROKERS=192.168.1.111:9092
KAFKA_CLIENT_ID=blockchain-service
KAFKA_GROUP_ID=blockchain-service-group

# =============================================================================
# Blockchain - KAVA (EVM-compatible Cosmos chain)
# =============================================================================
# Official KAVA EVM RPC endpoint
KAVA_RPC_URL=https://evm.kava.io
KAVA_CHAIN_ID=2222
# KAVA USDT contract address
KAVA_USDT_CONTRACT=0x919C1c267BC06a7039e03fcc2eF738525769109c

# =============================================================================
# Blockchain - BSC (Binance Smart Chain)
# =============================================================================
# Public BSC RPC endpoint (consider using paid RPC for production)
BSC_RPC_URL=https://bsc-dataseed.binance.org
BSC_CHAIN_ID=56
# BSC USDT (Binance-Peg) contract address
BSC_USDT_CONTRACT=0x55d398326f99059fF775485246999027B3197955

# =============================================================================
# Blockchain - DST (Cosmos chain, placeholder)
# =============================================================================
# DST_RPC_URL=https://rpc.dst.network
# DST_CHAIN_ID=dst-1

# =============================================================================
# Block Scanner Configuration
# =============================================================================
# Interval between block scans (milliseconds)
BLOCK_SCAN_INTERVAL_MS=5000

# Number of confirmations required before considering transaction final
BLOCK_CONFIRMATIONS_REQUIRED=12

# Maximum blocks to process in one batch
BLOCK_SCAN_BATCH_SIZE=100

# =============================================================================
# MPC Hot Wallet (用于提现转账)
# =============================================================================
# MPC 服务地址
# Docker Compose: http://mpc-service:3013 / Direct: http://192.168.1.111:3013
MPC_SERVICE_URL=http://192.168.1.111:3013

# 热钱包用户名（MPC 系统中的标识，需要预先通过 keygen 创建）
# 示例: system-hot-wallet
HOT_WALLET_USERNAME=system-hot-wallet

# 热钱包地址（从 MPC 公钥派生的 EVM 地址）
# 在 MPC keygen 完成后，从公钥计算得出
# 示例: 0x1234567890abcdef1234567890abcdef12345678
HOT_WALLET_ADDRESS=

# =============================================================================
# Logging
# =============================================================================
# Options: debug, info, warn, error
LOG_LEVEL=info