use serde::{Deserialize, Serialize};
use chrono::{DateTime, Utc};

/// 交易签名请求
#[derive(Debug, Deserialize)]
pub struct SignTransactionRequest {
    pub user_id: i64,
    /// 链标识: nac | ethereum | bsc | tron
    pub chain: String,
    /// 待签名的交易数据（Base64编码）
    pub unsigned_tx: String,
    /// 用于解密助记词的密码
    pub decryption_password: String,
    /// 内部API密钥
    pub internal_api_key: String,
}

/// 交易签名响应
#[derive(Debug, Serialize)]
pub struct SignTransactionResponse {
    /// 已签名的交易数据（Base64编码）
    pub signed_tx: String,
    /// 交易哈希（NAC链: 48字节SHA3-384, 其他链: 32字节）
    pub tx_hash: String,
}

/// 转账请求
#[derive(Debug, Deserialize)]
pub struct TransferRequest {
    pub user_id: i64,
    pub chain: String,
    pub to_address: String,
    pub amount: f64,
    pub asset_symbol: String,
    pub decryption_password: String,
    pub internal_api_key: String,
}

/// 交易历史记录
#[derive(Debug, Serialize)]
pub struct TransactionRecord {
    pub id: i64,
    pub tx_hash: Option<String>,
    pub tx_type: String,
    pub from_address: String,
    pub to_address: String,
    pub amount: String,
    pub asset_symbol: String,
    pub fee_amount: String,
    pub fee_currency: String,
    pub status: String,
    pub created_at: DateTime<Utc>,
}