//! 区块链适配器模块
//! 
//! 提供对不同区块链网络的适配支持

// use std::collections::HashMap;

/// 区块链类型
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum ChainType {
    /// Solana区块链
    Solana,
    /// Ethereum区块链
    Ethereum,
    /// Base区块链
    Base,
    /// 其他EVM兼容链
    EVM,
    /// 测试网络
    Testnet,
}

/// 区块链适配器配置
#[derive(Debug, Clone)]
pub struct BlockchainConfig {
    /// 区块链类型
    pub chain_type: ChainType,
    /// RPC端点URL
    pub rpc_url: String,
    /// 链ID
    pub chain_id: u64,
    /// 网络名称
    pub network_name: String,
    /// 是否启用
    pub enabled: bool,
}

/// 区块链适配器
pub struct BlockchainAdapter {
    /// 配置
    config: BlockchainConfig,
    /// 客户端实例
    client: Option<Box<dyn BlockchainClient>>,
}

/// 区块链客户端trait
pub trait BlockchainClient: Send + Sync {
    /// 获取当前区块高度
    fn get_block_height(&self) -> Result<u64, String>;
    
    /// 获取账户余额
    fn get_balance(&self, address: &str) -> Result<u64, String>;
    
    /// 发送交易
    fn send_transaction(&self, tx_data: &[u8]) -> Result<String, String>;
    
    /// 获取交易状态
    fn get_transaction_status(&self, tx_hash: &str) -> Result<TransactionStatus, String>;
}

/// 交易状态
#[derive(Debug, Clone)]
pub enum TransactionStatus {
    /// 交易已提交
    Pending,
    /// 交易已确认
    Confirmed,
    /// 交易失败
    Failed(String),
    /// 交易不存在
    NotFound,
}

impl BlockchainAdapter {
    /// 创建新的区块链适配器
    pub fn new(config: BlockchainConfig) -> Self {
        Self {
            config,
            client: None,
        }
    }
    
    /// 初始化区块链客户端
    pub fn initialize(&mut self) -> Result<(), String> {
        match self.config.chain_type {
            ChainType::Solana => {
                // 初始化Solana客户端
                // self.client = Some(Box::new(SolanaClient::new(&self.config.rpc_url)?));
                Ok(())
            }
            ChainType::Ethereum | ChainType::Base | ChainType::EVM => {
                // 初始化EVM客户端
                // self.client = Some(Box::new(EVMClient::new(&self.config.rpc_url)?));
                Ok(())
            }
            ChainType::Testnet => {
                // 初始化测试网络客户端
                // self.client = Some(Box::new(TestnetClient::new(&self.config.rpc_url)?));
                Ok(())
            }
        }
    }
    
    /// 获取区块链类型
    pub fn chain_type(&self) -> ChainType {
        self.config.chain_type
    }
    
    /// 获取网络名称
    pub fn network_name(&self) -> &str {
        &self.config.network_name
    }
    
    /// 检查是否已连接
    pub fn is_connected(&self) -> bool {
        self.client.is_some()
    }
}

/// 默认区块链配置
impl Default for BlockchainConfig {
    fn default() -> Self {
        Self {
            chain_type: ChainType::Testnet,
            rpc_url: "http://localhost:8899".to_string(),
            chain_id: 8899,
            network_name: "local-testnet".to_string(),
            enabled: true,
        }
    }
}
