// NAC跨链桥简化版合约
module cross_chain_bridge;

contract CrossChainBridge {
    storage {
        admin: Address,
        paused: bool,
        request_counter: u64,
    }
    
    constructor(admin_address: Address) {
        self.admin = admin_address;
        self.paused = false;
        self.request_counter = 0;
    }
    
    pub fn pause() -> bool {
        require(msg.sender == self.admin, "Only admin can pause");
        self.paused = true;
        true
    }
    
    pub fn unpause() -> bool {
        require(msg.sender == self.admin, "Only admin can unpause");
        self.paused = false;
        true
    }
    
    pub fn is_paused() -> bool {
        self.paused
    }
    
    pub fn get_request_count() -> u64 {
        self.request_counter
    }
}