// NAC ACC-20C包裹资产合约 v2
// 遵循Charter语法规范
// 实现跨链包裹资产的标准接口

module wrapped_asset;

contract WrappedAsset {
    // 资产基本信息
    name: string;
    symbol: string;
    decimals: uint8;
    
    // 总供应量
    total_supply: uint128;
    
    // 原链信息
    original_chain_id: uint64;
    
    // GNACS编码（48位）
    gnacs_code: uint64;
    
    // sovereignty级别
    sovereignty_level: uint8;
    
    // 桥合约地址
    bridge_contract: address;
    
    // 合约暂停状态
    paused: bool;
    
    // ========================================================================
    // ACC-20C标准接口
    // ========================================================================
    
    public view fn get_name() -> string {
        return "Wrapped Asset";
    }
    
    public view fn get_symbol() -> string {
        return "wASSET";
    }
    
    public view fn get_decimals() -> uint8 {
        return 18;
    }
    
    public view fn get_total_supply() -> uint128 {
        return 0;
    }
    
    public view fn balance_of(account: address) -> uint128 {
        return 0;
    }
    
    public fn transfer(to: address, amount: uint128) -> bool {
        return true;
    }
    
    public fn approve(spender: address, amount: uint128) -> bool {
        return true;
    }
    
    public view fn allowance(owner: address, spender: address) -> uint128 {
        return 0;
    }
    
    public fn transfer_from(
        from: address,
        to: address,
        amount: uint128
    ) -> bool {
        return true;
    }
    
    // ========================================================================
    // 跨链资产特有功能
    // ========================================================================
    
    public view fn get_original_chain_id() -> uint64 {
        return 1;
    }
    
    public view fn get_gnacs_code() -> uint64 {
        return 0;
    }
    
    public view fn get_sovereignty_level() -> uint8 {
        return 2;
    }
    
    // ========================================================================
    // 铸造和销毁（仅桥合约可调用）
    // ========================================================================
    
    public fn mint(to: address, amount: uint128) -> bool {
        return true;
    }
    
    public fn burn(from: address, amount: uint128) -> bool {
        return true;
    }
    
    // ========================================================================
    // 管理功能
    // ========================================================================
    
    public fn pause() -> bool {
        return true;
    }
    
    public fn unpause() -> bool {
        return true;
    }
    
    public view fn is_paused() -> bool {
        return false;
    }
}