use clap::{Parser, Subcommand};

#[derive(Parser, Clone)]
#[command(name = "nac")]
#[command(version = "1.0.0")]
#[command(about = "NAC区块链命令行工具", long_about = None)]
#[command(author = "NAC Team")]
pub struct Cli {
    #[command(subcommand)]
    pub command: Commands,

    /// 输出格式 (json, yaml, table)
    #[arg(long, short = 'o', default_value = "table", global = true)]
    pub output: String,

    /// 详细输出
    #[arg(long, short = 'v', global = true)]
    pub verbose: bool,

    /// RPC节点地址
    #[arg(long, global = true)]
    pub rpc_url: Option<String>,
}

#[derive(Subcommand, Clone)]
pub enum Commands {
    /// 账户管理
    #[command(subcommand)]
    Account(AccountCommands),

    /// 交易管理
    #[command(subcommand, alias = "tx")]
    Transaction(TransactionCommands),

    /// 合约管理
    #[command(subcommand)]
    Contract(ContractCommands),

    /// 宪法查询
    #[command(subcommand)]
    Constitution(ConstitutionCommands),

    /// 节点管理
    #[command(subcommand)]
    Node(NodeCommands),

    /// 区块查询
    #[command(subcommand)]
    Block(BlockCommands),

    /// 配置管理
    #[command(subcommand)]
    Config(ConfigCommands),

    /// 工具功能
    #[command(subcommand)]
    Utils(UtilsCommands),
}

#[derive(Subcommand, Clone)]
pub enum AccountCommands {
    /// 创建新账户
    Create {
        /// 账户密码
        #[arg(long)]
        password: Option<String>,
    },

    /// 列出所有账户
    List,

    /// 查看账户详情
    Show {
        /// 账户地址
        address: String,
    },

    /// 导入账户
    Import {
        /// 私钥（十六进制）
        #[arg(long)]
        private_key: String,

        /// 账户密码
        #[arg(long)]
        password: Option<String>,
    },

    /// 导出账户私钥
    Export {
        /// 账户地址
        address: String,

        /// 账户密码
        #[arg(long)]
        password: Option<String>,
    },

    /// 查询账户余额
    Balance {
        /// 账户地址
        address: String,
    },
}

#[derive(Subcommand, Clone)]
pub enum TransactionCommands {
    /// 发送交易
    Send {
        /// 发送方地址
        from: String,

        /// 接收方地址
        to: String,

        /// 金额
        amount: String,

        /// Gas限制
        #[arg(long)]
        gas_limit: Option<u64>,

        /// Gas价格
        #[arg(long)]
        gas_price: Option<u64>,
    },

    /// 查看交易详情
    Show {
        /// 交易哈希
        tx_hash: String,
    },

    /// 列出交易历史
    List {
        /// 账户地址
        address: String,

        /// 限制数量
        #[arg(long, default_value = "10")]
        limit: usize,
    },

    /// 签名交易
    Sign {
        /// 交易文件路径
        tx_file: String,

        /// 私钥
        #[arg(long)]
        private_key: String,
    },

    /// 广播已签名交易
    Broadcast {
        /// 已签名交易（十六进制）
        signed_tx: String,
    },
}

#[derive(Subcommand, Clone)]
pub enum ContractCommands {
    /// 部署合约
    Deploy {
        /// WASM文件路径
        wasm_file: String,

        /// 部署者地址
        #[arg(long)]
        from: String,

        /// 初始化参数（JSON）
        #[arg(long)]
        init_args: Option<String>,
    },

    /// 调用合约方法
    Call {
        /// 合约地址
        address: String,

        /// 方法名
        method: String,

        /// 参数（JSON数组）
        #[arg(long)]
        args: Option<String>,

        /// 调用者地址
        #[arg(long)]
        from: String,
    },

    /// 查询合约状态
    Query {
        /// 合约地址
        address: String,

        /// 方法名
        method: String,

        /// 参数（JSON数组）
        #[arg(long)]
        args: Option<String>,
    },

    /// 查看合约代码
    Code {
        /// 合约地址
        address: String,
    },
}

#[derive(Subcommand, Clone)]
pub enum ConstitutionCommands {
    /// 列出所有宪法条款
    List,

    /// 查看条款详情
    Show {
        /// 条款ID
        clause_id: String,
    },

    /// 验证条款状态
    Verify {
        /// 条款ID
        clause_id: String,
    },

    /// 查看条款参数
    Params {
        /// 条款ID
        clause_id: String,
    },
}

#[derive(Subcommand, Clone)]
pub enum NodeCommands {
    /// 查看节点信息
    Info,

    /// 查看节点状态
    Status,

    /// 查看对等节点
    Peers,

    /// 查看同步状态
    Sync,
}

#[derive(Subcommand, Clone)]
pub enum BlockCommands {
    /// 查看区块详情
    Show {
        /// 区块高度或哈希
        block_id: String,
    },

    /// 查看最新区块
    Latest,

    /// 列出区块
    List {
        /// 起始高度
        #[arg(default_value = "0")]
        start: u64,

        /// 结束高度（可选）
        end: Option<u64>,

        /// 限制数量
        #[arg(long, default_value = "10")]
        limit: usize,
    },
}

#[derive(Subcommand, Clone)]
pub enum ConfigCommands {
    /// 初始化配置
    Init,

    /// 显示当前配置
    Show,

    /// 设置配置项
    Set {
        /// 配置键
        key: String,

        /// 配置值
        value: String,
    },

    /// 获取配置项
    Get {
        /// 配置键
        key: String,
    },
}

#[derive(Subcommand, Clone)]
pub enum UtilsCommands {
    /// 生成密钥对
    Keygen,

    /// 计算哈希
    Hash {
        /// 数据（十六进制或字符串）
        data: String,
    },

    /// GNACS编码
    Encode {
        /// 数据
        data: String,
    },

    /// GNACS解码
    Decode {
        /// GNACS编码（48位二进制）
        gnacs: String,
    },
}