use clap::{Parser, Subcommand};

#[derive(Parser, Debug)]
#[command(author, version, about, long_about = None)]
pub struct Args {
    /// Port address of ec data
    #[arg(short, long, value_parser = clap_num::maybe_hex::<u16>)]
    pub data_address: u16,

    /// Port address of ec cmd
    #[arg(short, long, value_parser = clap_num::maybe_hex::<u16>)]
    pub cmd_address: u16,

    /// Use 16-bit addresses instead of 8-bit
    #[arg(short, long)]
    pub extended: bool,

    /// Operation to perform
    #[command(subcommand)]
    pub op: Operation,
}

impl Args {
    pub fn load() -> Self {
        Self::parse()
    }
}

#[derive(Subcommand, Debug)]
pub enum Operation {
    /// Read whole address space, printing values
    ReadAll,
    /// Read a specific address
    Read {
        /// Address of embedded controller to read from
        #[arg(value_parser = clap_num::maybe_hex::<u16>)]
        address: u16,
    },
    /// Write a pattern to the whole address space
    WritePattern {
        // TODO
    },
    /// Write a value to a specific address
    Write {
        /// Address of embedded controller to write
        #[arg(value_parser = clap_num::maybe_hex::<u16>)]
        address: u16,

        /// Value to write
        #[arg(value_parser = clap_num::maybe_hex::<u8>)]
        value: u8,
    },
}