use std::path::PathBuf;

use argh::FromArgs;

#[derive(FromArgs, PartialEq, Debug)]
#[argh(description = "reid compiler and Virtual Machine")]
pub struct MainOpt {
    #[cfg(feature = "compiler")]
    #[argh(positional, description = "run compiled .reidc from <path>")]
    pub run_path: Option<PathBuf>,

    #[cfg(not(feature = "compiler"))]
    #[argh(positional, description = "run compiled .reidc from <path>")]
    pub run_path: PathBuf,

    #[argh(subcommand)]
    #[cfg(feature = "compiler")]
    pub subcommand: Option<Subcommand>,
}

#[cfg(feature = "compiler")]
#[derive(FromArgs, PartialEq, Debug)]
#[argh(subcommand)]
pub enum Subcommand {
    Compile(Compile),
    Run(Run),
}

#[derive(FromArgs, PartialEq, Debug)]
#[argh(
    subcommand,
    name = "compile",
    description = "compile <source> to .reidc to <output> path"
)]
pub struct Compile {
    #[argh(positional, description = "source .reid path")]
    pub source: String,
    #[argh(positional, description = "output .reidc path")]
    pub output: Option<String>,
}

#[derive(FromArgs, PartialEq, Debug)]
#[argh(
    subcommand,
    name = "run",
    description = "compile and run given .reid file"
)]
pub struct Run {
    #[argh(positional, description = "source .reid path")]
    pub source: PathBuf,
}