use anyhow::Result;
use std::fs::write;
use std::path::PathBuf;

use structopt::StructOpt;

use subplot::Style;

mod cli;

#[derive(Debug, StructOpt)]
#[structopt(name = "sp-meta", about = "Show Subplot document metadata.")]
struct Opt {
    /// Input subplot document filename
    #[structopt(parse(from_os_str))]
    filename: PathBuf,

    /// Names of embedded files to be extracted.
    #[structopt()]
    embedded: Vec<String>,

    // Set output directory.
    #[structopt(name = "DIR", long = "--directory", short = "-d", parse(from_os_str))]
    directory: PathBuf,
}

fn main() -> Result<()> {
    let opt = Opt::from_args();
    let doc = cli::load_document(&opt.filename, Style::default())?;

    for filename in opt.embedded {
        let file = cli::extract_file(&doc, &filename)?;
        let output = opt.directory.join(filename);
        write(output, file.contents())?;
    }

    Ok(())
}