use std::fs::DirBuilder;
use std::io::Write;
use std::{collections::HashMap, fs, io::BufWriter};

use anyhow::{anyhow, Context, Result};
use endcap_sl_software_ri_generator::{generator::CodeGen, types};
use itertools::Itertools;

fn main() -> Result<()> {
    env_logger::init();

    println!("Hello, world!");
    let xmlfile = fs::read_to_string("./csr.xml")?;
    let doc = roxmltree::Document::parse_with_options(
        &xmlfile,
        roxmltree::ParsingOptions {
            allow_dtd: true,
            nodes_limit: u32::MAX,
        },
    )?;
    // println!("Parsed: {:#?}", doc);
    // println!("Root: {:?}", doc.root_element());

    let register_map = types::Module::from_xml_dom(doc.root_element())?;
    println!("read: {:#?}", register_map);

    println!("===========================================");

    let files = register_map.generate_register_interface(None, None, HashMap::new())?;
    // println!("{:#?}", files);
    for filepath in files.keys().sorted() {
        println!("{}", filepath.display());
    }
    if !std::fs::read_dir("register_interface")
        .context("register_interface not found")?
        .collect_vec()
        .is_empty()
    {
        return Err(anyhow!("dir out is not empty"));
    };
    for (file, code) in files {
        DirBuilder::new()
            .recursive(true)
            .create(file.parent().context("no parent")?)?;
        let file = fs::OpenOptions::new()
            .create(true)
            .truncate(true)
            .write(true)
            .open(file)
            .context("opening file")?;
        let mut writer = BufWriter::new(file);
        write!(writer, "{}", code)?;
    }

    Ok(())
}