#![feature(rustc_macro)]
#[macro_use] extern crate serde_derive;
extern crate serde_json;

extern crate regex;
extern crate yaml_rust;

extern crate walkdir;
use walkdir::{WalkDir, DirEntry};

use std::io::prelude::*;
use std::fs::File;
use std::env;
use std::path::Path;
use std::sync::{Arc, Mutex};
use std::thread;

mod pre_process;
mod section;

mod character;
use character::Character;

mod tags;
mod dl_list;
mod tiles;

static MAX_THREADS: u32 = 12;

fn main() {
    let raw_files = env::var("RAW_FILES").unwrap_or("characters".into());
    let out_files = env::var("OUT").unwrap_or("json".into());
    let base_path = Path::new(&raw_files);
    let out_path = Path::new(&out_files);


    
    let files: Arc<Mutex<Vec<DirEntry>>> = Arc::new(Mutex::new(WalkDir::new(base_path).min_depth(1).into_iter().filter_map(|e| e.ok()).collect()));

    for 1..MAX_THREADS {

        std::thread(move || {
            let entry: Option<DirEntry> = None;
            {
                entry = files.lock().unwrap().pop();

                if entry.is_none() {
                    println!("thread finished");
                    return;
                }
            }
            let entry = entry.unwrap();
            
            let mut f = File::open(entry.path()).expect("could not open file");
            let mut buf = String::new();
            if let Err(_) = f.read_to_string(&mut buf) {
                println!("invalid file: {}", entry.path().to_str().unwrap());
                continue;
            }

            let buf = pre_process::strip_irrelevant_content(&buf);

            let mut char = Character::new();
            char.parse(&buf);

            let json = serde_json::to_string(&char).unwrap();

            let out_file = out_path.join(entry.file_name().to_str().unwrap().replace("html", "json"));
            let mut o = File::create(&out_file).unwrap();
            o.write_all(json.as_bytes()).unwrap();
            println!("{:?}", out_file);
        });
    }
}