use maraiah::durandal::{chunk::*, err::*, image::Image};
use maraiah::marathon::{map, pict, term, wad};
use memmap::Mmap;
use std::{io, io::Write, fs, env};

fn write_ppm(fname: &str, im: &Image) -> io::Result<()>
{
   let     out = fs::File::create(fname)?;
   let mut out = io::BufWriter::new(out);

   write!(&mut out, "P3\n{} {}\n255\n", im.w(), im.h())?;

   for y in 0..im.h() {
      for x in 0..im.w() {
         let cr = &im[(x, y)];
         write!(&mut out, "{} {} {} ", cr.r, cr.g, cr.b)?;
      }
   }

   Ok(())
}

fn main() -> ResultS<()>
{
   let arg = env::args().nth(1).expect("need at least 1 argument");
   let  fp = fs::File::open(arg)?;
   let  mm = unsafe{Mmap::map(&fp)?};
   let wad = wad::Wad::new(&mm)?;

   println!("{:#?}", wad);

   for (id, ent) in wad.entries {
      if let Some(b) = ent.chunks.get(b"PICT") {
         let im = pict::load_pict(b)?;
         println!("entry {} has PICT {}x{}", id, im.w(), im.h());
         write_ppm(&format!("out_{}.ppm", id), &im)?;
      }

      if let Some(b) = ent.chunks.get(b"Minf") {
         let minf = map::Minf::chunk(b)?;
         println!("entry {} has {:#?}", id, minf);
      }

      if let Some(b) = ent.chunks.get(b"EPNT") {
         let epnt = map::Endpoint::chunk(b)?;
         println!("entry {} has EPNT {:#?}", id, epnt);
      }

      if let Some(b) = ent.chunks.get(b"PNTS") {
         let epnt = map::Point::chunk(b)?;
         println!("entry {} has PNTS {:#?}", id, epnt);
      }

      if let Some(b) = ent.chunks.get(b"LINS") {
         let line = map::Line::chunk(b)?;
         println!("entry {} has LINS {:#?}", id, line);
      }

      if let Some(b) = ent.chunks.get(b"SIDS") {
         let line = map::Side::chunk(b)?;
         println!("entry {} has SIDS {:#?}", id, line);
      }

      if let Some(b) = ent.chunks.get(b"term") {
         let term = term::Terminal::chunk(b)?;
         println!("entry {} has term {:#?}", id, term);
      }
   }

   Ok(())
}

// EOF