extern crate gfx;

use ega;

use ::std;
use std::io::Read;
use std::path::Path;

use self::gfx::tex;

#[repr(C)]
#[derive(Clone, Copy)]
pub struct Tile {
  pub val: u8,
}

pub fn get_tiles<R, F, T>(factory: &mut F) -> (//gfx::handle::Texture<R, T::Surface>,
                                               gfx::handle::ShaderResourceView<R, T::View>)
  where R: gfx::Resources,
        F: gfx::Factory<R>,
        T: gfx::format::TextureFormat {
  let filename = "data/SHAPES.EGA";
  let mut file = std::fs::File::open(Path::new(filename))
    .expect(&format!("failed opening tiles file: {}", filename));
  let mut ega_vec = Vec::new();
  file.read_to_end(&mut ega_vec).expect("Read tiles file");
  let ega_page = ega::decode(&ega_vec, ega::Compression::UNCOMPRESSED, ega::Tiling::TILED(16));
  let tex = factory.create_texture_const_u8::<T>(tex::Kind::D2(16, 16 * 256,
                                                               tex::AaMode::Single),
                                                 &[&ega_page.data])
                   .expect("create tile texture");
  tex.1
}



impl Tile {
  pub fn as_char(&self) -> char {
    match self.val {
      0 => '~', // deep water '🌊'
      1 => '≈', // medium water
      2 => '≋', // shallow water
      3 => ',', // swamp
      4 => '⢊', // plain '░'
      5 => '🌿', // scrub 'წ'
      6 => '🌳', // forest
      7 => '⌓', // hill '∩'
      8 => '⨇', // mountain '△'
      9 => '☗', // dungeon
      10 => '⍟', // city
      11 | 13...15 => '⛫', // castle
      12 => '❖', // village
      22 => '⎔', // tile floor
      23 => '⟗', // bridge
      24 => '⧬', // balloon
      25 => '≃', // bridge top
      26 => '≂', // bridge bottom
      27 => '⍐', // ladder up
      28 => '⍗', // ladder down
      29 => 'v', // ruin
      30 => '◌', // shrine
      31 => '😇', // avatar
      48 => '◯', // column
      49 => '◣', // SW
      50 => '◢', // SE
      51 => '◤', // NW
      52 => '◥', // NE
      53 => '◉', // Mast
      54 => '⎈', // ship's wheel
      55 => 'ფ', // rocks '❍'
      56 => '/', // Lyin down
      57 => '⬛', // stone wall
      58 => '⧯', // '🔒', // locked door
      59 => '⧮', // '🔓', // unlocked door
      60 => '💰', // chest
      61 => '☥', // ankh
      62 => '⨳', // brick floor '⌗'
      63 => '▤', // wood planks '⧻'
      68 => '🌫', // poison field
      69 => '⚡', // energy field
      70 => '🔥', // fire field
      71 => '💤', // sleep field
      72 => '▣', // solid barrier
      73 => '▒', // hidden passage
      75 => '🍖', // spit (rotisserie) '🍳'
      76 => '⌘', // lava
      // 79 => '💥', // attack flash
      // 88 | 89 => 'ጿ', // beggar
      96...121 => ::std::char::from_u32((self.val - 31) as u32).unwrap(),
      122 => '=', // space
      123 => '⊐', // right ''
      124 => '⊏', // left '⊨'
      125 => '▢', // window
      126 => '✨', // space
      127 => '▓', // brick wall
      // 140 | 141 => '🌀', // whirlpool
      189 => '⚔', // phantom 2
      _ =>  panic!("{0}", self.val)
    }
  }
}