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extern crate loe;

use std::io::Cursor;
use radix_fmt::radix_36;
use loe::{process, Config, TransformMode};

pub mod avatar;
pub mod colour;
pub mod dialogue;
pub mod ending;
pub mod exit;
pub mod game;
pub mod image;
pub mod item;
pub mod mock;
pub mod palette;
pub mod position;
pub mod room;
pub mod sprite;
pub mod text;
pub mod tile;
pub mod variable;

use avatar::Avatar;
use colour::Colour;
use dialogue::Dialogue;
use ending::Ending;
use exit::{Exit, Transition};
use game::{Game, Version};
use image::Image;
use item::Item;
use palette::Palette;
use position::Position;
use room::Room;
use sprite::Sprite;
use std::fmt::Display;
use text::{Font, TextDirection};
use tile::Tile;
use variable::Variable;

#[derive(Debug, Eq, PartialEq)]
pub struct Instance {
    position: Position,
    id: String, // item / ending.rs id
}

#[derive(Debug, Eq, PartialEq)]
pub struct ExitInstance {
    position: Position,
    exit: Exit,
}

pub trait AnimationFrames {
    fn to_string(&self) -> String;
}

impl AnimationFrames for Vec<Image> {
    #[inline]
    fn to_string(&self) -> String {
        let mut string = String::new();
        let last_frame = self.len() - 1;

        for (i, frame) in self.into_iter().enumerate() {
            string.push_str(&frame.to_string());

            if i < last_frame {
                string.push_str(&"\n>\n".to_string());
            }
        }

        string
    }
}

fn from_base36(str: &str) -> u64 {
    u64::from_str_radix(str, 36).unwrap()
}

/// this doesn't work inside ToBase36 for some reason
fn to_base36(int: u64) -> String {
    format!("{}", radix_36(int))
}

pub trait ToBase36 {
    fn to_base36(&self) -> String;
}

impl ToBase36 for u64 {
    fn to_base36(&self) -> String {
        to_base36(*self)
    }
}

/// e.g. `\nNAME DLG_0`
fn optional_data_line<T: Display>(label: &str, item: Option<T>) -> String {
    if item.is_some() {
        format!("\n{} {}", label, item.unwrap())
    } else {
        "".to_string()
    }
}

fn transform_line_endings(input: String, mode: TransformMode) -> String {
    let mut input = Cursor::new(input);
    let mut output = Cursor::new(Vec::new());

    process(&mut input, &mut output, Config::default().transform(mode)).unwrap();
    String::from_utf8(output.into_inner()).unwrap()
}

#[cfg(test)]
mod test {
    use crate::{from_base36, ToBase36, optional_data_line, mock};

    #[test]
    fn test_from_base36() {
        assert_eq!(from_base36("0"), 0);
        assert_eq!(from_base36("0z"), 35);
        assert_eq!(from_base36("11"), 37);
    }

    #[test]
    fn test_to_base36() {
        assert_eq!((37 as u64).to_base36(), "11");
    }

    #[test]
    fn test_optional_data_line() {
        let output = optional_data_line("NAME", mock::item().name);
        assert_eq!(output, "\nNAME door".to_string());
    }
}