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// lib.rs for anpub
// lib annotation, test, pub

/*
  create lib project
  $ cargo new anpub --lib --vcs none

  use release build profile
  $ cargo build --releasea

  use dev build profile
  $ cargo build

  Cargo.toml file
  [profile.dev]
  opt-levelb = 0
  [profile.release]
  opt-level = 3

  show document
  $ cargo doc --open
*/

//! # anpub crate
//!
//! `anpub` is a collection of utilities to make performing certain
//! calculations more convenient, and modeling artistic concepts.

pub use self::kinds::PrimaryColor;
pub use self::kinds::SecondaryColor;
pub use self::utils::mix;

/// Adds one to the number given.
///
/// # Examples
///
/// ```
/// let arg = 5;
/// let ans = anpub::add_one(arg);
///
/// assert_eq!(6, ans);
/// ```
pub fn add_one(x: i32) -> i32 {
  x + 1
}

pub mod kinds {
  /// The primary colors according to the RYB color model.
  #[derive(Debug)]
  pub enum PrimaryColor {
    Red, 
    Yellow,
    Blue,
  }

  /// The secondary colors according to the RYB color model.
  #[derive(Debug)]
  pub enum SecondaryColor {
    Orange,
    Green,
    Purple,
  }
}

pub mod utils {
  use crate::kinds::*;
  
  /// Combines two primary colors in equal amounts to create
  /// a secondary color.
  pub fn mix(_c1: PrimaryColor, _c2: PrimaryColor) -> SecondaryColor {
    crate::kinds::SecondaryColor::Purple
  }
}

#[cfg(test)]
mod tests {
    #[test]
    fn test_add_one() {
      use super::*;
      assert_eq!(3 + 1, add_one(3));
    }
}