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#![cfg_attr(docsrs, feature(doc_cfg))]
#![warn(missing_docs)]
// #![cfg_attr(docsrs, warn(rustdoc::missing_doc_code_examples))]
#![cfg_attr(docsrs, warn(rustdoc::invalid_codeblock_attributes))]
#![allow(dead_code)]

//! Provides Hex Codes for colours:
//! - enums that return a hex code string for named colours
//! - rgb colour struct to configure a colour an rgb colour and display as decimal or hex
//!
//! ## Examples
//!
//! ### Use Basic colour
//!
//!```
//! use named_colour::Basic;
//! println!("The colour Hex Code is: {} for the RGB colour Aqua: {}",
//!     Basic::Aqua,
//!     Basic::Aqua.as_rgb()
//! );
//!```
//!
//! ### Use Extended colour
//!
//! Enable the feature in the toml file:
//!
//!```toml
//![dependencies]
//!named_colour = {version = "0.1.0", features = ["extended"]}
//!```
//!
//!```
//! use named_colour::ext::Indigo;
//! println!("The colour Hex Code is: {} for the RGB colour Dark Orchid: {}",
//!     Indigo::DarkOrchid,
//!     Indigo::DarkOrchid.as_rgb()
//! );
//!```
//!
//! ### Create a custom colour
//!
//!```
//! use named_colour::ColourRgb;
//! let my_colour =ColourRgb::new(12,24,48);
//! println!("The Hex Code is: {} for my_colour: {}",
//!     my_colour.as_hex(),
//!     my_colour.to_string()
//! );
//!```
//!
//! ## Features
//! - Basic contains just 16 colours with 18 names (default)
//! - Extended contains a fuller set of colours divided in 11 collections
//!
//! To use the extended colour set only configure toml with no-default features
//!
//!```toml
//![dependencies]
//!named_colour = {version = "0.1.0", default_features = false, features = ["extended"]}
//!```
//!

#[cfg(feature = "basic")]
mod basic;
#[cfg(feature = "extended")]
#[allow(missing_docs)]
pub mod ext;
mod rgb;

pub use basic::Basic;
pub use rgb::ColourRgb;

pub(crate) fn to_rgb(hex: &str) -> String {
    let mut no_error = true;
    let starts_with_hash = &hex[0..1] == "#";
    let red = u8::from_str_radix(&hex[1..3], 16).unwrap_or_else(|_| {
        no_error = false;
        0
    });
    let green = u8::from_str_radix(&hex[3..5], 16).unwrap_or_else(|_| {
        no_error = false;
        0
    });
    let blue = u8::from_str_radix(&hex[5..7], 16).unwrap_or_else(|_| {
        no_error = false;
        0
    });
    if starts_with_hash && no_error {
        format!("({},{},{})", red, green, blue,)
    } else {
        "Invalid Hex Code".to_string()
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn convert_to_rgb() {
        assert_eq!("(192,192,192)", to_rgb(&Basic::Silver.to_string()))
    }

    #[test]
    fn returns_invalid_string_message_on_bad_input() {
        assert_eq!("Invalid Hex Code", to_rgb("#QWERTY"))
    }
}