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use std::string::ToString;

///Suits of standard playing cards
#[derive(Debug, PartialEq)]
pub enum Suit {
    Spades,
    Clubs,
    Diamond,
    Hearts
}

impl ToString for Suit 
{
    fn to_string(&self) -> String 
    {
        format!("{:?}", self)
    }
}

///Model of a standard playing card
#[derive(Debug, PartialEq)]
pub struct StandardCard 
{
    _suit: Suit,
    _value: u8,
}

impl StandardCard
{
	pub fn new(value:u8, suit: Suit) -> StandardCard
	{
		StandardCard{_value:value, _suit: suit}
	}	

	pub fn value(&self) -> u8
	{
		self._value
	}

	pub fn suit(&self) -> &Suit
	{
		&self._suit
	}

	fn value_description(&self) -> String
	{
		match self._value
		{
			0  => String::from("Ace"),
			11 => String::from("Jack"),
			12 => String::from("Queen"),
			13 => String::from("King"),
			14 => String::from("Joker"),
			_  => self._value.to_string()
		}
	}
}

impl ToString for StandardCard 
{
    fn to_string(&self) -> String
    {
		format!("{}, {}",self.value_description(), self._suit.to_string())
    }
}

#[cfg(test)]
mod card_tests
{
	use super::{StandardCard, Suit};

	#[test]
	fn description_test() -> ()
	{
		assert_eq!(StandardCard::new(1, Suit::Hearts).to_string(), "1, Hearts");
	}

	#[test]
	fn jack_description_test() -> ()
	{
		assert_eq!(StandardCard::new(11, Suit::Hearts).to_string(), "Jack, Hearts");
	}

	#[test]
	fn queen_description_test() -> ()
	{
		assert_eq!(StandardCard::new(12, Suit::Hearts).to_string(), "Queen, Hearts");
	}

	#[test]
	fn king_description_test() -> ()
	{
		assert_eq!(StandardCard::new(13, Suit::Hearts).to_string(), "King, Hearts");
	}

	#[test]
	fn ace_description_test() -> ()
	{
		assert_eq!(StandardCard::new(0, Suit::Hearts).to_string(), "Ace, Hearts");
	}

	#[test]
	fn joker_description_test() -> ()
	{
		assert_eq!(StandardCard::new(14, Suit::Hearts).to_string(), "Joker, Hearts");
	}

	#[test]
	fn value_test() -> ()
	{
		assert_eq!(StandardCard::new(1, Suit::Hearts).value(), 1);
	}

	#[test]
	fn suit_test() -> ()
	{
		assert_eq!(StandardCard::new(1, Suit::Hearts).suit(), &Suit::Hearts);
	}
}