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//! Job role types

use errors::UnknownVariant;

use std::fmt::{Display, Formatter, Result as FmtResult};
use std::str::FromStr;

/// The roles available in the game.
///
/// Each [`Job`] has a role attached to it.
///
/// [`Job`]: ::jobs::Job
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
#[cfg_attr(feature = "with_serde", derive(Serialize, Deserialize))]
pub enum Role {
    Dps,
    Healer,
    Tank,
}

impl Role {
    #[cfg(feature = "all_const")]
    pub const ALL: [Role; 3] = [Role::Dps, Role::Healer, Role::Tank];

    pub fn as_str(&self) -> &'static str {
        match *self {
            Role::Dps => "Dps",
            Role::Healer => "Healer",
            Role::Tank => "Tank",
        }
    }

    pub fn name(&self) -> &'static str {
        match *self {
            Role::Dps => "DPS",
            Role::Healer => "Healer",
            Role::Tank => "Tank",
        }
    }
}

impl FromStr for Role {
    type Err = UnknownVariant;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        let role = match s.to_lowercase().as_str() {
            "dps" => Role::Dps,
            "healer" => Role::Healer,
            "tank" => Role::Tank,
            _ => return Err(UnknownVariant("Role", s.into()))
        };

        Ok(role)
    }
}

impl Display for Role {
    fn fmt(&self, f: &mut Formatter) -> FmtResult {
        write!(f, "{}", self.name())
    }
}