use super::builder::{NoCondition, CreatesCondition, RemovesCondition, BothConditions};

#[derive(Clone, Debug, Serialize, Deserialize)]
pub enum SomeCondition {
    #[serde(rename="creates")]
    Creates(CreatesCondition),
    #[serde(rename="removes")]
    Removes(RemovesCondition),
    #[serde(rename="creates_and_removes")]
    Both(BothConditions),
}

impl SomeCondition {
    pub fn should_run(&self) -> bool {
        match self {
            Self::Creates(c) => {
                ! c.0.exists()
            }, Self::Removes(c) => {
                c.0.exists()
            }, Self::Both(c) => {
                ! c.0.0.exists() || c.1.0.exists()
            }
        }
    }
}

impl From<CreatesCondition> for Option<SomeCondition> {
    fn from(c: CreatesCondition) -> Option<SomeCondition> {
        Some(SomeCondition::Creates(c))
    }
}

impl From<RemovesCondition> for Option<SomeCondition> {
    fn from(c: RemovesCondition) -> Option<SomeCondition> {
        Some(SomeCondition::Removes(c))
    }
}

impl From<BothConditions> for Option<SomeCondition> {
    fn from(c: BothConditions) -> Option<SomeCondition> {
        Some(SomeCondition::Both(c))
    }
}

impl From<NoCondition> for Option<SomeCondition> {
    fn from(_c: NoCondition) -> Option<SomeCondition> {
        None
    }
}