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use crate::Id;

#[derive(Debug, Fail)]
pub enum AddViewError {
    #[fail(display = "some error occured")]
    GenericError {},
}

#[derive(Debug, Fail)]
pub enum RemoveViewError {
    #[fail(display = "invalid id given, cannot be removed: {}", id)]
    InvalidId { id: Id },

    #[fail(display = "id has no parent, cannot be removed: {}", id)]
    NoParent { id: Id },

    #[fail(display = "something broke, oh no ")]
    Generic {},
}

#[derive(Debug, Fail)]
pub enum SwitchError {
    #[fail(display = "node {} has no parent to be switched to from {}", from, to)]
    NoParent { from: Id, to: Id },

    #[fail(display = "error while switching, figuring out...")]
    Failed {},
}

impl std::convert::From<indextree::NodeError> for SwitchError {
    fn from(_error: indextree::NodeError) -> Self {
        SwitchError::Failed {}
    }
}

impl std::convert::From<failure::Error> for RemoveViewError {
    fn from(_error: failure::Error) -> Self {
        RemoveViewError::Generic {}
    }
}

impl std::convert::From<failure::Error> for AddViewError {
    fn from(_error: failure::Error) -> Self {
        AddViewError::GenericError {}
    }
}