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use crate::handle::{Edge, Handle, NodeId};
use crate::handlegraph::HandleGraph;

/// Trait encapsulating the mutable aspects of a handlegraph
/// WIP
pub trait MutableHandleGraph: HandleGraph {
    fn append_handle(&mut self, seq: &[u8]) -> Handle;

    fn create_handle<T: Into<NodeId>>(
        &mut self,
        seq: &[u8],
        node_id: T,
    ) -> Handle;

    fn create_edge(&mut self, edge: &Edge);

    fn divide_handle(
        &mut self,
        handle: Handle,
        offsets: Vec<usize>,
    ) -> Vec<Handle>;

    fn split_handle(
        &mut self,
        handle: Handle,
        offset: usize,
    ) -> (Handle, Handle) {
        let handles = self.divide_handle(handle, vec![offset]);
        (handles[0], handles[1])
    }

    /*

    // this needs some additional functions first, such as reverse complement
    fn apply_orientation(&mut self, handle: &Handle) -> Handle;

    */
}