use std::fmt::Debug;
use std::sync::Arc;

use indexmap::IndexMap;

use crate::static_data::DataLibrary;
use crate::static_data::MoveData;
use crate::{StringKey, ValueIdentifiable, ValueIdentifier};

/// A library to store all data for moves.
pub trait MoveLibrary: DataLibrary<dyn MoveData> + ValueIdentifiable + Debug {}

/// A library to store all data for moves.
#[derive(Debug)]
pub struct MoveLibraryImpl {
    /// A unique identifier so we know what value this is.
    identifier: ValueIdentifier,
    /// The underlying map.
    map: IndexMap<StringKey, Arc<dyn MoveData>>,
}

impl MoveLibraryImpl {
    /// Instantiates a new Move Library.
    pub fn new(capacity: usize) -> Self {
        Self {
            identifier: Default::default(),
            map: IndexMap::with_capacity(capacity),
        }
    }
}

impl MoveLibrary for MoveLibraryImpl {}

impl DataLibrary<dyn MoveData> for MoveLibraryImpl {
    fn map(&self) -> &IndexMap<StringKey, Arc<dyn MoveData>> {
        &self.map
    }
    fn get_modify(&mut self) -> &mut IndexMap<StringKey, Arc<dyn MoveData>> {
        &mut self.map
    }
}

impl ValueIdentifiable for MoveLibraryImpl {
    fn value_identifier(&self) -> ValueIdentifier {
        self.identifier
    }
}

#[cfg(test)]
pub mod tests {
    use hashbrown::HashSet;
    use std::sync::Arc;

    use crate::static_data::libraries::data_library::DataLibrary;
    use crate::static_data::libraries::move_library::MoveLibrary;
    use crate::static_data::{MoveCategory, MoveDataImpl, MoveLibraryImpl, MoveTarget};
    use crate::StringKey;

    fn build_move() -> MoveDataImpl {
        MoveDataImpl::new(
            &"foo".into(),
            0.into(),
            MoveCategory::Physical,
            100,
            100,
            30,
            MoveTarget::Any,
            0,
            None,
            HashSet::new(),
        )
    }

    pub fn build() -> Box<dyn MoveLibrary> {
        let mut lib = MoveLibraryImpl::new(1);
        let m = build_move();
        // Borrow as mut so we can insert
        let w = &mut lib;
        w.add(&StringKey::new("foo"), Arc::new(m));
        // Drops borrow as mut

        Box::new(lib)
    }
}