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use serde::{Deserialize, Serialize};

use crate::{
    Edge, EdgeStore, EdgeStoreData, Error, HasEdgeStore, HasNodeStore, Meta, Metadata, Node,
    NodeStore, NodeStoreData,
};

#[derive(Clone, Debug, Default, Serialize, Deserialize, PartialEq)]
pub struct Graph {
    /// Instance metadata.
    pub metadata: Metadata,
    /// Node store.
    pub nodes: NodeStoreData,
    /// Edge store.
    pub edges: EdgeStoreData,
}

impl HasNodeStore for Graph {
    fn node_store(&self) -> &NodeStoreData {
        &self.nodes
    }
    fn node_store_mut(&mut self) -> &mut NodeStoreData {
        &mut self.nodes
    }
}
impl NodeStore for Graph {}
impl HasEdgeStore for Graph {
    fn edge_store(&self) -> &EdgeStoreData {
        &self.edges
    }
    fn edge_store_mut(&mut self) -> &mut EdgeStoreData {
        &mut self.edges
    }
}
impl EdgeStore for Graph {}

impl Graph {
    pub fn new(
        metadata: Option<Metadata>,
        nodes: Vec<Node>,
        edges: Vec<Edge>,
    ) -> Result<Self, Error> {
        let mut node_store = NodeStoreData::default();
        node_store.extend_nodes(nodes, true)?;
        let mut edge_store = EdgeStoreData::default();
        edge_store.extend_edges(edges, true, Some(&node_store))?;
        let graph = Self {
            metadata: metadata.unwrap_or_default(),
            nodes: node_store,
            edges: edge_store,
        };
        Ok(graph)
    }
}

impl Meta for Graph {
    fn get_meta(&self) -> &Metadata {
        &self.metadata
    }
}