using System.Diagnostics.CodeAnalysis;

namespace SimpleHttpServer.Types;
internal class MultiKeyDictionary<K1, K2, V> where K1 : notnull where K2 : notnull {
    internal readonly Dictionary<K1, Dictionary<K2, V>> backingDict = new();
    public MultiKeyDictionary() { }

    public void Add(K1 k1, K2 k2, V value) {
        if (!backingDict.TryGetValue(k1, out var d2))
            d2 = new();
        d2.Add(k2, value);
        backingDict[k1] = d2;
    }

    public bool TryGetValue(K1 k1, K2 k2, [MaybeNullWhen(false)] out V value) {
        if (backingDict.TryGetValue(k1, out var d2) && d2.TryGetValue(k2, out value))
            return true;

        value = default;
        return false;
    }
}