using System.Text.Json;
using Yuanshen.Protocol;

namespace Yuanshen.Gameserver.Game;

internal readonly record struct SpawnNode(uint NodeId, uint ConfigId, uint GroupId, uint MonsterId, uint Level, Vector Pos, float Hp, float Attack, float Defense)
{
    public bool IsWildlife => MonsterId is >= 28000000 and < 29000000;
}

internal sealed class MonsterSpawnTable
{
    public IReadOnlyList<SpawnNode> Nodes { get; }

    public MonsterSpawnTable()
    {
        Nodes = Load("scene3_spawns.json");
    }

    private static List<SpawnNode> Load(string fileName)
    {
        List<SpawnNode> nodes = new();
        string path = Path.Combine(AppContext.BaseDirectory, "assets", "scene", fileName);
        if (!File.Exists(path))
            return nodes;

        using JsonDocument document = JsonDocument.Parse(File.ReadAllText(path));
        foreach (JsonElement entry in document.RootElement.EnumerateArray())
        {
            uint configId = entry.GetProperty("c").GetUInt32();
            if (configId == 0)
                continue;

            if (entry.TryGetProperty("a", out JsonElement active) && active.GetUInt32() != 1)
                continue;

            uint nodeId = entry.TryGetProperty("n", out JsonElement node) ? node.GetUInt32() : configId;
            uint groupId = entry.TryGetProperty("g", out JsonElement group) ? group.GetUInt32() : 0;

            nodes.Add(new SpawnNode(
                nodeId,
                configId,
                groupId,
                entry.GetProperty("m").GetUInt32(),
                entry.GetProperty("l").GetUInt32(),
                new Vector
                {
                    X = entry.GetProperty("x").GetSingle(),
                    Y = entry.GetProperty("y").GetSingle(),
                    Z = entry.GetProperty("z").GetSingle()
                },
                entry.GetProperty("hp").GetSingle(),
                entry.GetProperty("atk").GetSingle(),
                entry.GetProperty("def").GetSingle()));
        }

        return nodes;
    }
}