using Audio; 
using System.Collections.Generic;
using XMLEditing;
using static EntityDrone;

namespace Harmony.SpawnPointListPatches
{
    [HarmonyPatch(typeof(SpawnPointList))]
    [HarmonyPatch("GetRandomSpawnPosition")]
    public class GetRandomSpawnPositionPatch
    {
        public static bool Prefix(SpawnPointList __instance, ref SpawnPosition __result, World _world, Vector3? _refPosition = null, int _minDistance = 0, int _maxDistance = 0)
        {
            //Log.Out("===================================================================");
            //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition START");
            //Log.Out("===================================================================");

            if (_world.IsEditor() || GameUtils.IsWorldEditor() || GameUtils.IsPlaytesting())
            {
                return true;
            }

            if (__instance.Count > 0)
            {
                //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition 1, __instance.Count: " + __instance.Count);
                bool bFound = false;

                string biome = RebirthVariables.customBiomeSpawn;

                //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition biome: " + biome);

                if (RebirthUtilities.ScenarioSkip())
                {
                    //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition HIVE");

                    List<PrefabInstance> prefabInstances = new List<PrefabInstance> ();

                    foreach (string prefabName in RebirthVariables.hivePrefab)
                    {
                        var matchingInstances = GameManager.Instance.World.ChunkClusters[0].ChunkProvider
                            .GetDynamicPrefabDecorator()
                            .GetDynamicPrefabs()
                            .FindAll(instance => instance.name.Contains(prefabName));

                        prefabInstances.AddRange(matchingInstances);
                    }

                    //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition prefabInstances.Count: " + prefabInstances.Count);

                    if (prefabInstances.Count > 0)
                    {
                        List<PrefabInstance> validPrefabs = new List<PrefabInstance>();

                        foreach (PrefabInstance prefab in prefabInstances)
                        {
                            Vector2 prefabPosition = new Vector2((float)prefab.boundingBoxPosition.x + (float)prefab.boundingBoxSize.x / 2f, (float)prefab.boundingBoxPosition.z + (float)prefab.boundingBoxSize.z / 2f);

                            //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition prefabPosition: " + prefabPosition);

                            BiomeDefinition biomeAt = GameManager.Instance.World.ChunkCache.ChunkProvider.GetBiomeProvider().GetBiomeAt((int)prefabPosition.x, (int)prefabPosition.y);

                            if (biomeAt != null && biomeAt.m_sBiomeName == "pine_forest")
                            {
                                //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition biomeAt.m_sBiomeName: " + biomeAt.m_sBiomeName);
                                validPrefabs.Add(prefab);
                            }
                        }

                        if (validPrefabs.Count > 0)
                        {
                            //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition PARSING VALID PREFABS: " + validPrefabs.Count);
                            int random = Manager.random.RandomRange(0, validPrefabs.Count);

                            //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition random: " + random);
                            PrefabInstance selectedPrefab = validPrefabs[random];

                            Vector3 prefabPosition = selectedPrefab.boundingBoxPosition;

                            if (selectedPrefab != null)
                            {
                                //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition selectedPrefab.boundingBoxPosition: " + selectedPrefab.boundingBoxPosition);
                                __result = new SpawnPosition(selectedPrefab.boundingBoxPosition, 0f);
                                return false;
                            }
                        }
                    }
                }

                if (biome == "random")
                {
                    GameRandom gameRandom = _world.GetGameRandom();
                    if (_refPosition == null)
                    {
                        //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition RANDOM BIOME 1");
                        __result = __instance[gameRandom.RandomRange(__instance.Count)].spawnPosition;
                        return false;

                    }
                    Vector3 value = _refPosition.Value;
                    for (int i = 0; i < 100; i++)
                    {
                        int index = gameRandom.RandomRange(__instance.Count);
                        SpawnPosition spawnPosition = __instance[index].spawnPosition;
                        float magnitude = (spawnPosition.position - value).magnitude;
                        if (magnitude >= (float)_minDistance && magnitude <= (float)_maxDistance)
                        {
                            //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition RANDOM BIOME 2");
                            __result = spawnPosition;
                            return false;
                        }
                    }
                    float num = float.MaxValue;
                    int num2 = -1;
                    for (int j = 0; j < __instance.Count; j++)
                    {
                        float sqrMagnitude = (__instance[j].spawnPosition.position - value).sqrMagnitude;
                        if (sqrMagnitude < num)
                        {
                            num = sqrMagnitude;
                            num2 = j;
                        }
                    }
                    if (num2 != -1)
                    {
                        //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition RANDOM BIOME 3");
                        __result = __instance[num2].spawnPosition;
                        return false;
                    }

                    //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition RANDOM BIOME 4");
                    __result = SpawnPosition.Undef;
                    return false;
                }

                if (!GameUtils.IsPlaytesting() && biome != "randomtrader")
                {
                    for (int j = 0; j < __instance.Count; j++)
                    {
                        //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition 2, j: " + j + " / position: " + __instance[j].spawnPosition);

                        string biomeName = RebirthUtilities.GetBiomeName(__instance[j].spawnPosition.ToBlockPos());
                        
                        if (biomeName != "")
                        {
                            //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition A, biomeAt.m_Id: " + biomeAt.m_Id);
                            //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition A, biomeName: " + biomeName);

                            bool isValidBiome = false;

                            if (biomeName == biome)
                            {
                                isValidBiome = true;
                            }
                            else if (biomeName == "pine_forest" && biome == "forest")
                            {
                                isValidBiome = true;
                            }
                            else if (biomeName == "burnt_forest" && biome == "burnt")
                            {
                                isValidBiome = true;
                            }

                            if (isValidBiome)
                            {
                                __result = __instance[j].spawnPosition;

                                //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition B, __result.position: " + __result.position);

                                return false;
                            }
                        }
                    }
                }

                if (!bFound)
                {
                    //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition 5");

                    int index = UnityEngine.Random.Range(0, __instance.Count - 1);

                    //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition 6, index: " + index);

                    __result = __instance[index].spawnPosition;

                    int height = (int)GameManager.Instance.World.GetHeightAt(__result.position.x, __result.position.y);

                    __result.position.y = height;

                    //Log.Out("SpawnPointListPatches-GetRandomSpawnPosition 7, __result.position: " + __result.position);

                    return false;
                }
            }
            __result = SpawnPosition.Undef;

            return false;
        }
    }
}