using AscNet.Common.Database;
using AscNet.Common.MsgPack;
using AscNet.Common.Util;
using AscNet.Table.V2.share.item;
using AscNet.Table.V2.share.character;
using MessagePack;
using AscNet.Common;

namespace AscNet.GameServer.Handlers
{
    #region MsgPackScheme
#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.
    [MessagePackObject(true)]
    public class CharacterLevelUpRequest
    {
        public uint TemplateId;
        public Dictionary<int, int> UseItems;
    }

    [MessagePackObject(true)]
    public class CharacterLevelUpResponse
    {
        public int Code;
    }

    [MessagePackObject(true)]
    public class CharacterActivateStarRequest
    {
        public int TemplateId;
    }

    [MessagePackObject(true)]
    public class CharacterActivateStarResponse
    {
        public int Code;
    }

    [MessagePackObject(true)]
    public class CharacterPromoteGradeRequest
    {
        public int TemplateId;
    }

    [MessagePackObject(true)]
    public class CharacterPromoteGradeResponse
    {
        public int Code;
    }

    [MessagePackObject(true)]
    public class CharacterExchangeRequest
    {
        public int TemplateId;
    }

    [MessagePackObject(true)]
    public class CharacterExchangeResponse
    {
        public int Code;
    }

    [MessagePackObject(true)]
    public class FashionSyncNotify
    {
        public List<FashionList> FashionList = new();
    }
#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.
    #endregion

    internal class CharacterModule
    {
        [RequestPacketHandler("CharacterLevelUpRequest")]
        public static void CharacterLevelUpRequestHandler(Session session, Packet.Request packet)
        {
            CharacterLevelUpRequest request = packet.Deserialize<CharacterLevelUpRequest>();
            CharacterTable? characterData = TableReaderV2.Parse<CharacterTable>().FirstOrDefault(x => x.Id == request.TemplateId);

            if (characterData is null || !session.character.Characters.Any(x => x.Id == characterData.Id))
            {
                // CharacterManagerGetCharacterTemplateNotFound
                session.SendResponse(new CharacterLevelUpResponse() { Code = 20009001 }, packet.Id);
                return;
            }

            NotifyItemDataList notifyItemData = new();
            int totalExp = 0;
            foreach (var item in request.UseItems)
            {
                ItemTable? itemTable = TableReaderV2.Parse<ItemTable>().FirstOrDefault(x => x.Id == item.Key);
                if (itemTable is not null)
                {
                    totalExp += itemTable.GetCharacterExp(characterData.Type) * item.Value;
                    notifyItemData.ItemDataList.Add(session.inventory.Do(item.Key, item.Value * -1));
                }
            }
            session.SendPush(notifyItemData);

            var characterUp = session.character.AddCharacterExp(characterData.Id, totalExp, (int)session.player.PlayerData.Level);
            if (characterUp is not null)
            {
                NotifyCharacterDataList notifyCharacterData = new();
                notifyCharacterData.CharacterDataList.Add(characterUp);
                session.SendPush(notifyCharacterData);
            }

            session.SendResponse(new CharacterLevelUpResponse(), packet.Id);
        }

        [RequestPacketHandler("CharacterPromoteGradeRequest")]
        public static void CharacterPromoteGradeRequestHandler(Session session, Packet.Request packet)
        {
            CharacterPromoteGradeRequest req = packet.Deserialize<CharacterPromoteGradeRequest>();
            var character = session.character.Characters.Find(c => c.Id == req.TemplateId);

            if (character is not null)
            {
                const int MaxGrade = 14; // Can't find an instance of this anywhere in the tables sadly

                // TODO: Remove Cogs

                if (character.Grade < MaxGrade)
                    character.Grade++;
                
                session.SendPush(new NotifyCharacterDataList()
                {
                    CharacterDataList = { character }
                });
            }

            session.SendResponse(new CharacterPromoteGradeResponse(), packet.Id);
        }

        [RequestPacketHandler("CharacterActivateStarRequest")]
        public static void CharacterActivateStarRequestHandler(Session session, Packet.Request packet)
        {
            CharacterActivateStarRequest req = packet.Deserialize<CharacterActivateStarRequest>();
            var character = session.character.Characters.Find(c => c.Id == req.TemplateId);

            if (character is not null)
            {
                const int MaxQuality = 6; // Can't find an instance of this anywhere in the tables sadly

                // TODO: Remove Materials
                if (character.Quality < MaxQuality)
                    character.Quality++;

                session.SendPush(new NotifyCharacterDataList()
                {
                    CharacterDataList = { character }
                });
            }
            
            session.SendResponse(new CharacterActivateStarResponse(), packet.Id);
        }

        [RequestPacketHandler("CharacterUpgradeSkillGroupRequest")]
        public static void CharacterUpgradeSkillGroupRequestHandler(Session session, Packet.Request packet)
        {
            CharacterUpgradeSkillGroupRequest request = packet.Deserialize<CharacterUpgradeSkillGroupRequest>();

            var upgradeResult = session.character.UpgradeCharacterSkillGroup(request.SkillGroupId, request.Count);

            NotifyCharacterDataList notifyCharacterData = new();
            notifyCharacterData.CharacterDataList.AddRange(session.character.Characters.Where(x => upgradeResult.AffectedCharacters.Contains(x.Id)));

            NotifyItemDataList notifyItemData = new();
            notifyItemData.ItemDataList.AddRange(new Item[] {
                session.inventory.Do(Inventory.Coin, upgradeResult.CoinCost * -1),
                session.inventory.Do(Inventory.SkillPoint, upgradeResult.SkillPointCost * -1)
            });

            session.SendPush(notifyCharacterData);
            session.SendPush(notifyItemData);

            session.SendResponse(new CharacterUpgradeSkillGroupResponse(), packet.Id);
        }

        [RequestPacketHandler("CharacterExchangeRequest")]
        public static void CharacterExchangeRequestHandler(Session session, Packet.Request packet)
        {
            CharacterExchangeRequest request = packet.Deserialize<CharacterExchangeRequest>();
            CharacterTable? characterData = TableReaderV2.Parse<CharacterTable>().FirstOrDefault(x => x.Id == request.TemplateId);

            if (characterData is null)
            {
                CharacterExchangeResponse rsp = new()
                {
                    // CharacterManagerGetCharacterTemplateNotFound
                    Code = 20009001
                };
                session.SendResponse(rsp, packet.Id);
                return;
            }

            if (!session.inventory.Items.Any(x => x.Id == characterData.ItemId && x.Count >= 50))
            {
                CharacterExchangeResponse rsp = new()
                {
                    // ItemCountNotEnough
                    Code = 20012004
                };
                session.SendResponse(rsp, packet.Id);
                return;
            }

            NotifyItemDataList notifyItemData = new();
            // idk if it's always 50, please investigate later...
            notifyItemData.ItemDataList.Add(session.inventory.Do(characterData.ItemId, 50 * -1));
            session.SendPush(notifyItemData);

            try
            {
                NotifyEquipDataList notifyEquipData = new();
                FashionSyncNotify fashionSync = new();
                NotifyCharacterDataList notifyCharacterData = new();
                var addRet = session.character.AddCharacter((uint)request.TemplateId);

                notifyEquipData.EquipDataList.Add(addRet.Equip);
                fashionSync.FashionList.Add(addRet.Fashion);
                notifyCharacterData.CharacterDataList.Add(addRet.Character);
                session.SendPush(notifyEquipData);
                session.SendPush(fashionSync);
                session.SendPush(notifyCharacterData);
            }
            catch (ServerCodeException ex)
            {
                CharacterExchangeResponse rsp = new() { Code = ex.Code };
                session.SendResponse(rsp, packet.Id);
                return;
            }

            session.SendResponse(new CharacterExchangeResponse(), packet.Id);
        }
    }
}