using SPTarkov.DI.Annotations;
using SPTarkov.Server.Core.Helpers;
using SPTarkov.Server.Core.Models.Eft.Builds;
using SPTarkov.Server.Core.Models.Eft.PresetBuild;
using SPTarkov.Server.Core.Models.Eft.Profile;
using SPTarkov.Server.Core.Models.Enums;
using SPTarkov.Server.Core.Models.Utils;
using SPTarkov.Server.Core.Routers;
using SPTarkov.Server.Core.Servers;
using SPTarkov.Server.Core.Services;
using SPTarkov.Server.Core.Utils;
using SPTarkov.Server.Core.Utils.Cloners;

namespace SPTarkov.Server.Core.Controllers;

[Injectable]
public class BuildController(
    ISptLogger<BuildController> _logger,
    HashUtil _hashUtil,
    EventOutputHolder _eventOutputHolder,
    DatabaseService _databaseService,
    ProfileHelper _profileHelper,
    LocalisationService _localisationService,
    ItemHelper _itemHelper,
    SaveServer _saveServer,
    ICloner _cloner
)
{
    /// <summary>
    ///     Handle client/handbook/builds/my/list
    /// </summary>
    /// <param name="sessionID">Session/player id</param>
    /// <returns></returns>
    public UserBuilds? GetUserBuilds(string sessionID)
    {
        const string secureContainerSlotId = "SecuredContainer";

        var profile = _profileHelper.GetFullProfile(sessionID);
        if (profile?.UserBuildData is null)
        {
            profile.UserBuildData = new UserBuilds
            {
                EquipmentBuilds = [],
                WeaponBuilds = [],
                MagazineBuilds = []
            };
        }

        // Ensure the secure container in the default presets match what the player has equipped
        var defaultEquipmentPresetsClone = _cloner.Clone(_databaseService.GetTemplates().DefaultEquipmentPresets)
            .ToList();

        // Get players secure container
        var playerSecureContainer = profile?.CharacterData?.PmcData?.Inventory?.Items?.FirstOrDefault(x => x.SlotId == secureContainerSlotId
        );

        var firstDefaultItemsSecureContainer = defaultEquipmentPresetsClone?
            .FirstOrDefault()
            ?.Items?
            .FirstOrDefault(x => x.SlotId == secureContainerSlotId);

        if (playerSecureContainer is not null && playerSecureContainer.Template != firstDefaultItemsSecureContainer?.Template)
            // Default equipment presets' secure container tpl doesn't match players secure container tpl
        {
            foreach (var defaultPreset in defaultEquipmentPresetsClone)
            {
                // Find presets secure container
                var secureContainer = defaultPreset.Items?.FirstOrDefault(item => item.SlotId == secureContainerSlotId);
                if (secureContainer is not null)
                {
                    secureContainer.Template = playerSecureContainer.Template;
                }
            }
        }

        // Clone player build data from profile and append the above defaults onto end
        var userBuildsClone = _cloner.Clone(profile?.UserBuildData);

        userBuildsClone.EquipmentBuilds ??= [];
        userBuildsClone?.EquipmentBuilds?.AddRange(defaultEquipmentPresetsClone);

        return userBuildsClone;
    }

    /// <summary>
    ///     Handle client/builds/weapon/save
    /// </summary>
    /// <param name="sessionId">Session/Player id</param>
    /// <param name="body"></param>
    public void SaveWeaponBuild(string sessionId, PresetBuildActionRequestData body)
    {
        var pmcData = _profileHelper.GetPmcProfile(sessionId);

        // Replace duplicate Id's. The first item is the base item.
        // The root ID and the base item ID need to match.
        body.Items = _itemHelper.ReplaceIDs(body.Items, pmcData);
        body.Root = body.Items.FirstOrDefault().Id;

        // Create new object ready to save into profile userbuilds.weaponBuilds
        var newBuild = new WeaponBuild
        {
            Id = body.Id,
            Name = body.Name,
            Root = body.Root,
            Items = body.Items
        };

        var profile = _profileHelper.GetFullProfile(sessionId);

        var savedWeaponBuilds = profile.UserBuildData.WeaponBuilds;
        var existingBuild = savedWeaponBuilds.FirstOrDefault(x => x.Id == body.Id);
        if (existingBuild is not null)
        {
            // exists, replace
            profile.UserBuildData.WeaponBuilds.Remove(existingBuild);
            profile.UserBuildData.WeaponBuilds.Add(existingBuild);
        }
        else
        {
            // Add fresh
            profile.UserBuildData.WeaponBuilds.Add(newBuild);
        }
    }

    /// <summary>
    ///     Handle client/builds/equipment/save event
    /// </summary>
    /// <param name="sessionID">Session/player id</param>
    /// <param name="request"></param>
    public void SaveEquipmentBuild(string sessionID, PresetBuildActionRequestData request)
    {
        var profile = _profileHelper.GetFullProfile(sessionID);
        var pmcData = profile.CharacterData.PmcData;

        var existingSavedEquipmentBuilds =
            _saveServer.GetProfile(sessionID).UserBuildData.EquipmentBuilds;

        // Replace duplicate ID's. The first item is the base item.
        // Root ID and the base item ID need to match.
        request.Items = _itemHelper.ReplaceIDs(request.Items, pmcData);

        var newBuild = new EquipmentBuild
        {
            Id = request.Id,
            Name = request.Name,
            BuildType = EquipmentBuildType.Custom,
            Root = request.Items[0].Id,
            Items = request.Items
        };

        var existingBuild = existingSavedEquipmentBuilds?.FirstOrDefault(build => build.Name == request.Name || build.Id == request.Id
        );
        if (existingBuild is not null)
        {
            // Already exists, replace
            profile.UserBuildData.EquipmentBuilds.Remove(existingBuild);
            profile.UserBuildData.EquipmentBuilds.Add(newBuild);
        }
        else
        {
            // Fresh, add new
            profile.UserBuildData.EquipmentBuilds.Add(newBuild);
        }
    }

    /// <summary>
    ///     Handle client/builds/delete
    /// </summary>
    /// <param name="sessionId">Session/Player id</param>
    /// <param name="request"></param>
    public void RemoveBuild(string sessionId, RemoveBuildRequestData request)
    {
        if (request.Id is not null)
        {
            RemovePlayerBuild(request.Id, sessionId);
        }
    }

    /// <summary>
    ///     Handle client/builds/magazine/save
    /// </summary>
    /// <param name="sessionId">Session/Player id</param>
    /// <param name="request"></param>
    public void CreateMagazineTemplate(string sessionId, SetMagazineRequest request)
    {
        var result = new MagazineBuild
        {
            Id = request.Id,
            Name = request.Name,
            Caliber = request.Caliber,
            TopCount = request.TopCount,
            BottomCount = request.BottomCount,
            Items = request.Items
        };

        var profile = _profileHelper.GetFullProfile(sessionId);

        profile.UserBuildData.MagazineBuilds ??= [];

        // Check if template with desired name already exists and remove it
        var magazineBuildToRemove = profile.UserBuildData.MagazineBuilds.FirstOrDefault(item => item.Name == request.Name);
        if (magazineBuildToRemove is not null)
        {
            profile.UserBuildData.MagazineBuilds.Remove(magazineBuildToRemove);
        }

        // Add new template to profile
        profile.UserBuildData.MagazineBuilds.Add(result);
    }

    /// <summary>
    ///     Handle client/builds/delete
    ///     Remove build from players profile
    /// </summary>
    /// <param name="idToRemove"></param>
    /// <param name="sessionId">Session/Player id</param>
    protected void RemovePlayerBuild(string idToRemove, string sessionID)
    {
        var profile = _saveServer.GetProfile(sessionID);
        var weaponBuilds = profile.UserBuildData.WeaponBuilds;
        var equipmentBuilds = profile.UserBuildData.EquipmentBuilds;
        var magazineBuilds = profile.UserBuildData.MagazineBuilds;

        // Check for id in weapon array first
        var matchingWeaponBuild = weaponBuilds.FirstOrDefault(weaponBuild => weaponBuild.Id == idToRemove);
        if (matchingWeaponBuild is not null)
        {
            weaponBuilds.Remove(matchingWeaponBuild);

            return;
        }

        // Id not found in weapons, try equipment
        var matchingEquipmentBuild = equipmentBuilds.FirstOrDefault(equipmentBuild => equipmentBuild.Id == idToRemove);
        if (matchingEquipmentBuild is not null)
        {
            equipmentBuilds.Remove(matchingEquipmentBuild);

            return;
        }

        // Id not found in weapons/equipment, try mags
        var matchingMagazineBuild = magazineBuilds.FirstOrDefault(magBuild => magBuild.Id == idToRemove);
        if (matchingMagazineBuild is not null)
        {
            magazineBuilds.Remove(matchingMagazineBuild);

            return;
        }

        // Not found in weapons,equipment or magazines, not good
        _logger.Error(_localisationService.GetText("build-unable_to_delete_preset", idToRemove));
    }
}