using System.Collections.Generic;
using System.IO;
using System.Linq;
using AIImages.Components;
using UnityEngine;
using Verse;

namespace AIImages.Helpers
{
    /// <summary>
    /// Вспомогательный класс для работы с портретами персонажей
    /// </summary>
    public static class PawnPortraitHelper
    {
        /// <summary>
        /// Получить компонент портрета пешки
        /// </summary>
        public static PawnPortraitComp GetPortraitComp(Pawn pawn)
        {
            if (pawn == null)
            {
                DebugLogger.Warning("[AI Images] GetPortraitComp called with null pawn");
                return null;
            }

            var comp = pawn.TryGetComp<PawnPortraitComp>();
            DebugLogger.Log(
                $"[AI Images] GetPortraitComp for {pawn.Name}: {(comp != null ? "Found" : "Not found")}"
            );
            return comp;
        }

        /// <summary>
        /// Сохранить путь к портрету на пешке (добавляет в галерею)
        /// </summary>
        public static void SavePortraitPath(Pawn pawn, string path)
        {
            DebugLogger.Log(
                $"[AI Images] SavePortraitPath called for {pawn?.Name} with path: {path}"
            );

            var comp = GetPortraitComp(pawn);
            if (comp != null)
            {
                comp.AddPortrait(path);
                DebugLogger.Log(
                    $"[AI Images] Successfully added portrait path for {pawn.Name}: {path}"
                );
                DebugLogger.Log($"[AI Images] Component now has {comp.PortraitCount} portraits");
            }
            else
            {
                DebugLogger.Error($"[AI Images] Failed to get portrait component for {pawn?.Name}");
            }
        }

        /// <summary>
        /// Получить путь к портрету пешки
        /// </summary>
        public static string GetPortraitPath(Pawn pawn)
        {
            DebugLogger.Log($"[AI Images] GetPortraitPath called for {pawn?.Name}");

            var comp = GetPortraitComp(pawn);
            if (comp == null)
            {
                DebugLogger.Warning($"[AI Images] No portrait component found for {pawn?.Name}");
                return null;
            }

            DebugLogger.Log(
                $"[AI Images] Portrait component found for {pawn?.Name}, path: '{comp.PortraitPath}'"
            );
            return comp.PortraitPath;
        }

        /// <summary>
        /// Есть ли у пешки сохраненный портрет
        /// </summary>
        public static bool HasPortrait(Pawn pawn)
        {
            DebugLogger.Log($"[AI Images] HasPortrait called for {pawn?.Name}");

            var comp = GetPortraitComp(pawn);
            if (comp == null)
            {
                DebugLogger.Log($"[AI Images] No portrait component found for {pawn?.Name}");
                return false;
            }

            bool hasPortrait = comp.HasPortrait;
            DebugLogger.Log(
                $"[AI Images] Portrait component for {pawn?.Name} has portrait: {hasPortrait} (path: '{comp.PortraitPath}')"
            );
            return hasPortrait;
        }

        /// <summary>
        /// Загрузить портрет пешки как текстуру
        /// </summary>
        public static Texture2D LoadPortrait(Pawn pawn)
        {
            DebugLogger.Log($"[AI Images] LoadPortrait called for {pawn?.Name}");

            string path = GetPortraitPath(pawn);
            DebugLogger.Log($"[AI Images] Retrieved path for {pawn?.Name}: '{path}'");

            if (string.IsNullOrEmpty(path))
            {
                DebugLogger.Log($"[AI Images] No portrait path found for {pawn?.Name}");
                return null;
            }

            if (!File.Exists(path))
            {
                DebugLogger.Warning(
                    $"[AI Images] Portrait file does not exist for {pawn?.Name}: {path}"
                );
                return null;
            }

            DebugLogger.Log($"[AI Images] Portrait file exists for {pawn?.Name}: {path}");

            try
            {
                byte[] imageData = File.ReadAllBytes(path);
                DebugLogger.Log(
                    $"[AI Images] Successfully read {imageData.Length} bytes from {path}"
                );

                Texture2D texture = new Texture2D(2, 2);
                texture.LoadImage(imageData);
                DebugLogger.Log(
                    $"[AI Images] Successfully loaded texture for {pawn?.Name}, size: {texture.width}x{texture.height}"
                );
                return texture;
            }
            catch (System.Exception ex)
            {
                DebugLogger.Warning(
                    $"[AI Images] Failed to load portrait for {pawn?.Name}: {ex.Message}"
                );
                return null;
            }
        }

        /// <summary>
        /// Очистить портрет пешки (удаляет все портреты)
        /// </summary>
        public static void ClearPortrait(Pawn pawn)
        {
            var comp = GetPortraitComp(pawn);
            if (comp != null)
            {
                comp.ClearPortraits();
            }
        }

        /// <summary>
        /// Получить все пути к портретам пешки (галерея)
        /// </summary>
        public static List<string> GetAllPortraits(Pawn pawn)
        {
            var comp = GetPortraitComp(pawn);
            return comp?.GetAllPortraits() ?? new List<string>();
        }

        /// <summary>
        /// Получить количество портретов в галерее
        /// </summary>
        public static int GetPortraitCount(Pawn pawn)
        {
            var comp = GetPortraitComp(pawn);
            return comp?.PortraitCount ?? 0;
        }

        /// <summary>
        /// Удалить конкретный портрет из галереи
        /// </summary>
        public static bool RemovePortrait(Pawn pawn, string path)
        {
            var comp = GetPortraitComp(pawn);
            return comp?.RemovePortrait(path) ?? false;
        }

        /// <summary>
        /// Очистить все сгенерированные портреты
        /// </summary>
        public static int ClearAllPortraits(string savePath)
        {
            ClearPawnComponents();
            return DeletePortraitFiles(savePath);
        }

        private static void ClearPawnComponents()
        {
            if (Current.Game?.Maps == null)
                return;

            foreach (var map in Current.Game.Maps)
            {
                foreach (var pawn in map.mapPawns.AllPawns)
                {
                    var comp = GetPortraitComp(pawn);
                    if (comp != null && comp.HasPortrait)
                    {
                        comp.ClearPortraits();
                    }
                }
            }
        }

        private static int DeletePortraitFiles(string savePath)
        {
            int deletedCount = 0;
            string fullPath = Path.Combine(GenFilePaths.SaveDataFolderPath, savePath);

            if (!Directory.Exists(fullPath))
                return deletedCount;

            try
            {
                var files = Directory.GetFiles(fullPath, "*.png");
                deletedCount = files.Count(TryDeleteFile);
                Log.Message($"[AI Images] Deleted {deletedCount} portrait files");
            }
            catch (System.Exception ex)
            {
                Log.Error($"[AI Images] Error cleaning portraits directory: {ex.Message}");
            }

            return deletedCount;
        }

        private static bool TryDeleteFile(string file)
        {
            try
            {
                File.Delete(file);
                return true;
            }
            catch (System.Exception ex)
            {
                Log.Warning($"[AI Images] Failed to delete file {file}: {ex.Message}");
                return false;
            }
        }
    }
}