using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using UnityEditor;
using UnityEngine;

namespace Stary.Evo.StoryEditor.Editor
{
    public static class GraphEditorTools
    {
        public static int Popup(string content, int currentIndex, string[] options)
        {
            EditorGUILayout.LabelField( "请选择剧本所在的Package：" , EditorStyles.boldLabel ) ;
            return EditorGUILayout.Popup( currentIndex , options ) ;
        }
        
        /// <summary>
        /// 获取所有Module Package
        /// </summary>
        public static List<string> GetPackages()
        {
            // 查找Modules目录
            List<string> modules = new();
            GetDirectoryPaths(Application.dataPath, modules, "Modules");
            if (modules.Count == 0)
            {
                Debug.LogError("未找到任何Modules目录");
                return new();
            }

            // 查找package
            List<string> packages = new();
            GetDirectoryPaths(modules[0], packages, "com.");
            if (packages.Count == 0)
            {
                Debug.LogError("未找到任何Package");
                return new();
            }

            return packages;
        }
        
        /// <summary>
        /// 获取符合条件的目录
        /// </summary>
        /// <param name="root">查找起始目录</param>
        /// <param name="result">查找结果</param>
        /// <param name="title">筛选条件（title）</param>
        /// <param name="tail">筛选条件（tail）</param>
        private static void GetDirectoryPaths(string root, List<string> result, string title = null, string tail = null)
        {
            foreach (var dir in Directory.GetDirectories(root))
            {
                // ReSharper disable once ReplaceWithSingleAssignment.True
                var check = true;
            
                // 匹配文件头
                if (!string.IsNullOrEmpty(title) && !Path.GetFileName(dir).StartsWith(title))
                {
                    check = false;
                }
                // 匹配文件尾
                if (!string.IsNullOrEmpty(tail) && !Path.GetFileName(dir).EndsWith(tail))
                {
                    check = false;
                }
            
                if(check)
                    result.Add(dir.Replace('\\', '/'));
                
                // 继续往下找
                GetDirectoryPaths(dir, result, title);
            }
        }
        
        public static IEnumerable<string> GetAllAssemblyNames() =>
            AppDomain.CurrentDomain.GetAssemblies().Select(a => a.GetName().Name).OrderBy(n => n);
        
        /// <summary>
        /// 获取继承 IResource 的所有类
        /// </summary>
        public static HashSet<string> IResourceTypes(string assembly)
        {
            if (string.IsNullOrEmpty(assembly))
                return new();
            var asm = AppDomain.CurrentDomain.GetAssemblies().FirstOrDefault(a => a.GetName().Name == assembly);
            return asm == null ? new() : asm.GetTypes().Where(t => t.IsClass && !t.IsAbstract && t.GetInterfaces().Any(i => i.Name == nameof(IResource))).Select(t => t.Name).ToHashSet();
        }
    }
}