using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;

namespace Superlazy
{
    public static class SLSystemUtility
    {
        public static void CreateTypeList<T>(this List<Type> ret) where T : class
        {
            ForeachTypeof(typeof(T), (a, t) =>
            {
                ret.Add(t);
            });
        }

        public static void CreateInstanceList<T>(this List<T> ret) where T : class
        {
            ForeachTypeof(typeof(T), (a, t) =>
            {
                var obj = a.CreateInstance(t.FullName);
                ret.Add(obj as T);
            });
        }

        public static void CreateInstanceList<T>(this List<T> ret, string[] typeNames) where T : class
        {
            ForeachTypeof(typeof(T), (a, t) =>
            {
                if (typeNames.FirstOrDefault(n => n == t.FullName) == null) return;

                var obj = a.CreateInstance(t.FullName);
                ret.Add(obj as T);
            });
        }

        public static void CreateInstanceDictionary<T>(this Dictionary<string, T> ret) where T : class
        {
            ForeachTypeof(typeof(T), (a, t) =>
            {
                var obj = a.CreateInstance(t.FullName);
                ret.Add(t.Name, obj as T);
            });
        }

        public static void CreateInstanceDictionary<T>(this Dictionary<string, T> ret, string[] typeNames) where T : class
        {
            ForeachTypeof(typeof(T), (a, t) =>
            {
                if (typeNames.FirstOrDefault(n => n == t.FullName) == null) return;

                var obj = a.CreateInstance(t.FullName);
                ret.Add(t.Name, obj as T);
            });
        }

        public static void CreateMethodInfoDictionary<T>(this Dictionary<string, Dictionary<string, MethodInfo>> ret, bool useReturn, params Type[] argTypes) where T : class
        {
            ForeachTypeof(typeof(T), (a, t) =>
            {
                var methodArr = t.GetMethods();
                var methodDic = new Dictionary<string, MethodInfo>();
                for (var i = 0; i < methodArr.Length; i++)
                {
                    var method = methodArr[i];
                    var parameters = method.GetParameters();
                    if (parameters.CompareLengthAndTypes(argTypes.Skip(useReturn ? 1 : 0).ToArray()) && (useReturn ? method.ReturnType == argTypes[0] : method.ReturnType == typeof(void)))
                        methodDic.Add(method.Name, method);
                }
                ret.Add(t.Name, methodDic);
            });
        }

        public static void CreateCommandInfoToBaseType<T>(this Dictionary<string, (T instance, MethodInfo method)> ret, T instance, params Type[] argTypes) where T : class
        {
            var methodArr = instance.GetType().GetMethods();
            for (var i = 0; i < methodArr.Length; i++)
            {
                var method = methodArr[i];
                var parameters = method.GetParameters();
                if (parameters.CompareLengthAndTypes(typeof(SLEntity)))
                {
                    ret.Add(string.Format("{0}/{1}", instance.GetType().Name, method.Name), (instance, method));
                }
            }
        }

        public static List<MethodInfo> GetMethods<T>() where T : class
        {
            var methods = new List<MethodInfo>();
            var rootType = typeof(T);

            ForeachTypeof(typeof(T), (a, t) =>
            {
                foreach (var m in t.GetMethods())
                {
                    methods.Add(m);
                }
            });

            return methods;
        }

        private static bool IsInherited(this Type t, Type inherited)
        {
            if (t.BaseType == null || t.BaseType == typeof(object))
                return false;

            if (t.BaseType == inherited)
                return true;

            return t.BaseType.IsInherited(inherited);
        }

        private static Type GetRootBaseType(Type t)
        {
            if (t.BaseType == null || t.BaseType == typeof(object))
                return t;
            else
                return GetRootBaseType(t.BaseType);
        }

        public static bool CompareLengthAndTypes(this ParameterInfo[] parameters, params Type[] types)
        {
            if (parameters.Length != types.Length)
                return false;

            for (var i = 0; i < parameters.Length; i++)
            {
                if (parameters[i].ParameterType != types[i])
                {
                    return false;
                }
            }

            return true;
        }

        public static T CreateInstance<T>(string typeName) where T : class
        {
            var type = AppDomain.CurrentDomain.GetAssemblies()
                .Select(a => a.GetTypes().FirstOrDefault(t => t.Name == typeName))
                .FirstOrDefault(t => t != null);
            if (type == null) return null;

            return type.Assembly.CreateInstance(type.FullName) as T;
        }

        private static void ForeachTypeof(Type rootType, Action<Assembly, Type> action)
        {
            foreach (var a in AppDomain.CurrentDomain.GetAssemblies())
            {
                if (a.FullName.IsLeft("Mono.")) continue;
                if (a.FullName.IsLeft("SyntaxTree.")) continue;
                if (a.FullName.IsLeft("nunit.")) continue;
                if (a.FullName.IsLeft("Unity.")) continue;
                if (a.FullName.IsLeft("ICSharpCode.")) continue;
                if (a.FullName.IsLeft("Newtonsoft.")) continue;
                if (a.FullName.IsLeft("Facebook")) continue;
                if (a.FullName.IsLeft("winrt")) continue;
                if (a.FullName.IsLeft("Tizen")) continue;
                if (a.FullName.IsLeft("Apple")) continue;
                if (a.FullName.IsLeft("Security")) continue;
                if (a.FullName.IsLeft("Stores")) continue;
                if (a.FullName.IsLeft("Purchasing.")) continue;
                if (a.FullName.IsLeft("UnityStore")) continue;
                if (a.FullName.IsLeft("Editor")) continue;
                if (a.FullName.IsLeft("ChannelPurchase")) continue;
                if (a.FullName.IsLeft("Google.")) continue;
                if (a.FullName.IsLeft("UnityScript")) continue;
                if (a.FullName.IsLeft("Boo.Lan")) continue;
                if (a.FullName.IsLeft("System")) continue;
                if (a.FullName.IsLeft("I18N")) continue;
                if (a.FullName.IsLeft("UnityEngine")) continue;
                if (a.FullName.IsLeft("UnityEditor")) continue;
                if (a.FullName.IsLeft("mscorlib")) continue;
                if (a.FullName.IsLeft("NiceIO")) continue;
                if (a.FullName.IsLeft("PP")) continue;
                if (a.FullName.IsLeft("PlayerBuild")) continue;
                if (a.FullName.IsLeft("AndroidPlayerBuild")) continue;
                if (a.FullName.IsLeft("Ex")) continue;
                if (a.FullName.IsLeft("ScriptCompilation")) continue;
                if (a.FullName.IsLeft("Anonymously")) continue;

                foreach (var t in a.GetTypes())
                {
                    if (t.IsAbstract) continue;
                    if (t.IsClass == false) continue;
                    if (rootType.IsAssignableFrom(t) == false) continue;

                    action(a, t);
                }
            }
        }
    }
}