using Autodesk.Revit.DB;
using Autodesk.Revit.DB.ExtensibleStorage;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace FWindSoft.Revit.ExtensibleStorage
{
    /*
     * 可能只能存储，几个kb的值
     * 1、Schema需要一次创建，创建完成之后不能再进行修改
     * 2、api可用性很高，暂时简单封装
     */
    public static class ExtensibleStorageExtension
    {
        #region 基础扩展数据操作
        public static void SetExtendData<T>(this Element element, SchemaItem schemaItem, T value)
        {
            var guid = schemaItem.SchemaGuid;
            var schemaName = schemaItem.SchemaName;
            var fileName = schemaItem.FileName;
            Schema schema = Schema.Lookup(guid);
            if (schema == null)
            {
                SchemaBuilder schemaBuilder = new SchemaBuilder(guid);
                schemaBuilder.SetReadAccessLevel(AccessLevel.Public);
                schemaBuilder.SetWriteAccessLevel(AccessLevel.Public);
                //这个应该和上面重复吧
                schemaBuilder.SetSchemaName(schemaName);
                FieldBuilder fieldBuilder = schemaBuilder.AddSimpleField(fileName, typeof(T));
                schema = schemaBuilder.Finish();
            }
            Entity entity = new Entity(schema);
            Field field = schema.GetField(fileName);
            entity.Set<T>(field, value);
            element.SetEntity(entity);
        }

        public static void SetExtendData<T>(this Element element, SchemaItem schemaItem, IList<T> values)
        {
            var guid = schemaItem.SchemaGuid;
            var schemaName = schemaItem.SchemaName;
            var fileName = schemaItem.FileName;
            Schema schema = Schema.Lookup(guid);
            if (schema == null)
            {
                SchemaBuilder schemaBuilder = new SchemaBuilder(guid);
                schemaBuilder.SetReadAccessLevel(AccessLevel.Public);
                schemaBuilder.SetWriteAccessLevel(AccessLevel.Public);
                schemaBuilder.SetSchemaName(schemaName);
                FieldBuilder fieldBuilder = schemaBuilder.AddArrayField(fileName, typeof(T));
                schema = schemaBuilder.Finish();
            }
            Entity entity = new Entity(schema);
            Field field = schema.GetField(fileName);
            entity.Set<IList<T>>(field, values);
            element.SetEntity(entity);
        }

        public static void SetExtendData<T, V>(this Element element, SchemaItem schemaItem, IDictionary<T, V> dict)
        {
            var guid = schemaItem.SchemaGuid;
            var schemaName = schemaItem.SchemaName;
            var fileName = schemaItem.FileName;
            Schema schema = Schema.Lookup(guid);
            if (schema == null)
            {
                SchemaBuilder schemaBuilder = new SchemaBuilder(guid);
                schemaBuilder.SetReadAccessLevel(AccessLevel.Public);
                schemaBuilder.SetWriteAccessLevel(AccessLevel.Public);
                schemaBuilder.SetSchemaName(schemaName);
                FieldBuilder fieldBuilder = schemaBuilder.AddMapField(fileName, typeof(T), typeof(V));
                schema = schemaBuilder.Finish();
            }
            Entity entity = new Entity(schema);
            Field field = schema.GetField(fileName);
            entity.Set<IDictionary<T, V>>(field, dict);
            element.SetEntity(entity);
        }


        public static T GetExtendData<T>(this Element element, SchemaItem schemaItem)
        {
            var guid = schemaItem.SchemaGuid;
            var schemaName = schemaItem.SchemaName;
            var fileName = schemaItem.FileName;
            Schema schema = Schema.Lookup(guid);
            if (schema != null)
            {
                Entity entity = element.GetEntity(schema);
                if (entity.Schema == null)
                {
                    return default(T);
                }
                Field field = schema.GetField(fileName);
                if (!entity.RecognizedField(field))
                {
                    return default(T);
                }
                return entity.Get<T>(field);
            }
            return default(T);
        }

        public static List<T> GetExtendDatas<T>(this Element element, SchemaItem schemaItem)
        {
            var guid = schemaItem.SchemaGuid;
            var fileName = schemaItem.FileName;
            Schema schema = Schema.Lookup(guid);
            if (schema != null)
            {
                Entity entity = element.GetEntity(schema);
                Field field = schema.GetField(fileName);
                return entity.Get<IList<T>>(field).ToList();
            }
            return null;
        }

        public static Dictionary<T, TU> GetExtendData<T, TU>(this Element element, SchemaItem schemaItem)
        {
            var guid = schemaItem.SchemaGuid;
            var schemaName = schemaItem.SchemaName;
            var fileName = schemaItem.FileName;
            Schema schema = Schema.Lookup(guid);
            if (schema != null)
            {
                Entity entity = element.GetEntity(schema);
                Field field = schema.GetField(fileName);
                return entity.Get<IDictionary<T, TU>>(field) as Dictionary<T, TU>;
            }
            return null;
        }
        #endregion

        /// <summary>
        /// 删除扩展数据
        /// </summary>
        /// <param name="element"></param>
        /// <param name="guid"></param>
        public static void DeleteStorageData(this Element element, Guid guid)
        {
            Schema schema = Schema.Lookup(guid);
            if (schema != null)
            {
                element.DeleteEntity(schema);
            }
        }

        /// <summary>
        /// 存储简单对象数据
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="element"></param>
        /// <param name="value"></param>
        public static void SetSimpleClass<T>(this Element element, T value)
        {
            var useType = typeof(T);
            Guid guid = useType.GUID;
            Schema schema = Schema.Lookup(guid);

            #region 初始化属性集合

            List<Tuple<string, Type, object>> useProperties = new List<Tuple<string, Type, object>>();
            if (ExtensibleStorageUtil.IsCoustomStorage(useType))
            {
                var useValue = ((ICoustomStorage)value).GetStorage();
                var propertyType = useValue.GetType();
                useProperties.Add(new Tuple<string, Type, object>(useType.Name, propertyType, useValue));
            }
            else
            {
                var properties = useType.GetProperties();
                foreach (var propertyInfo in properties)
                {
                    var propertyType = propertyInfo.PropertyType;
                    var useValue = propertyInfo.GetValue(value);
                    useProperties.Add(new Tuple<string, Type, object>(propertyInfo.Name, propertyType, useValue));
                }
            }

            #endregion

            #region 创建结构
            if (schema == null)
            {
                #region 创建Schema

                SchemaBuilder schemaBuilder = new SchemaBuilder(guid);
                schemaBuilder.SetReadAccessLevel(AccessLevel.Public);
                schemaBuilder.SetWriteAccessLevel(AccessLevel.Public);
                schemaBuilder.SetSchemaName(useType.Name);

                #endregion

                foreach (var item in useProperties)
                {
                    var propertyType = item.Item2;
                    if (ExtensibleStorageUtil.IsEffectiveContent(propertyType))
                    {
                        FieldBuilder fieldBuilder = schemaBuilder.AddSimpleField(item.Item1, propertyType);
                    }
                    else if (ExtensibleStorageUtil.IsEffectiveArray(propertyType, out Type arryContentType))
                    {
                        FieldBuilder fieldBuilder = schemaBuilder.AddArrayField(item.Item1, arryContentType);
                    }
                    else if (ExtensibleStorageUtil.IsEffectiveMap(propertyType, out Type keyType, out Type valueType))
                    {
                        FieldBuilder fieldBuilder = schemaBuilder.AddMapField(item.Item1, keyType, valueType);
                    }
                }

                schema = schemaBuilder.Finish();
            }
            #endregion

            #region 创建对象
            Entity entity = new Entity(schema);
            var method = ExtensibleStorageUtil.GetEntitySetMethod();
            foreach (var item in useProperties)
            {
                var field = schema.GetField(item.Item1);
                if (field == null)
                    continue;
                var fieldType = ExtensibleStorageUtil.GetFileType(field);
                MethodInfo mi = method.MakeGenericMethod(fieldType);
                var useValue = item.Item3;
                if (useValue != null)
                {
                    mi.Invoke(entity, new object[] { item.Item1, useValue });
                }
            }
            #endregion
            element.SetEntity(entity);
        }

        /// <summary>
        /// 获取简单对象数据
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="element"></param>
        public static T GetSimpleClass<T>(this Element element)
        {
            var useType = typeof(T);
            Guid guid = useType.GUID;
            Schema schema = Schema.Lookup(guid);
            if (schema == null)
            {
                return default(T);
            }
            Entity entity = element.GetEntity(schema);
            if (entity?.Schema == null)
            {
                return default(T);
            }
            var fields = schema.ListFields();
            #region 创建实体对象
            T result = default(T);
            if (fields.Any())
            {
                var cons = useType.GetConstructor(Type.EmptyTypes);
                if (cons != null)
                {
                    result = (T)cons.Invoke(null);
                }
            }

            if (result == null)
            {
                return default(T);
            }
            #endregion

            var getMethod = typeof(Entity).GetMethod("Get", new Type[] { typeof(string) });
            if (ExtensibleStorageUtil.IsCoustomStorage(useType))
            {
                var field = fields.FirstOrDefault(f => f.FieldName == useType.Name);
                if (field != null)
                {
                    var useValueType = field.ValueType;
                    if (field.ContainerType == ContainerType.Array)
                    {
                        useValueType = typeof(IList<>).MakeGenericType(field.ValueType);
                    }
                    else if (field.ContainerType == ContainerType.Map)
                    {
                        useValueType = typeof(IDictionary<,>).MakeGenericType(field.KeyType, field.ValueType);
                    }
                    MethodInfo mi = getMethod.MakeGenericMethod(useValueType);
                    var useValue = mi.Invoke(entity, new object[] { field.FieldName });
                    ((ICoustomStorage)result).SetStorage(useValue);
                }
            }
            else
            {
                foreach (var field in fields)
                {
                    try
                    {
                        var property = useType.GetProperty(field.FieldName);

                        if (property != null)
                        {
                            MethodInfo mi = getMethod.MakeGenericMethod(property.PropertyType);
                            var useValue = mi.Invoke(entity, new object[] { field.FieldName });
                            property.SetValue(result, useValue);
                        }
                    }
                    catch (Exception)
                    {


                    }
                }

            }

            return result;
        }
    }
    public class SchemaItem
    {
        public Guid SchemaGuid { get; set; }
        public string SchemaName { get; set; }
        public string FileName { get; set; }
    }
}