/*
 * Copyright 2016 Game Server Services, Inc. or its affiliates. All Rights
 * Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * or in the "license" file accompanying this file. This file is distributed
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * deny overwrite
 */
// ReSharper disable RedundantNameQualifier
// ReSharper disable RedundantUsingDirective
// ReSharper disable CheckNamespace
// ReSharper disable PartialTypeWithSinglePart
// ReSharper disable MemberCanBePrivate.Global
// ReSharper disable UnusedAutoPropertyAccessor.Global
// ReSharper disable UseObjectOrCollectionInitializer
// ReSharper disable ArrangeThisQualifier
// ReSharper disable NotAccessedField.Local

#pragma warning disable 1998

using System;
using System.Numerics;
using System.Collections;
using System.Reflection;
using Gs2.Core.SpeculativeExecutor;
using Gs2.Core.Domain;
using Gs2.Core.Exception;
using Gs2.Core.Model;
using Gs2.Core.Util;
using Gs2.Gs2Auth.Model;
using Gs2.Gs2Inventory.Request;
#if UNITY_2017_1_OR_NEWER
using UnityEngine;
    #if GS2_ENABLE_UNITASK
using Cysharp.Threading.Tasks;
    #endif
#else
using System.Threading.Tasks;
#endif

namespace Gs2.Gs2Inventory.Domain.SpeculativeExecutor
{
    public static class VerifySimpleItemByUserIdSpeculativeExecutor {

        public static string Action() {
            return "Gs2Inventory:VerifySimpleItemByUserId";
        }

        public static Gs2.Gs2Inventory.Model.SimpleItem Transform(
            Gs2.Core.Domain.Gs2 domain,
            AccessToken accessToken,
            VerifySimpleItemByUserIdRequest request,
            Gs2.Gs2Inventory.Model.SimpleItem item
        ) {
            switch (request.VerifyType) {
                case "less":
                    if (item.Count < request.Count) {
                        throw new BadRequestException(new [] {
                            new RequestError("count", "invalid"),
                        });
                    }
                    break;
                case "lessEqual":
                    if (item.Count <= request.Count) {
                        throw new BadRequestException(new [] {
                            new RequestError("count", "invalid"),
                        });
                    }
                    break;
                case "greater":
                    if (item.Count > request.Count) {
                        throw new BadRequestException(new [] {
                            new RequestError("count", "invalid"),
                        });
                    }
                    break;
                case "greaterEqual":
                    if (item.Count >= request.Count) {
                        throw new BadRequestException(new [] {
                            new RequestError("count", "invalid"),
                        });
                    }
                    break;
                case "equal":
                    if (item.Count == request.Count) {
                        throw new BadRequestException(new [] {
                            new RequestError("count", "invalid"),
                        });
                    }
                    break;
                case "notEqual":
                    if (item.Count != request.Count) {
                        throw new BadRequestException(new [] {
                            new RequestError("count", "invalid"),
                        });
                    }
                    break;
            }
            return item;
        }

#if UNITY_2017_1_OR_NEWER
        public static Gs2Future<Func<object>> ExecuteFuture(
            Gs2.Core.Domain.Gs2 domain,
            AccessToken accessToken,
            VerifySimpleItemByUserIdRequest request
        ) {
            IEnumerator Impl(Gs2Future<Func<object>> result) {

                var future = domain.Inventory.Namespace(
                    request.NamespaceName
                ).AccessToken(
                    accessToken
                ).SimpleInventory(
                    request.InventoryName
                ).SimpleItem(
                    request.ItemName
                ).ModelFuture();
                yield return future;
                if (future.Error != null) {
                    result.OnError(future.Error);
                    yield break;
                }
                var item = future.Result;

                if (item == null) {
                    result.OnComplete(() =>
                    {
                        return null;
                    });
                    yield break;
                }
                try {
                    item = Transform(domain, accessToken, request, item);
                }
                catch (Gs2Exception e) {
                    result.OnError(e);
                    yield break;
                }

                result.OnComplete(() =>
                {
                    return null;
                });
                yield return null;
            }

            return new Gs2InlineFuture<Func<object>>(Impl);
        }
#endif

#if !UNITY_2017_1_OR_NEWER || GS2_ENABLE_UNITASK
    #if UNITY_2017_1_OR_NEWER
        public static async UniTask<Func<object>> ExecuteAsync(
    #else
        public static async Task<Func<object>> ExecuteAsync(
    #endif
            Gs2.Core.Domain.Gs2 domain,
            AccessToken accessToken,
            VerifySimpleItemByUserIdRequest request
        ) {
            var item = await domain.Inventory.Namespace(
                request.NamespaceName
            ).AccessToken(
                accessToken
            ).SimpleInventory(
                request.InventoryName
            ).SimpleItem(
                request.ItemName
            ).ModelAsync();

            if (item == null) {
                return () => null;
            }
            item = Transform(domain, accessToken, request, item);

            return () =>
            {
                return null;
            };
        }
#endif
    }
}