using System;
using System.Collections.Generic;
using Luticate2.Utils.Business;
using Luticate2.Utils.DataAccess;
using Luticate2.Utils.DataAccess.Npgsql;
using Luticate2.Utils.Dbo.Basic;
using Luticate2.Utils.Dbo.Filter;
using Luticate2.Utils.Dbo.OrderBy;
using Luticate2.Utils.Dbo.PaginatedRequest;
using Luticate2.Utils.Dbo.Result;
using Luticate2.Utils.Hubs;
using Luticate2.Utils.Interfaces;
using Luticate2.Utils.Middlewares;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore.Query.ExpressionTranslators.Internal;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.DependencyInjection.Extensions;
using Newtonsoft.Json;

namespace Luticate2.Utils.Controllers
{
    public static class LuUtilsExtensions
    {
        public static IServiceCollection AddLuticateUtils(this IServiceCollection services, Action<LuUtilsOptionsDbo> optionsDelegate)
        {
            var settings = new JsonSerializerSettings();
            settings.ContractResolver = new SignalRContractResolver();

            var serializer = JsonSerializer.Create(settings);
            services.Add(new ServiceDescriptor(typeof(JsonSerializer),
                provider => serializer,
                ServiceLifetime.Transient));

            services.AddSignalR(options =>
            {
                options.Hubs.EnableDetailedErrors = true;
            });

            services.AddScoped<LuEfTransactionScope>();
            services.AddSingleton<LuHubConnectionTracker>();
            services.AddSingleton<ILuNotificationsBusiness, LuNotificationsBusiness>();
            services.Configure(optionsDelegate);
            return services;
        }

        public static IServiceCollection AddEntityFrameworkNpgsqlLuticate(this IServiceCollection services)
        {
            services.TryAdd(new ServiceCollection()
                .AddScoped<NpgsqlCompositeMethodCallTranslator, NpgsqlCompositeMethodCallTranslatorLuticate>());
            return services;
        }

        public static IMvcBuilder AddLuticateUtils(this IMvcBuilder builder)
        {
            builder.Services.Configure<MvcOptions>(
                options =>
                {
                    options.ModelBinderProviders.Insert(0, new LuOrderByBinderProvider());
                    options.ModelBinderProviders.Insert(0, new LuFilterBinderProvider());
                    options.ModelBinderProviders.Insert(0, new LuPaginatedRequestBinderProvider());
                    options.Filters.Add(typeof(LuModelStateFilter));
                });
            return builder;
        }

        public static IApplicationBuilder UseLuticateUtils(this IApplicationBuilder app)
        {
            app.UseMiddleware<LuExceptionMiddleware>();

            app.UseWebSockets();
            app.UseSignalR();

            return app;
        }

        public static int GetHttpCode<T>(this LuResult<T> result)
        {
            if (result.Status == LuStatus.Success)
            {
                return 200;
            }
            if (result.Status == LuStatus.InputError)
            {
                return 400;
            }
            if (result.Status == LuStatus.LoginError)
            {
                return 401;
            }
            if (result.Status == LuStatus.PermissionError)
            {
                return 403;
            }
            if (result.Status == LuStatus.NotFound)
            {
                return 404;
            }
            if (result.Status == LuStatus.DbError)
            {
                return 500;
            }
            if (result.Status == LuStatus.FsError)
            {
                return 500;
            }
            if (result.Status == LuStatus.BackendError)
            {
                return 500;
            }
            if (result.Status == LuStatus.InternalError)
            {
                return 500;
            }
            return 418;
        }

        public static string GetHttpString<T>(this LuResult<T> result)
        {
            if (result.Status == LuStatus.Success)
            {
                return "Success";
            }
            if (result.Status == LuStatus.InputError)
            {
                return "Bad User Input";
            }
            if (result.Status == LuStatus.LoginError)
            {
                return "Login Error";
            }
            if (result.Status == LuStatus.PermissionError)
            {
                return "Permission Error";
            }
            if (result.Status == LuStatus.NotFound)
            {
                return "Not Found";
            }
            if (result.Status == LuStatus.DbError)
            {
                return "Internal Error";
            }
            if (result.Status == LuStatus.FsError)
            {
                return "Internal Error";
            }
            if (result.Status == LuStatus.BackendError)
            {
                return "Internal Error";
            }
            if (result.Status == LuStatus.InternalError)
            {
                return "Internal Error";
            }
            return "I'm a teapot";
        }

        public static IDictionary<object, object> GetLuItems(this HttpContext context)
        {
            const string key = "luticateItems";
            if (!context.Items.ContainsKey(key))
            {
                context.Items.Add(key, new Dictionary<object, object>());
            }
            return (IDictionary<object, object>) context.Items[key];
        }
    }
}