using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Server.Kestrel.Core;
using Microsoft.Extensions.DependencyInjection;
using System;
using System.Text.Encodings.Web;
using System.Text.Json;
using System.Text.Unicode;

namespace Yunda.ISAS.DataMonitoringServer.WebApi
{
    public class WebApiStartup
    {
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvc().AddJsonOptions(options =>
            {
                //格式化日期时间格式
                options.JsonSerializerOptions.Converters.Add(new DatetimeJsonConverter());
                //数据格式首字母小写
                options.JsonSerializerOptions.PropertyNamingPolicy = JsonNamingPolicy.CamelCase;
                //数据格式原样输出
                //options.JsonSerializerOptions.PropertyNamingPolicy = null;
                //取消Unicode编码
                options.JsonSerializerOptions.Encoder = JavaScriptEncoder.Create(UnicodeRanges.All);
                //忽略空值
                options.JsonSerializerOptions.IgnoreNullValues = true;
                //允许额外符号
                options.JsonSerializerOptions.AllowTrailingCommas = true;
                //反序列化过程中属性名称是否使用不区分大小写的比较
                options.JsonSerializerOptions.PropertyNameCaseInsensitive = false;
            }); ;
            // If using Kestrel:
            //services.AddSingleton();
            services.Configure<KestrelServerOptions>(options =>
            {
                options.AllowSynchronousIO = true;
            });
        }

        public void Configure(IApplicationBuilder app)
        {
            app.UseRouting();
            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllerRoute("default", "{controller=Home}/{action=Index}/{id?}");
                //区域路由
                endpoints.MapAreaControllerRoute(
                 name: "areas",
                 areaName: "areas",
                 pattern: "{area:exists}/{controller=Home}/{action=Index}/{id?}");
            });
            app.Run(context =>
            {
                return context.Response.WriteAsync("datamonitor webapi startup !",encoding:System.Text.Encoding.Unicode);
            });
        }
    }
    public class DatetimeJsonConverter : System.Text.Json.Serialization.JsonConverter<DateTime>
    {
        public override DateTime Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
        {
            if (reader.TokenType == JsonTokenType.String)
            {
                if (DateTime.TryParse(reader.GetString(), out DateTime date))
                    return date;
            }
            return reader.GetDateTime();
        }

        public override void Write(Utf8JsonWriter writer, DateTime value, JsonSerializerOptions options)
        {
            writer.WriteStringValue(value.ToString("yyyy-MM-dd HH:mm:ss"));
        }
    }
}