Startup.cs

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using MateAPI.Models;
using Microsoft.EntityFrameworkCore;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.IdentityModel.Tokens;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Authorization;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Microsoft.OpenApi.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using MateAPI.repositories;
using MateAPI.Configuration;
using System.Text;

namespace MateAPI
{
    public class Startup
    {
        private readonly IConfiguration _Configuration;
        public Startup(IConfiguration configuration)
        {
            _Configuration = configuration;
        }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {

            //add the db please
            var ConnectionString ="Server=tcp:saifserver2.database.windows.net,1433;Initial Catalog=TmateDB;Persist Security Info=False;User ID=s.katout;Password=Mns@2020;MultipleActiveResultSets=False;Encrypt=True;TrustServerCertificate=False;Connection Timeout=30;";
            services.AddScoped<IMateRepository, MateRepostiroy>();
            services.AddDbContext<Context>(o => o.UseSqlServer(ConnectionString));    
            services.AddControllers();
            JwtConfig jwtConfig = new JwtConfig();
            _Configuration.Bind("JwtConfig", jwtConfig);
            services.AddSingleton(jwtConfig);
            var TokenValidationParameters = new TokenValidationParameters
                {
                    IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(jwtConfig.Secret)),
                    ValidateIssuerSigningKey = true,
                    ClockSkew = TimeSpan.Zero,
                    ValidateAudience = false, 
                    ValidateIssuer = false,
                };
            services.AddSingleton(TokenValidationParameters);
            services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme).AddJwtBearer(o =>
            {
                o.TokenValidationParameters  = TokenValidationParameters;
            });
            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("v1", new OpenApiInfo { Title = "MateAPI", Version = "v1" });
            });
            services.AddCors(options =>
            {
                options.AddPolicy("Open", builder => builder.AllowAnyOrigin().AllowAnyHeader().AllowAnyMethod());
            });

        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseSwagger();
                app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "MateAPI v1"));
            }

            app.UseHttpsRedirection();

            app.UseRouting();

            app.UseAuthentication();
            app.UseAuthorization();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
            });
        }
    }
}