using System.Reflection;
using Microsoft.EntityFrameworkCore;
using Microsoft.IdentityModel.Tokens;
using Microsoft.OpenApi.Models;
using Newtonsoft.Json.Converters;
using TURN.Services.Chess.DBModel;

namespace TURN.Services.Chess
{
    public class Startup
    {
        public void ConfigureServices(IServiceCollection services)
        {
            ConfigureSwagger(services);
            ConfigureAuthorization(services);
            _ = services.AddControllers();
            _ = services.AddControllers().AddNewtonsoftJson(jsonOptions =>
            {
                jsonOptions.SerializerSettings.Converters.Add(new StringEnumConverter());
            });
            _ = services.AddDbContext<ModelBaseContext>(
                    options => options.UseNpgsql(Environment.GetEnvironmentVariable("DB")));
        }

        public void Configure(IApplicationBuilder app)
        {
            _ = app.UseRouting();
            _ = app.UseAuthentication();
            _ = app.UseAuthorization();
            _ = app.UseSwagger();
            _ = app.UseSwaggerUI();
            _ = app.UseEndpoints(endpoints =>
            {
                _ = endpoints.MapControllers();
                _ = endpoints.MapControllerRoute(
                        name: "default",
                        pattern: "{controller}/{action}");
                _ = endpoints.MapSwagger();
            });
        }

        private void ConfigureSwagger(IServiceCollection services)
        {
            _ = services.AddSwaggerGen(options =>
            {
                options.SwaggerDoc("v1", new OpenApiInfo
                {
                    Title = "TURN.Api.Swagger",
                    Version = "v1"
                });
                string xmlFilename = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
                options.IncludeXmlComments(Path.Combine(AppContext.BaseDirectory, xmlFilename));
            });
            _ = services.AddSwaggerGenNewtonsoftSupport();
        }

        private void ConfigureAuthorization(IServiceCollection services)
        {
            _ = services.AddAuthentication()
                .AddJwtBearer(options =>
                {
                    options.TokenValidationParameters = new TokenValidationParameters
                    {
                        ValidateIssuer = true,
                        ValidIssuer = AuthOptions.ISSUER,
                        ValidateAudience = true,
                        ValidAudience = AuthOptions.AUDIENCE,
                        ValidateLifetime = true,
                        IssuerSigningKey = AuthOptions.GetSymmetricSecurityKey(),
                        ValidateIssuerSigningKey = true,
                    };
                });
            _ = services.AddAuthorization();
        }
    }
}