using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Diagnostics.HealthChecks;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Microsoft.OpenApi.Models;
using MongoDB.Bson;
using MongoDB.Bson.Serialization;
using MongoDB.Bson.Serialization.Serializers;
using MongoDB.Driver;
using weddingapi.Config;
using weddingapi.Repositories;

namespace weddingapi
{
    public class Startup
    {
        private string MyAllowSpecificOrigins = "defaultCors";

        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            BsonSerializer.RegisterSerializer(new GuidSerializer(BsonType.String));
            BsonSerializer.RegisterSerializer(new DateTimeOffsetSerializer(BsonType.String));
            var mongoDbConfig = Configuration.GetSection(nameof(MongoDbConfig)).Get<MongoDbConfig>();

            services.AddSingleton<IMongoClient>(serviceProvider => 
            {
                return new MongoClient(mongoDbConfig.ConnectionString);
            });

            services.AddSingleton<IFamilyRepository, MongoDBFamilyRepository>();
            services.AddControllers(options => {
                options.SuppressAsyncSuffixInActionNames = false;
            });
            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("v1", new OpenApiInfo { Title = "weddingapi", Version = "v1" });
            });

            services.AddHealthChecks()
                .AddMongoDb(mongoDbConfig.ConnectionString, 
                name: "mongodb", 
                timeout: TimeSpan.FromSeconds(3),
                tags: new[] { "ready" });

            services.AddCors(options =>
            {
                options.AddPolicy(name: MyAllowSpecificOrigins,
                   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", "weddingapi v1"));
            }

            if(env.IsDevelopment())
            {
                app.UseHttpsRedirection();
            }

            app.UseRouting();

            app.UseCors(MyAllowSpecificOrigins);

            app.UseAuthorization();

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

                endpoints.MapHealthChecks("/health/ready", new HealthCheckOptions {
                    Predicate = (check) => check.Tags.Contains("ready")
                });

                endpoints.MapHealthChecks("/health/live", new HealthCheckOptions {
                    Predicate = (_) => false
                });
            });
        }
    }
}