/*
 * T&J Central Bank API
 *
 * API documentation for T&J Central Bank's digital wallets
 *
 * OpenAPI spec version: 1.0.0
 * 
 * Generated by: https://github.com/swagger-api/swagger-codegen.git
 */
using System;
using System.IO;
using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Microsoft.OpenApi.Models;
using Newtonsoft.Json.Converters;
using Newtonsoft.Json.Serialization;
using Swashbuckle.AspNetCore.Swagger;
using Swashbuckle.AspNetCore.SwaggerGen;
using IO.Swagger.Filters;
using IO.Swagger.Security;
using IO.Swagger.Repositories;
using IO.Swagger.Services;
using Microsoft.EntityFrameworkCore;

namespace IO.Swagger
{
    /// <summary>
    /// Startup
    /// </summary>
    public class Startup
    {
        private readonly IWebHostEnvironment _hostingEnv;

        private IConfiguration Configuration { get; }

        /// <summary>
        /// Constructor
        /// </summary>
        /// <param name="env"></param>
        /// <param name="configuration"></param>
        public Startup(IWebHostEnvironment env, IConfiguration configuration)
        {
            _hostingEnv = env;
            Configuration = configuration;
        }

        /// <summary>
        /// This method gets called by the runtime. Use this method to add services to the container.
        /// </summary>
        /// <param name="services"></param>
        public void ConfigureServices(IServiceCollection services)
        {
            // Add framework services.
            services
                .AddMvc(options =>
                {
                    options.InputFormatters.RemoveType<Microsoft.AspNetCore.Mvc.Formatters.SystemTextJsonInputFormatter>();
                    options.OutputFormatters.RemoveType<Microsoft.AspNetCore.Mvc.Formatters.SystemTextJsonOutputFormatter>();
                })
                .AddNewtonsoftJson(opts =>
                {
                    opts.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
                    opts.SerializerSettings.Converters.Add(new StringEnumConverter(new CamelCaseNamingStrategy()));
                })
                .AddXmlSerializerFormatters();

            services.AddAuthentication(BearerAuthenticationHandler.SchemeName)
                .AddScheme<AuthenticationSchemeOptions, BearerAuthenticationHandler>(BearerAuthenticationHandler.SchemeName, null);


            services
                .AddSwaggerGen(c =>
                {
                    c.SwaggerDoc("1.0.0", new OpenApiInfo
                    {
                        Version = "1.0.0",
                        Title = "T&J Central Bank API",
                        Description = "T&J Central Bank API (ASP.NET 7.0)",
                        Contact = new OpenApiContact()
                        {
                            Name = "Swagger Codegen Contributors",
                            Url = new Uri("https://github.com/swagger-api/swagger-codegen"),
                            Email = ""
                        },
                        // TermsOfService = new Uri("")
                    });
                    c.CustomSchemaIds(type => type.FullName);
                    c.IncludeXmlComments($"{AppContext.BaseDirectory}{Path.DirectorySeparatorChar}{_hostingEnv.ApplicationName}.xml");
                    // Sets the basePath property in the Swagger document generated
                    c.DocumentFilter<BasePathFilter>("/v1");

                    // Include DataAnnotation attributes on Controller Action parameters as Swagger validation rules (e.g required, pattern, ..)
                    // Use [ValidateModelState] on Actions to actually validate it in C# as well!
                    c.OperationFilter<GeneratePathParamsValidationFilter>();
                    c.AddSecurityDefinition("bearerAuth", new OpenApiSecurityScheme()
                    {
                        In = ParameterLocation.Header,
                        Description = "Please enter a valid token",
                        Name = "Authorization",
                        Type = SecuritySchemeType.Http,
                        BearerFormat = "JWT",
                        Scheme = "bearer"
                    });
                    c.AddSecurityRequirement(new OpenApiSecurityRequirement()
                    {
                        {
                            new OpenApiSecurityScheme
                            {
                                Reference = new OpenApiReference
                                {
                                    Type=ReferenceType.SecurityScheme,
                                    Id="bearerAuth"
                                }
                            },
                            new string[]{}
                        }
                     });
                });

            string connectionString = Environment.GetEnvironmentVariable("DATABASE_CONNECTION_STRING");

            if (string.IsNullOrEmpty(connectionString))
            {
                throw new Exception("Database connection string not found in environment variable.");
            }
            services.AddScoped<IUserRepository, UserRepository>();
            services.AddDbContext<BankDbContext>(x => x.UseSqlServer(connectionString: connectionString));
            services.AddSingleton<JwtService>();
        }

        /// <summary>
        /// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        /// </summary>
        /// <param name="app"></param>
        /// <param name="env"></param>
        /// <param name="loggerFactory"></param>
        /// <param name="context"></param>
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env, ILoggerFactory loggerFactory, BankDbContext context)
        {
            context.Database.Migrate();
            app.UseRouting();

            //TODO: Uncomment this if you need wwwroot folder
            // app.UseStaticFiles();

            app.UseAuthorization();

            app.UseSwagger();
            app.UseSwaggerUI(c =>
            {
                //TODO: Either use the SwaggerGen generated Swagger contract (generated from C# classes)
                c.SwaggerEndpoint("/swagger/1.0.0/swagger.json", "T&J Central Bank API");

                //TODO: Or alternatively use the original Swagger contract that's included in the static files
                // c.SwaggerEndpoint("/swagger-original.json", "T&J Central Bank API Original");
            });

            //TODO: Use Https Redirection
            // app.UseHttpsRedirection();

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

            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                //TODO: Enable production exception handling (https://docs.microsoft.com/en-us/aspnet/core/fundamentals/error-handling)
                app.UseExceptionHandler("/Error");

                app.UseHsts();
            }
        }
    }
}