using System.Reflection;
using DbContextLib;
using Entities;
using HeartTrackAPI.Services;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Mvc.Versioning;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Options;
using Microsoft.IdentityModel.Tokens;
using Microsoft.OpenApi.Models;
using Model.Manager;
using Model2Entities;
using StubAPI;
using StubbedContextLib;
using Swashbuckle.AspNetCore.SwaggerGen;

namespace HeartTrackAPI.Utils;

public class AppBootstrap(IConfiguration configuration)
{
    private IConfiguration Configuration { get; } = configuration;

    public void ConfigureServices(IServiceCollection services)
    {
        services.AddControllers();
        services.AddOpenApiDocument();

        services.AddEndpointsApiExplorer();
        AddSwagger(services);
        AddHeartTrackContextServices(services);
        AddModelService(services);
        AddIdentityServices(services, configuration);
        AddApiVersioning(services);
        services.AddHealthChecks();
    }

    private void AddHeartTrackContextServices(IServiceCollection services)
    {
        string? connectionString;

        switch (Environment.GetEnvironmentVariable("TYPE"))
        {
            case "BDD":
                var host = Environment.GetEnvironmentVariable("HOST");
                var port = Environment.GetEnvironmentVariable("PORTDB");
                var database = Environment.GetEnvironmentVariable("DATABASE");
                var username = Environment.GetEnvironmentVariable("USERNAME");
                var password = Environment.GetEnvironmentVariable("PASSWORD");

                connectionString = $"Server={host};port={port};database={database};user={username};password={password}";
                Console.WriteLine("========RUNNING USING THE MYSQL SERVER==============");
                Console.WriteLine(connectionString);
                Console.WriteLine("====================================================");
                services.AddDbContext<HeartTrackContext>(options =>
                        options.UseMySql($"{connectionString}", new MySqlServerVersion(new Version(10, 11, 1)))
                    , ServiceLifetime.Singleton);
                break;
            default:
                Console.WriteLine("====== RUNNING USING THE IN SQLITE DATABASE ======");
                connectionString = Configuration.GetConnectionString("HeartTrackAuthConnection");
                Console.WriteLine(connectionString);
                if (!string.IsNullOrWhiteSpace(connectionString))
                {
                    services.AddDbContext<TrainingStubbedContext>(options =>
                        options.UseSqlite(connectionString), ServiceLifetime.Singleton);
                }
                else
                {
                    services.AddDbContext<TrainingStubbedContext>();
                }

                break;
        }
    }

    private void AddModelService(IServiceCollection services)
    {
        switch (Environment.GetEnvironmentVariable("TYPE"))
        {
            case "BDD":
                services.AddSingleton<IDataManager>(provider =>
                    new DbDataManager(provider.GetRequiredService<HeartTrackContext>()));
                break;
            case "STUB-MODEL":
                services.AddSingleton<IDataManager, StubData>();
                break;
            default:
                services.AddSingleton<IDataManager>(provider =>
                {
                    provider.GetRequiredService<TrainingStubbedContext>().Database.EnsureCreated();
                    return new DbDataManager(provider.GetRequiredService<TrainingStubbedContext>());
                });

                // services.AddSingleton<IDataManager>(provider => new DbDataManager(provider.GetRequiredService<TrainingStubbedContext>())); 
                break;
        }
        // Auth
        
        services.AddScoped<ITokenService, TokenService>();
    }

    private void AddIdentityServices(IServiceCollection services, IConfiguration config)
    {
        /*services.AddAuthorization();
        services.AddIdentityApiEndpoints<AthleteEntity>()
            .AddEntityFrameworkStores<TrainingStubbedContext>();*/

        var identityBuilder = services.AddIdentity<AthleteEntity, IdentityRole<int>>(options =>
        {
            options.Password.RequireDigit = true;
            options.Password.RequireLowercase = true;
            options.Password.RequireUppercase = true;
            options.Password.RequireNonAlphanumeric = true;
            options.Password.RequiredLength = 8;
        });

        if (Environment.GetEnvironmentVariable("TYPE") == "BDD")
        {
            identityBuilder.AddEntityFrameworkStores<HeartTrackContext>();
        }
        else
        {
            identityBuilder.AddEntityFrameworkStores<TrainingStubbedContext>();
        }

        services.AddAuthentication(options =>
        {
            options.DefaultAuthenticateScheme =
                options.DefaultChallengeScheme =
                    options.DefaultForbidScheme =
                        options.DefaultScheme =
                            options.DefaultSignInScheme =
                                options.DefaultSignOutScheme = JwtBearerDefaults.AuthenticationScheme;
        }).AddJwtBearer(options =>
        {
            options.TokenValidationParameters = new TokenValidationParameters
            {
                ValidateIssuer = true,
                ValidIssuer =config["JWT:Issuer"],
                ValidateAudience = true,
                ValidAudience = config["JWT:Audience"],
                ValidateIssuerSigningKey = true,
                IssuerSigningKey = new SymmetricSecurityKey(
                    System.Text.Encoding.UTF8.GetBytes(config["JWT:SigningKey"])
                )
            };
        });

        /*
        app.UseCors(x => x
            .AllowAnyMethod()
            .AllowAnyHeader()
            .AllowCredentials()
            //.WithOrigins("https://localhost:44351))
            .SetIsOriginAllowed(origin => true));*/

//        services.AddTransient<IEmailSender<AthleteEntity>, EmailSender>();
        //     services.AddAuthorization();

//        services.AddIdentityApiEndpoints<AthleteEntity>()
        //          .AddEntityFrameworkStores<HeartTrackContext>();
        //  .AddEntityFrameworkStores<AuthDbContext>().AddDefaultTokenProviders();
    }

    private void AddApiVersioning(IServiceCollection services)
    {
        services.AddApiVersioning(opt =>
        {
            opt.ReportApiVersions = true;
            opt.AssumeDefaultVersionWhenUnspecified = true;
            opt.DefaultApiVersion = new Microsoft.AspNetCore.Mvc.ApiVersion(1, 0);
            opt.ApiVersionReader = ApiVersionReader.Combine(new UrlSegmentApiVersionReader(),
                new HeaderApiVersionReader("x-api-version"),
                new MediaTypeApiVersionReader("x-api-version"));
        });
    }

    private void AddSwagger(IServiceCollection services)
    {
        services.AddSwaggerGen(options =>
        {
            var xmlFile = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
            var xmlPath = Path.Combine(AppContext.BaseDirectory, xmlFile);
            options.IncludeXmlComments(xmlPath);

            options.AddSecurityDefinition("Bearer", new OpenApiSecurityScheme
            {
                Description =
                    "JWT Authorization header using the Bearer scheme. Example: \"Authorization: Bearer {token}\"",
                Name = "Authorization",
                In = ParameterLocation.Header,
                Type = SecuritySchemeType.Http,
                Scheme = "Bearer",
                BearerFormat = "JWT"
            });
            var scheme = new OpenApiSecurityRequirement
            {
                {
                    new OpenApiSecurityScheme
                    {
                        Reference = new OpenApiReference
                        {
                            Type = ReferenceType.SecurityScheme,
                            Id = "Bearer"
                        },
                        Scheme = "oauth2",
                        Name = "Bearer",
                        In = ParameterLocation.Header,
                    },
                    new List<string>()
                }
            };

            options.AddSecurityRequirement(scheme);
            options.OperationFilter<SwaggerDefaultValues>();
        });
        services.AddTransient<IConfigureOptions<SwaggerGenOptions>, SwaggerOptions>();

        services.AddVersionedApiExplorer(setup =>
        {
            setup.GroupNameFormat = "'v'VVV";
            setup.SubstituteApiVersionInUrl = true;
        });
    }

    public void Configure(WebApplication app, IWebHostEnvironment env)
    {
        app.UseHttpsRedirection();

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

//        app.MapIdentityApi<AthleteEntity>();

        app.MapControllers();

        app.MapHealthChecks("/health");

        // Configure the HTTP request pipeline.
        if (true)
        {
            app.UseSwagger(options =>
            {
                options.PreSerializeFilters.Add((swagger, httpReq) =>
                {
                    if (httpReq.Headers.ContainsKey("X-Forwarded-Host"))
                    {
                        string basePath;
                        switch (Environment.GetEnvironmentVariable("TYPE")) // httpReq.Host.Value
                        {
                            case "STUB":
                                basePath = "containers/HeartDev-heart_stub";
                                break;
                            case "BDD":
                                basePath = "containers/HeartDev-api";
                                break;
                            default:
                                basePath = httpReq.Host.Value;
                                break;
                        }

                        var serverUrl = $"https://{httpReq.Headers["X-Forwarded-Host"]}/{basePath}";
                        swagger.Servers = new List<OpenApiServer> { new() { Url = serverUrl } };
                    }
                });
            });
            app.UseOpenApi();
            app.UseSwaggerUI();
            app.MapSwagger();
        }
    }
}