using System.Text;
using AutobusApi.Application.Common.Interfaces;
using AutobusApi.Infrastructure.Identity;
using AutobusApi.Infrastructure.Services;
using AutoubsApi.Infrastructure.Data;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.IdentityModel.Tokens;

namespace AutobusApi.Infrastructure;

public static class DependencyInjection
{
    public static IServiceCollection AddInfrastructure(this IServiceCollection services, IConfiguration configuration)
    {
        services.AddApplicationDbContext(configuration);
        services.AddIdentity(configuration);
        services.AddServices();
        services.AddAuthentication();

        return services;
    }

    private static IServiceCollection AddApplicationDbContext(this IServiceCollection services, IConfiguration configuration)
    {
        services.AddDbContext<ApplicationDbContext>(options =>
        {
            options.UseNpgsql(
                configuration.GetConnectionString("DefaultConnection"),
                npgsqOptions => npgsqOptions.UseNetTopologySuite()
            );
        });

        services.AddScoped<IApplicationDbContext, ApplicationDbContext>();

        return services;
    }

    private static IServiceCollection AddIdentity(this IServiceCollection services, IConfiguration configuration)
    {

        services.AddDbContext<ApplicationIdentityDbContext>(options =>
        {
            options.UseNpgsql(configuration.GetConnectionString("DefaultConnection"));
        });

        services.AddIdentity<ApplicationUser, IdentityRole<int>>()
            .AddEntityFrameworkStores<ApplicationIdentityDbContext>()
            .AddDefaultTokenProviders();

        return services;
    }

    private static IServiceCollection AddServices(this IServiceCollection services)
    {
        services.AddScoped<IIdentityService, IdentityService>();

        return services;
    }

    private static IServiceCollection AddAuthenticationWithJwt(this IServiceCollection services, IConfiguration configuration)
    {
        services.AddAuthentication(options =>
        {
            options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
            options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
            options.DefaultScheme = JwtBearerDefaults.AuthenticationScheme;
        })
        .AddJwtBearer(options =>
        {
            options.SaveToken = true;
            options.RequireHttpsMetadata = false;
            options.TokenValidationParameters = new TokenValidationParameters()
            {
                ValidateIssuer = true,
                ValidateAudience = true,
                ValidAudience = configuration["Jwt:Audience"],
                ValidIssuer = configuration["Jwt:Issuer"],
                ClockSkew = TimeSpan.Zero,
                IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(configuration["Jwt:IssuerSigningKey"]!))
            };
        });

        return services;
    }
}