using DD.Persistence.Models.Configurations;
using Microsoft.Extensions.Configuration;
using Microsoft.IdentityModel.Tokens;
using System.IdentityModel.Tokens.Jwt;
using System.Net.Http.Headers;
using System.Security.Claims;
using System.Text.Json;

namespace DD.Persistence.IntegrationTests;

/// <summary>
///  Класс, позволяющий генерировать api-token
/// </summary>
public static class ApiTokenHelper
{
    /// <summary>
    /// Метод авторизации
    /// </summary>
    /// <param name="httpClient"></param>
    /// <param name="configuration"></param>
    /// <returns></returns>
    public static void Authorize(this HttpClient httpClient, IConfiguration configuration)
    {
        var authUser = configuration
            .GetSection(nameof(AuthUser))
            .Get<AuthUser>()!;

        var jwtToken = authUser.CreateDefaultJwtToken();

        httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", jwtToken);
    }

    /// <summary>
    /// Авторизация через собственный jwt-токен
    /// </summary>
    /// <param name="authUser"></param>
    /// <returns></returns>
	private static string CreateDefaultJwtToken(this AuthUser authUser)
    {
        var nameIdetifier = Guid.NewGuid().ToString();
        var claims = new List<Claim>()
        {
            new(ClaimTypes.NameIdentifier, nameIdetifier),
            new("client_id", authUser.ClientId),
            new("username", authUser.Username),
            new("password", authUser.Password),
            new("grant_type", authUser.GrantType),
            new(ClaimTypes.NameIdentifier.ToString(), Guid.NewGuid().ToString())
        };

        var tokenDescriptor = new SecurityTokenDescriptor
        {
            Issuer = JwtParams.Issuer,
            Audience = JwtParams.Audience,
            Subject = new ClaimsIdentity(claims),
            Expires = DateTime.UtcNow.AddHours(1),
            SigningCredentials = new SigningCredentials(JwtParams.SecurityKey, SecurityAlgorithms.HmacSha256Signature)
        };
        var tokenHandler = new JwtSecurityTokenHandler();
        var token = tokenHandler.CreateToken(tokenDescriptor);
        return tokenHandler.WriteToken(token);
    }
}