// EN: Custom authentication handler for functional tests.
// VI: Authentication handler tùy chỉnh cho functional tests.

using System.Security.Claims;
using System.Text.Encodings.Web;
using Microsoft.AspNetCore.Authentication;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;

namespace OrderService.FunctionalTests;

/// <summary>
/// EN: Test authentication handler that creates a fake authenticated user with configurable claims.
/// VI: Authentication handler test tạo user authenticated giả với claims có thể cấu hình.
/// </summary>
public class TestAuthHandler : AuthenticationHandler<AuthenticationSchemeOptions>
{
    /// <summary>
    /// EN: Authentication scheme name used in tests.
    /// VI: Tên scheme xác thực sử dụng trong tests.
    /// </summary>
    public const string SchemeName = "TestScheme";

    /// <summary>
    /// EN: Default test user ID.
    /// VI: User ID test mặc định.
    /// </summary>
    public static readonly Guid TestUserId = Guid.Parse("11111111-1111-1111-1111-111111111111");

    /// <summary>
    /// EN: Default test merchant ID.
    /// VI: Merchant ID test mặc định.
    /// </summary>
    public static readonly Guid TestMerchantId = Guid.Parse("22222222-2222-2222-2222-222222222222");

    /// <summary>
    /// EN: Default test shop ID.
    /// VI: Shop ID test mặc định.
    /// </summary>
    public static readonly Guid TestShopId = Guid.Parse("33333333-3333-3333-3333-333333333333");

    public TestAuthHandler(
        IOptionsMonitor<AuthenticationSchemeOptions> options,
        ILoggerFactory logger,
        UrlEncoder encoder)
        : base(options, logger, encoder)
    {
    }

    protected override Task<AuthenticateResult> HandleAuthenticateAsync()
    {
        var claims = new[]
        {
            new Claim(ClaimTypes.NameIdentifier, TestUserId.ToString()),
            new Claim("sub", TestUserId.ToString()),
            new Claim("merchant_id", TestMerchantId.ToString()),
            new Claim("shop_id", TestShopId.ToString()),
            new Claim(ClaimTypes.Role, "admin"),
            new Claim("role", "admin"),
        };

        var identity = new ClaimsIdentity(claims, SchemeName);
        var principal = new ClaimsPrincipal(identity);
        var ticket = new AuthenticationTicket(principal, SchemeName);

        return Task.FromResult(AuthenticateResult.Success(ticket));
    }
}
