// <copyright file="IdentityProvider.cs" company="alveus.dev">
// Copyright (c) alveus.dev. All rights reserved. Licensed under the MIT License.
// </copyright>

using System.Security.Claims;
using Astral.Services.Constants;
using Astral.Services.Interfaces;
using Injectio.Attributes;

namespace Astral.ApiServer.Providers;

/// <inheritdoc />
[RegisterScoped]
public class IdentityProvider : IIdentityProvider
{
    /// <summary>
    /// Initializes a new instance of the <see cref="IdentityProvider"/> class.
    /// </summary>
    /// <param name="httpContextAccessor">Instance of <see cref="IHttpContextAccessor"/>.</param>
    public IdentityProvider(IHttpContextAccessor httpContextAccessor)
    {
        var claims = httpContextAccessor.HttpContext?.User.Claims;
        if (claims is not null)
        {
            Claims = claims;
        }
    }

    /// <summary>
    /// Session claims.
    /// </summary>
    private IEnumerable<Claim> Claims { get; set; }

    /// <inheritdoc />
    public Guid GetUserId()
    {
        return Guid.TryParse(Claims.FirstOrDefault(c => c.Type == ClaimIds.UserId)?.Value, out var guid) ? guid : Guid.Empty;
    }

    /// <inheritdoc />
    public string GetUserName()
    {
        return Claims.FirstOrDefault(c => c.Type == ClaimIds.UserName)?.Value;
    }
}