using System.Security.Claims;
using SeaHaven.DataServices.Interfaces;
using SeaHaven.Services.Constants;
using SeaHaven.Services.DTOs;
using SeaHaven.Services.Interfaces;

namespace SeaHaven.Services.Helpers
{
    /// <summary>
    /// Shared gate for creating an uplift and uploading its evidence. Both paths load the
    /// caller's database role and overrides, then require <see cref="TeamPermissionKeys.RequestUplifts"/>.
    /// </summary>
    public static class WorkOrderUpliftRequestAuthorization
    {
        public static async Task EnsureCanRequestUpliftAsync(
            ITeamPermissionOverrideDataService permissionUsers,
            ITeamPermissionPolicy permissionPolicy,
            ClaimsPrincipal user,
            CancellationToken cancellationToken)
        {
            var userId = user.FindFirstValue(ClaimTypes.NameIdentifier);
            var permissionUser = string.IsNullOrWhiteSpace(userId)
                ? null
                : await permissionUsers.GetUserAsync(userId, cancellationToken);

            if (permissionUser is null)
            {
                throw new UpliftForbiddenException(
                    UpliftForbiddenException.RequestUpliftsDeniedMessage);
            }

            if (!permissionPolicy.IsAllowed(
                    permissionUser.RoleName,
                    TeamPermissionKeys.RequestUplifts,
                    permissionUser.Overrides))
            {
                throw new UpliftForbiddenException(
                    UpliftForbiddenException.RequestUpliftsDeniedMessage);
            }
        }
    }
}