using System.Security.Claims;
using FictionArchive.Service.UserService.Models.DTOs;
using FictionArchive.Service.UserService.Services;
using HotChocolate.Authorization;
using HotChocolate.Types;

namespace FictionArchive.Service.UserService.GraphQL;

public class Mutation
{
    [Authorize]
    [Error<InvalidOperationException>]
    public async Task<UserDto> InviteUser(
        string email,
        string username,
        UserManagementService userManagementService,
        ClaimsPrincipal claimsPrincipal)
    {
        // Get the current user's OAuth provider ID from claims
        var oAuthProviderId = claimsPrincipal.FindFirst("sub")?.Value;
        if (string.IsNullOrEmpty(oAuthProviderId))
        {
            throw new InvalidOperationException("Unable to determine current user identity");
        }

        // Get the inviter from the database
        var inviter = await userManagementService.GetUserByOAuthProviderIdAsync(oAuthProviderId);
        if (inviter == null)
        {
            throw new InvalidOperationException("Current user not found in the system");
        }

        // Invite the new user
        var newUser = await userManagementService.InviteUserAsync(inviter, email, username);
        if (newUser == null)
        {
            throw new InvalidOperationException(
                "Failed to invite user. Either you have no available invites, or the email/username is already in use.");
        }

        return new UserDto
        {
            Id = newUser.Id,
            CreatedTime = newUser.CreatedTime,
            LastUpdatedTime = newUser.LastUpdatedTime,
            Username = newUser.Username,
            Email = newUser.Email,
            Disabled = newUser.Disabled,
            AvailableInvites = newUser.AvailableInvites,
            InviterId = newUser.InviterId
        };
    }
}