ANTOOZA-BACKEND/Application/Features/Director/Role/Permissions/Get/Handler.cs

using Application.Abstractions.Messaging;
using Application.Abstractions.Identity;
using SharedKernel.Constants;
using System.Data;

namespace Application.Features.Director.Role.Permissions.Get;

public sealed class Handler(IIdentityRoleReader roleReader) : IQueryHandler<Query, Response>
{
    public async Task<Response> Handle(Query request, CancellationToken ct)
    {
        var roleAndClaims = await roleReader.GetRoleAsync(request.RoleID, ct);
        if (roleAndClaims is null)
        {
            throw new DataException($"Role with ID '{request.RoleID}' not found.");
        }

        string[] DefaultActions = { "Create", "View", "Edit", "Delete" };
        var groups = new List<Response.PermissionGroup>();
        var menus = Menus.GetMenus();

        void Traverse(Menu menu, string? parentName = null)
        {
            var fullGroupName = string.IsNullOrWhiteSpace(parentName) ? menu.Name : $"{parentName} - {menu.Name}";
            var fullName = string.IsNullOrWhiteSpace(parentName) ? $"{menu.Name}.{menu.Id}" : $"{parentName} - {menu.Name}.{menu.Id}";

            // 권한 그룹 생성
            if (!string.IsNullOrWhiteSpace(menu.Path) || (menu.Children != null && menu.Children.Count > 0))
            {
                groups.Add(new Response.PermissionGroup
                {
                    GroupName = fullGroupName,
                    Permissions = [..DefaultActions.Select(action =>
                    {
                        var permission = $"Permissions.{fullName}.{action}";

                        return new Response.PermissionGroup.Checkbox {
                            DisplayValue = permission,
                            IsSelected = roleAndClaims.Claims.Contains(permission)
                        };
                    })]
                });
            }

            if (menu.Children != null)
            {
                foreach (var child in menu.Children)
                {
                    Traverse(child, menu.Name);
                }
            }
        }

        foreach (var menu in menus)
        {
            Traverse(menu);
        }

        return new Response {
            RoleID = roleAndClaims.ID,
            RoleName = roleAndClaims.Name,
            RoleClaims = groups
        };
    }
}