RbacAccessPermissionHelper.cs
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using System.Text.Json;
namespace FoodLabeling.Application.Helpers;
/// <summary>
/// accessPermissions 与 Menu.PermissionCode / Router 的解析辅助。
/// </summary>
public static class RbacAccessPermissionHelper
{
/// <summary>
/// 从路由推导权限码：/labels → menu.labels；/account-management → menu.account-management
/// </summary>
public static string? DerivePermissionCodeFromRouter(string? router)
{
var r = router?.Trim();
if (string.IsNullOrEmpty(r))
{
return null;
}
var path = r.TrimEnd('/');
if (path.Length == 0)
{
return null;
}
var segments = path.Split('/', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
if (segments.Length == 0)
{
return null;
}
return "menu." + string.Join(".", segments.Select(s => s.ToLowerInvariant()));
}
/// <summary>
/// 优先使用 PermissionCode；为空时按 Router 推导（与回填 SQL 规则一致）。
/// </summary>
public static string? GetEffectivePermissionCode(string? permissionCode, string? router)
{
if (!string.IsNullOrWhiteSpace(permissionCode))
{
return permissionCode.Trim();
}
return DerivePermissionCodeFromRouter(router);
}
/// <summary>
/// 解析 accessPermissions 入参：支持 JSON 数组字符串（如 <c>["manage_labels"]</c>）、英文逗号分隔。
/// </summary>
public static List<string> ParseAccessPermissionCodes(string accessPermissions)
{
var raw = accessPermissions?.Trim();
if (string.IsNullOrWhiteSpace(raw))
{
return new List<string>();
}
if (raw.StartsWith('['))
{
try
{
var fromJson = JsonSerializer.Deserialize<List<string>>(raw);
if (fromJson is { Count: > 0 })
{
return fromJson
.Where(c => !string.IsNullOrWhiteSpace(c))
.Select(c => c.Trim())
.Distinct(StringComparer.OrdinalIgnoreCase)
.ToList();
}
}
catch
{
// fall through to delimiter split
}
}
return raw
.Split(new[] { ',', ';', '\n', '\r' }, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
.Where(c => !string.IsNullOrWhiteSpace(c))
.Select(c => c.Trim())
.Distinct(StringComparer.OrdinalIgnoreCase)
.ToList();
}
}