Added PermissionService and added docs to all methods with potential user contact

HopFrame.Security/Services/PermissionService.cs

@@ -0,0 +1,60 @@
+using HopFrame.Database;
+using HopFrame.Security.Authorization;
+using HopFrame.Security.Claims;
+using Microsoft.EntityFrameworkCore;
+
+namespace HopFrame.Security.Services;
+
+internal class PermissionService<TDbContext>(TDbContext context, ITokenContext current) : IPermissionService where TDbContext : HopDbContextBase {
+    public async Task<bool> HasPermission(string permission) {
+        return await HasPermission(permission, current.User.Id);
+    }
+
+    public async Task<bool> HasPermissions(params string[] permissions) {
+        var user = current.User.Id.ToString();
+        var perms = await GetFullPermissions(user);
+        
+        foreach (var permission in permissions) {
+            if (!PermissionValidator.IncludesPermission(permission, perms)) return false;
+        }
+
+        return true;
+    }
+
+    public async Task<bool> HasAnyPermission(params string[] permissions) {
+        var user = current.User.Id.ToString();
+        var perms = await GetFullPermissions(user);
+        
+        foreach (var permission in permissions) {
+            if (PermissionValidator.IncludesPermission(permission, perms)) return true;
+        }
+
+        return false;
+    }
+
+    public async Task<bool> HasPermission(string permission, Guid user) {
+        var permissions = await GetFullPermissions(user.ToString());
+
+        return PermissionValidator.IncludesPermission(permission, permissions);
+    }
+
+    private async Task<string[]> GetFullPermissions(string user) {
+        var permissions = await context.Permissions
+            .Where(perm => perm.UserId == user)
+            .Select(perm => perm.PermissionText)
+            .ToListAsync();
+
+        var groups = permissions
+            .Where(perm => perm.StartsWith("group."))
+            .ToList();
+
+        var groupPerms = await context.Permissions
+            .Where(perm => groups.Contains(user))
+            .Select(perm => perm.PermissionText)
+            .ToListAsync();
+        
+        permissions.AddRange(groupPerms);
+
+        return permissions.ToArray();
+    }
+}