Initial commit

Projekte/WebDesktop/WebDesktopBackend/Persistance/GroupRepository.cs

@@ -0,0 +1,59 @@
+using System.Collections.Generic;
+using System.Linq;
+using WebDesktopBackend.Contract.Persistance;
+using WebDesktopBackend.Entitys.Permissions;
+
+namespace WebDesktopBackend.Persistance {
+    public class GroupRepository : IGroupRepository {
+        private readonly ITokenRepository _tokens;
+        private readonly PermissionGroup[] _groups;
+
+        public GroupRepository(ITokenRepository tokens) {
+            _tokens = tokens;
+            _groups = Program.Groups;
+        }
+        
+        public PermissionGroup GetPermissionGroup(string name) {
+            return _groups.SingleOrDefault(group => group.Permission.Equals(name));
+        }
+
+        public PermissionGroup[] GetGroupsFromUser(string userId) {
+            Permission[] permissions = _tokens.GetUserPermissions(userId);
+            return ExtractGroups(permissions);
+        }
+
+        public PermissionGroup[] ExtractGroups(Permission[] permissions) {
+            List<PermissionGroup> permissionGroups = new List<PermissionGroup>();
+            foreach (var permission in permissions) {
+                if (permission.PermissionName.StartsWith("group.")) {
+                    foreach (var permissionGroup in _groups) {
+                        if (permission.PermissionName.Equals(permissionGroup.Permission)) {
+                            permissionGroups.Add(permissionGroup);
+                            
+                            if (permissionGroup.Inherits is not null) {
+                                foreach (var inherit in permissionGroup.Inherits) {
+                                    permissionGroups.Add(GetPermissionGroup(inherit));
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            return permissionGroups.ToArray();
+        }
+
+        public Permission[] GetUserPermissions(string id) {
+            List<Permission> permissions = _tokens.GetUserPermissions(id)
+                .Where(perm => perm.Type == Permission.Allow).ToList();
+
+            PermissionGroup[] groups = ExtractGroups(permissions.ToArray());
+            foreach (var group in groups) {
+                if (group.Permissions is null) continue;
+                permissions.AddRange(group.Permissions
+                    .Select(perm => new Permission {Id = -1, UserId = id, Type = Permission.Allow, PermissionName = perm}));
+            }
+
+            return permissions.ToArray();
+        }
+    }
+}