Initial commit

utils/blockVisibility.js

@@ -0,0 +1,49 @@
+function listIncludesUserId(list, userId) {
+  if (!userId || !list?.length) return false
+  return list.some((id) => String(id) === String(userId))
+}
+
+/** Viewer has blocked the profile owner */
+function viewerBlockedUser(user, viewerId) {
+  if (!user || !viewerId) return false
+  return listIncludesUserId(user.blocked_by, viewerId)
+}
+
+/** Profile owner has blocked the viewer */
+function userBlockedViewer(user, viewerId) {
+  if (!user || !viewerId) return false
+  return listIncludesUserId(user.blocked_users, viewerId)
+}
+
+/** Viewer (blocked person) cannot see profile/posts of user who blocked them */
+function viewerIsBlockedBy(user, viewerId) {
+  return userBlockedViewer(user, viewerId)
+}
+
+function blockedProfilePayload(user) {
+  return {
+    _id: user._id,
+    user_name: user.user_name,
+    blocked_you: true,
+    is_self: false,
+    user_type: user.user_type,
+    postsCount: 0,
+    allProjectsCount: 0,
+    successfulProjectsCount: 0,
+  }
+}
+
+/** User IDs who have blocked the viewer */
+async function getBlockerUserIds(UserModel, viewerId) {
+  if (!viewerId) return []
+  return UserModel.find({ blocked_users: viewerId }).distinct('_id')
+}
+
+module.exports = {
+  listIncludesUserId,
+  viewerBlockedUser,
+  userBlockedViewer,
+  viewerIsBlockedBy,
+  blockedProfilePayload,
+  getBlockerUserIds,
+}