Improve user profile search (#1266)

* Filter account owner in UserDiscoveryService

* Add tests and refine logics

ElementX/Sources/Services/Users/UserDiscoveryService.swift

@@ -24,7 +24,7 @@ final class UserDiscoveryService: UserDiscoveryServiceProtocol {
     }
 
     func fetchSuggestions() async -> Result<[UserProfileProxy], UserDiscoveryErrorType> {
-        .success([.mockAlice, .mockBob, .mockCharlie])
+        .success(filterAccountOwner([.mockAlice, .mockBob, .mockCharlie]))
     }
 
     func searchProfiles(with searchQuery: String) async -> Result<[UserProfileProxy], UserDiscoveryErrorType> {
@@ -33,7 +33,7 @@ final class UserDiscoveryService: UserDiscoveryServiceProtocol {
         do {
             async let searchedUsers = clientProxy.searchUsers(searchTerm: searchQuery, limit: 10).get()
             let users = try await merge(queriedProfile: queriedProfile, searchResults: searchedUsers)
-            return .success(users)
+            return .success(filterAccountOwner(users))
         } catch {
             // we want to show the profile (if any) even if the search fails
             if let queriedProfile = await queriedProfile {
@@ -59,7 +59,7 @@ final class UserDiscoveryService: UserDiscoveryServiceProtocol {
     }
     
     private func profileIfPossible(with searchQuery: String) async -> UserProfileProxy? {
-        guard searchQuery.isMatrixIdentifier else {
+        guard searchQuery.isMatrixIdentifier, searchQuery != clientProxy.userID else {
             return nil
         }
         
@@ -68,6 +68,11 @@ final class UserDiscoveryService: UserDiscoveryServiceProtocol {
         // fallback to a "local profile" if the profile api fails
         return getProfileResult ?? .init(userID: searchQuery)
     }
+
+    private func filterAccountOwner(_ profiles: [UserProfileProxy]) -> [UserProfileProxy] {
+        let accountOwnerID = clientProxy.userID
+        return profiles.filter { $0.userID != accountOwnerID }
+    }
 }
 
 private extension String {

UnitTests/Sources/UserDiscoveryService/UserDiscoveryServiceTest.swift

@@ -24,7 +24,7 @@ class UserDiscoveryServiceTest: XCTestCase {
     var clientProxy: MockClientProxy!
     
     override func setUpWithError() throws {
-        clientProxy = .init(userID: "")
+        clientProxy = .init(userID: "@foo:matrix.org")
         service = UserDiscoveryService(clientProxy: clientProxy)
     }
     
@@ -35,6 +35,13 @@ class UserDiscoveryServiceTest: XCTestCase {
         assertSearchResults(results, toBe: 1)
     }
 
+    func testOwnerIsFiltered() async throws {
+        clientProxy.searchUsersResult = .success(.init(results: [UserProfileProxy(userID: "@foo:matrix.org")], limited: true))
+
+        let results = await (try? search(query: "AAA").get()) ?? []
+        assertSearchResults(results, toBe: 0)
+    }
+    
     func testGetProfileIsNotCalled() async {
         clientProxy.searchUsersResult = .success(.init(results: searchResults, limited: true))
         clientProxy.getProfileResult = .success(.init(userID: "@alice:matrix.org"))
@@ -44,6 +51,15 @@ class UserDiscoveryServiceTest: XCTestCase {
         XCTAssertFalse(clientProxy.getProfileCalled)
     }
 
+    func testGetProfileIsNotCalledForAccountOwnerID() async {
+        clientProxy.searchUsersResult = .success(.init(results: searchResults, limited: true))
+        clientProxy.getProfileResult = .success(.init(userID: "@alice:matrix.org"))
+
+        let results = await (try? search(query: "foo:matrix.org").get()) ?? []
+        assertSearchResults(results, toBe: 3)
+        XCTAssertFalse(clientProxy.getProfileCalled)
+    }
+    
     func testLocalResultShows() async {
         clientProxy.searchUsersResult = .success(.init(results: searchResults, limited: true))
         clientProxy.getProfileResult = .success(.init(userID: "@some:matrix.org"))