PLT-4457 Added API to get multiple users by their usernames (#6218)

* Allow getting profiles by username without a team

* Changed UserStore.GetProfilesByUsernames to return an array

* PLT-4457 Added API to get multiple users by their usernames

* Changed users/names route to users/usernames

store/sql_user_store.go

@@ -729,20 +729,19 @@ func (us SqlUserStore) GetProfilesByUsernames(usernames []string, teamId string)
 			idQuery += ":username" + strconv.Itoa(index)
 		}
 
-		props["TeamId"] = teamId
+		var query string
+		if teamId == "" {
+			query = `SELECT * FROM Users WHERE Username IN (` + idQuery + `)`
+		} else {
+			query = `SELECT Users.* FROM Users INNER JOIN TeamMembers ON
+				Users.Id = TeamMembers.UserId AND Users.Username IN (` + idQuery + `) AND TeamMembers.TeamId = :TeamId `
+			props["TeamId"] = teamId
+		}
 
-		if _, err := us.GetReplica().Select(&users, `SELECT Users.* FROM Users INNER JOIN TeamMembers ON
-			Users.Id = TeamMembers.UserId AND Users.Username IN (`+idQuery+`) AND TeamMembers.TeamId = :TeamId `, props); err != nil {
+		if _, err := us.GetReplica().Select(&users, query, props); err != nil {
 			result.Err = model.NewLocAppError("SqlUserStore.GetProfilesByUsernames", "store.sql_user.get_profiles.app_error", nil, err.Error())
 		} else {
-			userMap := make(map[string]*model.User)
-
-			for _, u := range users {
-				u.Sanitize(map[string]bool{})
-				userMap[u.Id] = u
-			}
-
-			result.Data = userMap
+			result.Data = users
 		}
 
 		storeChannel <- result

store/sql_user_store_test.go

@@ -836,25 +836,67 @@ func TestUserStoreGetProfilesByUsernames(t *testing.T) {
 	if r1 := <-store.User().GetProfilesByUsernames([]string{u1.Username, u2.Username}, teamId); r1.Err != nil {
 		t.Fatal(r1.Err)
 	} else {
-		users := r1.Data.(map[string]*model.User)
+		users := r1.Data.([]*model.User)
 		if len(users) != 2 {
 			t.Fatal("invalid returned users")
 		}
 
-		if users[u1.Id].Id != u1.Id {
-			t.Fatal("invalid returned user")
+		if users[0].Id != u1.Id && users[1].Id != u1.Id {
+			t.Fatal("invalid returned user 1")
+		}
+
+		if users[0].Id != u2.Id && users[1].Id != u2.Id {
+			t.Fatal("invalid returned user 2")
 		}
 	}
 
 	if r1 := <-store.User().GetProfilesByUsernames([]string{u1.Username}, teamId); r1.Err != nil {
 		t.Fatal(r1.Err)
 	} else {
-		users := r1.Data.(map[string]*model.User)
+		users := r1.Data.([]*model.User)
 		if len(users) != 1 {
 			t.Fatal("invalid returned users")
 		}
 
-		if users[u1.Id].Id != u1.Id {
+		if users[0].Id != u1.Id {
+			t.Fatal("invalid returned user")
+		}
+	}
+
+	team2Id := model.NewId()
+
+	u3 := &model.User{}
+	u3.Email = model.NewId()
+	u3.Username = "username3" + model.NewId()
+	Must(store.User().Save(u3))
+	Must(store.Team().SaveMember(&model.TeamMember{TeamId: team2Id, UserId: u3.Id}))
+
+	if r1 := <-store.User().GetProfilesByUsernames([]string{u1.Username, u3.Username}, ""); r1.Err != nil {
+		t.Fatal(r1.Err)
+	} else {
+		users := r1.Data.([]*model.User)
+		if len(users) != 2 {
+			t.Fatal("invalid returned users")
+		}
+
+		if users[0].Id != u1.Id && users[1].Id != u1.Id {
+			t.Fatal("invalid returned user 1")
+		}
+
+		if users[0].Id != u3.Id && users[1].Id != u3.Id {
+			t.Fatal("invalid returned user 3")
+		}
+	}
+
+	if r1 := <-store.User().GetProfilesByUsernames([]string{u1.Username, u3.Username}, teamId); r1.Err != nil {
+		t.Fatal(r1.Err)
+	} else {
+		users := r1.Data.([]*model.User)
+		if len(users) != 1 {
+			t.Fatal("invalid returned users")
+		}
+
+		if users[0].Id != u1.Id {
 			t.Fatal("invalid returned user")
 		}
 	}