Merge two Twitter lists using twitter-api

mergeTwLists.go

package main

import (
	"fmt"
	"net/url"

	"github.com/tarekbadrshalaan/anaconda"
)

func main() {
	ConsumerKey := ""
	ConsumerSecret := ""
	AccessToken := ""
	AccessTokenSecret := ""
	twAPI := anaconda.NewTwitterApiWithCredentials(AccessToken, AccessTokenSecret, ConsumerKey, ConsumerSecret)
	var list1 int64 = 1396726685433843712
	var list2 int64 = 1386252949513461761

	count := commonUsersCount(twAPI, list1, list2)
	fmt.Printf("Common Users count %v\n", count)

	err := mergeTwoLists(twAPI, list1, list2)
	if err != nil {
		fmt.Println(err)
	}

}

// getUsersListIds: return all Users-ids in list.
func getUsersListIds(twAPI *anaconda.TwitterApi, listId int64) map[int64]bool {
	v := url.Values{}
	usersIds := make(map[int64]bool)
	cursor, err := twAPI.GetListMembers("", listId, v)
	if err != nil {
		fmt.Printf("error 35: %v\n", err)
		return nil
	}
	nextCursor := "-1"
	for {
		fmt.Printf("Current Cursor %v\n", nextCursor)

		v.Set("cursor", nextCursor)
		cursor, err = twAPI.GetListMembers("", listId, v)
		if err != nil {
			fmt.Printf("error 45: %v\n", err)
			return nil
		}
		for _, user := range cursor.Users {
			usersIds[user.Id] = true
		}
		nextCursor = cursor.Next_cursor_str
		if nextCursor == "0" {
			break
		}
	}
	return usersIds
}

// mergeTwoLists: Add users in list1 to list 2,
// Note duplicate  users will be ignored by twitter.
func mergeTwoLists(twAPI *anaconda.TwitterApi, listId1 int64, listId2 int64) error {
	v := url.Values{}
	cursor, err := twAPI.GetListMembers("", listId1, v)
	if err != nil {
		fmt.Printf("error 65: %v\n", err)
		return err
	}

	nextCursor := "-1"
	for {
		fmt.Printf("Current Cursor %v\n", nextCursor)
		screenNames := []string{}
		v.Set("cursor", nextCursor)
		cursor, err = twAPI.GetListMembers("", listId1, v)
		if err != nil {
			fmt.Printf("error 76: %v\n", err)
			return err
		}
		for _, user := range cursor.Users {
			screenNames = append(screenNames, user.ScreenName)
		}
		_, err := twAPI.AddMultipleUsersToList(screenNames, listId2, nil)
		if err != nil {
			fmt.Printf("error 84: %v\n", err)
			return err
		}
		fmt.Printf("Cursor <%v> done successfully\n", nextCursor)

		nextCursor = cursor.Next_cursor_str
		if nextCursor == "0" {
			break
		}
	}
	return nil
}

// commonUsersCount: get the count of common users in two list.
func commonUsersCount(twAPI *anaconda.TwitterApi, listId1 int64, listId2 int64) int {
	list1Ids := getUsersListIds(twAPI, listId1)
	print(list1Ids)
	list2Ids := getUsersListIds(twAPI, listId2)
	print(list2Ids)
	counter := 0
	for k := range list1Ids {
		if list2Ids[k] {
			counter++
		}
	}
	return counter
}