Feature/20171125 get following

src/InstagramScraper/Endpoints.php

@@ -18,7 +18,7 @@ class Endpoints
     const COMMENTS_BEFORE_COMMENT_ID_BY_CODE = 'https://www.instagram.com/graphql/query/?query_id=17852405266163336&shortcode={{shortcode}}&first={{count}}&after={{commentId}}';
     const LAST_LIKES_BY_CODE = 'ig_shortcode({{code}}){likes{nodes{id,user{id,profile_pic_url,username,follows{count},followed_by{count},biography,full_name,media{count},is_private,external_url,is_verified}},page_info}}';
     const LIKES_BY_SHORTCODE = 'https://www.instagram.com/graphql/query/?query_id=17864450716183058&variables={"shortcode":"{{shortcode}}","first":{{count}},"after":"{{likeId}}"}';
-    const FOLLOWING_URL = 'https://www.instagram.com/graphql/query/?query_id=17874545323001329&id={{accountId}}&first={{count}}';
+    const FOLLOWING_URL = 'https://www.instagram.com/graphql/query/?query_id=17874545323001329&id={{accountId}}&first={{count}}&after={{after}}';
     const FOLLOWERS_URL = 'https://www.instagram.com/graphql/query/?query_id=17851374694183129&id={{accountId}}&first={{count}}&after={{after}}';
     const FOLLOW_URL = 'https://www.instagram.com/web/friendships/{{accountId}}/follow/';
     const UNFOLLOW_URL = 'https://www.instagram.com/web/friendships/{{accountId}}/unfollow/';
@@ -133,4 +133,18 @@ public static function getFollowersJsonLink($accountId, $count, $after = '')
 
         return $url;
     }
+
+    public static function getFollowingJsonLink($accountId, $count, $after = '')
+    {
+        $url = str_replace('{{accountId}}', urlencode($accountId), static::FOLLOWING_URL);
+        $url = str_replace('{{count}}', urlencode($count), $url);
+
+        if ($after === '') {
+            $url = str_replace('&after={{after}}', '', $url);
+        } else {
+            $url = str_replace('{{after}}', urlencode($after), $url);
+        }
+
+        return $url;
+    }
 }

src/InstagramScraper/Instagram.php

@@ -834,6 +834,71 @@ public function getFollowers($accountId, $count = 20, $pageSize = 20, $delayed =
         return $accounts;
     }
 
+    /**
+     * @param string $accountId Account id of the profile to query
+     * @param int $count Total followed accounts to retrieve
+     * @param int $pageSize Internal page size for pagination
+     * @param bool $delayed Use random delay between requests to mimic browser behaviour
+     *
+     * @return array
+     * @throws InstagramException
+     */
+    public function getFollowing($accountId, $count = 20, $pageSize = 20, $delayed = true)
+    {
+        if ($delayed) {
+            set_time_limit(1800); // 30 mins
+        }
+
+        $index = 0;
+        $accounts = [];
+        $endCursor = '';
+
+        if ($count < $pageSize) {
+            throw new InstagramException('Count must be greater than or equal to page size.');
+        }
+
+        while (true) {
+            $response = Request::get(Endpoints::getFollowingJsonLink($accountId, $pageSize, $endCursor),
+                $this->generateHeaders($this->userSession));
+            if ($response->code !== 200) {
+                throw new InstagramException('Response code is ' . $response->code . '. Body: ' . static::getErrorBody($response->body) . ' Something went wrong. Please report issue.');
+            }
+
+            $jsonResponse = json_decode($response->raw_body, true, 512, JSON_BIGINT_AS_STRING);
+
+            if ($jsonResponse['data']['user']['edge_follow']['count'] === 0) {
+                return $accounts;
+            }
+
+            $edgesArray = $jsonResponse['data']['user']['edge_follow']['edges'];
+            if (count($edgesArray) === 0) {
+                throw new InstagramException('Failed to get followers of account id ' . $accountId . '. The account is private.');
+            }
+
+            foreach ($edgesArray as $edge) {
+                $accounts[] = $edge['node'];
+                $index++;
+                if ($index >= $count) {
+                    break 2;
+                }
+            }
+
+            $pageInfo = $jsonResponse['data']['user']['edge_follow']['page_info'];
+            if ($pageInfo['has_next_page']) {
+                $endCursor = $pageInfo['end_cursor'];
+            } else {
+                break;
+            }
+
+            if ($delayed) {
+                // Random wait between 1 and 3 sec to mimic browser
+                $microsec = rand(1000000, 3000000);
+                usleep($microsec);
+            }
+        }
+        return $accounts;
+    }
+
     /**
      * @param bool $force
      *