Implement Twitter contact endpoints

- Implement /followers/ids
- Implement /followers/list
- Reimplement /friends/ids
- Reimplement /friends/list
- Update API reference
- Remove obsolete tests

doc/API-Twitter.md

@@ -152,19 +152,27 @@ These endpoints use the [Friendica API entities](help/API-Entities).
 - [GET api/friendships/incoming](https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/get-friendships-incoming)
     - Unsupported parameters
         - `stringify_ids`
-- [GET api/followers/ids](https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/get-followers-ids)
-    - Unsupported parameters:
-        - `user_id`: Relationships aren't returned for other users than self
-        - `screen_name`: Relationships aren't returned for other users than self
+
+- - [GET api/followers/ids](https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/get-followers-ids)
+  - [GET api/followers/list](https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/get-followers-list)
   - [GET api/friends/ids](https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/get-friends-ids)
-    - Unsupported parameters:
-        - `user_id`: Relationships aren't returned for other users than self
-        - `screen_name`: Relationships aren't returned for other users than self
+  - [GET api/friends/list](https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/get-friends-list)
+    - Additional parameter:
+        - `since_id`: Same behavior as `cursor`, use the `next_cursor` value to load the next page.
+    - Unsupported parameter:
+        - `skip_status`: No status is returned even if it isn't set to true.
+    - Caveats:
+        - `user_id` must be the ID of a contact associated with a local user account.
+        - `screen_name` must be associated with a local user account.
+        - `screen_name` trumps `user_id` if both are provided (undocumented Twitter behavior).
+        - Will succeed but return an empty array for users hiding their contact lists.
 
 
 - [POST api/friendships/destroy](https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/post-friendships-destroy)
 
 
+
+
 ## Non-implemented endpoints
 
 - [GET oauth/authenticate](https://developer.twitter.com/en/docs/basics/authentication/api-reference/authenticate)
@@ -188,8 +196,6 @@ These endpoints use the [Friendica API entities](help/API-Entities).
 - [POST lists/subscribers/destroy](https://developer.twitter.com/en/docs/accounts-and-users/create-manage-lists/api-reference/post-lists-subscribers-destroy)
 
 
-- [GET followers/list](https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/get-followers-list)
-- [GET friends/list](https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/get-friends-list)
 - [GET friendships/lookup](https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/get-friendships-lookup)
 - [GET friendships/no_retweets/ids](https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/get-friendships-no_retweets-ids)
 - [GET friendships/outgoing](https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/get-friendships-outgoing)

include/api.php

@@ -3580,96 +3580,6 @@ function api_statusnet_version($type)
 api_register_func('api/gnusocial/version', 'api_statusnet_version', false);
 api_register_func('api/statusnet/version', 'api_statusnet_version', false);
 
-/**
- *
- * @param string $type Return type (atom, rss, xml, json)
- *
- * @param int $rel A contact relationship constant
- * @return array|string|void
- * @throws BadRequestException
- * @throws ForbiddenException
- * @throws ImagickException
- * @throws InternalServerErrorException
- * @throws UnauthorizedException
- * @todo use api_format_data() to return data
- */
-function api_ff_ids($type, int $rel)
-{
-	if (!api_user()) {
-		throw new ForbiddenException();
-	}
-
-	$a = DI::app();
-
-	api_get_user($a);
-
-	$stringify_ids = $_REQUEST['stringify_ids'] ?? false;
-
-	$contacts = DBA::p("SELECT `pcontact`.`id`
-		FROM `contact`
-		INNER JOIN `contact` AS `pcontact`
-		    ON `contact`.`nurl` = `pcontact`.`nurl`
-		    AND `pcontact`.`uid` = 0
-		WHERE `contact`.`uid` = ?
-		AND NOT `contact`.`self`
-		AND `contact`.`rel` IN (?, ?)",
-		api_user(),
-		$rel,
-		Contact::FRIEND
-	);
-
-	$ids = [];
-	foreach (DBA::toArray($contacts) as $contact) {
-		if ($stringify_ids) {
-			$ids[] = $contact['id'];
-		} else {
-			$ids[] = intval($contact['id']);
-		}
-	}
-
-	return api_format_data('ids', $type, ['id' => $ids]);
-}
-
-/**
- * Returns the ID of every user the user is following.
- *
- * @param string $type Return type (atom, rss, xml, json)
- *
- * @return array|string
- * @throws BadRequestException
- * @throws ForbiddenException
- * @throws ImagickException
- * @throws InternalServerErrorException
- * @throws UnauthorizedException
- * @see https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/get-friends-ids
- */
-function api_friends_ids($type)
-{
-	return api_ff_ids($type, Contact::SHARING);
-}
-
-/**
- * Returns the ID of every user following the user.
- *
- * @param string $type Return type (atom, rss, xml, json)
- *
- * @return array|string
- * @throws BadRequestException
- * @throws ForbiddenException
- * @throws ImagickException
- * @throws InternalServerErrorException
- * @throws UnauthorizedException
- * @see https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/get-followers-ids
- */
-function api_followers_ids($type)
-{
-	return api_ff_ids($type, Contact::FOLLOWER);
-}
-
-/// @TODO move to top of file or somewhere better
-api_register_func('api/friends/ids', 'api_friends_ids', true);
-api_register_func('api/followers/ids', 'api_followers_ids', true);
-
 /**
  * Sends a new direct message.
  *

src/Module/Api/Twitter/ContactEndpoint.php

@@ -0,0 +1,202 @@
+<?php
+/**
+ * @copyright Copyright (C) 2020, Friendica
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Module\Api\Twitter;
+
+use Friendica\Database\DBA;
+use Friendica\DI;
+use Friendica\Model\Profile;
+use Friendica\Model\User;
+use Friendica\Module\BaseApi;
+use Friendica\Model\Contact;
+use Friendica\Network\HTTPException;
+use Friendica\Util\Strings;
+
+abstract class ContactEndpoint extends BaseApi
+{
+	const DEFAULT_COUNT = 20;
+	const MAX_COUNT = 200;
+
+	public static function init(array $parameters = [])
+	{
+		parent::init($parameters);
+
+		if (!self::login()) {
+			throw new HTTPException\UnauthorizedException();
+		}
+	}
+
+	/**
+	 * Computes the uid from the contact_id + screen_name parameters
+	 *
+	 * @param int|null $contact_id
+	 * @param string   $screen_name
+	 * @return int
+	 * @throws HTTPException\NotFoundException
+	 */
+	protected static function getUid(int $contact_id = null, string $screen_name = null)
+	{
+		$uid = self::$current_user_id;
+
+		if ($contact_id || $screen_name) {
+			// screen_name trumps user_id when both are provided
+			if (!$screen_name) {
+				$contact = Contact::getById($contact_id, ['nick', 'url']);
+				// We don't have the followers of remote accounts so we check for locality
+				if (empty($contact) || !Strings::startsWith($contact['url'], DI::baseUrl()->get())) {
+					throw new HTTPException\NotFoundException(DI::l10n()->t('Contact not found'));
+				}
+
+				$screen_name = $contact['nick'];
+			}
+
+			$user = User::getByNickname($screen_name, ['uid']);
+			if (empty($user)) {
+				throw new HTTPException\NotFoundException(DI::l10n()->t('User not found'));
+			}
+
+			$uid = $user['uid'];
+		}
+
+		return $uid;
+	}
+
+	/**
+	 * This methods expands the contact ids into full user objects in an existing result set.
+	 *
+	 * @param mixed $rel A relationship constant or a list of them
+	 * @param int   $uid The local user id we query the contacts from
+	 * @param int   $cursor
+	 * @param int   $count
+	 * @param bool  $skip_status
+	 * @param bool  $include_user_entities
+	 * @return array
+	 * @throws HTTPException\InternalServerErrorException
+	 * @throws HTTPException\NotFoundException
+	 * @throws \ImagickException
+	 */
+	protected static function list($rel, int $uid, int $cursor = -1, int $count = self::DEFAULT_COUNT, bool $skip_status = false, bool $include_user_entities = true)
+	{
+		$return = self::ids($rel, $uid, $cursor, $count);
+
+		$users = [];
+		foreach ($return['ids'] as $contactId) {
+			$users[] = DI::twitterUser()->createFromContactId($contactId, $uid, $skip_status, $include_user_entities);
+		}
+
+		unset($return['ids']);
+		$return['users'] = $users;
+
+		$return = [
+			'users' => $users,
+			'next_cursor' => $return['next_cursor'],
+			'next_cursor_str' => $return['next_cursor_str'],
+			'previous_cursor' => $return['previous_cursor'],
+			'previous_cursor_str' => $return['previous_cursor_str'],
+			'total_count' => $return['total_count'],
+		];
+
+
+
+		return $return;
+	}
+
+	/**
+	 * @param mixed $rel A relationship constant or a list of them
+	 * @param int   $uid The local user id we query the contacts from
+	 * @param int   $cursor
+	 * @param int   $count
+	 * @param bool  $stringify_ids
+	 * @return array
+	 * @throws HTTPException\NotFoundException
+	 */
+	protected static function ids($rel, int $uid, int $cursor = -1, int $count = self::DEFAULT_COUNT, bool $stringify_ids = false)
+	{
+		$hide_friends = false;
+		if ($uid != self::$current_user_id) {
+			$profile = Profile::getByUID($uid);
+			if (empty($profile)) {
+				throw new HTTPException\NotFoundException(DI::l10n()->t('Profile not found'));
+			}
+
+			$hide_friends = (bool)$profile['hide-friends'];
+		}
+
+		$condition = DBA::collapseCondition([
+			'rel' => $rel,
+			'uid' => $uid,
+			'self' => false,
+			'deleted' => false,
+			'hidden' => false,
+			'archive' => false,
+			'pending' => false
+		]);
+
+		if ($cursor !== -1) {
+			$condition[0] .= " AND `id` > ?";
+			$condition[] = $cursor;
+		}
+
+		$ids = [];
+		$next_cursor = 0;
+		$previous_cursor = 0;
+		$total_count = 0;
+		if (!$hide_friends) {
+			$total_count = DBA::count('contact', $condition);
+
+			$contacts = Contact::selectToArray(['id'], $condition, ['limit' => $count, 'order' => ['id']]);
+
+			// Contains user-specific contact ids
+			$ids = array_column($contacts, 'id');
+
+			// Cursor is on the user-specific contact id since it's the sort field
+			if (count($ids)) {
+				$next_cursor = $ids[count($ids) -1];
+			}
+
+			// Conversion to public contact ids
+			array_walk($ids, function (&$contactId) use ($uid, $stringify_ids) {
+				$cdata = Contact::getPublicAndUserContacID($contactId, $uid);
+				if ($stringify_ids) {
+					$contactId = (string)$cdata['public'];
+				} else {
+					$contactId = (int)$cdata['public'];
+				}
+			});
+
+			// No next page
+			if ($total_count <= count($contacts)) {
+				$next_cursor = 0;
+			}
+		}
+
+		$return = [
+			'ids' => $ids,
+			'next_cursor' => $next_cursor,
+			'next_cursor_str' => (string)$next_cursor,
+			'previous_cursor' => $previous_cursor,
+			'previous_cursor_str' => (string)$previous_cursor,
+			'total_count' => $total_count,
+		];
+
+		return $return;
+	}
+}

src/Module/Api/Twitter/FollowersIds.php

@@ -0,0 +1,49 @@
+<?php
+/**
+ * @copyright Copyright (C) 2020, Friendica
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Module\Api\Twitter;
+
+use Friendica\Core\System;
+use Friendica\Model\Contact;
+
+/**
+ * @see https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/get-followers-ids
+ */
+class FollowersIds extends ContactEndpoint
+{
+	public static function rawContent(array $parameters = [])
+	{
+		// Expected value for user_id parameter: public/user contact id
+		$contact_id    = $_GET['user_id'] ?? null;
+		$screen_name   = $_GET['screen_name'] ?? null;
+		$cursor        = $_GET['cursor'] ?? $_GET['since_id'] ?? -1;
+		$stringify_ids = ($_GET['stringify_ids'] ?? 'false') != 'false';
+		$count         = min((int) ($_GET['count'] ?? self::DEFAULT_COUNT), self::MAX_COUNT);
+
+		System::jsonExit(self::ids(
+			[Contact::FOLLOWER, Contact::FRIEND],
+			self::getUid($contact_id, $screen_name),
+			$cursor,
+			$count,
+			$stringify_ids
+		));
+	}
+}

src/Module/Api/Twitter/FollowersList.php

@@ -0,0 +1,51 @@
+<?php
+/**
+ * @copyright Copyright (C) 2020, Friendica
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Module\Api\Twitter;
+
+use Friendica\Core\System;
+use Friendica\Model\Contact;
+
+/**
+ * @see https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/get-followers-list
+ */
+class FollowersList extends ContactEndpoint
+{
+	public static function rawContent(array $parameters = [])
+	{
+		// Expected value for user_id parameter: public/user contact id
+		$contact_id  = $_GET['user_id'] ?? null;
+		$screen_name = $_GET['screen_name'] ?? null;
+		$cursor      = $_GET['cursor'] ?? $_GET['since_id'] ?? -1;
+		$count       = min((int) ($_GET['count'] ?? self::DEFAULT_COUNT), self::MAX_COUNT);
+		$skip_status = in_array(($_GET['skip_status'] ?? false), [true, 'true', 't', 1, '1']);
+		$include_user_entities = ($_GET['include_user_entities'] ?? 'true') != 'false';
+
+		System::jsonExit(self::list(
+			[Contact::FOLLOWER, Contact::FRIEND],
+			self::getUid($contact_id, $screen_name),
+			$cursor,
+			$count,
+			$skip_status,
+			$include_user_entities
+		));
+	}
+}

src/Module/Api/Twitter/FriendsIds.php

@@ -0,0 +1,49 @@
+<?php
+/**
+ * @copyright Copyright (C) 2020, Friendica
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Module\Api\Twitter;
+
+use Friendica\Core\System;
+use Friendica\Model\Contact;
+
+/**
+ * @see https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/get-friends-ids
+ */
+class FriendsIds extends ContactEndpoint
+{
+	public static function rawContent(array $parameters = [])
+	{
+		// Expected value for user_id parameter: public/user contact id
+		$contact_id    = $_GET['user_id'] ?? null;
+		$screen_name   = $_GET['screen_name'] ?? null;
+		$cursor        = $_GET['cursor'] ?? $_GET['since_id'] ?? -1;
+		$stringify_ids = ($_GET['stringify_ids'] ?? 'false') != 'false';
+		$count         = min((int) ($_GET['count'] ?? self::DEFAULT_COUNT), self::MAX_COUNT);
+
+		System::jsonExit(self::ids(
+			[Contact::SHARING, Contact::FRIEND],
+			self::getUid($contact_id, $screen_name),
+			$cursor,
+			$count,
+			$stringify_ids
+		));
+	}
+}

src/Module/Api/Twitter/FriendsList.php

@@ -0,0 +1,51 @@
+<?php
+/**
+ * @copyright Copyright (C) 2020, Friendica
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Module\Api\Twitter;
+
+use Friendica\Core\System;
+use Friendica\Model\Contact;
+
+/**
+ * @see https://developer.twitter.com/en/docs/accounts-and-users/follow-search-get-users/api-reference/get-friends-list
+ */
+class FriendsList extends ContactEndpoint
+{
+	public static function rawContent(array $parameters = [])
+	{
+		// Expected value for user_id parameter: public/user contact id
+		$contact_id  = $_GET['user_id'] ?? null;
+		$screen_name = $_GET['screen_name'] ?? null;
+		$cursor      = $_GET['cursor'] ?? $_GET['since_id'] ?? -1;
+		$count       = min((int) ($_GET['count'] ?? self::DEFAULT_COUNT), self::MAX_COUNT);
+		$skip_status = in_array(($_GET['skip_status'] ?? false), [true, 'true', 't', 1, '1']);
+		$include_user_entities = ($_GET['include_user_entities'] ?? 'true') != 'false';
+
+		System::jsonExit(self::list(
+			[Contact::SHARING, Contact::FRIEND],
+			self::getUid($contact_id, $screen_name),
+			$cursor,
+			$count,
+			$skip_status,
+			$include_user_entities
+		));
+	}
+}

static/routes.config.php

@@ -57,6 +57,10 @@ return [
 			'/profile/show'                      => [Module\Api\Friendica\Profile\Show::class , [R::GET         ]],
 			'/events'                            => [Module\Api\Friendica\Events\Index::class , [R::GET         ]],
 		],
+		'/followers/ids'                         => [Module\Api\Twitter\FollowersIds::class   , [R::GET         ]],
+		'/followers/list'                        => [Module\Api\Twitter\FollowersList::class  , [R::GET         ]],
+		'/friends/ids'                           => [Module\Api\Twitter\FriendsIds::class     , [R::GET         ]],
+		'/friends/list'                          => [Module\Api\Twitter\FriendsList::class    , [R::GET         ]],
 	],
 
 	'/admin'               => [

tests/include/ApiTest.php

@@ -2851,61 +2851,6 @@ class ApiTest extends DatabaseTest
 		$this->assertEquals('0.9.7', $result['version']);
 	}
 
-	/**
-	 * Test the api_ff_ids() function.
-	 *
-	 * @return void
-	 */
-	public function testApiFfIds()
-	{
-		$result = api_ff_ids('json', Contact::FOLLOWER);
-		$this->assertEquals(['id' => []], $result);
-	}
-
-	/**
-	 * Test the api_ff_ids() function with a result.
-	 *
-	 * @return void
-	 */
-	public function testApiFfIdsWithResult()
-	{
-		$this->markTestIncomplete();
-	}
-
-	/**
-	 * Test the api_ff_ids() function without an authenticated user.
-	 *
-	 * @return void
-	 * @expectedException Friendica\Network\HTTPException\ForbiddenException
-	 */
-	public function testApiFfIdsWithoutAuthenticatedUser()
-	{
-		$_SESSION['authenticated'] = false;
-		api_ff_ids('json', Contact::FOLLOWER);
-	}
-
-	/**
-	 * Test the api_friends_ids() function.
-	 *
-	 * @return void
-	 */
-	public function testApiFriendsIds()
-	{
-		$result = api_friends_ids('json');
-		$this->assertEquals(['id' => []], $result);
-	}
-
-	/**
-	 * Test the api_followers_ids() function.
-	 *
-	 * @return void
-	 */
-	public function testApiFollowersIds()
-	{
-		$result = api_followers_ids('json');
-		$this->assertEquals(['id' => []], $result);
-	}
-
 	/**
 	 * Test the api_direct_messages_new() function.
 	 *