From 919b1f45ab86df8a59f0c78919e537e643f8f7d5 Mon Sep 17 00:00:00 2001
From: Hypolite Petovan <hypolite@mrpetovan.com>
Date: Wed, 11 Dec 2019 03:32:21 -0500
Subject: [PATCH] Add new Introduction model class

---
 src/Model/Introduction.php | 156 +++++++++++++++++++++++++++++++++++++
 1 file changed, 156 insertions(+)
 create mode 100644 src/Model/Introduction.php

diff --git a/src/Model/Introduction.php b/src/Model/Introduction.php
new file mode 100644
index 000000000..127765c0c
--- /dev/null
+++ b/src/Model/Introduction.php
@@ -0,0 +1,156 @@
+<?php
+
+namespace Friendica\Model;
+
+use Friendica\BaseModel;
+use Friendica\Core\Protocol;
+use Friendica\Network\HTTPException;
+use Friendica\Protocol\ActivityPub;
+use Friendica\Protocol\Diaspora;
+use Friendica\Util\DateTimeFormat;
+
+/**
+ * @property int    uid
+ * @property int    fid
+ * @property int    contact-id
+ * @property bool   knowyou
+ * @property bool   duplex
+ * @property string note
+ * @property string hash
+ * @property string datetime
+ * @property bool   blocked
+ * @property bool   ignored
+ *
+ * @package Friendica\Model
+ */
+final class Introduction extends BaseModel
+{
+	static $table_name = 'intro';
+
+	/**
+	 * Confirms a follow request and sends a notic to the remote contact.
+	 *
+	 * @param bool      $duplex Is it a follow back?
+	 * @param bool|null $hidden Should this contact be hidden? null = no change
+	 * @throws HTTPException\InternalServerErrorException
+	 * @throws \ImagickException
+	 * @throws HTTPException\NotFoundException
+	 */
+	public function confirm(bool $duplex = false, bool $hidden = null)
+	{
+		$this->logger->info('Confirming follower', ['cid' => $this->{'contact-id'}]);
+
+		$contact = Contact::selectFirst([], ['id' => $this->{'contact-id'}, 'uid' => $this->uid]);
+
+		if (!$contact) {
+			throw new HTTPException\NotFoundException('Contact record not found.');
+		}
+
+		$new_relation = $contact['rel'];
+		$writable = $contact['writable'];
+
+		if (!empty($contact['protocol'])) {
+			$protocol = $contact['protocol'];
+		} else {
+			$protocol = $contact['network'];
+		}
+
+		if ($protocol == Protocol::ACTIVITYPUB) {
+			ActivityPub\Transmitter::sendContactAccept($contact['url'], $contact['hub-verify'], $contact['uid']);
+		}
+
+		if (in_array($protocol, [Protocol::DIASPORA, Protocol::ACTIVITYPUB])) {
+			if ($duplex) {
+				$new_relation = Contact::FRIEND;
+			} else {
+				$new_relation = Contact::FOLLOWER;
+			}
+
+			if ($new_relation != Contact::FOLLOWER) {
+				$writable = 1;
+			}
+		}
+
+		$fields = [
+			'name-date' => DateTimeFormat::utcNow(),
+			'uri-date'  => DateTimeFormat::utcNow(),
+			'blocked'   => false,
+			'pending'   => false,
+			'protocol'  => $protocol,
+			'writable'  => $writable,
+			'hidden'    => $hidden ?? $contact['hidden'],
+			'rel'       => $new_relation,
+		];
+		$this->dba->update('contact', $fields, ['id' => $contact['id']]);
+
+		array_merge($contact, $fields);
+
+		if ($new_relation == Contact::FRIEND) {
+			if ($protocol == Protocol::DIASPORA) {
+				$ret = Diaspora::sendShare(User::getById($contact['uid']), $contact);
+				$this->logger->info('share returns', ['return' => $ret]);
+			} elseif ($protocol == Protocol::ACTIVITYPUB) {
+				ActivityPub\Transmitter::sendActivity('Follow', $contact['url'], $contact['uid']);
+			}
+		}
+
+		$this->delete();
+	}
+
+	/**
+	 * Silently ignores the introduction, hides it from notifications and prevents the remote contact from submitting
+	 * additional follow requests.
+	 *
+	 * Chainable
+	 *
+	 * @return Introduction
+	 * @throws \Exception
+	 */
+	public function ignore()
+	{
+		$this->dba->update('intro', ['ignore' => true], ['id' => $this->id]);
+
+		return $this;
+	}
+
+	/**
+	 * Discards the introduction and sends a rejection message to AP contacts.
+	 *
+	 * @throws HTTPException\InternalServerErrorException
+	 * @throws HTTPException\NotFoundException
+	 * @throws \ImagickException
+	 */
+	public function discard()
+	{
+		// If it is a friend suggestion, the contact is not a new friend but an existing friend
+		// that should not be deleted.
+		if (!$this->fid) {
+			// When the contact entry had been created just for that intro, we want to get rid of it now
+			$condition = ['id' => $this->{'contact-id'}, 'uid' => $this->uid,
+				'self' => false, 'pending' => true, 'rel' => [0, Contact::FOLLOWER]];
+			if ($this->dba->exists('contact', $condition)) {
+				Contact::remove($this->{'contact-id'});
+			} else {
+				$this->dba->update('contact', ['pending' => false], ['id' => $this->{'contact-id'}]);
+			}
+		}
+
+		$contact = Contact::selectFirst([], ['id' => $this->{'contact-id'}, 'uid' => $this->uid]);
+
+		if (!$contact) {
+			throw new HTTPException\NotFoundException('Contact record not found.');
+		}
+
+		if (!empty($contact['protocol'])) {
+			$protocol = $contact['protocol'];
+		} else {
+			$protocol = $contact['network'];
+		}
+
+		if ($protocol == Protocol::ACTIVITYPUB) {
+			ActivityPub\Transmitter::sendContactReject($contact['url'], $contact['hub-verify'], $contact['uid']);
+		}
+
+		$this->delete();
+	}
+}