From 0d800b1a694c13d9884b776bef0fb5a6c8365745 Mon Sep 17 00:00:00 2001
From: Simon Vieille <simon@deblan.fr>
Date: Thu, 25 Jul 2019 09:30:24 +0200
Subject: [PATCH] init

---
 .gitignore      |  2 ++
 config.ini.dist |  9 ++++++++
 index.php       | 58 +++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 69 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 config.ini.dist
 create mode 100644 index.php

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..564db9a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/cache.db
+/config.ini
diff --git a/config.ini.dist b/config.ini.dist
new file mode 100644
index 0000000..3ebbe4c
--- /dev/null
+++ b/config.ini.dist
@@ -0,0 +1,9 @@
+[feed]
+url =
+
+[cache]
+file = 'cache.db'
+
+[mattermost]
+hook_url =
+message_template =
diff --git a/index.php b/index.php
new file mode 100644
index 0000000..54e414c
--- /dev/null
+++ b/index.php
@@ -0,0 +1,58 @@
+<?php
+
+chdir(__DIR__);
+
+$config = parse_ini_file('config.ini', true);
+
+$feedUrl = $config['feed']['url'];
+$hookUrl = $config['mattermost']['hook_url'];
+$cacheFile = $config['cache']['file'];
+$template = $config['mattermost']['message_template'];
+
+if (file_exists($cacheFile)) {
+    $cache = json_decode(file_get_contents($cacheFile), true);
+
+    if ($cache === null) {
+        $cache = [];
+    }
+}
+
+$feedContent = file_get_contents($feedUrl);
+
+preg_match_all('#<title><!\[CDATA\[(.*)\]\]></title>#isU', $feedContent, $titles, PREG_SET_ORDER);
+preg_match_all('#<link>(.*)</link>#isU', $feedContent, $links, PREG_SET_ORDER);
+
+$commands = [];
+
+foreach ($titles as $key => $title) {
+    $link = $links[$key] ?? null;
+
+    if (!$link) {
+        continue;
+    }
+
+    $title = $title[1];
+    $link = $link[1];
+
+    $hash = md5($title.$link);
+
+    if (!isset($cache[$hash])) {
+        $cache[$hash] = true;
+
+        $json = json_encode([
+            'text' => sprintf($template, $title, $link),
+        ]);
+
+        $commands[] = sprintf(
+            'curl -i -X POST -H "Content-Type: application/json" -d %s %s',
+            escapeshellarg($json),
+            escapeshellarg($hookUrl)
+        );
+    }
+}
+
+file_put_contents($cacheFile, json_encode($cache));
+
+foreach ($commands as $command) {
+    shell_exec($command);
+}