From 35cca5dfa0788bf2aceebdac587e11f007390762 Mon Sep 17 00:00:00 2001
From: Pavel Shevaev <pacha.shevaev@gmail.com>
Date: Mon, 23 Oct 2023 19:02:35 +0300
Subject: [PATCH] Initial commit

---
 .gitignore    |   1 +
 composer.json |  11 +++++
 slack.inc.php | 124 ++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 136 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 composer.json
 create mode 100644 slack.inc.php

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..6e92f57
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+tags
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..84ffc68
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,11 @@
+{
+    "name": "bit/slask",
+    "description": "Slack simple posting utils",
+    "homepage": "https://git.bit5.ru/bit/slack",
+    "require": {
+        "php": ">=7.4"
+    },
+    "autoload": {
+        "classmap": ["slack.inc.php"]
+    }
+}
diff --git a/slack.inc.php b/slack.inc.php
new file mode 100644
index 0000000..4f0f981
--- /dev/null
+++ b/slack.inc.php
@@ -0,0 +1,124 @@
+<?php
+define("SLACK_REPLY_MAX_LEN", 3072);
+
+function _slack_init($token, $chan_id, array $fields, $channel_field_name = 'channel')
+{
+  if(!isset($fields['token']))
+    $fields['token'] = $token;
+  if(!isset($fields[$channel_field_name]))
+    $fields[$channel_field_name] = $chan_id;
+  return $fields;
+}
+
+function _slack_curl_exec($ch, $debug)
+{
+  curl_setopt($ch, CURLOPT_VERBOSE, $debug);
+
+  $result = curl_exec($ch);
+  curl_close($ch);
+  
+  if($debug)
+  {
+    echo "SLACK RAW RESP BEGIN\n";
+    var_dump($result);
+    echo "SLACK RAW RESP END\n\n";
+  }
+
+  $resp = json_decode($result, true);
+
+  if($debug)
+  {
+    echo "SLACK PARSED JSON RESP BEGIN\n";
+    var_dump($resp);
+    echo "SLACK PARSED JSON RESP END\n";
+  }
+
+  return $resp;
+}
+
+function slack_send_file($token, $chan_id, $post_text, $file_path, $mime, $fields = array(), $debug = false)
+{
+  $file_name = basename($file_path);
+  $file = new \CurlFile($file_path, $mime, $file_name);
+
+  $header = array();
+  $header[] = 'Content-Type: multipart/form-data';
+
+  $fields = _slack_init($token, $chan_id, $fields, 'channels');
+  $fields['file'] =  $file;
+  $fields['filename'] =  $file_name;
+  $fields['title'] = $file_name;
+  $fields['initial_comment'] = $post_text;
+  $fields['filetype'] = pathinfo($file_path, PATHINFO_EXTENSION);
+
+  $ch = curl_init("https://slack.com/api/files.upload");
+  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+  curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
+  curl_setopt($ch, CURLOPT_POST, 1);
+  curl_setopt($ch, CURLOPT_POSTFIELDS, $fields);
+  curl_setopt($ch, CURLOPT_MAX_SEND_SPEED_LARGE, 10*1024*1024);
+  curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
+
+  return _slack_curl_exec($ch, $debug);
+}
+
+function slack_send_message($token, $chan_id, $message, $fields = array(), $debug = false)
+{
+  $ch = curl_init("https://slack.com/api/chat.postMessage");
+  $fields = _slack_init($token, $chan_id, $fields);
+  $fields["text"] = $message;
+
+  curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
+  curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($fields));
+  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+  curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
+
+  return _slack_curl_exec($ch, $debug);
+}
+
+function slack_send_reply($token, $chan_id, $thread_ts, $message, $fields = array(), $debug = false)
+{
+  $fields["thread_ts"] = $thread_ts;
+  return slack_send_message($message, $fields, $debug, $token, $chan_id);
+}
+
+function slack_send_thread_with_replies($token, $chan_id, $message, array $replies, $fields = array(), $debug = false)
+{
+  $slack_orig_resp = slack_send_message(
+    $token,
+    $chan_id,
+    $message,
+    $fields,
+    $debug,
+  );
+
+  if(!isset($slack_orig_resp['ts']))
+  {
+    echo "Failed to post to Slack: response contains no 'ts' value to post thread replies\n"; 
+    return null;
+  }
+
+  $ts = $slack_orig_resp['ts'];
+
+  foreach($replies as $reply)
+  {
+    slack_send_reply(
+      $ts,
+      $reply,
+      $fields,
+      $debug,
+      $token,
+      $chan_id
+    );
+  }
+
+  return $ts;
+}
+
+function slack_trim_reply($reply, $len = SLACK_REPLY_MAX_LEN)
+{
+  if(strlen($reply) < $len)
+    return $reply;
+  return substr($reply, 0, $len - 3) . "...";
+}
+