Foray-Data-Collection/webhook.php

<?php
$bot_name = "smeagol_lotr_bot";
$bot_api = require('api_key.php');

// Send html back to the sender.
function send_html($post_message, $reply=false) {
  global $decoded;
  global $bot_api;
  global $chat_id;
  $url = 'https://api.telegram.org/bot' . $bot_api . '/sendMessage';
  $post_msg = array('chat_id' => $chat_id, 'text' =>$post_message, 'parse_mode' => 'html');
  if ($reply != false) {
    if ($reply === true){
      $post_msg['reply_to_message_id'] = $decoded->{'message'}->{'message_id'};
    }
    else {
      $post_msg['reply_to_message_id'] = $reply;
    }
  }
  $options = array(
    'http' => array(
      'header' => "Content-type: application/x-www-form-urlencoded\r\n",
      'method' => 'POST',
      'content' => http_build_query($post_msg)
    )
  );
  $context = stream_context_create($options);
  $result = file_get_contents($url, false, $context);
}

function add_to_db($success) {
  global $decoded;
  $user_id = $decoded->{"message"}->{"from"}->{"id"};
  $timestamp = $decoded->{"message"}->{"forward_date"};
  $mysql = require('mysql_credentials.php');
  $conn = new mysqli($mysql['servername'], $mysql['username'], $mysql['password'], $mysql['database']);
  if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
  }
  $stmt = $conn->prepare("INSERT INTO data (id, timestamp, success) VALUES (?,?,?);");
  $stmt->bind_param('iii', $user_id, $timestamp, $success);
  $stmt->execute();
  $conn->close();
}

// Get JSON from post, store it and decode it.
$var = file_get_contents('php://input');
$decoded = json_decode($var);

// Store the chat ID
$chat_id = $decoded->{"message"}->{"chat"}->{"id"};
if ($decoded->{"message"}->{"forward_from"}->{"username"} != "chtwrsbot") {
  exit();
}

if (!isset($decoded->{"message"}->{"text"})){
  exit();
}

$text = $decoded->{"message"}->{"text"};

if (substr_count($text, " was completely clueless. Village was successfully pillaged. You feel pleased about yourself.") == 1){
  add_to_db(1);
}
elseif (substr_count($text, "noticed you and nearly beat you to death.") == 1){
  add_to_db(0);
}
elseif (substr_count($text, "tried stopping you, but you were stronger.") == 1){
  add_to_db(0);
}
?>