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krun
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‎CanvasStats.php

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<?php
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class CanvasStats {
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private $user;
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private $all_stickers = array();
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private $stickercount = 0;
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private $numposts = 0;
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private $pointscount = 0;
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private $api_calls = 0;
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private $error = FALSE;
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private static $weight = array("fuckyeah" => 150,
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"number-oneocle" => 100,
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"glove" => 50,
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"super-lol" => 30,
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"tacnayn" => 25,
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"nyancat" => 25,
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"hipster" => 20,
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"kawaii" => 15,
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"forever-alone" => 10,
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"banana" => 5,
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"cool" => 5 );
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const perpage = 100; #number of posts returned for each call to canvas API
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const user_api = 'https://canv.as/public_api/users/';
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const post_api = 'https://canv.as/public_api/posts/';
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const api_limit_message = "Slow down there, cowboy!";
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const error_undefined = "There was an unexpected failure";
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const error_api_limit = "We have reached API request limit :(";
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/**
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* Class constructor
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*
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* This will construct an object of class CanvasStats and load user stats
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*/
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public function __construct($name) {
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$this->user = $name;
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$skip = 0;
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while(true){
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$data_string = '{"ids": [{"skip": '.$skip.', "user": "'.$this->user.'"}]}';
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$ch = curl_init(self::user_api);
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curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
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curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_HTTPHEADER, array(
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'Content-Type: application/json',
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'Content-Length: ' . strlen($data_string))
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);
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$result = curl_exec($ch);
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$this->api_calls++;
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curl_close($ch);
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$res = json_decode($result,true);
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if ($res["success"] == false){
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$this->error = self::error_undefined;
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if ($res["reason"] == self::api_limit_message) {
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$this->error = self::error_api_limit;
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}
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}
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$posts = $res["users"][0]["posts"];
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$posts_page = array();
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if (count($posts) > 0) {
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$skip += self::perpage;
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$this->numposts += count($posts);
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} else {
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break;
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}
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foreach ($posts as $post) {
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$posts_page[] = $post["id"];
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}
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$postids = json_encode($posts_page);
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$data_string = '{"ids": '.$postids.'}';
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$ch = curl_init(self::post_api);
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curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
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curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_HTTPHEADER, array(
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'Content-Type: application/json',
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'Content-Length: ' . strlen($data_string))
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);
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$result = curl_exec($ch);
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$this->api_calls++;
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curl_close($ch);
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$res = json_decode($result,true);
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foreach($res["posts"] as $post){
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$stickers = $post["stickers"];
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foreach ($stickers as $sticker){
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$this->all_stickers[$sticker["name"]] += $sticker["count"];
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}
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}
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}
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foreach($this->all_stickers as $sticker) {
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$this->stickercount += $sticker;
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}
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foreach($this->all_stickers as $name => $value) {
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$this->pointscount += $value*self::weight($name);
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}
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}
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/**
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* getAllStickers()
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*
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* This method returns a list with detailed sticker count.
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*
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* Return value is an array of the form [(str)sticker_type] => (int)amount
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*/
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public function getAllStickers() {
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return $this->all_stickers;
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}
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/**
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* getNumStickers()
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*
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* Returns total number of stickers for the user
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*/
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public function getNumStickers() {
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return $this->stickercount;
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}
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/**
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* getNumPosts()
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*
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* Returns total number of posts for the user
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*/
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public function getNumPosts() {
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return $this->numposts;
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}
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/**
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* getPoints()
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*
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* Returns total number of points
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*/
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public function getPoints() {
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return $this->pointscount;
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}
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/**
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* getAvgPoints()
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*
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* Returns average points per post
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*/
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public function getAvgPoints() {
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return round($this->getPoints()/$this->getNumPosts(),2);
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}
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/**
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* getApiCalls()
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*
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* Returns number of calls made to Canv.as API
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*/
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public function getApiCalls() {
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return $this->api_calls;
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}
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/**
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* error()
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*
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* FALSE if user stats were loaded correctly
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* Error message otherwise
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*/
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public function error() {
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return $this->error;
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}
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/**
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* weight($type)
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*
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* Returns number of points for the given sticker type.
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*
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* Example: weight("fuck-yeah") = 150.
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*/
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public static function weight($type) {
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if (isset(self::$weight[$type])){
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return self::$weight[$type];
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} else {
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return 1;
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}
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}
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}
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?>

‎example.php

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<html>
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<head>
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<title>Canv.as stats example</title>
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</head>
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<body>
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<?php
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if (!isset($_GET["user"])) { ?>
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<form method="GET">
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<input type="text" name="user" placeholder="Canvas username">
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<input type="submit">
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</form>
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<?php
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} else {
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$user = htmlspecialchars($_GET["user"]);
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include("CanvasStats.php");
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$canvas_stats = new CanvasStats($user);
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if ($canvas_stats->error()){
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die($canvas_stats->error());
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}
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echo "<h1>Sticker list:</h1>\r\n";
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echo "<ul>";
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foreach($canvas_stats->getAllStickers() as $type => $amount) {
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echo "<li><b>$type:</b> $amount</li>\r\n";
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}
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echo "</ul>\r\n\r\n";
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echo "<h1>Additional stats:</h1>\r\n";
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echo "<p><b>Number of stickers:</b> ".$canvas_stats->getNumStickers()."</p>\r\n";
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echo "<p><b>Number of posts:</b> ".$canvas_stats->getNumPosts()."</p>\r\n";
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echo "<p><b>Total points:</b> ".$canvas_stats->getPoints()."</p>\r\n";
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echo "<p><b>Average points per post:</b> ".$canvas_stats->getAvgPoints()."</p>\r\n";
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echo "<p><i>A total of ".$canvas_stats->getApiCalls()." calls to Canv.as api were needed to get these stats.</i></p>\r\n";
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}?>
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</body>
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</html>

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