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shimmie2/contrib/numeric_score/main.php
shish 8f39ae6d3f more standard sqlness
git-svn-id: file:///home/shish/svn/shimmie2/trunk@926 7f39781d-f577-437e-ae19-be835c7a54ca
2008-07-24 15:07:39 +00:00

119 lines
3.5 KiB
PHP

<?php
/**
* Name: Image Scores (Numeric)
* Author: Shish <webmaster@shishnet.org>
* License: GPLv2
* Description: Allow users to score images
*/
class NumericScoreSetEvent extends Event {
var $image_id, $user, $score;
public function NumericScoreSetEvent($image_id, $user, $score) {
$this->image_id = $image_id;
$this->user = $user;
$this->score = $score;
}
}
class NumericScore extends Extension {
var $theme;
public function receive_event($event) {
if(is_null($this->theme)) $this->theme = get_theme_object("numeric_score", "NumericScoreTheme");
if(is_a($event, 'InitExtEvent')) {
global $config;
if($config->get_int("ext_numeric_score_version", 0) < 1) {
$this->install();
}
}
if(is_a($event, 'DisplayingImageEvent')) {
global $user;
if(!$user->is_anonymous()) {
$html = $this->theme->get_voter_html($event->image);
$event->page->add_block(new Block("Image Score", $html, "left", 20));
}
}
if(is_a($event, 'PageRequestEvent') && ($event->page_name == "numeric_score_vote")) {
if(!$event->user->is_anonymous()) {
$image_id = int_escape($_POST['image_id']);
$char = $_POST['vote'];
$score = 0;
if($char == "up") $score = 1;
else if($char == "down") $score = -1;
if($score != 0) send_event(new NumericScoreSetEvent($image_id, $event->user, $score));
$event->page->set_mode("redirect");
$event->page->set_redirect(make_link("post/view/$image_id"));
}
}
if(is_a($event, 'ImageInfoSetEvent')) {
global $user;
$char = $_POST['numeric_score'];
$score = 0;
if($char == "u") $score = 1;
else if($char == "d") $score = -1;
if($score != 0) send_event(new NumericScoreSetEvent($event->image_id, $user, $score));
}
if(is_a($event, 'NumericScoreSetEvent')) {
$this->add_vote($event->image_id, $event->user->id, $event->score);
}
if(is_a($event, 'ImageDeletionEvent')) {
global $database;
$database->execute("DELETE FROM numeric_score_votes WHERE image_id=?", array($event->image->id));
}
if(is_a($event, 'ParseLinkTemplateEvent')) {
$event->replace('$score', $event->image->numeric_score);
}
if(is_a($event, 'SearchTermParseEvent')) {
$matches = array();
if(preg_match("/score(<|<=|=|=>|>)(\d+)/", $event->term, $matches)) {
$cmp = $matches[1];
$score = $matches[2];
$event->set_querylet(new Querylet("numeric_score $cmp $score"));
}
}
}
private function install() {
global $database;
global $config;
if($config->get_int("ext_numeric_score_version") < 1) {
$database->Execute("ALTER TABLE images ADD COLUMN numeric_score INTEGER NOT NULL DEFAULT 0");
$database->Execute("CREATE INDEX images__numeric_score ON images(numeric_score)");
$database->Execute("
CREATE TABLE numeric_score_votes (
image_id INTEGER NOT NULL,
user_id INTEGER NOT NULL,
score INTEGER NOT NULL,
UNIQUE(image_id, user_id),
INDEX(image_id)
)
");
$config->set_int("ext_numeric_score_version", 1);
}
}
private function add_vote($image_id, $user_id, $score) {
global $database;
$database->Execute(
"DELETE FROM numeric_score_votes WHERE image_id=? AND user_id=?",
array($image_id, $user_id));
$database->Execute(
"INSERT INTO numeric_score_votes(image_id, user_id, score) VALUES(?, ?, ?)",
array($image_id, $user_id, $score));
$database->Execute(
"UPDATE images SET numeric_score=(SELECT SUM(score) FROM numeric_score_votes WHERE image_id=?) WHERE id=?",
array($image_id, $image_id));
}
}
add_event_listener(new NumericScore());
?>