<?php
/*
 * Name: Generic Blocks
 * Author: Shish <webmaster@shishnet.org>
 * Link: http://code.shishnet.org/shimmie2/
 * License: GPLv2
 * Description: Add HTML to some space (News, Ads, etc)
 */

class Blocks extends Extension
{
    public function onInitExt(InitExtEvent $event)
    {
        global $config, $database;
        if ($config->get_int("ext_blocks_version") < 1) {
            $database->create_table("blocks", "
				id SCORE_AIPK,
				pages VARCHAR(128) NOT NULL,
				title VARCHAR(128) NOT NULL,
				area VARCHAR(16) NOT NULL,
				priority INTEGER NOT NULL,
				content TEXT NOT NULL
			");
            $database->execute("CREATE INDEX blocks_pages_idx ON blocks(pages)", []);
            $config->set_int("ext_blocks_version", 1);
        }
    }

    public function onUserBlockBuilding(UserBlockBuildingEvent $event)
    {
        global $user;
        if ($user->can("manage_blocks")) {
            $event->add_link("Blocks Editor", make_link("blocks/list"));
        }
    }

    public function onPageRequest(PageRequestEvent $event)
    {
        global $database, $page, $user;

        $blocks = $database->cache->get("blocks");
        if ($blocks === false) {
            $blocks = $database->get_all("SELECT * FROM blocks");
            $database->cache->set("blocks", $blocks, 600);
        }
        foreach ($blocks as $block) {
            $path = implode("/", $event->args);
            if (strlen($path) < 4000 && fnmatch($block['pages'], $path)) {
                $b = new Block($block['title'], $block['content'], $block['area'], $block['priority']);
                $b->is_content = false;
                $page->add_block($b);
            }
        }

        if ($event->page_matches("blocks") && $user->can("manage_blocks")) {
            if ($event->get_arg(0) == "add") {
                if ($user->check_auth_token()) {
                    $database->execute("
						INSERT INTO blocks (pages, title, area, priority, content)
						VALUES (?, ?, ?, ?, ?)
					", [$_POST['pages'], $_POST['title'], $_POST['area'], (int)$_POST['priority'], $_POST['content']]);
                    log_info("blocks", "Added Block #".($database->get_last_insert_id('blocks_id_seq'))." (".$_POST['title'].")");
                    $database->cache->delete("blocks");
                    $page->set_mode("redirect");
                    $page->set_redirect(make_link("blocks/list"));
                }
            }
            if ($event->get_arg(0) == "update") {
                if ($user->check_auth_token()) {
                    if (!empty($_POST['delete'])) {
                        $database->execute("
							DELETE FROM blocks
							WHERE id=?
						", [$_POST['id']]);
                        log_info("blocks", "Deleted Block #".$_POST['id']);
                    } else {
                        $database->execute("
							UPDATE blocks SET pages=?, title=?, area=?, priority=?, content=?
							WHERE id=?
						", [$_POST['pages'], $_POST['title'], $_POST['area'], (int)$_POST['priority'], $_POST['content'], $_POST['id']]);
                        log_info("blocks", "Updated Block #".$_POST['id']." (".$_POST['title'].")");
                    }
                    $database->cache->delete("blocks");
                    $page->set_mode("redirect");
                    $page->set_redirect(make_link("blocks/list"));
                }
            } elseif ($event->get_arg(0) == "list") {
                $this->theme->display_blocks($database->get_all("SELECT * FROM blocks ORDER BY area, priority"));
            }
        }
    }
}