<?php

require_once ( getenv( 'MW_INSTALL_PATH' ) !== false
	? getenv( 'MW_INSTALL_PATH' ) . '/maintenance/Maintenance.php'
	: dirname( __FILE__ ) . '/../../../maintenance/Maintenance.php' );

class TestDiscussionParser extends Maintenance {
	public function __construct() {
		parent::__construct();
		$this->mDescription = "Takes enwiki revision IDs and attempts to identify interested users";

		$this->addArg( 'revisions', 'Revision IDs, separated by commas', true /*required*/ );
	}

	public function execute() {
		$apiURL = 'http://en.wikipedia.org/w/api.php';

		$revisions = explode( ',', $this->getArg( 0 ) );

		// Retrieve original revisions and their predecessors
		$requestData = array(
			'format' => 'php',
			'action' => 'query',
			'prop' => 'revisions',
			'revids' => implode( '|', $revisions ),
		);

		$originalData = Http::post(
			$apiURL,
			array(
				'postData' => $requestData,
			)
		);

		$data = unserialize( $originalData );

		$pages = $data['query']['pages'];

		foreach ( $pages as $page ) {
			if ( count( $page['revisions'] ) != 1 ) {
				continue;
			}

			$revid = $page['revisions'][0]['revid'];

			$newRequest = array(
				'format' => 'php',
				'action' => 'query',
				'prop' => 'revisions',
				'titles' => $page['title'],
				'rvstartid' => $revid,
				'rvlimit' => 2,
				'rvprop' => 'ids|content|user',
			);

			$newData = Http::post(
				$apiURL,
				array(
					'postData' => $newRequest,
				)
			);

			$newData = unserialize( $newData );

			$allData = $newData['query']['pages'];
			$pageData = array_shift( $allData );
			if ( count( $pageData['revisions'] ) == 2 ) {
				$revision1 = $pageData['revisions'][0];
				$revision2 = $pageData['revisions'][1];
				$oldText = trim( $revision2['*'] ) . "\n";
				$newText = trim( $revision1['*'] ) . "\n";
			} elseif ( count( $pageData['revisions'] ) == 1 ) {
				$revision1 = $pageData['revisions'][0];
				$newText = trim( $revision1['*'] ) . "\n";
				$oldText = '';
			}

			$user = $pageData['revisions'][0]['user'];

			print "http://en.wikipedia.org/w/index.php?diff=prev&oldid=$revid\n";
			EchoDiscussionParser::getInterestedUsers( $oldText, $newText, $user );
		}
	}
}

$maintClass = "TestDiscussionParser";
require_once( RUN_MAINTENANCE_IF_MAIN );