#!/usr/bin/php -Cq
<?php

$hFile = @fopen("wikidatawiki-20130623-pages-articles.xml", "r");

$hFileEntity = fopen("entity.csv", "w");
$hFileEntityLabel = fopen("entity_label.csv", "w");
$hFileEntityDescription = fopen("entity_description.csv", "w");
$hFileEntityAlias = fopen("entity_alias.csv", "w");
$hFileEntityLink = fopen("entity_link.csv", "w");
$hFileEntityProperty = fopen("entity_property.csv", "w");

$iCount = 0;

$sTitle = '';
$iNS = false;
$iID = false;

if ($hFile) {
	while (($sLine = fgets($hFile, 4000000)) !== false) {
		if (substr($sLine, 0, 11) == '    <title>') {
			$sTitle = substr($sLine, 11, -9);
		}
		else if (substr($sLine, 0, 8) == '    <ns>') {
			$iNS = (int)substr($sLine, 8, -6);
		}
		else if (substr($sLine, 0, 8) == '    <id>') {
			$iID = (int)substr($sLine, 8, -6);
		}
		else if (substr($sLine, 0, 33) == '      <text xml:space="preserve">') {
			if ($iNS == -2) continue;
			if ($iNS == -1) continue;
			if ($iNS == 1) continue;
			if ($iNS == 2) continue;
			if ($iNS == 3) continue;
			if ($iNS == 4) continue;
			if ($iNS == 5) continue;
			if ($iNS == 6) continue;
			if ($iNS == 7) continue;
			if ($iNS == 8) continue;
			if ($iNS == 9) continue;
			if ($iNS == 10) continue;
			if ($iNS == 11) continue;
			if ($iNS == 12) continue;
			if ($iNS == 13) continue;
			if ($iNS == 14) continue;
			if ($iNS == 15) continue;
			if ($iNS == 121) continue;
			if ($iNS == 123) continue;
			if ($iNS == 829) continue;
			if ($iNS == 1198) continue;
			if ($iNS == 1199) continue;
			$sText = html_entity_decode(substr($sLine, 33, -8), ENT_COMPAT, 'UTF-8');
			$aArticle = json_decode($sText, true);

			if (array_diff(array_keys($aArticle), array("label", "description", "aliases", "links", "entity", "claims", "datatype")) != array()) {
				// DEBUG
				var_dump($sTitle);
				var_dump(array_keys($aArticle));
				var_dump($aArticle);
				exit;
			}

			$iPID = $iQID = null;
			if ($aArticle['entity'][0] == 'p') {
				$iPID = (int)substr($aArticle['entity'], 1);
			} else if ($aArticle['entity'][0] == 'q') {
				$iQID = (int)substr($aArticle['entity'], 1);
			} else {
				continue;
			}

			echo ".";

			fputcsv($hFileEntity, array($iID,$sTitle,$iPID,$iQID,@$aArticle['datatype']));

			foreach($aArticle['label'] as $sLang => $sLabel) {
				fputcsv($hFileEntityLabel, array($iID,$sLang,$sLabel));
				// echo "insert into entity_label values (".$iID.",'".pg_escape_string($sLang)."','".pg_escape_string($sLabel)."');\n";
			}

			foreach($aArticle['description'] as $sLang => $sLabel) {
				fputcsv($hFileEntityDescription, array($iID,$sLang,$sLabel));
				// echo "insert into entity_description values (".$iID.",'".pg_escape_string($sLang)."','".pg_escape_string($sLabel)."');\n";
			}

			foreach($aArticle['aliases'] as $sLang => $aLabels) {
				$aUniqueAlias = array();
				foreach($aLabels as $sLabel) {
					if (!isset($aUniqueAlias[$sLabel]) && $sLabel) {
					fputcsv($hFileEntityAlias, array($iID,$sLang,$sLabel));
					// echo "insert into entity_alias values (".$iID.",'".pg_escape_string($sLang)."','".pg_escape_string($sLabel)."');\n";
					$aUniqueAlias[$sLabel] = true;
				}
			}
		}

		foreach($aArticle['links'] as $sLang => $sLabel) {
			fputcsv($hFileEntityLink, array($iID,$sLang,$sLabel));
			// echo "insert into entity_link values (".$iID.",'".pg_escape_string($sLang)."','".pg_escape_string($sLabel)."');\n";
		}


		if (isset($aArticle['claims'])) {

			foreach($aArticle['claims'] as $iClaim => $aClaim) {

				$bFail = false;
			if ($aClaim['m'][0] == 'novalue') continue;
			if ($aClaim['m'][0] == 'somevalue') continue;
			$iPID = (int)$aClaim['m'][1];
			if ($aClaim['m'][0] != 'value') $bFail = true;
			if ($aClaim['m'][2]== 'wikibase-entityid') {

				if ($aClaim['m'][3]['entity-type'] != 'item') $bFail = true;
				fputcsv($hFileEntityProperty, array($iID,$iClaim,$iPID,null,$aClaim['m'][3]['numeric-id'],null,null));
				// echo "insert into entity_property values (nextval('seq_entity_property'),".$iID.",".$iPID.",null,".$aClaim['m'][3]['numeric-id'].",null);\n";

			} elseif ($aClaim['m'][2] == 'globecoordinate') {

				if ($aClaim['m'][3]['globe'] != 'http://www.wikidata.org/entity/Q2') $bFail = true;
				fputcsv($hFileEntityProperty, array($iID,$iClaim,$iPID,null,null,"SRID=4326;POINT(".((float)$aClaim['m'][3]['longitude'])." ".((float)$aClaim['m'][3]['latitude']).")",null));
				// echo "insert into entity_property values (nextval('seq_entity_property'),".$iID.",".$iPID.",null,null,ST_SetSRID(ST_MakePoint(".((float)$aClaim['m'][3]['longitude']).", ".((float)$aClaim['m'][3]['latitude'])."),4326));\n";

			} elseif ($aClaim['m'][2] == 'time') {
				// TODO!
/*
		if ($aClaim['m'][3]['calendarmodel'] == 'http://www.wikidata.org/entity/Q1985727') {
			// Gregorian
			if (preg_match('#(\\+|-)0*([0-9]{4})-([0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2})Z#', $aClaim['m'][3]['time'], $aMatch)) {
				if ((int)$aMatch[2] < 4700 && ) {
					$sDateString = $aMatch[2].'-'.$aMatch[3].($aClaim['m'][3]['timezone']>=0?'+':'').$aClaim['m'][3]['timezone'].($aMatch[1]=='-'?' bc':'');
					fputcsv($hFileEntityProperty, array($iID,$iClaim,$iPID,null,null,null,$sDateString));
				}
			} else {
//				$bFail = true;
			}
		} elseif ( $aClaim['m'][3]['calendarmodel'] != 'http://www.wikidata.org/entity/Q1985786') {
/ *
			// Julian
			if (preg_match('#(\\+|-)0*([0-9]{4})-([0-9]{2})-([0-9]{2})T([0-9]{2}:[0-9]{2}:[0-9]{2})Z#', $aClaim['m'][3]['time'], $aMatch)) {
var_dump($aMatch);
exit;
$iDayCount = juliantojd(2, 11, 1732);
var_dump($iDayCount, jdtogregorian($iDayCount));
			} else {
				$bFail = true;
exit;
			}
exit;
* /
		} else {
//			$bFail = true;
		}
*/
			} elseif ($aClaim['m'][2] == 'string') {

				// echo "insert into entity_property values (nextval('seq_entity_property'),".$iID.",".$iPID.",'".pg_escape_string($aClaim['m'][3])."',null,null);\n";
				fputcsv($hFileEntityProperty, array($iID,$iClaim,$iPID,$aClaim['m'][3],null,null,null));

			} else {

				$bFail = true;

			}

			// Don't care about sources:	if ($aClaim['refs'] != array()) $bFail = true;

			if ($bFail) {
				var_dump($sTitle);
				var_dump($aClaim);
			} else {
				// process
			}

		}

			}
		}
	}
	fclose($hFile);
	fclose($hFileEntity);
	fclose($hFileEntityLabel);
	fclose($hFileEntityDescription);
	fclose($hFileEntityAlias);
	fclose($hFileEntityLink);
	fclose($hFileEntityProperty);
}