<?php
/**
 * Piwik - Open source web analytics
 *
 * @link http://piwik.org
 * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
 */

/**
 * Base type for all integration test fixtures. Integration test fixtures
 * add visit and related data to the database before a test is run. Different
 * tests can use the same fixtures.
 * 
 * This class defines a set of helper methods for fixture types. The helper
 * methods are public, but ideally they should only be used by fixture types.
 * 
 * NOTE: YOU SHOULD NOT CREATE A NEW FIXTURE UNLESS THERE IS NO WAY TO MODIFY
 * AN EXISTING FIXTURE TO HANDLE YOUR USE CASE.
 * 
 * Related TODO: we should try and reduce the amount of existing fixtures by
 *                merging some together.
 */
abstract class Test_Piwik_BaseFixture extends PHPUnit_Framework_Assert
{
	/** Adds data to Piwik. Creates sites, tracks visits, imports log files, etc. */
	public abstract function setUp();
	
	/** Does any clean up. Most of the time there will be no need to clean up. */
	public abstract function tearDown();
	
    /**
     * Creates a website, then sets its creation date to a day earlier than specified dateTime
     * Useful to create a website now, but force data to be archived back in the past.
     *
     * @param string  $dateTime eg '2010-01-01 12:34:56'
     * @param int     $ecommerce
     * @param string  $siteName
     *
     * @return int    idSite of website created
     */
    public static function createWebsite( $dateTime, $ecommerce = 0, $siteName = 'Piwik test', $siteUrl = false,
    										 $siteSearch = 1, $searchKeywordParameters = null,
    										 $searchCategoryParameters = null )
    {
        $idSite = Piwik_SitesManager_API::getInstance()->addSite(
            $siteName,
            $siteUrl === false ? "http://piwik.net/" : $siteUrl,
            $ecommerce,
	        $siteSearch , $searchKeywordParameters, $searchCategoryParameters,
            $ips = null,
            $excludedQueryParameters = null,
            $timezone = null,
            $currency = null
        );

        // Manually set the website creation date to a day earlier than the earliest day we record stats for
        Zend_Registry::get('db')->update(Piwik_Common::prefixTable("site"),
            array('ts_created' => Piwik_Date::factory($dateTime)->subDay(1)->getDatetime()),
            "idsite = $idSite"
        );

        // Clear the memory Website cache
        Piwik_Site::clearCache();

        return $idSite;
    }

	/**
	 * Returns URL to Piwik root.
	 *
	 * @return string
	 */
	public static function getRootUrl()
	{
		$piwikUrl = Piwik_Url::getCurrentUrlWithoutFileName();

		$pathBeforeRoot = 'tests';
		// Running from a plugin
		if(strpos($piwikUrl, 'plugins/') !== false)
		{
			$pathBeforeRoot = 'plugins';
		}

		$testsInPath =  strpos($piwikUrl, $pathBeforeRoot.'/');
		if($testsInPath  !== false) {
			$piwikUrl = substr($piwikUrl, 0, $testsInPath);
		}
		return $piwikUrl;
	}

	/**
	 * Returns URL to the proxy script, used to ensure piwik.php
	 * uses the test environment, and allows variable overwriting
	 *
	 * @return string
	 */
	public static function getTrackerUrl()
	{
		return self::getRootUrl().'tests/PHPUnit/proxy/piwik.php';
	}

    /**
     * Returns a PiwikTracker object that you can then use to track pages or goals.
     *
     * @param         $idSite
     * @param         $dateTime
     * @param boolean $defaultInit If set to true, the tracker object will have default IP, user agent, time, resolution, etc.
     *
     * @return PiwikTracker
     */
    public static function getTracker($idSite, $dateTime, $defaultInit = true, $useLocal = false )
    {
    	if ($useLocal)
    	{
			require_once PIWIK_INCLUDE_PATH . '/tests/LocalTracker.php';
    		$t = new Piwik_LocalTracker($idSite, self::getTrackerUrl());
    	}
    	else
    	{
	        $t = new PiwikTracker( $idSite, self::getTrackerUrl());
        }
        $t->setForceVisitDateTime($dateTime);

        if($defaultInit)
        {
            $t->setIp('156.5.3.2');

            // Optional tracking
            $t->setUserAgent( "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.6) Gecko/20100625 Firefox/3.6.6 (.NET CLR 3.5.30729)");
            $t->setBrowserLanguage('fr');
            $t->setLocalTime( '12:34:06' );
            $t->setResolution( 1024, 768 );
            $t->setBrowserHasCookies(true);
            $t->setPlugins($flash = true, $java = true, $director = false);
        }
        return $t;
    }

	/**
     * Checks that the response is a GIF image as expected.
     * Will fail the test if the response is not the expected GIF
     *
     * @param $response
     */
    public static function checkResponse($response)
    {
        $trans_gif_64 = "R0lGODlhAQABAIAAAAAAAAAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==";
        $expectedResponse = base64_decode($trans_gif_64);
        self::assertEquals($expectedResponse, $response, "Expected GIF beacon, got: <br/>\n"
	        . var_export($response, true)
	        . "\n If you are stuck, you can enable \$GLOBALS['PIWIK_TRACKER_DEBUG']=true; in piwik.php to get more debug info."
            . base64_encode($response)
        );
    }
    
	public static function makeLocation( $city, $region, $country, $lat = null, $long = null )
	{
		return array(Piwik_UserCountry_LocationProvider::CITY_NAME_KEY => $city,
					  Piwik_UserCountry_LocationProvider::REGION_CODE_KEY => $region,
					  Piwik_UserCountry_LocationProvider::COUNTRY_CODE_KEY => $country,
					  Piwik_UserCountry_LocationProvider::LATITUDE_KEY => $lat,
					  Piwik_UserCountry_LocationProvider::LONGITUDE_KEY => $long);
	}

	/**
	 * Returns the super user token auth that can be used in tests. Can be used to
	 * do bulk tracking.
	 *
	 * @return string
	 */
	public static function getTokenAuth()
	{
	    return Piwik_UsersManager_API::getInstance()->getTokenAuth(
	    	Piwik_Config::getInstance()->superuser['login'],
	    	Piwik_Config::getInstance()->superuser['password']
    	);
    }
    
	/**
	 * Create one MAIL and two MOBILE scheduled reports
	 *
	 * Reports sent by mail can contain PNG graphs when the user specifies it.
	 * Depending on the system under test, generated images differ slightly.
	 * Because of this discrepancy, PNG graphs are only tested if the system under test
	 * has the characteristics described in 'canImagesBeIncludedInScheduledReports'
	 *
	 * @see canImagesBeIncludedInScheduledReports
	 * @param int $idSite id of website created
	 */
	public static function setUpScheduledReports($idSite)
	{
		// fake access is needed so API methods can call Piwik::getCurrentUserLogin(), e.g: 'PDFReports.addReport'
		$pseudoMockAccess = new FakeAccess;
		FakeAccess::$superUser = true;
		Zend_Registry::set('access', $pseudoMockAccess);

		// retrieve available reports
		$availableReportMetadata = Piwik_PDFReports_API::getReportMetadata($idSite, Piwik_PDFReports::EMAIL_TYPE);

		$availableReportIds = array();
		foreach($availableReportMetadata as $reportMetadata)
		{
			$availableReportIds[] = $reportMetadata['uniqueId'];
		}

		//@review should we also test evolution graphs?
		// set-up mail report
		Piwik_PDFReports_API::getInstance()->addReport(
			$idSite,
			'Mail Test report',
			'day', // overridden in getApiForTestingScheduledReports()
			0,
			Piwik_PDFReports::EMAIL_TYPE,
			Piwik_ReportRenderer::HTML_FORMAT, // overridden in getApiForTestingScheduledReports()
			$availableReportIds,
			array("displayFormat" => Piwik_PDFReports::DISPLAY_FORMAT_TABLES_ONLY)
		);

		// set-up sms report for one website
		Piwik_PDFReports_API::getInstance()->addReport(
			$idSite,
			'SMS Test report, one website',
			'day', // overridden in getApiForTestingScheduledReports()
			0,
			Piwik_MobileMessaging::MOBILE_TYPE,
			Piwik_MobileMessaging::SMS_FORMAT,
			array("MultiSites_getOne"),
			array("phoneNumbers"=>array())
		);

		// set-up sms report for all websites
		Piwik_PDFReports_API::getInstance()->addReport(
			$idSite,
			'SMS Test report, all websites',
			'day', // overridden in getApiForTestingScheduledReports()
			0,
			Piwik_MobileMessaging::MOBILE_TYPE,
			Piwik_MobileMessaging::SMS_FORMAT,
			array("MultiSites_getAll"),
			array("phoneNumbers"=>array())
		);

		if (self::canImagesBeIncludedInScheduledReports())
		{
			// set-up mail report with images
			Piwik_PDFReports_API::getInstance()->addReport(
				$idSite,
				'Mail Test report',
				'day', // overridden in getApiForTestingScheduledReports()
				0,
				Piwik_PDFReports::EMAIL_TYPE,
				Piwik_ReportRenderer::HTML_FORMAT, // overridden in getApiForTestingScheduledReports()
				$availableReportIds,
				array("displayFormat" => Piwik_PDFReports::DISPLAY_FORMAT_TABLES_AND_GRAPHS)
			);
		}
	}

	/**
	 * Return true if system under test has the following characteristics :
	 *  - php_uname() contains 'precise32' or 'ubuntu'
	 *  - phpversion() contains '5.3.10'
	 *  - 'GD Version' equals '2.0'
	 */
	public static function canImagesBeIncludedInScheduledReports()
	{
		$gdInfo = gd_info();
		return
			(stristr(php_uname(), 'precise32') || stristr(php_uname(), 'ubuntu')) &&
			stristr(phpversion(), '5.3.10') &&
			$gdInfo['GD Version'] == '2.0';
	}
	
	public static $geoIpDbUrl = 'http://piwik-team.s3.amazonaws.com/GeoIP.dat.gz';
	public static $geoLiteCityDbUrl = 'http://piwik-team.s3.amazonaws.com/GeoLiteCity.dat.gz';
	
	public static function downloadGeoIpDbs()
	{
		$geoIpOutputDir = PIWIK_INCLUDE_PATH.'/tests/lib/geoip-files';
		self::downloadAndUnzip(self::$geoIpDbUrl, $geoIpOutputDir, 'GeoIP.dat');
		self::downloadAndUnzip(self::$geoLiteCityDbUrl, $geoIpOutputDir, 'GeoIPCity.dat');
	}
	
	public static function downloadAndUnzip( $url, $outputDir, $filename )
	{
		$bufferSize = 1024 * 1024;
		
		if (!is_dir($outputDir)) 
		{
			mkdir($outputDir);
		}
		
		$deflatedOut = $outputDir.'/'.$filename;
		$outfileName = $deflatedOut.'.gz';
		
		if (file_exists($deflatedOut))
		{
			return;
		}
		
		$dump = fopen($url, 'rb');
		$outfile = fopen($outfileName, 'wb');
		$bytesRead = 0;
		while (!feof($dump))
		{
			fwrite($outfile, fread($dump, $bufferSize), $bufferSize);
			$bytesRead += $bufferSize;
		}
		fclose($dump);
		fclose($outfile);
		
		// unzip the dump
		exec("gunzip -c \"".$outfileName."\" > \"$deflatedOut\"", $output, $return);
		if ($return !== 0)
		{
			throw new Exception("gunzip failed($return): ".implode("\n", $output));
		}
	}
}