<?php
/**
* PHPCI - Continuous Integration for PHP
*
* @copyright    Copyright 2013, Block 8 Limited.
* @license      https://github.com/Block8/PHPCI/blob/master/LICENSE.md
* @link         http://www.phptesting.org/
*/

namespace PHPCI\Plugin;

/**
* PHP Unit Plugin - Allows PHP Unit testing.
* @author       Dan Cryer <dan@block8.co.uk>
* @package      PHPCI
* @subpackage   Plugins
*/
class PhpUnit implements \PHPCI\Plugin
{
    protected $args;
    protected $phpci;

    /**
     * @var string|string[] $directory The directory (or array of dirs) to run PHPUnit on
     */
    protected $directory;
    
    /**
     * @var string $runFrom When running PHPUnit with an XML config, the command is run from this directory
     */
    protected $runFrom;

    /**
     * @var string|string[] $xmlConfigFile The path (or array of paths) of an xml config for PHPUnit
     */
    protected $xmlConfigFile;

    public function __construct(\PHPCI\Builder $phpci, array $options = array())
    {
        $this->phpci        = $phpci;

        if (isset($options['directory'])) {
            $this->directory = $options['directory'];
        }

        if (isset($options['config'])) {
            $this->xmlConfigFile = $options['config'];
        }

        if (isset($options['run_from'])) {
            $this->runFrom = $options['run_from'];
        }

        if (isset($options['args'])) {
            $this->args = $options['args'];
        }
    }

    /**
    * Runs PHP Unit tests in a specified directory, optionally using specified config file(s).
    */
    public function execute()
    {
        $success = true;

        // Run any config files first. This can be either a single value or an array.
        if ($this->xmlConfigFile !== null) {
            $success &= $this->runConfigFile($this->xmlConfigFile);
        }

        // Run any dirs next. Again this can be either a single value or an array.
        if ($this->directory !== null) {
            $success &= $this->runDir($this->directory);
        }
        
        return $success;
    }

    protected function runConfigFile($configPath)
    {
        if (is_array($configPath)) {
            return $this->recurseArg($configPath, array($this, "runConfigFile"));
        } else {
            if ($this->runFrom) {
                $curdir = getcwd();
                chdir($this->phpci->buildPath.'/'.$this->runFrom);
            }

            $cmd = PHPCI_BIN_DIR . 'phpunit %s -c "%s"';
            $success = $this->phpci->executeCommand($cmd, $this->args, $this->phpci->buildPath . $configPath);
            
            if ($this->runFrom) {
                chdir($curdir);
            }

            return $success;
        }
    }

    protected function runDir($dirPath)
    {
        if (is_array($dirPath)) {
            return $this->recurseArg($dirPath, array($this, "runConfigFile"));
        } else {
            $curdir = getcwd();
            chdir($this->phpci->buildPath);
            $cmd = PHPCI_BIN_DIR . 'phpunit %s "%s"';
            $success = $this->phpci->executeCommand($cmd, $this->args, $this->phpci->buildPath . $dirPath);
            chdir($curdir);
            return $success;
        }
    }

    protected function recurseArg($array, $callable)
    {
        $success = true;
        foreach ($array as $subItem) {
            $success &= call_user_func($callable, $subItem);
        }
        return $success;
    }
}