#!/usr/bin/env php
<?php

$projectDirHost = dirname(dirname(dirname($_SERVER['PHP_SELF'])));
$projectDirGuest = '/vagrant';
$homeDirHost = $projectDirHost . '/.idea/vagrant';
$pipe = 'vagrant ssh -c ';
$commandPrefix = '';

chdir($projectDirHost);

// Detect Host IP
$hostIpFile = $homeDirHost . '/host_ip';
if (!file_exists($hostIpFile)) {
    $ip = shell_exec('vagrant ssh -c "sudo ip route | awk \'/default/ { print \$3; exit; }\'"');
    file_put_contents($hostIpFile, $ip);
}
$hostIp = trim(file_get_contents($hostIpFile));
if (!filter_var($hostIp, FILTER_VALIDATE_IP)) {
    throw new Exception('Cannot detect host IP, got value `' . $hostIp . '`.');
}

// Detect Project Dir on Guest
$projectDirGuestFile = $homeDirHost . '/vm_project_dir';
if (file_exists($projectDirGuestFile)) {
    $projectDirGuest = trim(file_get_contents($projectDirGuestFile));
}
$homeDirGuest = $projectDirGuest . '/.idea/vagrant';

$applyMapping = function ($argument) use ($projectDirHost, $projectDirGuest, $homeDirHost, $homeDirGuest, $hostIp, &$coverageFileList) {
    // IP mapping
    $argument = str_replace(array('127.0.0.1', 'localhost'), $hostIp, $argument);

    // Paths mapping
    $filePath = $argument;
    if (strrpos($filePath, '.coverage') == strlen($filePath) - 9) {
        // Mapping output files to remote paths
        if (!is_dir($homeDirHost . '/output/')) {
            mkdir($homeDirHost . '/output/', 0777, true);
        }
        $argument = $homeDirGuest . '/output/' . basename($filePath);
        $coverageFileList[$filePath] = $homeDirHost . '/output/' . basename($filePath);
    } elseif (file_exists($filePath)) {
        if (strpos($filePath, $projectDirHost) !== false) {
            // Mapping project paths to remote paths
            $argument = str_replace($projectDirHost, $projectDirGuest, $filePath);
        } else {
            // Mapping any other local system paths to remote paths, upload files
            if (!is_dir($homeDirHost . '/scripts/')) {
                mkdir($homeDirHost . '/scripts/', 0777, true);
            }
            if (is_file($filePath)) {
                copy($filePath, $homeDirHost . '/scripts/' . basename($filePath));
            }
            $argument = $homeDirGuest . '/scripts/' . basename($filePath);
        }
    }

    return escapeshellarg($argument);
};

// Detect Command Prefix
$commandPrefixFile = $homeDirHost . '/vm_command_prefix';
if (file_exists($commandPrefixFile)) {
    $commandPrefix = trim(file_get_contents($commandPrefixFile));
}

$coverageFileList = array();

$arguments = $argv;
array_shift($arguments);
foreach ($arguments as $index => &$argument) {
    $argument = $applyMapping($argument);
}

// Get allowed environment variables
$allowedEnv = array('XDEBUG_CONFIG', 'IDE_PHPUNIT_CUSTOM_LOADER', 'IDE_PHPUNIT_PHPUNIT_PHAR', 'IDE_PHPUNIT_PHPUNIT_INCLUDE');
$env =  array();
foreach ($_SERVER as $name => $value) {
    if (in_array($name, $allowedEnv)) {
        $env[] = $name . '=' . $applyMapping($value);
    }
}

$includePaths = array('.', $projectDirGuest . '/vendor/phpunit/phpunit');
$arguments = array_merge(array('-d', 'include_path=' . implode(':', $includePaths)), $arguments);

passthru($pipe . escapeshellarg($commandPrefix. ' ' . implode(' ', $env) . ' php ' . implode(' ', $arguments)));

// Copy output files to their location, adapt paths
foreach ($coverageFileList as $filePath => $hostPath) {
    if (!file_exists($hostPath)) {
        @unlink($filePath);
    } else {
        $contents = file_get_contents($hostPath);
        $contents = str_replace($projectDirGuest, $projectDirHost, $contents);
        file_put_contents($filePath, $contents);
    }
}