#!/usr/bin/env php
<?php
/**
 * Creates an index.html with links to all files in a given directory structure, recursively.
 * This is useful for Amazon S3 uploads with static file hosting, since it doesn't list files by default.
 *
 * Assumes to run in a SilverStripe webroot
 */

/**
 * Run a command
 *
 * @param string $cmd
 * @param bool $echo
 */
function run($cmd, $echo = true)
{
    if ($echo) {
        echo "+ $cmd\n";
    }
    passthru($cmd, $returnVar);
    if ($returnVar > 0) {
        die($returnVar);
    }
}

/**
 * Check if an env variable is set
 *
 * @param $envs
 * @return bool
 */
function checkenv($envs)
{
    if ($envs) {
        foreach (explode(',', $envs) as $env) {
            if (!getenv($env)) {
                return false;
            }
        }
    }
    return true;
}

$opts = getopt('', [
    'artifacts-path:',
    'target-path:',
    'if-env:',
    'artifacts-base-url:',
]);

// --if-env=BEHAT_TEST means that this script will only be executed if the given environment var is set
if (empty($opts['if-env'])) {
    echo "--if-env option is mandatory";
    exit(0);
}
if (!checkenv($opts['if-env'])) {
    echo "Apache skipped; {$opts['if-env']} wasn't set.\n";
    exit(0);
}

if (isset($opts['artifacts-path'])) {
    $artifactsPath = $opts['artifacts-path'];
} elseif (is_dir(__DIR__ . '/artifacts/')) {
    $artifactsPath = __DIR__ . '/artifacts/';
} elseif (is_dir('~/artifacts/')) {
    $artifactsPath = '~/artifacts/';
} else {
    $artifactsPath = null;
}

$targetPath = $opts['target-path'];
$baseUrl = $opts['artifacts-base-url'];

if (!$artifactsPath || !is_dir($artifactsPath)) {
    echo "No artifacts found, skipped\n";
    exit(0);
}

echo "Installing artifacts script to ~/bin/artifacts\n";
run("curl -sL https://raw.githubusercontent.com/travis-ci/artifacts/master/install | bash");

echo "Creating {$artifactsPath}index.html...\n";

$html = '<html><head></head><body><ul>';
$objects = new RecursiveIteratorIterator(new RecursiveDirectoryIterator(realpath($artifactsPath)), RecursiveIteratorIterator::SELF_FIRST);
foreach ($objects as $name => $object) {
    if ($object->isDir()) {
        continue;
    }
    $relativePath = trim(str_replace(realpath($artifactsPath) . '/', '', $object->getPathName()), '/');
    $html .= sprintf('<li><a href="%s">%s</a></li>', $relativePath, $relativePath);
}
$html .= '</ul></body></html>';

file_put_contents("{$artifactsPath}index.html", $html);

run("~/bin/artifacts upload --permissions public-read --target-paths $targetPath $artifactsPath");

$fullPath = str_replace('//', '/', "$baseUrl/$targetPath/index.html");
$fullPath = str_replace('https:/s3', 'https://s3', $fullPath);
echo "Uploaded artifacts to $fullPath\n";
