[WIP] Git Release Script

release.php

#!/usr/bin/env php

<?php

/**
 * updateComposerManifest
 */
#function updateComposerManifest($version = null) {
#	$composerManifest = print_r(json_decode(file_get_contents('composer.json'), true));
#	if (isset($composerManifest['version']) {
#		$composerManifest['version'] = $version;
#		$output = json_encode($composerManifest, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) . PHP_EOL;
#		file_put_contents('composer.json', $output);
#	}
#}

/**
 * Gets the commit message from a git hash
 *
 * @param string $hash
 * @return string
 */
function getCommitMessage($hash)
{
    return shell_exec('git log --format=%B -n 1 ' . $hash);
}

/**
 * Gets the commits
 *
 * @param string $latestVersion
 * @param string $version
 * @return array
 */
function getCommits($latestVersion, $version)
{
    $command = sprintf(
        'git log --oneline --pretty=format:"%%h:::" %s..%s',
        $latestVersion,
        $version
    );

    return explode(':::', shell_exec($command));
}

/**
 * @param string $branch
 */
function createBranch($branch)
{
    $command = sprintf('git checkout -b %s', $branch);
    shell_exec($command);
}

/**
 * @param string $tag
 */
function createTag($tag)
{
    $command = sprintf('git tag %s', $tag);
    shell_exec($command);
}

/**
 * @param string $branch
 */
function checkout($branch)
{
    $command = sprintf('git checkout %s', $branch);
    shell_exec($command);
}

/**
 * @param string $version
 */
function pushBranch($version)
{
    $command = sprintf('git push origin %s', $version);
    shell_exec($command);
}

/**
 * @param string $tag
 */
function pushTag($tag)
{
    $command = sprintf('git push origin %s', $tag);
    shell_exec($command);
}

function pull($version)
{
    $command = sprintf('git pull origin %s', $version);
    shell_exec($command);
}

/**
 * @param string $file
 */
function addFile($file)
{
    $command = sprintf('git add %s', $file);
    shell_exec($command);
}

/**
 * @param string $message
 */
function commit($message)
{
    $command = sprintf('git commit -m %s', $message);
    shell_exec($command);
}

/**
 * createReleaseNotes
 *
 * @param string $latestVersion
 * @param string $version
 */
function createReleaseNotes($latestVersion, $version)
{
    if (!$version) {
        throw new InvalidArgumentException('The parameter $value is missing.', 1492600644);
    }

    $date = new DateTime('now');
    $releaseNotes = 'ReleaseNotes.md';
    $content = sprintf('# Version %s (%s)', $version, $date->format('d.m.Y')) . PHP_EOL;

    $commits = array_filter(getCommits($latestVersion, $version), function ($value) {
        return $value !== '';
    });

    foreach ($commits as $commit) {
        $content .= '###' . getCommitMessage(trim($commit));
    }

    file_put_contents($releaseNotes, $content);
}

checkout($argv[1]);
pull($argv[1]);

createBranch($argv[2]);
pushBranch($argv[2]);

createTag('v' . $argv[2]);
pushTag('v' . $argv[2]);

checkout('master');

#createReleaseNotes($argv[1], $argv[2]);