deploy

#!/usr/bin/php
<?php
$help =	"usage: deploy [branch|tag] project\nif branch|tag is not specified " .
 		"it will use master as a fallback\n";

$production_dirs = array(
	'assemblyexpress' => 'assemblyexpress',
	'pentalogix' => 'pentalogix-www2',
	'order-manager' => 'quotetools',
	'order-manager-pl' => 'order-manager-pl',
	'stencils' => 'stencils-www',
	'pcbunlimited' => 'pcbunlimited'
);
/**
 * @return string	Current branch name if it is local branch or empty
 *					string if it is a (no branch) state
 */
function get_current_branch($git_repo) {
	$output = `cd $git_repo; git symbolic-ref HEAD`;
	if(strpos($output, '/') > -1) {
		$parts = explode('/', trim($output));
		return $parts[2];
	} else {
		return "";
	}
}

function branch_exists($git_repo, $branch_name) {
	$cmd = "cd $git_repo; git branch;";
	$output = `$cmd`;
	$branches = explode("\n", trim($output));
	foreach ($branches as $key => $branch) {
		$branch = trim($branch);
		if(strpos($branch, "*") > -1) {
			$current = explode(' ', $branch, 2);
			$branch = trim($current[1]);
		}
		$branches[$key] = $branch;
		if ($branch === $branch_name) {
			return true;
		}
	}
	return false;
}
function tag_exists($git_repo, $tag_name) {
	$cmd = "cd $git_repo; git tag;";
	$output = `$cmd`;
	$tags = explode("\n", trim($output));
	foreach ($tags as $key => $tag) {
		$tag = trim($tag);
		$tags[$key] = $tag;
		if ($tag === $tag_name) {
			return true;
		}
	}
	return false;
}

if ($argc > 1) {
	if ($argc > 2) {
		$branch = $argv[1];
		$project = $argv[2];
	} else {
		$project = $argv[1];
		$branch = 'master';
	}
	$log = "/tmp/deployment-$project.log";
	$website_dir = "/home/devsites/$project";
	$git_repo = "/var/home/webdev/git-repos/$project.git";
	$source = "/home/devsites/$project/";
	$destination = "coho1:/home/agustin/websites/$production_dir";

	if (!is_dir($website_dir)) {
		fwrite(STDOUT, "error: $website_dir doesn't exist or is not a directory\n");
		fwrite(STDOUT, $help);
		exit(-1);
	}
	if (!is_dir($git_repo)) {
		fwrite(STDOUT, "error: Git repo $git_repo not found\n");
		exit(-1);
	}
	if (!branch_exists($git_repo, $branch) and !tag_exists($git_repo, $branch)) {
		fwrite(STDOUT,	"error: the branch or tag your trying to use does not " .
						"exist in the servers repository\n");
		exit(-1);
	}
	if (!array_key_exists($project, $production_dirs)) {
		fwrite(STDOUT, "error: wrong configuration. Production dir not found\n");
		exit(-1);
	}
	$log_file = fopen($log, "a+");
	fwrite($log_file, '[' . date("F j, Y, g:i a") . "]\n");

	$production_dir = $production_dirs[$project];
	//$production_dir = 'xtreme';
	$current_branch = get_current_branch($git_repo);
	if($current_branch != $branch) {
		$switch = "sw-git-branch $project $branch";
		$output = `$switch`;
		fwrite(STDOUT, "switching to branch/tag $branch\n");
		fwrite(STDOUT, $output);
		fwrite($log_file, $output);
	}
	fwrite(STDOUT,  "Starting deployment to production server...\n");
	fwrite(STDOUT,  "file syncing started...\n");
	$rsync = "rsync -arvuz " . 
			 "--exclude-from=/var/home/webdev/git-repos/rsync_exclude.txt" .
			 " $source" .
			 " $destination";
	$output = `$rsync`;
	fwrite(STDOUT, $output);
	fwrite($log_file, $output);
	fclose($log_file);
} else {
	fwrite(STDOUT, $help);
}

?>