#!/usr/bin/perl
use strict;
use warnings;
use 5.010;
use Getopt::Long qw(GetOptions);
use FileHandle;

my $instance;
my $destroy = '';
my $brokenAppLink = '';
my $brokenBaseURL = '';

GetOptions('instance=s'  => \$instance,
		   'destroy'  => \$destroy,
		   'brokenAppLink'  => \$brokenAppLink,
		   'brokenBaseURL'  => \$brokenBaseURL) or usage();

# check parameters
if (!(defined $instance && $instance    >= 0)) { usage(); }

# set some defaults
my $maxWait         = 600;   # seconds to wait for instance to come up
my $waitCycle       = 10;
my $URLStem         = "http://academy.scandio.net";
my $ComposeFolder   = "instance$instance";
# Port stem for instance e.g. 8000
# 8080 -> Jira
# 8090 -> Confluence
my $PortStem        = 8000+($instance*100);
my $JiraPort = $PortStem+80;
my $ConfluencePort = $PortStem+90;
my $ConfluenceSynchronyPort = $PortStem+91;

if ($destroy)	{
	print "Destroying Instance $instance\n";
	system("cd $ComposeFolder && docker-compose down");
	system("rm -rf $ComposeFolder");
	exit(0);
}
# Copy Template folder to $ComposeFolder
`rsync -a compose/ $ComposeFolder`;


# Write new .env file with new ports
my $FHenv = new FileHandle("${ComposeFolder}/.env", "w");
unless ($FHenv) { die( "cannot create file ${ComposeFolder}/.env" );}
$FHenv->print("JIRA_PORT=$JiraPort\n");
$FHenv->print("CONFLUENCE_PORT=$ConfluencePort\n");
$FHenv->print("CONFLUENCE_SYNCHRONY_PORT=$ConfluenceSynchronyPort\n");
$FHenv->close;

# Start the Compose Stack
print "Starting instance $instance...\n";
system("cd $ComposeFolder && docker-compose up -d");


# wait for instance to come up, set new BaseURL
my $result;
my $resultConfluence;
my $resultJira;
my $waited       = 0;
if (!$brokenAppLink)	{
	do {
		print "    waiting for instance to become available (" . $waited . "s)...\n";
		$waited += $waitCycle;
		sleep $waitCycle;
		$resultJira = system("./updateJiraBaseURL --baseurl=${URLStem}:${JiraPort} -u=admin -p=admin");
		$resultConfluence = system("./updateConfluenceBaseURL --baseurl=${URLStem}:${ConfluencePort} -u=admin -p=admin > /dev/null 2>&1"); 
	} while (($resultJira ne "0" || $resultConfluence ne "0") && $waited < $maxWait); 
}

if (!$brokenBaseURL)	{
	system ("./createJCAppLink -j=${URLStem}:${JiraPort} -c=${URLStem}:${ConfluencePort} -u=admin -p=admin");
}

# check if update was successful
if ($waited >= $maxWait)
{
	print "Instance not available after $waited seconds";
	print "baseURL not updated - aborting\n";
	exit 0;
}

# restart container to activate context changes
print "    restarting container to activate new configuration\n";
system("cd $ComposeFolder && docker-compose up --force-recreate -d");

exit 0;



sub usage
{
	print "Usage: $0 --instance INSTANCENO [--destroy] [--brokenAppLink] [--brokenBaseURL\n";
	exit 1;
}