#!/usr/bin/php
<?php

// install : ln -s buildSDK/pre-commit .git/hooks/

// the recomendation is to check if the current commit is same as the one on any of the files/directories that need monitoring.

register_shutdown_function ( 'unlock');
lock();

trigger_action('build_docs', array('Roo.js', 'Roo/', 'Array.js', 'Function.js', 'Date.js', 'String.js', 'Number.js'));

$core = trigger_action_file('compile_core', 'dependancy_core.txt');
$ui = trigger_action_file('compile_ui',  'dependancy_ui.txt');
trigger_action_file('compile_bootstrap',  'dependancy_bootstrap.txt');
trigger_action_file('compile_mailer',  'dependancy_mailer.txt');
trigger_action_file('compile_calendar',  'dependancy_calendar.txt');

trigger_action('compile_less', array('less/'));
trigger_action('compile_scss', array('scss/'));

if ($core || $ui) {
    merge_files();
}

function lock()
{
    static $tries = 0;
    clearstatcache();
    if (file_exists(".git/pre-commit-running")) {
        if (file_exists(".git/pre-commit-pending")) {
            exit;
        }
        file_put_contents(".git/pre-commit-pending","\n");
        sleep(30); // wait 30 seconds
        unlink(".git/pre-commit-pending");
        $tries++;
        if ($tries > 3) {
            exit;
        }
    }
    file_put_contents(".git/pre-commit-running","\n");
}
function unlock()
{
    unlink(".git/pre-commit-running");
}
 
function changed_files()
{
    static $output = array();
    if (!empty($output)) {
        return $output;
    }
    $return = 0;
    exec('git rev-parse --verify HEAD 2> /dev/null', $output, $return);
    if ($return != 0) {
        exit;
    }
    
    exec("git diff-index --cached --name-only 'HEAD'", $output);
    return $output;
}

function trigger_action_file($fn, $filename)
{
    $ret = explode("\n",file_get_contents(__DIR__ . "/" . $filename));
    $add = array();
    foreach($ret as $r) {
        $r=trim($r);
        if (strlen($r)) {
            $add[] = str_replace('.','/', $r) . ".js";
        }
    }
    $ret[] = "buildSDK/".$filename;
    return trigger_action($fn, $add);
    
}

function trigger_action($fn, $files)
{
    
    foreach(changed_files() as $cg) {
        foreach($files as $f) {
            $f = trim($f);
            if ($f == $cg) {
                echo "RUNNING : $fn\n";
                $fn();
                return true;
            }
            if (substr($f, -1,1) == '/' && substr($cg,0, strlen($f)) == $f) {
                echo "RUNNING : $fn\n";
                $fn();
                return true;    
            }
        }
    }
    return false;
}

function build_docs()
{
    exec("roojspacker -i buildSDK/dependancy_core.txt  -i buildSDK/dependancy_ui.txt  " . 
    "-i buildSDK/dependancy_bootstrap.txt -i buildSDK/dependancy_calendar.txt " .
    "-i buildSDK/dependancy_svg.txt  " .
   "--doc-target=docs -D");
}
function compile_core()
{
    exec("roojspacker -t roojs-core.js -T roojs-core-debug.js -i buildSDK/dependancy_core.txt ");
}

function compile_ui()
{
    exec("roojspacker -t roojs-ui.js -T roojs-ui-debug.js -i buildSDK/dependancy_ui.txt");
}

function merge_files()
{
    exec("cat      roojs-core.js  roojs-ui.js >  roojs-all.js");
    exec("cat roojs-core-debug.js  roojs-ui-debug.js > roojs-debug.js");
}

 
function compile_bootstrap()
{
    exec("roojspacker -t roojs-bootstrap.js -T roojs-bootstrap-debug.js -i buildSDK/dependancy_bootstrap.txt");
}
 
function compile_calendar()
{
    exec("roojspacker -t roojs-calendar.js -T roojs-calendar-debug.js -i buildSDK/dependancy_calendar.txt");
}  
  
  
function compile_mailer()
{

    exec("roojspacker -t roojs-mailer.js -T roojs-mailer-debug.js -i buildSDK/dependancy_mailer.txt");
}  
 
function compile_docbook()
{
    exec("roojspacker -t roojs-doc.js -T roojs-doc-debug.js -i buildSDK/dependancy_doc.txt");
}

  

function compile_less()
{
    exec("php buildSDK/less-bootstrap-complier.php");
}

function compile_scss()
{
    exec("php buildSDK/scss-bootstrap.php");
}