#! /usr/bin/env php
<?php

// ./bin/tree_threader_splitter input_dir
//
// input_dir: a directory with a number of template files
//
// Split these into N groups, make each group into a zip file
// named "tree_threader_template_T_i"
// where T is the current time and i is the index.
// Put these in the download hierarchy,
// and write a file "tree_threader_template_files"
// containing the file names

$files_per_group = 10;

require_once("html/inc/dir_hier.inc");

if ($argc != 2) die("usage: tree_threader_splitter dir\n");
if (!is_dir($argv[1])) die("usage: tree_threader_splitter dir\n");

$now = time();
$flist = fopen("tree_threader_template_files", "w");

function start_group($i) {
	global $now;
	mkdir("/tmp/tree_threader_template_".$now."_$i");
}

function add_file_to_group($i, $path) {
	global $now;
	$dir = "/tmp/tree_threader_template_".$now."_$i";
	$cmd = "cp $path $dir";
	system($cmd);
}

$config = simplexml_load_string(file_get_contents("config.xml"));
if (!$config) die("can't parse config.xml");
$fanout = (int)$config->config->uldl_dir_fanout;

function finish_group($i) {
	global $now, $fanout, $flist;
	$dir = "tree_threader_template_".$now."_$i";
    $dirpath = "/tmp/$dir";
	$cmd = "zip -r $dirpath $dirpath";
	system($cmd);
	$f = "$dir.zip";
	$path = dir_hier_path($f, "download", $fanout);
	if (rename("/tmp/$f", $path)) {
        echo "renamed /tmp/$f to $path\n";
    } else {
		die("can't rename /tmp/$f to $path\n");
	}
    fprintf($flist, "$f\n");
}

$dir = $argv[1];
$d = opendir($dir);
$igp = 0;
$gpsize = 0;
while (($f = readdir($d)) !== false) {
    $p = "$dir/$f";
    echo "processing $p\n";
    if (!is_file($p)) continue;
	if ($gpsize == 0) {
		start_group($igp);
	}
	add_file_to_group($igp, $p);
	$gpsize++;
	if ($gpsize == $files_per_group) {
		finish_group($igp);
		$gpsize = 0;
		$igp++;
	}
}
if ($gpsize) {
	finish_group($igp);
}
fclose($flist);

?>