<?php

global $champs;
$champs = Array(
	'nom_sel' => 'Espèce',
	'nom_sel_nn' => 'Numéro nomenclatural',
	'nom_ret' => 'Nom retenu',
	'nom_ret_nn' => 'Numéro nomenclatural nom retenu',
	'nt' => 'Numéro taxonomique',
	'famille' => 'Famille',
	'nom_referentiel' => 'Referentiel taxonomique',
	'zone_geo' => 'Commune',
	'ce_zone_geo' => 'Identifiant Commune',
	'date_observation' => 'Date',
	'lieudit' => 'Lieu-dit',
	'station' => 'Station',
	'milieu' => 'Milieu',
	'commentaire' => 'Notes',
	'latitude' => 'Latitude',
	'longitude' => 'Longitude',
	'altitude' => 'Altitude',
	'geodatum' => 'Référentiel Géographique',

	'ordre' => 'Ordre',
	'id_observation' => 'Identifiant',

	'mots_cles_texte' => 'Mots Clés',

	'date_creation' => 'Date Création',
	'date_modification' => 'Date Modification',

	'transmission' => 'Transmis',
	'date_transmission' => 'Date Transmission',
	'abondance' => 'Abondance',
	'certitude' => 'Certitude',
	'phenologie' => 'Phénologie',
	'images' => 'Image(s)',
	'nom_commun' => 'Nom Commun',

	'observateur' => 'Observateur',
);

define('URLPREFIX', 'service:cel:');

function cel_get_obs() {
	$URL = DOMAIN . '/' . URLPREFIX . 'InventoryObservationList/' . USER;
	// 5000 (memory_limit)
	return json_decode(file_get_contents($URL . '/?limite=5000&numero_page=0'));
}

function cel_get_images() {
	$URL = DOMAIN . '/' . URLPREFIX . 'InventoryImageList/' . USER;
	return json_decode(file_get_contents($URL . '/?limite=100000&numero_page=0'));
}

function cel_delete_obs($obs) {
	$URL = DOMAIN . '/' . URLPREFIX . 'InventoryObservationList/' . USER;
	$ch = curl_init();

	//set the url, number of POST vars, POST data
	curl_setopt($ch,CURLOPT_URL, $URL . '/' . implode(',', $obs));
	curl_setopt($ch,CURLOPT_POSTFIELDS, array('action' => 'DELETE'));
	curl_setopt($ch,CURLOPT_RETURNTRANSFER, TRUE);

	if(DEBUG) @fwrite(STDERR, sprintf("curl -F action=DELETE '%s/%s'\n", $URL, implode(',', $obs)));
	//execute post
	$result = curl_exec($ch);
	curl_close($ch);
	return $result;
}

function cel_delete_image($img) {
	$URL = DOMAIN . '/' . URLPREFIX . 'InventoryImageList/' . USER;
	$ch = curl_init();

	//set the url, number of POST vars, POST data
	curl_setopt($ch,CURLOPT_URL, $URL . '/' . implode(',', $img));
	curl_setopt($ch,CURLOPT_POSTFIELDS, array('action' => 'DELETE'));
	curl_setopt($ch,CURLOPT_RETURNTRANSFER, TRUE);
	//execute post
	$result = curl_exec($ch);
	curl_close($ch);
	return $result;
}


function cel_delete_all_obs() {
    while( ($obs = cel_get_obs()) ) {
	$ordres = array_map(function($item) { return $item->ordre; }, $obs);
	// les chunks permettent d'éviter des REQUEST-URI too long (500 id * 4 digits + 500 (virgules)) < 4k
	while( $ordres_chunk = array_splice($ordres, 0, 500)) {
	    cel_delete_obs($ordres_chunk);
	}
    }
}


function cel_delete_all_images() {
	$img = cel_get_images();
	$ids = array_map(function($item) { return $item->id_image; }, $img);
	cel_delete_image($ids);
}

function cel_upload_image($file) {
	if(! file_exists($file)) return NULL;
	$URL = DOMAIN . '/' . URLPREFIX . 'InventoryImage';

	$ch = curl_init();

	//set the url, number of POST vars, POST data
	curl_setopt($ch,CURLOPT_URL, $URL);
	curl_setopt($ch,CURLOPT_POSTFIELDS, array(
		'file' => '@' . $file,
		'ce_utilisateur' => USER
	));

	//curl_setopt($ch,CURLOPT_RETURNTRANSFER, TRUE);
	//execute post
	if(DEBUG) @fwrite(STDERR, sprintf("curl -F file=@%s '%s'\n", $file, $URL));

	$result = curl_exec($ch);
	curl_close($ch);
	return $result;
}

function cel_link_images($user, $id_image, $id_obs) {
	$URL = DOMAIN . '/' . URLPREFIX . 'inventoryImageLink/';
	$ch = curl_init();

	//set the url, number of POST vars, POST data
	curl_setopt($ch,CURLOPT_URL, $URL);
	curl_setopt($ch,CURLOPT_POSTFIELDS, array(
		'id_image' => $id_obs,
		'id_observation' => $id_obs,
		'ce_utilisateur' => $user
	));

	curl_setopt($ch,CURLOPT_RETURNTRANSFER, TRUE);
	//execute post
	$result = curl_exec($ch);
	curl_close($ch);
	return $result;
}


function auth() {
	// TODO: CURLOPT_NETRC + Cel API support
	if(!defined('EMAIL') || !defined('PASS') || ! EMAIL || ! PASS) return FALSE;
	if(defined('COOKIE') && COOKIE) return TRUE;
	$URL = DOMAIN . '/' . URLPREFIX . 'User/' . EMAIL . '/' . PASS;

	$ch = curl_init();

	//set the url, number of POST vars, POST data
	curl_setopt($ch,CURLOPT_URL, $URL);
	curl_setopt($ch,CURLOPT_HEADER, true);
	curl_setopt($ch,CURLOPT_RETURNTRANSFER, TRUE);

	$result = curl_exec($ch);
	curl_close($ch);
	$sess = $id = array();
	preg_match('/.*PHPSESSID=(\w+)/', $result, $sess);
	preg_match('/"id_utilisateur":"(\d+)"/', $result, $id);

	if(DEBUG) @fwrite(STDERR, "curl \"".$URL ."\" : {$sess[1]} / {$id[1]}\n");
	if(isset($sess[1])) {
		define('COOKIE', $sess[1]);
		if(!defined('USER')) {
			if(!isset($id[1])) return FALSE;
			define('USER', $id[1]);
		}
		return TRUE;
	}
	return FALSE;
}

function genCSV($d = Array()) {
	$out = fopen("php://temp", 'r+');
	// don't filter-out unknown field (for testing)
	// $d = array_intersect_key($d, $GLOBALS['champs']);
	$head = array();
	foreach($d as $k => $v) {
		if(isset($GLOBALS['champs'][$k])) $head[$GLOBALS['champs'][$k]] = $v;
		else $head[$k] = $v;
	}
	fputcsv($out, array_keys($head) , ',', '"');
	fputcsv($out, array_values($head) , ',', '"');
	rewind($out);
	$csv = stream_get_contents($out);
	fclose($out);
	return $csv;
}

function import($d) {
	$URL = DOMAIN . '/' . URLPREFIX . 'ImportXLS';
	if(!is_file($d)) return FALSE;
	$ch = curl_init();

	// curl does not support setting filename="X.csv";type=application/octet-stream'
	// with plain POST variables

	curl_setopt($ch,CURLOPT_URL, $URL);
	curl_setopt($ch,CURLOPT_POSTFIELDS, array(
		'upload' => '@' . $d . ';filename=test.csv',
		'utilisateur' => USER
	));

	curl_setopt($ch,CURLOPT_RETURNTRANSFER, TRUE);

	if(DEBUG) fwrite(STDERR, "curl -F \"upload=@$d;filename=test.csv\" -F utilisateur=" . USER . " \"$URL\"\n");

	//execute post
	$result = curl_exec($ch);
	curl_close($ch);
	return $result;
}

function importXLS($d) {
	$URL = DOMAIN . '/' . URLPREFIX . 'ImportXLS';
	if(!is_file($d)) return FALSE;
	exec("csvtool -o /tmp/a.csv col 1- $d");
	exec(__DIR__ . "/bin/csv2xls -v 0 -f -o /tmp/a /tmp/a.csv &>/dev/null");
	if(DEBUG) fwrite(STDERR,
					 "csvtool -o /tmp/a.csv col 1- $d;\n" . 
					 __DIR__ . "/bin/csv2xls -v 0 -f -o /tmp/a /tmp/a.csv\n");
	$d = "/tmp/a.xls";
	if(!is_file($d)) { die('error: ' . __FILE__ . ':' . __LINE__); }

	$ch = curl_init();

	// curl does not support setting filename="X.csv";type=application/octet-stream'
	// with plain POST variables

	curl_setopt($ch,CURLOPT_URL, $URL);
	curl_setopt($ch,CURLOPT_POSTFIELDS, array(
		'upload' => '@' . $d . ';filename=test.xls',
		'utilisateur' => USER
	));

	curl_setopt($ch,CURLOPT_RETURNTRANSFER, TRUE);

	if(DEBUG) fwrite(STDERR, "curl -F \"upload=@$d;filename=test.xls\" -F utilisateur=" . USER . " \"$URL\"\n");

	//execute post
	$result = curl_exec($ch);
	curl_close($ch);
	return $result;
}

function export($cols = "standard,avance") {
	if(!defined('COOKIE')) return FALSE;

	$URL = DOMAIN . '/' . URLPREFIX . 'CelWidgetExport/export?';
	$URL .= http_build_query(array('colonnes' => $cols,
								   'id_utilisateur' => USER,
								   'format' => 'csv'));
	$ch = curl_init();

	curl_setopt($ch,CURLOPT_URL, $URL);
	curl_setopt($ch,CURLOPT_COOKIE, 'PHPSESSID=' . COOKIE);

	curl_setopt($ch,CURLOPT_RETURNTRANSFER, TRUE);

	if(DEBUG) fwrite(STDERR, "curl -b PHPSESSID=" . COOKIE . ' "' . $URL ."\"\n");
	//execute post
	$result = curl_exec($ch);
	curl_close($ch);
	return $result;
}

function exportXLS($cols = "standard,avance") {
	if(!defined('COOKIE')) return FALSE;

	$file = "/tmp/b.xls";

	$URL = DOMAIN . '/' . URLPREFIX . 'CelWidgetExport/export?';
	$URL .= http_build_query(array('colonnes' => $cols,
								   'id_utilisateur' => USER,
								   'format' => 'xls'));
	$ch = curl_init();

	curl_setopt($ch,CURLOPT_URL, $URL);
	curl_setopt($ch,CURLOPT_COOKIE, 'PHPSESSID=' . COOKIE);

	$fh = fopen($file, 'w'); 
	curl_setopt($ch,CURLOPT_FILE, $fh);

	if(DEBUG) fwrite(STDERR, "curl -o $file -b PHPSESSID=" . COOKIE . ' "' . $URL ."\"\n");
	//execute post
	curl_exec($ch);

	fflush($fh); 
	fclose($fh);
	curl_close($ch);

	// if(DEBUG) fwrite(STDERR, "xls2csv $file\n");
	// exec("xls2csv $file", $result, $ret);
	// return implode("\n", $result);
	if(DEBUG) fwrite(STDERR, __DIR__ . "/bin/xls2csv-separate-sheets.pl -i $file\n");
	exec(__DIR__ . "/bin/xls2csv-separate-sheets.pl -i $file &>/dev/null", $result, $ret);
	$newfile = substr($file, 0, -4) . '-Liste' . '.csv';

	// because xls2csv-separate-sheets.pl does latin9
	if(DEBUG) fwrite(STDERR, "iconv -f latin9 -t utf8 $newfile >| /tmp/.x; mv -f /tmp/.x $newfile\n");
	exec("iconv -f latin9 -t utf8 -o /tmp/.x $newfile; mv -f /tmp/.x $newfile");
	if($ret) die('error: ' . __FILE__ . ':' . __LINE__);

	return file_get_contents($newfile);
}

function getCSV_line($csv, $line) {
	$line = max(0, intval($line - 1)); // -1 à cause du header

	$out = fopen("php://temp", 'rw');
	fwrite($out, $csv);
	rewind($out);

	$head = champsLongToShort(fgetcsv($out));
	while ($line--) fgetcsv($out);
	$l = fgetcsv($out);
	fclose($out);
	if(!$l) return FALSE;
	// xls2csv-separate-sheets.pl supprime les trailing champs vides
	if(count($l) != count($head)) {
		$l += array_fill(count($l), count($head) - count($l), "");
	}
	return array_combine($head, $l);
}


function champsLongToShort($a) {
    if(! $a) return array();
	$r = array();
	$x = array_flip($GLOBALS['champs']);
	foreach($a as $k => $v) {
		if(isset($x[$v])) $r[$k] = $x[$v];
		else $r[$k] = -1;
	}
	return $r;
}

function champsLongToShort2($a) {
	$r = array();
	$x = array_flip($GLOBALS['champs']);
	foreach($a as $k => $v) {
		if(isset($x[$k])) $r[$x[$k]] = $v;
		else $r[$k] = $v;
	}
	return $r;
}