<?php
/* Copyright (C) 2017  Laurent Destailleur <eldy@users.sourceforge.net>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 * or see https://www.gnu.org/
 */

/**
 * \file		htdocs/core/js/lib_gravatar.js.php
 * \brief		File that include javascript functions (included if option use_javascript activated)
 * 				JQuery (providing object $) library must be loaded before this file.
 */

//if (! defined('NOREQUIREUSER')) define('NOREQUIREUSER', '1');	// Not disabled cause need to load personalized language
//if (! defined('NOREQUIREDB'))   define('NOREQUIREDB', '1');
if (!defined('NOREQUIRESOC')) {
	define('NOREQUIRESOC', '1');
}
//if (! defined('NOREQUIRETRAN')) define('NOREQUIRETRAN', '1');	// Not disabled cause need to do translations
if (!defined('NOCSRFCHECK')) {
	define('NOCSRFCHECK', 1);
}
if (!defined('NOTOKENRENEWAL')) {
	define('NOTOKENRENEWAL', 1);
}
if (!defined('NOLOGIN')) {
	define('NOLOGIN', 1);
}
if (!defined('NOREQUIREMENU')) {
	define('NOREQUIREMENU', 1);
}
if (!defined('NOREQUIREHTML')) {
	define('NOREQUIREHTML', 1);
}
if (!defined('NOREQUIREAJAX')) {
	define('NOREQUIREAJAX', '1');
}

session_cache_limiter('public');

require_once '../../main.inc.php';

// Define javascript type
top_httphead('text/javascript; charset=UTF-8');
// Important: Following code is to avoid page request by browser and PHP CPU at each Dolibarr page access.
if (empty($dolibarr_nocache)) {
	header('Cache-Control: max-age=10800, public, must-revalidate');
} else {
	header('Cache-Control: no-cache');
}

?>

function get_avatar_from_service(service, userid, size) {
	// this return the url that redirects to the according user image/avatar/profile picture
	// implemented services: google profiles, facebook, gravatar, twitter, tumblr, default fallback
	// for google   use get_avatar_from_service('google', profile-name or user-id , size-in-px )
	// for facebook use get_avatar_from_service('facebook', vanity url or user-id , size-in-px or size-as-word )
	// for gravatar use get_avatar_from_service('gravatar', md5 hash email@adress, size-in-px )
	// for twitter  use get_avatar_from_service('twitter', username, size-in-px or size-as-word )
	// for tumblr   use get_avatar_from_service('tumblr', blog-url, size-in-px )
	// everything else will go to the fallback
	// google and gravatar scale the avatar to any site, others will guided to the next best version
	var url = '';

	switch (service) {

	case "google":
		// see http://googlesystem.blogspot.com/2011/03/unedited-google-profile-pictures.html (couldn't find a better link)
		// available sizes: all, google rescales for you
		url = "http://profiles.google.com/s2/photos/profile/" + userid + "?sz=" + size;
		break;

	case "facebook":
		// see https://developers.facebook.com/docs/reference/api/
		// available sizes: square (50x50), small (50xH) , normal (100xH), large (200xH)
		var sizeparam = '';
		if (isNumberOrNot(size)) {
			if (size >= 200) {
				sizeparam = 'large'
			};
			if (size >= 100 && size < 200) {
				sizeparam = 'normal'
			};
			if (size >= 50 && size < 100) {
				sizeparam = 'small'
			};
			if (size < 50) {
				sizeparam = 'square'
			};
		} else {
			sizeparam = size;
		}
		url = "https://graph.facebook.com/" + userid + "/picture?type=" + sizeparam;
		break;

	case "gravatar":
		// see http://en.gravatar.com/site/implement/images/
		// available sizes: all, gravatar rescales for you
		url = "http://www.gravatar.com/avatar/" + userid + "?s=" + size
		break;

	case "twitter":
		// see https://dev.twitter.com/docs/api/1/get/users/profile_image/%3Ascreen_name
		// available sizes: bigger (73x73), normal (48x48), mini (24x24), no param will give you full size
		var sizeparam = '';
		if (isNumberOrNot(size)) {
			if (size >= 73) {
				sizeparam = 'bigger'
			};
			if (size >= 48 && size < 73) {
				sizeparam = 'normal'
			};
			if (size < 48) {
				sizeparam = 'mini'
			};
		} else {
			sizeparam = size;
		}

		url = "http://api.twitter.com/1/users/profile_image?screen_name=" + userid + "&size=" + sizeparam;
		break;

	case "tumblr":
		// see http://www.tumblr.com/docs/en/api/v2#blog-avatar
		//TODO do something smarter with the ranges
		// available sizes: 16, 24, 30, 40, 48, 64, 96, 128, 512
		var sizeparam = '';
		if (size >= 512) {
			sizeparam = 512
		};
		if (size >= 128 && size < 512) {
			sizeparam = 128
		};
		if (size >= 96 && size < 128) {
			sizeparam = 96
		};
		if (size >= 64 && size < 96) {
			sizeparam = 64
		};
		if (size >= 48 && size < 64) {
			sizeparam = 48
		};
		if (size >= 40 && size < 48) {
			sizeparam = 40
		};
		if (size >= 30 && size < 40) {
			sizeparam = 30
		};
		if (size >= 24 && size < 30) {
			sizeparam = 24
		};
		if (size < 24) {
			sizeparam = 16
		};

		url = "http://api.tumblr.com/v2/blog/" + userid + "/avatar/" + sizeparam;
		break;

	default:
		// http://www.iconfinder.com/icondetails/23741/128/avatar_devil_evil_green_monster_vampire_icon
		// find your own
		url = "http://i.imgur.com/RLiDK.png"; // 48x48
	}


	return url;
}


// helper methods

function isNumberOrNot(n) {
	// see http://stackoverflow.com/questions/18082/validate-numbers-in-javascript-isnumeric
	return !isNaN(parseFloat(n)) && isFinite(n);
}

// End of lib_gravatar.js.php
