<?php

require_once('include/acl_selectors.php');
require_once('include/message.php');
require_once('include/zot.php');
require_once("include/bbcode.php");
require_once('include/Contact.php');


function mail_post(&$a) {

	if(! local_channel())
		return;

	$replyto   = ((x($_REQUEST,'replyto'))      ? notags(trim($_REQUEST['replyto']))      : '');
	$subject   = ((x($_REQUEST,'subject'))      ? notags(trim($_REQUEST['subject']))      : '');
	$body      = ((x($_REQUEST,'body'))         ? escape_tags(trim($_REQUEST['body']))    : '');
	$recipient = ((x($_REQUEST,'messageto'))    ? notags(trim($_REQUEST['messageto']))    : '');
	$rstr      = ((x($_REQUEST,'messagerecip')) ? notags(trim($_REQUEST['messagerecip'])) : '');
	$expires   = ((x($_REQUEST,'expires')) ? datetime_convert(date_default_timezone_get(),'UTC', $_REQUEST['expires']) : NULL_DATE);

	// If we have a raw string for a recipient which hasn't been auto-filled,
	// it means they probably aren't in our address book, hence we don't know
	// if we have permission to send them private messages.
	// finger them and find out before we try and send it.

	if(! $recipient) {
		$channel = $a->get_channel();

		$ret = zot_finger($rstr,$channel);

		if(! $ret['success']) {
			notice( t('Unable to lookup recipient.') . EOL);
			return;
		} 
		$j = json_decode($ret['body'],true);

		logger('message_post: lookup: ' . $url . ' ' . print_r($j,true));

		if(! ($j['success'] && $j['guid'])) {
			notice( t('Unable to communicate with requested channel.'));
			return;
		}

		$x = import_xchan($j);

		if(! $x['success']) {
			notice( t('Cannot verify requested channel.'));
			return;
		}

		$recipient = $x['hash'];

		$their_perms = 0;

		$global_perms = get_perms();

		if($j['permissions']['data']) {
			$permissions = crypto_unencapsulate($j['permissions'],$channel['channel_prvkey']);
			if($permissions)
				$permissions = json_decode($permissions);
			logger('decrypted permissions: ' . print_r($permissions,true), LOGGER_DATA);
		}
		else
			$permissions = $j['permissions'];

		foreach($permissions as $k => $v) {
			if($v) {
				$their_perms = $their_perms | intval($global_perms[$k][1]);
			}
		}

		if(! ($their_perms & PERMS_W_MAIL)) {
 			notice( t('Selected channel has private message restrictions. Send failed.'));
			// reported issue: let's still save the message and continue. We'll just tell them
			// that nothing useful is likely to happen. They might have spent hours on it.  
			//			return;

		}
	}

//	if(feature_enabled(local_channel(),'richtext')) {
//		$body = fix_mce_lf($body);
//	}

	require_once('include/text.php');
	linkify_tags($a, $body, local_channel());

	if(! $recipient) {
		notice('No recipient found.');
		$a->argc = 2;
		$a->argv[1] = 'new';
		return;
	}

	// We have a local_channel, let send_message use the session channel and save a lookup
	
	$ret = send_message(0, $recipient, $body, $subject, $replyto, $expires);

	if($ret['success']) {
		xchan_mail_query($ret['mail']);
		build_sync_packet(0,array('conv' => array($ret['conv']),'mail' => array(encode_mail($ret['mail'],true))));
	}
	else {
		notice($ret['message']);
	}

	goaway(z_root() . '/mail/combined');
		
}

function mail_content(&$a) {

	$o = '';
	nav_set_selected('messages');

	if(! local_channel()) {
		notice( t('Permission denied.') . EOL);
		return login();
	}

	$channel = $a->get_channel();

	head_set_icon($channel['xchan_photo_s']);

	$cipher = get_pconfig(local_channel(),'system','default_cipher');
	if(! $cipher)
		$cipher = 'aes256';

	$tpl = get_markup_template('mail_head.tpl');
	$header = replace_macros($tpl, array(
		'$header' => t('Messages'),
	));

	if((argc() == 4) && (argv(2) === 'drop')) {
		if(! intval(argv(3)))
			return;
		$cmd = argv(2);
		$mailbox = argv(1);
		$r = private_messages_drop(local_channel(), argv(3));
		if($r) {
			//info( t('Message deleted.') . EOL );
		}
		goaway($a->get_baseurl(true) . '/mail/' . $mailbox);
	}

	if((argc() == 4) && (argv(2) === 'recall')) {
		if(! intval(argv(3)))
			return;
		$cmd = argv(2);
		$mailbox = argv(1);
		$r = q("update mail set mail_recalled = 1 where id = %d and channel_id = %d",
			intval(argv(3)),
			intval(local_channel())
		);
		$x = q("select * from mail where id = %d and channel_id = %d",
			intval(argv(3)),
			intval(local_channel())
		);
		if($x) {
			build_sync_packet(local_channel(),array('mail' => encode_mail($x[0],true)));
		}

		proc_run('php','include/notifier.php','mail',intval(argv(3)));

		if($r) {
				info( t('Message recalled.') . EOL );
		}
		goaway($a->get_baseurl(true) . '/mail/' . $mailbox . '/' . argv(3));

	}

	if((argc() == 4) && (argv(2) === 'dropconv')) {
		if(! intval(argv(3)))
			return;
		$cmd = argv(2);
		$mailbox = argv(1);
		$r = private_messages_drop(local_channel(), argv(3), true);
		if($r)
			info( t('Conversation removed.') . EOL );
		goaway($a->get_baseurl(true) . '/mail/' . $mailbox);
	}

	if((argc() > 1) && (argv(1) === 'new')) {
		
		$plaintext = true;

		$tpl = get_markup_template('msg-header.tpl');

		$header = replace_macros($tpl, array(
			'$baseurl' => $a->get_baseurl(true),
			'$editselect' => (($plaintext) ? 'none' : '/(profile-jot-text|prvmail-text)/'),
			'$nickname' => $channel['channel_address'],
			'$linkurl' => t('Please enter a link URL:'),
			'$expireswhen' => t('Expires YYYY-MM-DD HH:MM')
		));

		$a->page['htmlhead'] .= $header;

		$prename = '';
		$preid = '';

		if(x($_REQUEST,'hash')) {

			$r = q("select abook.*, xchan.* from abook left join xchan on abook_xchan = xchan_hash
				where abook_channel = %d and abook_xchan = '%s' limit 1",
				intval(local_channel()),
				dbesc($_REQUEST['hash'])
			);

			if(!$r) {
				$r = q("select * from xchan where xchan_hash = '%s' and xchan_network = 'zot' limit 1",
					dbesc($_REQUEST['hash'])
				);
			}

			if($r) {
				$prename = (($r[0]['abook_id']) ? $r[0]['xchan_name'] : $r[0]['xchan_addr']);
				$preurl = $r[0]['xchan_url'];
				$preid = (($r[0]['abook_id']) ? ($r[0]['xchan_hash']) : '');
			}
			else {
				notice( t('Requested channel is not in this network') . EOL );
			}

		}

		$tpl = get_markup_template('prv_message.tpl');
		$o .= replace_macros($tpl,array(
			'$new' => true,
			'$header' => t('Send Private Message'),
			'$to' => t('To:'),
			'$prefill' => $prename,
			'$preid' => $preid,
			'$subject' => t('Subject:'),
			'$subjtxt' => ((x($_REQUEST,'subject')) ? strip_tags($_REQUEST['subject']) : ''),
			'$text' => ((x($_REQUEST,'body')) ? htmlspecialchars($_REQUEST['body'], ENT_COMPAT, 'UTF-8') : ''),
			'$yourmessage' => t('Your message:'),
			'$parent' => '',
			'$attach' => t('Attach file'),
			'$insert' => t('Insert web link'),
			'$submit' => t('Send'),
			'$defexpire' => '',
			'$feature_expire' => ((feature_enabled(local_channel(),'content_expire')) ? true : false),
			'$expires' => t('Set expiration date'),
			'$feature_encrypt' => ((feature_enabled(local_channel(),'content_encrypt')) ? true : false),
			'$encrypt' => t('Encrypt text'),
			'$cipher' => $cipher,
		));

		return $o;
	}

	switch(argv(1)) {
		case 'combined':
			$mailbox = 'combined';
			break;
		case 'inbox':
			$mailbox = 'inbox';
			break;
		case 'outbox':
			$mailbox = 'outbox';
			break;
		default:
			$mailbox = 'combined';
			break;
	}

	$last_message = private_messages_list(local_channel(), $mailbox, 0, 1);

	$mid = ((argc() > 2) && (intval(argv(2)))) ? argv(2) : $last_message[0]['id'];

	$plaintext = true;

//	if( local_channel() && feature_enabled(local_channel(),'richtext') )
//		$plaintext = false;


	if($mailbox == 'combined') {
		$messages = private_messages_fetch_conversation(local_channel(), $mid, true);
	}
	else {
		$messages = private_messages_fetch_message(local_channel(), $mid, true);
	}

	if(! $messages) {
		//info( t('Message not found.') . EOL);
		return;
	}

	if($messages[0]['to_xchan'] === $channel['channel_hash'])
		$a->poi = $messages[0]['from'];
	else
		$a->poi = $messages[0]['to'];

//	require_once('include/Contact.php');

//	$a->set_widget('mail_conversant',vcard_from_xchan($a->poi,$get_observer_hash,'mail'));


	$tpl = get_markup_template('msg-header.tpl');
	
	$a->page['htmlhead'] .= replace_macros($tpl, array(
		'$nickname' => $channel['channel_address'],
		'$baseurl' => $a->get_baseurl(true),
		'$editselect' => (($plaintext) ? 'none' : '/(profile-jot-text|prvmail-text)/'),
		'$linkurl' => t('Please enter a link URL:'),
		'$expireswhen' => t('Expires YYYY-MM-DD HH:MM')
	));

	$mails = array();

	$seen = 0;
	$unknown = false;

	foreach($messages as $message) {

		$s = theme_attachments($message);

		$mails[] = array(
			'mailbox' => $mailbox,
			'id' => $message['id'],
			'mid' => $message['mid'],
			'from_name' => $message['from']['xchan_name'],
			'from_url' =>  chanlink_hash($message['from_xchan']),
			'from_photo' => $message['from']['xchan_photo_s'],
			'to_name' => $message['to']['xchan_name'],
			'to_url' =>  chanlink_hash($message['to_xchan']),
			'to_photo' => $message['to']['xchan_photo_s'],
			'subject' => $message['title'],
			'body' => smilies(bbcode($message['body']) . $s),
			'delete' => t('Delete message'),
			'dreport' => t('Delivery report'),
			'recall' => t('Recall message'),
			'can_recall' => (($channel['channel_hash'] == $message['from_xchan']) ? true : false),
			'is_recalled' => (intval($message['mail_recalled']) ? t('Message has been recalled.') : ''),
			'date' => datetime_convert('UTC',date_default_timezone_get(),$message['created'], 'c'),
		);
				
		$seen = $message['seen'];

	}

	$recp = (($message['from_xchan'] === $channel['channel_hash']) ? 'to' : 'from');

	$tpl = get_markup_template('mail_display.tpl');
	$o = replace_macros($tpl, array(
		'$mailbox' => $mailbox,
		'$prvmsg_header' => $message['title'],
		'$thread_id' => $mid,
		'$thread_subject' => $message['title'],
		'$thread_seen' => $seen,
		'$delete' =>  t('Delete Conversation'),
		'$canreply' => (($unknown) ? false : '1'),
		'$unknown_text' => t("No secure communications available. You <strong>may</strong> be able to respond from the sender's profile page."),
		'$mails' => $mails,
			
		// reply
		'$header' => t('Send Reply'),
		'$to' => t('To:'),
		'$reply' => true,
		'$subject' => t('Subject:'),
		'$subjtxt' => $message['title'],
		'$yourmessage' => sprintf(t('Your message for %s (%s):'), $message[$recp]['xchan_name'], $message[$recp]['xchan_addr']),
		'$text' => '',
		'$parent' => $message['parent_mid'],
		'$recphash' => $message[$recp]['xchan_hash'],
		'$attach' => t('Attach file'),
		'$insert' => t('Insert web link'),
		'$submit' => t('Submit'),
		'$defexpire' => '',
		'$feature_expire' => ((feature_enabled(local_channel(),'content_expire')) ? true : false),
		'$expires' => t('Set expiration date'),
		'$feature_encrypt' => ((feature_enabled(local_channel(),'content_encrypt')) ? true : false),
		'$encrypt' => t('Encrypt text'),
		'$cipher' => $cipher,
	));

	return $o;

}