<?php
/*
 * Laconica - a distributed open-source microblogging tool
 * Copyright (C) 2008, Controlez-Vous, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

if (!defined('LACONICA')) { exit(1); }

require_once(INSTALLDIR.'/lib/stream.php');

define('SUBSCRIPTIONS_PER_ROW', 4);
define('SUBSCRIPTIONS', 80);

class ShowstreamAction extends StreamAction {

	function handle($args) {

		parent::handle($args);

        $nickname_arg = $this->arg('nickname');
		$nickname = common_canonical_nickname($nickname_arg);

        # Permanent redirect on non-canonical nickname

        if ($nickname_arg != $nickname) {
            $args = array('nickname' => $nickname);
            if ($this->arg('page') && $this->arg('page') != 1) {
                $args['page'] = $this->arg['page'];
            }
            common_redirect(common_local_url('showstream', $args), 301);
            return;
        }

		$user = User::staticGet('nickname', $nickname);

		if (!$user) {
			$this->no_such_user();
			return;
		}

		$profile = $user->getProfile();

		if (!$profile) {
			common_server_error(_('User has no profile.'));
			return;
		}

		# Looks like we're good; start output

		# For YADIS discovery, we also have a <meta> tag

		header('X-XRDS-Location: '. common_local_url('xrds', array('nickname' =>
																   $user->nickname)));

		common_show_header($profile->nickname,
						   array($this, 'show_header'), $user,
						   array($this, 'show_top'));

		$this->show_profile($profile);

		$this->show_notices($user);

		common_show_footer();
	}

	function show_top($user) {
		$cur = common_current_user();

		if ($cur && $cur->id == $user->id) {
			common_notice_form('showstream');
		}

		$this->views_menu();

		$this->show_feeds_list(array(0=>array('href'=>common_local_url('userrss', array('nickname' => $user->nickname)),
											  'type' => 'rss',
											  'version' => 'RSS 1.0',
											  'item' => 'notices'),
									 1=>array('href'=>common_local_url('usertimeline', array('nickname' => $user->nickname)),
											  'type' => 'atom',
											  'version' => 'Atom 1.0',
											  'item' => 'usertimeline'),

									 2=>array('href'=>common_local_url('foaf',array('nickname' => $user->nickname)),
											  'type' => 'rdf',
											  'version' => 'FOAF',
											  'item' => 'foaf')));
	}

	function show_header($user) {
		# Feeds
		common_element('link', array('rel' => 'alternate',
									 'href' => common_local_url('api',
																array('apiaction' => 'statuses',
																	  'method' => 'user_timeline.rss',
																	  'argument' => $user->nickname)),
									 'type' => 'application/rss+xml',
									 'title' => sprintf(_('Notice feed for %s'), $user->nickname)));
		common_element('link', array('rel' => 'alternate feed',
									 'href' => common_local_url('api',
																array('apiaction' => 'statuses',
																	  'method' => 'user_timeline.atom',
																	  'argument' => $user->nickname)),
									 'type' => 'application/atom+xml',
									 'title' => sprintf(_('Notice feed for %s'), $user->nickname)));
		common_element('link', array('rel' => 'alternate',
									 'href' => common_local_url('userrss', array('nickname' =>
																			   $user->nickname)),
									 'type' => 'application/rdf+xml',
									 'title' => sprintf(_('Notice feed for %s'), $user->nickname)));
		# FOAF
		common_element('link', array('rel' => 'meta',
									 'href' => common_local_url('foaf', array('nickname' =>
																			  $user->nickname)),
									 'type' => 'application/rdf+xml',
									 'title' => 'FOAF'));
		# for remote subscriptions etc.
		common_element('meta', array('http-equiv' => 'X-XRDS-Location',
									 'content' => common_local_url('xrds', array('nickname' =>
																			   $user->nickname))));
		$profile = $user->getProfile();
		if ($profile->bio) {
			common_element('meta', array('name' => 'description',
										 'content' => $profile->bio));
		}

		if ($user->emailmicroid && $user->email && $profile->profileurl) {
			common_element('meta', array('name' => 'microid',
										 'content' => "mailto+http:sha1:" . sha1(sha1('mailto:' . $user->email) . sha1($profile->profileurl))));
		}
		if ($user->jabbermicroid && $user->jabber && $profile->profileurl) {
			common_element('meta', array('name' => 'microid',
										 'content' => "xmpp+http:sha1:" . sha1(sha1('xmpp:' . $user->jabber) . sha1($profile->profileurl))));
		}

		# See https://wiki.mozilla.org/Microsummaries

		common_element('link', array('rel' => 'microsummary',
									 'href' => common_local_url('microsummary',
																array('nickname' => $profile->nickname))));
	}

	function no_such_user() {
		$this->client_error(_('No such user.'), 404);
	}

	function show_profile($profile) {

		common_element_start('div', array('id' => 'profile', 'class' => 'vcard'));

		$this->show_personal($profile);

		$this->show_last_notice($profile);

		$cur = common_current_user();

		$this->show_subscriptions($profile);

		common_element_end('div');
	}

	function show_personal($profile) {

		$avatar = $profile->getAvatar(AVATAR_PROFILE_SIZE);
		common_element_start('div', array('id' => 'profile_avatar'));
		common_element('img', array('src' => ($avatar) ? common_avatar_display_url($avatar) : common_default_avatar(AVATAR_PROFILE_SIZE),
									'class' => 'avatar profile photo',
									'width' => AVATAR_PROFILE_SIZE,
									'height' => AVATAR_PROFILE_SIZE,
									'alt' => $profile->nickname));

        common_element_start('ul', array('id' => 'profile_actions'));

        common_element_start('li', array('id' => 'profile_subscribe'));
		$cur = common_current_user();
		if ($cur) {
			if ($cur->id != $profile->id) {
				if ($cur->isSubscribed($profile)) {
					common_unsubscribe_form($profile);
				} else {
					common_subscribe_form($profile);
				}
			}
		} else {
			$this->show_remote_subscribe_link($profile);
		}
        common_element_end('li');

		$user = User::staticGet('id', $profile->id);
		common_profile_new_message_nudge($cur, $user, $profile);

        if ($cur && $cur->id != $profile->id) {
            $blocked = $cur->hasBlocked($profile);
            common_element_start('li', array('id' => 'profile_block'));
            if ($blocked) {
                common_unblock_form($profile, array('action' => 'showstream',
                                                    'nickname' => $profile->nickname));
            } else {
                common_block_form($profile, array('action' => 'showstream',
                                                  'nickname' => $profile->nickname));
            }
            common_element_end('li');
        }

		common_element_end('ul');

		common_element_end('div');

		common_element_start('div', array('id' => 'profile_information'));

		if ($profile->fullname) {
			common_element('h1', array('class' => 'fn'), $profile->fullname . ' (' . $profile->nickname . ')');
		} else {
			common_element('h1', array('class' => 'fn nickname'), $profile->nickname);
		}

		if ($profile->location) {
			common_element('p', 'location', $profile->location);
		}
		if ($profile->bio) {
			common_element('p', 'description note', $profile->bio);
		}
		if ($profile->homepage) {
			common_element_start('p', 'website');
			common_element('a', array('href' => $profile->homepage,
									  'rel' => 'me', 'class' => 'url'),
						   $profile->homepage);
			common_element_end('p');
		}

		$this->show_statistics($profile);

		common_element_end('div');
	}

	function show_remote_subscribe_link($profile) {
		$url = common_local_url('remotesubscribe',
		                        array('nickname' => $profile->nickname));
		common_element('a', array('href' => $url,
								  'id' => 'remotesubscribe'),
					   _('Subscribe'));
	}

	function show_unsubscribe_form($profile) {
		common_element_start('form', array('id' => 'unsubscribe', 'method' => 'post',
										   'action' => common_local_url('unsubscribe')));
		common_hidden('token', common_session_token());
		common_element('input', array('id' => 'unsubscribeto',
									  'name' => 'unsubscribeto',
									  'type' => 'hidden',
									  'value' => $profile->nickname));
		common_element('input', array('type' => 'submit',
									  'class' => 'submit',
									  'value' => _('Unsubscribe')));
		common_element_end('form');
	}

	function show_subscriptions($profile) {
		global $config;

		$subs = DB_DataObject::factory('subscription');
		$subs->subscriber = $profile->id;
		$subs->whereAdd('subscribed != ' . $profile->id);

		$subs->orderBy('created DESC');

		# We ask for an extra one to know if we need to do another page

		$subs->limit(0, SUBSCRIPTIONS + 1);

		$subs_count = $subs->find();

		common_element_start('div', array('id' => 'subscriptions'));

		common_element('h2', NULL, _('Subscriptions'));

		if ($subs_count > 0) {

			common_element_start('ul', array('id' => 'subscriptions_avatars'));

			for ($i = 0; $i < min($subs_count, SUBSCRIPTIONS); $i++) {

				if (!$subs->fetch()) {
					common_debug('Weirdly, broke out of subscriptions loop early', __FILE__);
					break;
				}

				$other = Profile::staticGet($subs->subscribed);

				if (!$other) {
					common_log_db_error($subs, 'SELECT', __FILE__);
					continue;
				}

				common_element_start('li', 'vcard');
				common_element_start('a', array('title' => ($other->fullname) ?
												$other->fullname :
												$other->nickname,
												'href' => $other->profileurl,
												'rel' => 'contact',
 												'class' => 'subscription fn url'));
				$avatar = $other->getAvatar(AVATAR_MINI_SIZE);
				common_element('img', array('src' => (($avatar) ? common_avatar_display_url($avatar) :  common_default_avatar(AVATAR_MINI_SIZE)),
											'width' => AVATAR_MINI_SIZE,
											'height' => AVATAR_MINI_SIZE,
											'class' => 'avatar mini photo',
											'alt' =>  ($other->fullname) ?
											$other->fullname :
											$other->nickname));
				common_element_end('a');
				common_element_end('li');
			}

			common_element_end('ul');
		}

		if ($subs_count > SUBSCRIPTIONS) {
			common_element_start('p', array('id' => 'subscriptions_viewall'));

			common_element('a', array('href' => common_local_url('subscriptions',
																 array('nickname' => $profile->nickname)),
									  'class' => 'moresubscriptions'),
						   _('All subscriptions'));
			common_element_end('p');
		}

		common_element_end('div');
	}

	function show_statistics($profile) {

		// XXX: WORM cache this
		$subs = DB_DataObject::factory('subscription');
		$subs->subscriber = $profile->id;
		$subs_count = (int) $subs->count() - 1;

		$subbed = DB_DataObject::factory('subscription');
		$subbed->subscribed = $profile->id;
		$subbed_count = (int) $subbed->count() - 1;

		$notices = DB_DataObject::factory('notice');
		$notices->profile_id = $profile->id;
		$notice_count = (int) $notices->count();

		common_element_start('div', 'statistics');
		common_element('h2', 'statistics', _('Statistics'));

		# Other stats...?
		common_element_start('dl', 'statistics');
		common_element('dt', 'membersince', _('Member since'));
		common_element('dd', 'membersince', date('j M Y',
												 strtotime($profile->created)));

		common_element_start('dt', 'subscriptions');
		common_element('a', array('href' => common_local_url('subscriptions',
															 array('nickname' => $profile->nickname))),
					   _('Subscriptions'));
		common_element_end('dt');
		common_element('dd', 'subscriptions', (is_int($subs_count)) ? $subs_count : '0');
		common_element_start('dt', 'subscribers');
		common_element('a', array('href' => common_local_url('subscribers',
															 array('nickname' => $profile->nickname))),
					   _('Subscribers'));
		common_element_end('dt');
		common_element('dd', 'subscribers', (is_int($subbed_count)) ? $subbed_count : '0');
		common_element('dt', 'notices', _('Notices'));
		common_element('dd', 'notices', (is_int($notice_count)) ? $notice_count : '0');
		# XXX: link these to something
		common_element('dt', 'tags', _('Tags'));
		common_element_start('dd', 'tags');
		$tags = Profile_tag::getTags($profile->id, $profile->id);

		common_element_start('ul', 'tags xoxo');
		foreach ($tags as $tag) {
			common_element_start('li');
			common_element('a', array('rel' => 'bookmark tag',
									  'href' => common_local_url('peopletag',
																 array('tag' => $tag))),
						   $tag);
			common_element_end('li');
		}
		common_element_end('ul');
	    common_element_end('dd');

		common_element_end('dl');

		common_element_end('div');
	}

	function show_notices($user) {

		$page = ($this->arg('page')) ? ($this->arg('page')+0) : 1;

		$notice = $user->getNotices(($page-1)*NOTICES_PER_PAGE, NOTICES_PER_PAGE + 1);

        $pnl = new ProfileNoticeList($notice);
        $cnt = $pnl->show();

		common_pagination($page>1, $cnt>NOTICES_PER_PAGE, $page,
						  'showstream', array('nickname' => $user->nickname));
	}

	function show_last_notice($profile) {

		common_element('h2', NULL, _('Currently'));

		$notice = $profile->getCurrentNotice();

		if ($notice) {
			# FIXME: URL, image, video, audio
			common_element_start('p', array('class' => 'notice_current'));
			if ($notice->rendered) {
				common_raw($notice->rendered);
			} else {
				# XXX: may be some uncooked notices in the DB,
				# we cook them right now. This can probably disappear in future
				# versions (>> 0.4.x)
				common_raw(common_render_content($notice->content, $notice));
			}
			common_element_end('p');
		}
	}
}

# We don't show the author for a profile, since we already know who it is!

class ProfileNoticeList extends NoticeList {
    function newListItem($notice) {
        return new ProfileNoticeListItem($notice);
    }
}

class ProfileNoticeListItem extends NoticeListItem {
    function showAuthor() {
        return;
    }
}