<?php

# This form requires wfpl. See: http://sametwice.com/wfpl

define('ADMIN_PAGES_DB_FIELDS', 'title,filename,navbar,nav_title,content,description,keywords');


require_once(DOCROOT . 'inc/wfpl/format.php');
require_once(DOCROOT . 'inc/wfpl/email.php');

function format_cms_filename($str) {
	$str = format_filename($str);
	$str = str_replace('.', '_', $str);
	return $str;
}


function admin_pages_get_fields() {
	$data = array();

	$data['title'] = format_oneline(_REQUEST_cut('title'));
	$data['filename'] = format_cms_filename(_REQUEST_cut('filename'));
	$data['navbar'] = format_options(_REQUEST_cut('navbar'), 'navbar');
	$data['nav_title'] = format_oneline(_REQUEST_cut('nav_title'));
	$data['content'] = format_unix(_REQUEST_cut('content'));
	$data['description'] = format_unix(_REQUEST_cut('description'));
	$data['keywords'] = format_unix(_REQUEST_cut('keywords'));

	return $data;
}


function admin_pages_main() {
	session_auth_must('edit_page');

	$id = _REQUEST_cut('edit_id');
	if($id) {
		return admin_pages_main_form($id);
	}

	$id = _REQUEST_cut('admin_pages_delete_id');
	if($id) {
		return admin_pages_main_delete($id);
	}

	if(_REQUEST_cut('new')) {
		return admin_pages_main_form();
	}

	if(_REQUEST_cut('list')) {
		return admin_pages_main_listing();
	}

	$id = _REQUEST_cut('id');
	if($id) {
		return admin_pages_main_display($id);
	}

	if(isset($_POST['title'])) {
		return admin_pages_main_form();
	}

	# default action:
	return admin_pages_main_listing();
}

# admin-only access to view pages with no filename
function admin_pages_main_display($id) {
	cms_display_content($GLOBALS['wfpl_main_template'], 'where id=%i', $id);
}

function admin_pages_main_delete($id) {
	db_delete('cms_pages', 'where id=%i', $id);
	message('Page deleted.');
	return './admin_pages';
}

function admin_pages_get_images() {
	$images = db_get_assocs('cms_images', 'image,name,caption,sizes', 'order by name, caption, image');
	$id = 0;
	foreach($images as &$image) {
		$image['id'] = '' . $id;
		$id += 1;
	}
	return $images;
}

function admin_pages_main_listing() {
	$listing_rows = db_get_assocs('cms_pages', 'id,filename,coalesce(nullif(nav_title,\'\'), title) as title', 'order by concat(nav_title,title)');
	tem_set('listings', $listing_rows);
}

function admin_pages_main_form($id = false) {
	if($id) {
		tem_set('id', $id);
	}

	tem_set('$basename', 'admin_pages');

	$navbar_options = array(array('ignored', 'Not at all'), array('0', 'First'));
	$rows = db_get_rows('cms_pages', 'id,coalesce(nullif(nav_title,\'\'), title) as title,navbar', 'where navbar != 0 order by navbar');
	if($rows) for($i = 0; $i < count($rows); ++$i) {
		list($other_id, $other_title, $other_ord) = $rows[$i];
		if($other_id != $id) { # don't display ourselves
			$navbar_options[] = array($i + 1, "After \"$other_title\"");
		}
	}
	pulldown('navbar', $navbar_options, PULLDOWN_2D);

	if(isset($_POST['title'])) {
		$data = admin_pages_get_fields();

		# We'll save anything (no required fields)

		$data['navbar'] = db_reposition('cms_pages', $id, $data['navbar'], 'navbar', 'page');

		if($data['navbar'] && $data['filename'] == '') {
			message('This page was removed from the navigation column because it does not have a filename. (Pages without filenames are visible only to admins.)');
			$data['navbar'] = 0;
		}

		if($id) {
			db_update_assoc('cms_pages', $data, 'where id=%i', $id);
			$id = $id;
			message('Page updated.');
		} else {
			db_insert_assoc('cms_pages', $data);
			$id = db_auto_id();
			message('Page saved.');
		}
		if($data['filename']) {
			return "./$data[filename]";
		} else {
			return "./admin_pages?id=$id";
		}
	} elseif($id) {
		# we've recieved an edit id, but no data. So we grab the values to be edited from the database
		$data = db_get_assoc('cms_pages', ADMIN_PAGES_DB_FIELDS, 'where id=%i', $id);
		if($data['navbar']) {
			$data['navbar'] = db_count('cms_pages', 'where navbar!=0 && navbar<%i', $data['navbar']);
		} else {
			$data['navbar'] = 'ignored';
		}
	} else {
		# form not submitted, set default values:
		$data = array('filename' => format_cms_filename($_REQUEST['new_filename']));
	}

	tem_set('wfpl_images', admin_pages_get_images());
	tem_set('form', $data);
	tem_set('$head'); # wysiwyg init goes in <head>
}