<?php

# This program is in the public domain within the United States. Additionally,
# we waive copyright and related rights in the work worldwide through the CC0
# 1.0 Universal public domain dedication, which can be found at
# http://creativecommons.org/publicdomain/zero/1.0/


# This file writes the code for you (sql, php, html, email) to handle a form.

require_once(__DIR__.'/'.'template.php');
require_once(__DIR__.'/'.'http.php');
require_once(__DIR__.'/'.'tar.php');
require_once(__DIR__.'/'.'format.php');

# see wfpl/metaform/template.html for the html templates for these elements
$GLOBALS['types'] = array(
#    type                  input          format        sql     
	'varname' =>    array('textbox',     'varname',    'varchar(50) binary'),
	'name' =>       array('textbox',     'oneline',    'varchar(200) binary'),
	'textbox' =>    array('textbox',     'oneline',    'varchar(200) binary'),
	'int' =>        array('textbox',     'int',        'int'),
	'decimal' =>    array('textbox',     'decimal',    'decimal(12,2)'),
	'bigint' =>     array('textbox',     'int',        'varchar(100) binary'), # up to 100 digits, stored as a string
	'zip' =>        array('textbox',     'zip',        'varchar(20) binary'),
	'email' =>      array('email',       'email',      'varchar(100) binary'),
	'search' =>     array('search',      'oneline',    'varchar(200) binary'),
	'phone' =>      array('textbox',     'phone',      'varchar(32) binary'),
	'state' =>      array('states',      'oneline',    'varchar(2) binary'),
	'money' =>      array('textbox',     'money',      'varchar(32) binary'),
	'date' =>       array('date',        'mdy_to_ymd', 'char(10) binary'),
	'dollars' =>    array('textbox',     'dollars',    'varchar(32) binary'),
	'url' =>        array('textbox',     'url',        'varchar(200) binary'),
	'hidden' =>     array('hidden',      'unix',       'varchar(200) binary'),
	'password' =>   array('password',    'oneline',    'varchar(200) binary'),
	'textarea' =>   array('textarea',    'unix',       'text binary'),
	'html' =>       array('html',        'unix',       'mediumtext binary'),
	'pulldown' =>   array('pulldown',    'options',    'varchar(100) binary'),
	'radio' =>      array('radio',       'options',    'varchar(100) binary'),
	'checkbox' =>   array('checkbox',    'bool',       'int(1)'),
	'yesno' =>      array('checkbox',    'yesno',      'varchar(3) binary'),
	'delete' =>     array('checkbox',    'yesno',      'n/a'),
	'image' =>      array('image',       'oneline',    'varchar(120) binary'),
	'thumb' =>      array('image',       'oneline',    'varchar(240) binary'),
	'file' =>       array('file',        'oneline',    'varchar(100) binary'),
	'submit' =>     array('submit',      'n/a',        'n/a'),
	'{' =>          array('fieldset',    'n/a',        'n/a'),
	'}' =>          array('end_fieldset','n/a',        'n/a')
);

function list_available_types() {
	ksort($GLOBALS['types']);
	foreach($GLOBALS['types'] as $key => $value) {
		tem_set('type', $key);
		tem_show('types');
		tem_show('types_sep');
	}
}


function tem_set_globals(&$tem) {
	$vars = array(
		'file_name',
		'public_file_name',
		'table_name',
		'plural',
		'singular');
	foreach($vars as $var) {
		$tem->set($var, $GLOBALS[$var]);
	}

	$bools = array(
		'opt_email',
		'opt_db',
		'opt_listing',
		'opt_display',
		'opt_pass',
		'opt_public_form',
		'opt_public_display',
		'opt_public_something');
	foreach($bools as $bool) {
		if(isset($GLOBALS[$bool]) && $GLOBALS[$bool]) {
			$tem->set($bool);
		}
	}
}

function metaform_main() {
	if(isset($_REQUEST['singular'])) {
		$GLOBALS['file_name'] = format_varname(_REQUEST_cut('file_name'));
		$GLOBALS['table_name'] = format_varname(_REQUEST_cut('table_name'));
		$GLOBALS['plural'] = format_oneline(_REQUEST_cut('plural'));
		# backwards compatibility:
		if(isset($_REQUEST['form_name'])) {
			$GLOBALS['file_name'] = $GLOBALS['table_name'] = $GLOBALS['plural'] = format_varname(_REQUEST_cut('form_name'));
		}

		$GLOBALS['singular'] = format_oneline(_REQUEST_cut('singular'));
		$GLOBALS['opt_email'] = format_bool(_REQUEST_cut('opt_email'));
		$GLOBALS['opt_db'] = format_bool(_REQUEST_cut('opt_db'));
		$GLOBALS['opt_listing'] = format_bool(_REQUEST_cut('opt_listing'));
		$GLOBALS['opt_display'] = format_bool(_REQUEST_cut('opt_display'));
		$GLOBALS['opt_pass'] = format_bool(_REQUEST_cut('opt_pass'));
		$GLOBALS['opt_public_form'] = format_bool(_REQUEST_cut('opt_public_form'));
		$GLOBALS['opt_public_display'] = format_bool(_REQUEST_cut('opt_public_display'));

		$GLOBALS['public_file_name'] = $GLOBALS['file_name'];
		if($GLOBALS['opt_public_form'] || $GLOBALS['opt_public_display']) {
			$GLOBALS['opt_public_something'] = 1;
			$GLOBALS['file_name'] = $GLOBALS['file_name'] . _admin;
		} else {
			$GLOBALS['opt_public_something'] = 0;
		}

		tem_init();
		tem_set_globals($GLOBALS['wfpl_template']);
	}

	if(isset($_REQUEST['fields'])) {
		if(isset($_REQUEST['view_sql'])) {
			view_sql();
			exit();
		} elseif(isset($_REQUEST['view_php'])) {
			view_php();
			exit();
		} elseif(isset($_REQUEST['view_html'])) {
			view_html();
			exit();
		} elseif(isset($_REQUEST['view_email'])) {
			view_email();
			exit();
		} elseif(isset($_REQUEST['download_tar'])) {
			download_tar();
			exit();
		} elseif(isset($_REQUEST['preview'])) {
			preview();
			exit();
		} elseif(isset($_REQUEST['edit'])) {
			tem_set('fields', $_REQUEST['fields']);
			# fall through
		} else {
			die("Sorry... couldn't tell which button you pressed");
		}
	}


	set_form_action();
	tem_load(__DIR__.'/'.'metaform/main.html');
	list_available_types();
	tem_output();
	exit(); # in case we're being called by wfpl_main or something
}


function field_input($type)  { return $GLOBALS['types'][$type][0]; }
function field_format($type) { return $GLOBALS['types'][$type][1]; }
function field_sql($type)    { return $GLOBALS['types'][$type][2]; }

function get_fields() {
	# no sense in doing all this so many times
	if(isset($GLOBALS['gotten_fields'])) {
		return $GLOBALS['gotten_fields'];
	}

	$fields_str = unix_newlines($_REQUEST['fields']);
	$GLOBALS['gotten_fields'] = array();
	$fields_str = rtrim($fields_str);
	$fields = explode("\n", $fields_str);
	foreach($fields as $field) {
		$first_char = substr($field, 0, 1);
		$field = trim($field);
		if ($first_char === ' ' || $first_char === "\t") {
			$i = count($GLOBALS['gotten_fields']);
			if($i > 0) {
				$i -= 1;
				if (!$GLOBALS['gotten_fields'][$i]['options']) {
					$GLOBALS['gotten_fields'][$i]['options'] = array();
				}
				$GLOBALS['gotten_fields'][$i]['options'][] = $field;
				continue;
			}
		}
		if(substr($field, -1) == '{') {
			$caption = trim(substr($field, 0, -1));
			$name = format_varname($caption);
			$type = '{';
			$options = null;
		} else {
			$options = null;
			$type = null;
			$div = strpos($field, ' ');
			if ($div === false) {
				$div = strpos($field, "\t");
			}
			if ($div === false) {
				if (isset($GLOBALS['types'][$field])) {
					# if just one word, and it's a type, use it as name/caption and type
					$type = $field;
				}
			} else {
				$first_word = trim(substr($field, 0, $div));
				if (isset($GLOBALS['types'][$first_word])) {
					# if the first word (of multiple) is a type, remove it from the name/caption
					$type = $first_word;
					$field = trim(substr($field, $div + 1));
				}
			}
			# see if there's an explicit name/caption splitter
			$div = strpos($field, '|');
			if ($div !== false) {
				$name = trim(substr($field, 0, $div));
				$caption = trim(substr($field, $div + 1));
				if (isset($GLOBALS['types'][$name])) {
					$type = $name;
				} elseif (isset($GLOBALS['types'][strtolower($caption)])) {
					$type = strtolower($caption);
				}
			} else {
				$name = format_varname($field);
				$caption = format_caption($field);
			}

			if ($type === null) {
				$type = 'textbox';
			}
		}
		$input = field_input($type);
		$format = field_format($type);
		$sql = field_sql($type);
		$GLOBALS['gotten_fields'][] = array(
			'caption' => $caption,
			'name' => $name,
			'type' => $type,
			'input' => $input,
			'format' => $format,
			'sql' => $sql,
			'options' => $options
		);
	}

	return $GLOBALS['gotten_fields'];
}

# this one, that you're using to create forms
function set_form_action() {
	$action = preg_replace('|.*/|', '', $_SERVER['REQUEST_URI']);
	if($action == '') $action = './';
	tem_set('form_action', $action);
}

# perfect HTTP headers for viewing created files
function view_headers() {
	header('Content-type: text/plain');
}
	

function make_sql() {
	$tem = new tem();
	$tem->load(__DIR__.'/'.'metaform/template.sql');
	tem_set_globals($tem);
	$fields = get_fields();
	foreach($fields as $field) {
		if($field['sql'] != 'n/a') {
			$tem->set('name', $field['name']);
			$tem->set('type', $field['sql']);
			if(substr($field['sql'], 0, 3) == 'int' || substr($field['sql'], 0, 7) == 'decimal') {
				$tem->set('default', '0');
			} elseif($field['format'] == 'yesno') {
				$tem->set('default', '"No"');
			} else {
				$tem->set('default', '""');
			}
			$tem->show('column');
		}
	}
	view_headers();
	return $tem->run();
}

function view_sql() {
	view_headers();
	echo make_sql();
}

# always_field is a form field that always submits (unlike say, checkboxes). It's used to detect if the form has submitted or not.
function find_always_field(&$fields) {
	foreach($fields as $field) {
		if($field['input'] != 'submit' && $field['input'] != 'image' && $field['input'] != 'file' && $field['input'] != 'checkbox' && $field['input'] != 'radio' && $field['type'] != '{' && $field['type'] != '}') {
			return $field['name'];
		}
	}

	return 'FIXME';
}
	
	
# pass false if you want to exclude the <head> and <body> tag etc.
function make_html($whole_file = true) {
	$has_html_editors = false;
	$tem = new tem();
	$tem->load(__DIR__.'/'.'metaform/template.html');
	tem_set_globals($tem);
	$fields = get_fields();
	$tem->set('always_field', find_always_field($fields));
	$hidden_fields = array();
	$visible_fields = array();
	$display_fields = array();
	$listing_headers = array();
	$listing_fields = array();
	foreach($fields as $field) {
		if($field['input'] == 'hidden') {
			$hidden_fields[] = array('name' => $field['name']);
		} else {
			$visible_fields[] = array(
				$field['input'] => array(
					'name' => $field['name'],
					'caption' => $field['caption']
				)
			);
			if($field['type'] == 'radio') {
				$i = 0;
				$opts = array();
				foreach ($field['options'] as $row) {
					if (is_array($row)) {
						$cap = $row[1];
					} else {
						$cap = $row;
					}
					$opts[] = array('i' => $i, 'option_caption' => $cap);
					$i += 1;
				}
				$visible_fields[count($visible_fields) - 1]['options'] = $opts;
			}
		}

		if($field['input'] == 'image' || $field['input'] == 'file') {
			$tem->set('uploads');
			$tem->set('enctype_attr', '" enctype="multipart/form-data');
		} elseif($field['input'] == 'html') {
			$has_html_editors = true;
			$tem->set('html_field_name', $field['name']);
			$tem->set('replace_textarea');
		}

		switch($field['input']) {
			case 'image':
			case 'checkbox':
			case 'date':
			case 'textarea':
			case 'html':
				$display_type = $field['input'];
			break;
			default:
				$display_type = 'short';
		}
		if($field['format'] != 'n/a') {
			$display_fields[] = array($display_type => array(
				'name' => $field['name'], 'caption' => $field['caption']));
		}

		if(show_in_listing($field['type'], $field['input'], $field['format'], $field['sql'])) {
			$listing_headers[] = array(
				'caption' => $field['caption'],
				'name' => $field['name']
			);
			$listing_field = array(
				'name' => $field['name']
			);
			if($field['format'] == 'bool' || $field['format'] == 'yesno') {
				$listing_field['enc'] = 'yesno';
			} elseif($field['input'] == 'date') {
				$listing_field['enc'] = 'mmddyyyy';
			} elseif($field['type'] == 'thumb') {
				$listing_field['thumb'] = true;
			} else {
				$listing_field['enc'] = 'html';
			}
			$listing_fields[] = $listing_field;
		}
	}

	# Submit/Send button
	if($GLOBALS['opt_email'] == 'Yes' && !$GLOBALS['opt_db']) {
		$visible_fields[] = array('submit' => array(
			'name' => 'send',
			'caption' => 'Send'));
	} else {
		$visible_fields[] = array('submit' => array(
			'name' => 'save',
			'caption' => 'Save'));
	}

	$form_fields = array();
	$form_fields['visible_fields'] = $visible_fields;
	if($hidden_fields) {
		$form_fields['hidden_fields'] = $hidden_fields;
	}
	$tem->set('form', $form_fields);

	# opt_display and opt_listing control whether these are actually displayed
	$tem->set('display_fields', $display_fields);
	$tem->set('listing_headers', $listing_headers);
	$tem->set('listing_fields', $listing_fields);


	if($has_html_editors) {
		$tem->set('html_editor_headers');
	}

	if($whole_file) {
		return $tem->run();
	} else {
		$tem2 = new tem();
		$tem2->load_str('<!--~form~-->');
		$tem2->merge($tem);
		return $tem2->run();
	}
}

function view_html() {
	view_headers();
	echo make_html();
}

function show_in_listing($type, $input, $format, $sql) {
	switch($input) {
		case 'submit':
		case 'hidden':
		case 'password':
		case 'textarea':
		case 'html':
		case 'fieldset':
		case 'end_fieldset':
			return false;
	}
	if($type == 'image') {
		return false;
	}

	return true;
}

function pulldown_options_array($options) {
	if($options) {
		$pulldown_options = array();
		foreach($options as $option) {
			$option = preg_replace("/['\\\\]/", '\\\\$0', $option);
			$pulldown_options[] = "'$option'";
		}
		$pulldown_options = 'array(' . join(', ', $pulldown_options) . ')';
	} else {
		$pulldown_options = "array(array('op1', 'Option One'), array('op2', 'Option Two'), 'n/a')";
	}

	return $pulldown_options;
}

function make_php() {
	$has_html_editors = false;
	$tem = new tem();
	$tem->load(__DIR__.'/'.'metaform/template.php');
	tem_set_globals($tem);
	$fields = get_fields();
	$db_fields = '';
	$always_field = find_always_field($fields);
	$image_included_yet = false;
	$name_to_caption = array();
	$has_uploads = false;
	foreach($fields as $field) {
		$name_to_caption[] = array('name' => $field['name'], 'caption' => $field['caption']);
		if($field['input'] != 'submit') {
			$tem->set('format', $field['format']);
			$tem->set('name', $field['name']);
			$tem->set('db_field', ''); # we don't want to use the value from last time
			if($field['sql'] != 'n/a') {
				if($db_fields != '') $db_fields .= ',';
				$db_fields .= $field['name'];
			}
			if($field['input'] == 'image') {
				if($field['type'] == 'thumb') {
					$tem->show('thumb_settings');
					$tem->show('thumb_upload_params');
					$tem->show('thumb_w_h');
				}
				$tem->show('image_settings');
				$tem->show('image_upload');
				$has_uploads = true;
			} else if($field['input'] == 'file') {
				$tem->show('file_settings');
				$tem->show('file_upload');
				$has_uploads = true;
			} else {
				if($field['input'] == 'html') {
					$has_html_editors = true;
				} elseif($field['input'] == 'pulldown' || $field['input'] == 'radio') {
					$pulldown_options = pulldown_options_array($field['options']);
					$tem->set('pulldown_options', $pulldown_options);
					$tem->set('has_pulldowns');
					$tem->show('pulldowns');
					$tem->show('pulldown_format_extra');
				}
				if($field['format'] != 'n/a') {
					$tem->show('formats');
				}
			}
		}

		if($GLOBALS['opt_listing']) {
			if(show_in_listing($field['type'], $field['input'], $field['format'], $field['sql'])) {
				$tem->show('listing_fields_1');
				$tem->show('listing_fields_2');
			}
		}
	}

	$tem->set('name_to_caption', $name_to_caption);

	if($has_uploads) {
		$tem->show('uploads_include');
		$tem->show('upload_max');
		$tem->show('upload_settings');
		$image_included_yet = true;
	}

	if($has_html_editors) {
		$tem->show('show_extra_headers');
	}

	$tem->set('always_field', $always_field);
	$tem->set('db_fields', $db_fields);
	$tem->set('metaform_url', edit_url());
	if($GLOBALS['opt_email']) {
		$this_domain = $_SERVER['HTTP_HOST'];
		if(substr($this_domain, -2) == '.l') {
			$this_domain = substr($this_domain, 0, -1) . 'com';
		}
		$tem->set('this_domain', $this_domain);
	}
	return $tem->run();
}

# make a URL for the edit page with all the fields filled in
function edit_url() {
	$url = this_url();
	$url = preg_replace('|view_php=[^&]*|', 'edit=yes', $url);
	$url = preg_replace('|download_tar=[^&]*|', 'edit=yes', $url);
	$url = preg_replace('|/[a-z0-9_.]*\?|', '/?', $url);
	return $url;
}

function view_php() {
	view_headers();
	echo make_php();
}

function make_email() {
	$tem = new tem();
	$tem->load(__DIR__.'/'.'metaform/template.email.txt');
	tem_set_globals($tem);
	$fields = get_fields();
	foreach($fields as $field) {
		$tem->set('name', $field['name']);
		$tem->set('caption', $field['caption']);
		if($field['type'] == 'textarea') {
			$tem->show('multi_line');
		} elseif($field['type'] == 'checkbox') {
			$tem->show('checkbox');
		} else {
			$tem->show('normal');
		}
		$tem->show('fields');
	}
	return $tem->run();
}

function make_htaccess() {
	$tem = new tem();
	$tem->set('form', $GLOBALS['file_name']);
	return $tem->run(__DIR__.'/'.'metaform/htaccess');
}

function view_email() {
	view_headers();
	echo make_email();
}

function preview() {
	tem_load(__DIR__.'/'.'metaform/preview.html');
	tem_set_globals($GLOBALS['wfpl_template']);
	tem_set('fields', $_REQUEST['fields']);
	$preview_tem = new tem();
	$preview_tem->load_str(make_html(false));
	if($GLOBALS['opt_db']) {
		$preview_tem->show('new_msg');
	}
	$fields = get_fields();
	foreach($fields as $field) {
		if($field['type'] == 'pulldown' || $field['type'] == 'radio') {
			pulldown($field['name'], eval('return ' . pulldown_options_array($field['options']) . ';'));
		}
	}
	$preview = $preview_tem->run();
	unset($preview_tem);
	$preview = preg_replace('|type="submit"|', 'type="submit" disabled="disabled"', $preview);
	tem_set('preview', $preview);
	tem_show('hiddens');
	set_form_action();
	tem_output();
}

function download_tar() {
	$admin_name = $GLOBALS['file_name'];
	$nice_name = $GLOBALS['public_file_name'];
	$files = array(
		"README" => "These files are meant to work with wfpl.\n\nSee: http://sametwice.com/wfpl\n",
		".htaccess" => make_htaccess(),
		"config.php" => "<?php\n\n# put your site-wide configuration here\n",
		"wfpl_main.php" => read_whole_file(__DIR__.'/'.'metaform/wfpl_main.php'),
		"styl.styl" => read_whole_file(__DIR__.'/'.'metaform/styl.styl'),
		"template.html" => read_whole_file(__DIR__.'/'.'metaform/site-template.html'),
		"$admin_name.html" => make_html(),
		"$admin_name.php" => make_php());
	if($GLOBALS['opt_public_something']) {
		$files["$nice_name.html ->"] = "$admin_name.html";
		$files["$nice_name.php ->"] = "$admin_name.php";
	}
	if($GLOBALS['opt_db']) {
		$files["$nice_name.sql"] = make_sql();
	}
	if($GLOBALS['opt_email']) {
		$files["$nice_name.email.txt"] = make_email();
	}
	make_tar($nice_name, $files);
}