Working JS Template Engine with a basic functionality

app/Classes/Template.php

@@ -3,12 +3,16 @@
 namespace App\Classes;
 
 use Illuminate\Support\Arr;
+use Illuminate\Support\Collection;
+use Illuminate\Support\Facades\Log;
 use Illuminate\Support\Facades\Storage;
 use Illuminate\Support\Str;
 
 class Template
 {
-	private string $file;
+	private const LOGKEY = 'T--';
+
+	private(set) string $file;
 	private array $template;
 	private(set) bool $invalid = FALSE;
 	private(set) string $reason = '';
@@ -48,4 +52,137 @@ class Template
 	{
 		return array_key_exists($key,$this->template);
 	}
+
+	/**
+	 * Return the onchange JavaScript for attribute
+	 *
+	 * @param string $attribute
+	 * @return Collection
+	 */
+	public function onChange(string $attribute): Collection
+	{
+		$attr = collect($this->template['attributes'])
+			->filter(fn($item,$key)=>! strcasecmp($key,$attribute))
+			->pop();
+
+		if (! $attr)
+			return collect();
+
+		$result = collect();
+
+		foreach (Arr::get($attr,'onchange',[]) as $item) {
+			list($command,$args) = preg_split('/^=([a-zA-Z]+)\((.+)\)$/',$item,-1,PREG_SPLIT_DELIM_CAPTURE|PREG_SPLIT_NO_EMPTY);
+
+			switch ($command) {
+				case 'autoFill':
+					$result->push($this->autofill($args));
+					break;
+			}
+		}
+
+		return $result;
+	}
+
+	/**
+	 * autoFill - javascript to have one attribute fill the value of another
+	 *
+	 * args: is a literal string, with two parts, delimited by a semi-colon ;
+	 *	+ The first part is the attribute that will be populated
+	 *	+ The second part may contain many fields like %attr|start-end/flags|additionalcontrolchar%
+	 *	  to substitute values read from other fields.
+	 *	  + |start-end is optional, but must be present if the k flag is used
+	 *	  + /flags is optional
+	 *	  + |additionalcontrolchar is optional, and specific to a flag being used
+	 *
+	 *	+ flags may be:
+	 *		T:(?)	Read display text from selection item (drop-down list), otherwise, read the value of the field
+	 *			For fields that aren't selection items, /T shouldn't be used, and the field value will always be read
+	 *		k:(?)	Tokenize:
+	 *			If the "k" flag is not given:
+	 *			+ A |start-end instruction will perform a sub-string operation upon the value of the attr, passing
+	 *				character positions start-end through
+	 *				+ start can be 0 for first character, or any other integer
+	 *				+ end can be 0 for last character, or any other integer for a specific position
+	 *			If the "k" flag is given:
+	 *				+ The string read will be split into fields, using : as a delimiter
+	 *				+ start indicates which field number to pass through
+	 *
+	 *		    If additionalcontrolchar is given, it will be used as delimiter (e.g. this allows for splitting
+	 *			e-mail addresses into domain and domain-local part)
+	 *		l:	Make the result lower case
+	 *		U:	Make the result upper case
+	 *		A:(?)	Remap special characters to their corresponding ASCII value
+	 *
+	 * @note Attributes rendered on the page are lowercase, eg: <attribute id="gidnumber"> for gidNumber
+	 * @note JavaScript generated here depends on js/template.js
+	 * (?) = to test
+	 */
+	private function autofill(string $arg): string
+	{
+		if (! preg_match('/;/',$arg)) {
+			Log::alert(sprintf('%s:Invalid argument given to autofill [%s]',self::LOGKEY,$arg));
+			return '';
+		}
+
+		$result = '';
+
+		// $attr has our attribute to update, $string is the format to use when updating it
+		list($attr,$string) = preg_split('(([^,]+);(.*))',$arg,-1,PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
+		$output = $string;
+		//$result .= sprintf("\n// %s\n",$arg);
+
+		$m = [];
+		// MATCH : 0 = highlevel match, 1 = attr, 2 = subst, 3 = mod, 4 = delimiter
+		preg_match_all('/%(\w+)(?:\|([0-9]*-[0-9])+)?(?:\/([klTUA]+))?(?:\|(.)?)?%/U',$string,$m);
+
+		foreach ($m[0] as $index => $null) {
+			$match_attr = strtolower($m[1][$index]);
+			$match_subst = $m[2][$index];
+			$match_mod = $m[3][$index];
+			$match_delim = $m[4][$index];
+
+			$substrarray = [];
+
+			$result .= sprintf("var %s;\n",$match_attr);
+
+			if (str_contains($match_mod,'k')) {
+				preg_match_all('/([0-9]+)/',trim($match_subst),$substrarray);
+
+				$delimiter = ($match_delim === '') ? ' ' : preg_quote($match_delim);
+				$result .= sprintf("   %s = %s.split('%s')[%s];\n",$match_attr,$match_attr,$delimiter,$substrarray[1][0] ?? '0');
+
+			} else {
+				// Work out the start and end chars needed from this value if we have a range specifier
+				preg_match_all('/([0-9]*)-([0-9]+)/',$match_subst,$substrarray);
+				if ((isset($substrarray[1][0]) && $substrarray[1][0]) || (isset($substrarray[2][0]) && $substrarray[2][0])) {
+					$result .= sprintf("%s = get_attribute('%s',%d,%s);\n",
+						$match_attr,$match_attr,
+						$substrarray[1][0] ?? '0',
+						$substrarray[2][0] ?: sprintf('%s.length',$match_attr));
+				} else {
+					$result .= sprintf("%s = get_attribute('%s');\n",$match_attr,$match_attr);
+				}
+			}
+
+			if (str_contains($match_mod,'l'))
+				$result .= sprintf("%s = %s.toLowerCase();\n",$match_attr,$match_attr);
+
+			if (str_contains($match_mod,'U'))
+				$result .= sprintf("%s = %s.toUpperCase();\n",$match_attr,$match_attr);
+
+			if (str_contains($match_mod,'A'))
+				$result .= sprintf("%s = toAscii(%s);\n",$match_attr,$match_attr);
+
+			// For debugging
+			//$result .= sprintf("console.log('%s will return:'+%s);\n",$match_attr,$match_attr);
+
+			// Reformat out output into JS variables
+			$output = preg_replace('/'.preg_quote($m[0][$index],'/').'/','\'+'.$match_attr.'+\'',$output);
+		}
+
+		$result .= sprintf("put_attribute('%s','%s');\n",strtolower($attr),$output);
+		$result .= "\n";
+
+		return $result;
+	}
 }

app/Http/Controllers/HomeController.php

@@ -46,18 +46,12 @@ class HomeController extends Controller
 		$o = new Entry;
 		$o->setRDNBase($key['dn']);
 
-		foreach (collect(old())->except(['_token','key','step','rdn','rdn_value','userpassword_hash']) as $old => $value)
+		foreach (collect(old())->except(['_token','key','step','rdn','rdn_value','_template','userpassword_hash']) as $old => $value)
 			$o->{$old} = array_filter($value);
 
-		if (count($x=collect(old('objectclass',$request->validated('objectclass')))->dot()->filter())) {
+		if (old('_template',$request->validated('template'))) {
-			$o->objectclass = Arr::undot($x);
+			$template = $o->template(old('_template',$request->validated('template')));
 
-			// Also add in our required attributes
-			foreach ($o->getAvailableAttributes()->filter(fn($item)=>$item->is_must) as $ao)
-				$o->{$ao->name} = [Entry::TAG_NOTAG=>''];
-
-		} elseif ($request->validated('template')) {
-			$template = $o->template($request->validated('template'));
 			$o->objectclass = [Entry::TAG_NOTAG=>$template->objectclasses->toArray()];
 
 			foreach ($o->getAvailableAttributes()
@@ -66,6 +60,13 @@ class HomeController extends Controller
 			{
 				$o->{$ao->name} = [Entry::TAG_NOTAG=>''];
 			}
+
+		} elseif (count($x=collect(old('objectclass',$request->validated('objectclass')))->dot()->filter())) {
+			$o->objectclass = Arr::undot($x);
+
+			// Also add in our required attributes
+			foreach ($o->getAvailableAttributes()->filter(fn($item)=>$item->is_must) as $ao)
+				$o->{$ao->name} = [Entry::TAG_NOTAG=>''];
 		}
 
 		$step = $request->step ? $request->step+1 : old('step');
@@ -104,6 +105,7 @@ class HomeController extends Controller
 		return $view
 			->with('o',$o)
 			->with('langtag',Entry::TAG_NOTAG)
+			->with('template',NULL)
 			->with('updated',FALSE);
 	}
 
@@ -116,7 +118,7 @@ class HomeController extends Controller
 		$o = new Entry;
 		$o->setDn($dn);
 
-		foreach ($request->except(['_token','key','step','rdn','rdn_value','userpassword_hash']) as $key => $value)
+		foreach ($request->except(['_token','key','step','rdn','rdn_value','_template','userpassword_hash']) as $key => $value)
 			$o->{$key} = array_filter($value);
 
 		try {
@@ -368,6 +370,7 @@ class HomeController extends Controller
 	 * @param Request $request
 	 * @param Collection|null $old
 	 * @return \Illuminate\View\View
+	 * @throws InvalidUsage
 	 */
 	public function frame(Request $request,?Collection $old=NULL): \Illuminate\View\View
 	{

public/js/template.js

@@ -0,0 +1,23 @@
+/* JavaScript template engine abstraction layer */
+/* Currently implemented for jquery */
+
+// Get a value from an attribute
+function get_attribute(attribute,start,end) {
+	var val = $('#'+attribute).find('input').val();
+
+	return ((start !== undefined) && (end !== undefined))
+		? val.substring(start,end)
+		: val;
+}
+
+// Put a value to an attribute
+function put_attribute(attribute,result) {
+	// Get the value, if the value hasnt changed, then we dont need to do anything
+	if (get_attribute(attribute) === result)
+		return;
+
+	$('#'+attribute)
+		.find('input')
+		.val(result)
+		.trigger('change');
+}

public/js/toAscii.js

@@ -0,0 +1,81 @@
+//
+// Purpose of this file is to remap characters as ASCII characters
+//
+//
+
+var to_ascii_array = new Array();
+to_ascii_array['à'] = 'a';
+to_ascii_array['á'] = 'a';
+to_ascii_array['â'] = 'a';
+to_ascii_array['À'] = 'a';
+to_ascii_array['ã'] = 'a';
+to_ascii_array['Ã¥'] = 'a';
+to_ascii_array['À'] = 'A';
+to_ascii_array['Á'] = 'A';
+to_ascii_array['Ä'] = 'A';
+to_ascii_array['Â'] = 'A';
+to_ascii_array['Ã'] = 'A';
+to_ascii_array['Å'] = 'A';
+to_ascii_array['é'] = 'e';
+to_ascii_array['Ú'] = 'e';
+to_ascii_array['ë'] = 'e';
+to_ascii_array['ê'] = 'e';
+to_ascii_array['€'] = 'E';
+to_ascii_array['ï'] = 'i';
+to_ascii_array['î'] = 'i';
+to_ascii_array['ì'] = 'i';
+to_ascii_array['í'] = 'i';
+to_ascii_array['Ï'] = 'I';
+to_ascii_array['Î'] = 'I';
+to_ascii_array['Ì'] = 'I';
+to_ascii_array['Í'] = 'I';
+to_ascii_array['ò'] = 'o';
+to_ascii_array['ó'] = 'o';
+to_ascii_array['ÃŽ'] = 'o';
+to_ascii_array['õ'] = 'o';
+to_ascii_array['ö'] = 'o';
+to_ascii_array['Þ'] = 'o';
+to_ascii_array['Ò'] = 'O';
+to_ascii_array['Ó'] = 'O';
+to_ascii_array['Ô'] = 'O';
+to_ascii_array['Õ'] = 'O';
+to_ascii_array['Ö'] = 'O';
+to_ascii_array['Ø'] = 'O';
+to_ascii_array['ù'] = 'u';
+to_ascii_array['ú'] = 'u';
+to_ascii_array['Ì'] = 'u';
+to_ascii_array['û'] = 'u';
+to_ascii_array['Ù'] = 'U';
+to_ascii_array['Ú'] = 'U';
+to_ascii_array['Ü'] = 'U';
+to_ascii_array['Û'] = 'U';
+to_ascii_array['Ê'] = 'ae';
+to_ascii_array['Æ'] = 'AE';
+to_ascii_array['Ü'] = 'y';
+to_ascii_array['ÿ'] = 'y';
+to_ascii_array['ß'] = 'SS';
+to_ascii_array['Ç'] = 'C';
+to_ascii_array['ç'] = 'c';
+to_ascii_array['Ñ'] = 'N';
+to_ascii_array['ñ'] = 'n';
+to_ascii_array['¢'] = 'c';
+to_ascii_array['©'] = '(C)';
+to_ascii_array['®'] = '(R)';
+to_ascii_array['«'] = '<<';
+to_ascii_array['»'] = '>>';
+
+function toAscii(text) {
+    //var text = field.value;
+    var output = '';
+
+    for (position=0; position < text.length; position++) {
+        var tmp = text.substring(position,position+1);
+
+        if (to_ascii_array[tmp] !== undefined)
+            tmp = to_ascii_array[tmp];
+
+        output += tmp;
+    }
+
+    return output;
+}

resources/themes/architect/views/layouts/partials/scripts.blade.php

@@ -17,4 +17,9 @@
 @if(file_exists('js/custom.js'))
 	<!-- Any Custom JS -->
 	<script src="{{ asset('js/custom.js') }}"></script>
+@endif
+
+@if(file_exists('js/template.js'))
+	<!-- Template Engine JS -->
+	<script src="{{ asset('js/template.js') }}"></script>
 @endif

resources/views/components/attribute-type.blade.php

@@ -7,6 +7,10 @@
 				<span class="d-flex justify-content-between">
 					<span style="width: 20em;">
 						<strong class="align-middle"><abbr title="{{ $o->description }}">{{ $o->name }}</abbr></strong>
+						@if($new && $template?->onChange($o->name)->count())
+							<sup data-bs-toggle="tooltip" title="@lang('Value calculated by template')"><i class="fas fa-wand-magic-sparkles"></i></sup>
+						@endif
+
 						@if($o->hints->count())
 							<sup>
 								[

resources/views/components/attribute.blade.php

@@ -33,4 +33,16 @@
 			@endif
 		</div>
 	</div>
-</x-attribute.layout>
+</x-attribute.layout>
+
+@if($new && ($x=$template?->onChange($o->name))?->count())
+	@section('page-scripts')
+		<!-- START: ONCHANGE PROCESSING {{ $o->name }} -->
+		<script type="text/javascript">
+			$('#{{ $o->name_lc }}').on('change',function() {
+				{!! $x->join('') !!}
+			});
+		</script>
+		<!-- END: ONCHANGE PROCESSING {{ $o->name }} -->
+	@append
+@endif

resources/views/frames/create.blade.php

@@ -63,10 +63,11 @@
 								@break
 
 							@case(2)
-								<x-attribute-type :o="$o->getObject('rdn')" :edit="TRUE" :new="FALSE" :updated="FALSE"/>
+								<input type="hidden" name="_template" value="{{ $template?->file }}">
+								<x-attribute-type :o="$o->getObject('rdn')" :edit="TRUE" :new="TRUE" :template="$template" :updated="FALSE"/>
 
 								@foreach($o->getVisibleAttributes() as $ao)
-									<x-attribute-type :o="$ao" :edit="TRUE" :new="FALSE" :template="$template" :updated="FALSE"/>
+									<x-attribute-type :o="$ao" :edit="TRUE" :new="TRUE" :template="$template" :updated="FALSE"/>
 								@endforeach
 
 								@if(! $template)

resources/views/frames/dn.blade.php

@@ -101,7 +101,7 @@
 												<div class="tab-content">
 													@php($up=(session()->pull('updated') ?: collect()))
 													@foreach($o->getVisibleAttributes() as $ao)
-														<x-attribute-type :o="$ao" :edit="TRUE" :new="FALSE" :updated="$up->contains($ao->name_lc)"/>
+														<x-attribute-type :o="$ao" :edit="TRUE" :new="FALSE" :template="$template ?? NULL" :updated="$up->contains($ao->name_lc)"/>
 													@endforeach
 
 													@include('fragment.dn.add_attr')
@@ -124,7 +124,7 @@
 					<!-- Internal Attributes -->
 					<div class="tab-pane mt-3" id="internal" role="tabpanel">
 						@foreach($o->getInternalAttributes() as $ao)
-							<x-attribute-type :o="$ao" :edit="FALSE" :new="FALSE" :updated="FALSE"/>
+							<x-attribute-type :o="$ao" :edit="FALSE" :new="FALSE" :template="$template ?? NULL" :updated="FALSE"/>
 						@endforeach
 					</div>
 				</div>

templates/user_account.json

@@ -15,7 +15,7 @@
 		"givenName": {
 			"display": "First Name",
 			"onchange": [
-				"=autoFill(cn;%givenName% %sn%)",
+				"=autoFill(cn;%givenName% %sn/U%)",
 				"=autoFill(uid;%givenName|0-1/l%%sn/l%)"
 			],
 			"order": 1
@@ -23,7 +23,7 @@
 		"sn": {
 			"display": "Last Name",
 			"onchange": [
-				"=autoFill(cn;%givenName% %sn%)",
+				"=autoFill(cn;%givenName% %sn/U%)",
 				"=autoFill(uid;%givenName|0-1/l%%sn/l%)"
 			],
 			"order": 2