From a8a99f18524837759083de329e1bfdeced23b768 Mon Sep 17 00:00:00 2001
From: Dave Mc Nicoll <dave.mcnicoll@cslsj.qc.ca>
Date: Wed, 5 Feb 2020 16:21:23 -0500
Subject: [PATCH] - First WIP on form handling

---
 src/Method/Form.php                 | 47 +++-------------
 src/Method/FormContext.php          | 86 +++++++++++++++++++++++++++++
 src/Method/FormContextInterface.php |  9 +++
 src/Method/FormHandler.php          | 50 +++++++++++++++++
 src/Method/FormInterface.php        | 12 ++++
 src/Method/FormMessage.php          |  7 +++
 6 files changed, 173 insertions(+), 38 deletions(-)
 create mode 100644 src/Method/FormContext.php
 create mode 100644 src/Method/FormContextInterface.php
 create mode 100644 src/Method/FormHandler.php
 create mode 100644 src/Method/FormInterface.php
 create mode 100644 src/Method/FormMessage.php

diff --git a/src/Method/Form.php b/src/Method/Form.php
index 845587e..fa48bb8 100644
--- a/src/Method/Form.php
+++ b/src/Method/Form.php
@@ -16,6 +16,8 @@ class Form implements Extension {
 
     public string $token;
 
+    public FormContext $formContext;
+    
     public ServerRequestInterface $request;
     
     public function __construct(ServerRequestInterface $request, Context $context) {
@@ -27,7 +29,11 @@ class Form implements Extension {
 
     public function register(Context $context) : void
     {
+        $this->formContext = new FormContext($this->request);
+        
         $context->pushFunction("form", [ $this, 'formClass' ]);
+        
+        #$context->
     }
 
     public function form_csrf(string $field, string $value) {
@@ -46,43 +52,8 @@ class Form implements Extension {
         return $value;
     }
 
-    public function formClass($form) {
-        return new class($this->request, $form) {
-
-            public bool $sent = false;
-
-            protected ServerRequestInterface $request;
-            
-            protected /* FormInterface */ $form;
-
-            public function __construct(ServerRequestInterface $request, /* FormInterface */ $form)
-            {
-                $this->request = $request;
-                $this->sent = $this->requestSent();
-                $this->form = $form;
-            }
-            
-            protected function initialize() {
-                $this->form->prepare();
-                    
-                if ( $this->sent ) {
-                    if ( $this->form->validate() ) {
-                        $this->form->save();
-                    }
-                }
-            }
-
-            protected function requestSent() : bool
-            {
-                return in_array($this->request->getMethod(), [
-                    "DELETE", "PATCH", "POST", "PUT",
-                ]);
-            }
-
-            protected function honeyPot() : bool
-            {
-                $this->request->getServerParams();
-            }
-        };
+    public function formClass(FormInterface $form, ? FormContext $formContext = null) 
+    {
+        return new FormHandler($this->request, $form, $formContext ?: $this->formContext);
     }
 }
diff --git a/src/Method/FormContext.php b/src/Method/FormContext.php
new file mode 100644
index 0000000..efc0394
--- /dev/null
+++ b/src/Method/FormContext.php
@@ -0,0 +1,86 @@
+<?php
+
+namespace Picea\Ui\Method;
+
+use Psr\Http\Message\ServerRequestInterface,
+    Psr\Http\Message\ResponseInterface;
+
+class FormContext implements FormContextInterface
+{
+    public bool $formSent;
+    
+    public array $values;
+
+    public array $messages = [];
+    
+    public ServerRequestInterface $request;
+    
+    public ? ResponseInterface $response = null;
+
+    public function __construct(ServerRequestInterface $request) 
+    {
+        $this->request = $request;
+        $this->values = $request->getParsedBody() ?: [];
+    }
+    
+    public function valid() : bool
+    {
+        foreach($this->messages as $message) {
+            if ( $message->isError() ) {
+                return false;
+            }
+        }
+        
+        return true;
+    }
+    
+    public function formSent() : bool
+    {
+        return $this->formSent;
+    }
+
+    public function __set($key, $value)
+    {
+        return $this->set($key, $value);
+    }
+
+    public function __get($key)
+    {
+        return $this->get($key);
+    }
+
+    public function __isset($key)
+    {
+        return array_key_exists($key, $_SESSION);
+    }
+
+    public function __unset($key)
+    {
+        $this->delete($key);
+    }   
+    
+    public function get(string $key, $default = null)
+    {
+        return $this->has($key) ? $this->values[$key] : $default;
+    }
+
+    public function set(string $key, $value)
+    {
+        return $_SESSION[$key] = $value;
+    }
+
+    public function delete(string $key) : void
+    {
+        unset($this->values[$key]);
+    }
+
+    public function has(string $key) : bool
+    {
+        return array_key_exists($key, $this->values);
+    }
+    
+    public function pushMessage(FormMessage $message) : void
+    {
+        $this->messages[] = $message;
+    }
+}
\ No newline at end of file
diff --git a/src/Method/FormContextInterface.php b/src/Method/FormContextInterface.php
new file mode 100644
index 0000000..13fc1ea
--- /dev/null
+++ b/src/Method/FormContextInterface.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace Picea\Ui\Method;
+
+interface FormContextInterface {
+    public function valid() : bool;
+    
+    public function formSent() : bool;
+}
\ No newline at end of file
diff --git a/src/Method/FormHandler.php b/src/Method/FormHandler.php
new file mode 100644
index 0000000..4dc2027
--- /dev/null
+++ b/src/Method/FormHandler.php
@@ -0,0 +1,50 @@
+<?php
+
+namespace Picea\Ui\Method;
+
+use Psr\Http\Message\ServerRequestInterface;
+
+class FormHandler {
+    # return new class($this->request, new FormContext(), $form) {
+
+    public bool $sent = false;
+    
+    public FormContext $context;
+
+    protected ServerRequestInterface $request;
+
+    protected FormInterface $form;
+
+    public function __construct(ServerRequestInterface $request, FormInterface $form, ? FormContextInterface $context = null)
+    {
+        $this->request = $request;
+        $this->sent = $this->requestSent();
+        $this->form = $form;
+        $this->context = $context ?: new FormContext($request);
+        $this->context->formSent = $this->sent;
+        $this->initialize();
+    }
+
+    protected function initialize() : void
+    {
+        $this->form->initialize($this->context);
+
+        if ( $this->sent ) {
+            if ( $this->form->validate($this->context) ) {
+                $this->form->save($this->context);
+            }
+        }
+    }
+
+    protected function requestSent() : bool
+    {
+        return in_array($this->request->getMethod(), [
+            "DELETE", "PATCH", "POST", "PUT",
+        ]);
+    }
+
+    protected function honeyPot() : bool
+    {
+        $this->request->getServerParams();
+    }
+}
diff --git a/src/Method/FormInterface.php b/src/Method/FormInterface.php
new file mode 100644
index 0000000..0f5971f
--- /dev/null
+++ b/src/Method/FormInterface.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace Picea\Ui\Method;
+
+interface FormInterface 
+{
+    public function initialize(FormContextInterface $context) : void;
+
+    public function validate(FormContextInterface $context) : bool;
+    
+    public function save(FormContextInterface $context) : void;
+}
\ No newline at end of file
diff --git a/src/Method/FormMessage.php b/src/Method/FormMessage.php
new file mode 100644
index 0000000..f2066b7
--- /dev/null
+++ b/src/Method/FormMessage.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace Picea\Ui\Method;
+
+interface FormMessage { 
+    public function isError() : bool;
+}