From 5df8516fc8ea4386e9045d72b293d0c8f1417409 Mon Sep 17 00:00:00 2001
From: Daniel Weipert <code@drogueronin.de>
Date: Sun, 2 Jan 2022 01:40:14 +0100
Subject: Validation and submission logic

---
 src/App.php | 106 ++++++++++++++++++++++++++++++++++++++++++++----------------
 1 file changed, 79 insertions(+), 27 deletions(-)

(limited to 'src')

diff --git a/src/App.php b/src/App.php
index c0df751..20cec62 100644
--- a/src/App.php
+++ b/src/App.php
@@ -5,13 +5,10 @@ namespace FlatFileForms;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Yosymfony\Toml\Toml;
+use Yosymfony\Toml\TomlBuilder;
 
 class App
 {
-  private array $routes = [
-
-  ];
-
   /**
    * App constructor.
    */
@@ -28,33 +25,65 @@ class App
     $method = $request->getMethod();
     $path = $request->getPathInfo();
 
-    // GET
-    if ($method == 'GET')  {
-      if (str_ends_with($path, '/fields')) {
-	$content['data'] = Toml::parseFile($contentRoot . $path . '/_fields.toml');
-      }
-      else {
-	$content['data'] = Toml::parseFile($contentRoot . $path . '.toml');
-      }
-    }
-
-    // POST
-    else if ($method == 'POST') {
-      if (str_ends_with($path, 'submit')) {
-	$formPath = $contentRoot . str_replace('/submit', '', $path);
+    try {
+      // GET
+      if ($method == 'GET')  {
+	if (str_ends_with($path, '/fields')) {
+	  $formPath = $contentRoot . str_replace('/fields', '', $path);
 
-	// build fields
-	$fields = $this->buildFields($formPath);
+	  $content['data'] = $this->buildFields($formPath);
+	}
+	else {
+	  $content['data'] = Toml::parseFile($contentRoot . $path . '.toml');
+	}
+      }
 
-	foreach ($fields as $field) {
-	  if ($field['required'] ?? false) {
-	    $content['error'] = 'REQUIRED!';
+      // POST
+      else if ($method == 'POST') {
+	if (str_ends_with($path, '/submit')) {
+	  $formPath = $contentRoot . str_replace('/submit', '', $path);
+
+	  $fields = $this->buildFields($formPath);
+	  $fields = $this->validateFields($fields);
+
+	  // remove surplus fields from response
+	  $fields = array_map(function ($field) {
+	    return array_intersect_key($field, array_flip([
+	      'is_valid',
+	    ]));
+	  }, $fields);
+
+	  $content['data'] = $fields;
+
+	  $hasInvalidFields = in_array(false, array_column($fields, 'is_valid'));
+	  if ($hasInvalidFields) {
+	    $content['error'] = 'Invalid fields';
+	  } else {
+	    $date = new \Datetime();
+	    $entry = [
+	      'fields' => $_POST,
+	      'date' => $date->format('c'),
+	    ];
+
+	    $builder = new TomlBuilder();
+	    $builder->addValue('date', $entry['date']);
+	    $builder->addTable('fields');
+	    foreach ($entry['fields'] as $entryKey => $entryValue) {
+	      $builder->addValue($entryKey, $entryValue);
+	    }
+
+	    $entryDirectory = $formPath . '/entries/' . $date->format('Y/m/d');
+	    @mkdir($entryDirectory, 0774, true);
+	    $entryFilename = $date->format('Ymd_Hi_') . hash('adler32', serialize($entry)) . '.toml';
+	    file_put_contents(
+	      $entryDirectory . '/' . $entryFilename,
+	      $builder->getTomlString()
+	    );
 	  }
 	}
-
-	$content['data'] = $fields;
-	$content['POST'] = $_POST;
       }
+    } catch (\Exception $exception) {
+      $content['error'] = $exception->getMessage();
     }
 
     $response->headers->set('Content-Type', 'application/json');
@@ -69,11 +98,34 @@ class App
   {
     $fields = Toml::parseFile($formPath . '/fields/_fields.toml')['field'] ?? [];
     foreach ($fields as $key => $field) {
-      $field = array_merge($field, Toml::parseFile($formPath . '/fields/' . $field['file']));
+      if (empty($field['name'])) {
+	$field['name'] = $key;
+      }
+
+      if (! empty($field['file'])) {
+	$field = array_merge($field, Toml::parseFile($formPath . '/fields/' . $field['file']));
+      }
+
       $fields[$key] = $field;
     }
 
     return $fields;
   }
+
+  /**
+   * @param array $fields
+   */
+  public function validateFields($fields)
+  {
+    foreach ($fields as $key => &$field) {
+      $field['is_valid'] = true;
+
+      if (($field['required'] ?? false) && empty($_POST[$field['name']])) {
+	$field['is_valid'] = false;
+      }
+    }
+
+    return $fields;
+  }
 }
 
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