Multiple choices and redirections

+ Now possible to allow multiple choices;
* Add partial settings support;
* Fixed and moved some redirections to appropriate pages;
* CSS adjustments.

index.php

@@ -41,8 +41,14 @@ Flight::route("GET /polls/@id:[a-fA-F0-9]+", function ($id) {
 			Flight::json(format_poll($poll));
 		else
 		{
-			Flight::render("poll", ["poll" => $poll], "body_content");
-			Flight::render("layout");
+			// If unique_ip option is enabled => Only allow unregistered IPs.
+			if (!$poll->settings->unique_ip && isset($poll->ips[Flight::request()->ip]))
+				Flight::redirect("/polls/$id/results"); // A vote is already registered with this IP: redirect.
+			else
+			{
+				Flight::render("poll", ["poll" => $poll], "body_content");
+				Flight::render("layout");
+			}
 		}
 	}
 	else
@@ -59,17 +65,14 @@ Flight::route("POST /polls/@id:[a-fA-F0-9]+/vote", function ($id) {
 		{
 			if (isset(Flight::request()->data["options"]) && is_array(Flight::request()->data["options"]))
 			{ // Check that an options id array exists.
-				//TODO Check that only the authorized number of options are selected.
-				if($poll->vote(Flight::request()->data["options"]) === false) // Vote for the given options.
-				{
-					Flight::halt(403, "<h1>403 Forbidden</h1><h3>Too many votes for this IP address.</h3>");
-				}
-				else
+				if ($poll->vote(Flight::request()->data["options"])) // Vote for the given options.
 				{
 					// Then save and show poll data.
 					$poll->save();
 					Flight::json(format_poll($poll));
 				}
+				else
+					Flight::halt(403, "<h1>403 Forbidden</h1><h3>Too many votes for this IP address or too many options selected.</h3>");
 			}
 			else
 				Flight::halt(403, "<h1>403 Forbidden</h1><h3>Invalid data.</h3>");
@@ -79,18 +82,16 @@ Flight::route("POST /polls/@id:[a-fA-F0-9]+/vote", function ($id) {
 			if (isset(Flight::request()->data["options"]))
 			{ // Check that any data has been sent.
 				$selected_options = Flight::request()->data["options"];
-				if (is_string($selected_options))
-				{ // If it is a string, input[type="radio"] were used so only one option is selected.
-					if($poll->vote([intval($selected_options)]) === false) // Vote for the selected option.
-					{
-						Flight::redirect('/', 401);
-					}
-					else
+				if (is_array($selected_options))
+				{
+					if($poll->vote($selected_options)) // Vote for the selected option.
 					{
 						$poll->save();
 						Flight::redirect("/polls/$id/results"); // Redirect to the results.
 					}
-				} //TODO: Multiple options case.
+					else
+						Flight::redirect("/polls/$id"); // Error: Redirect to the vote page.
+				}
 				else
 					Flight::redirect("/polls/$id"); // Error: Redirect to the vote page.
 			}

models/Poll.php

@@ -4,6 +4,16 @@ require __DIR__ . "/../config/app.php";
 
 define("SAVE_PATH", __DIR__ . "/../db");
 
+define("DEFAULT_SETTINGS", ["unique_ip" => true, "multiple_choices" => false]);
+
+function settings_or_default($settings)
+{
+	return [
+		"unique_ip" => isset($settings["unique_ip"]) ? $settings["unique_ip"] : DEFAULT_SETTINGS["unique_ip"],
+		"multiple_choices" => isset($settings["multiple_choices"]) ? $settings["multiple_choices"] : DEFAULT_SETTINGS["multiple_choices"],
+	];
+}
+
 class Poll
 {
 	/**
@@ -23,7 +33,7 @@ class Poll
 					"votes" => 0,
 				];
 			}
-			$poll->settings = $request_data->settings;
+			$poll->settings = isset($request_data->settings) ? settings_or_default($request_data->settings) : DEFAULT_SETTINGS;
 			$poll->gen_new_id();
 			$poll->delete_token = bin2hex(openssl_random_pseudo_bytes(16));
 			$poll->save();
@@ -70,7 +80,7 @@ class Poll
 	public $title;
 	public $creation_date;
 	public $options = [];
-	public $settings = [];
+	public $settings;
 	public $ips = [];
 	public $delete_token;
 
@@ -98,14 +108,20 @@ class Poll
 	 */
 	public function vote(array $options)
 	{
-		if($this->settings->unique_ip === false)
-		{
-			if(isset($this->ips[Flight::request()->ip]))
-				return false;
+		if (empty($options))
+			return false; // Disallow void selection vote. TODO: Allow it in settings?
+
+		if (!$this->settings->unique_ip)
+		{ // If unique_ip option is enabled => Only allow unregistered IPs.
+			if (isset($this->ips[Flight::request()->ip]))
+				return false; // A vote is already registered with this IP: error.
 			else
-				$this->ips[Flight::request()->ip] = true;
+				$this->ips[Flight::request()->ip] = true; // We register the IP in the used IPs array.
 		}
 
+		if (!$this->settings->multiple_choices && count($options) > 1)
+			return false; // If multiple_choices is not selected, disallow an options array with more than one selected option.
+
 		// For each option in the list, add 1 to the vote number in the poll data.
 		foreach ($options as $option)
 			if (isset($this->options[intval($option)])) // Check invalid options id.
@@ -125,7 +141,7 @@ class Poll
 			"options" => $this->options,
 			"delete_token" => $this->delete_token,
 			"ips" => $this->ips,
-			"settings" => $this->settings
+			"settings" => $this->settings,
 		]), $db);
 		dba_close($db);
 	}

static/css/common.css

@@ -83,7 +83,7 @@ main a.button:hover
 
 main hr
 {
-  border: solid #343434 thin;
+  border: solid #0088E5 thin;
   width: 25rem;
 }
 

static/js/new.js

@@ -37,9 +37,10 @@ document.addEventListener("DOMContentLoaded", () => {
 			body: JSON.stringify({
 				title: form.querySelector(`input[name="title"]`).value,
 				options: get_choices(form),
-                settings: {
-                    "unique_ip": form.querySelector(`input[name="unique_ip"]`).checked,
-                }
+				settings: {
+					unique_ip: form.querySelector(`input[name="unique_ip"]`).checked,
+					multiple_choices: form.querySelector(`input[name="multiple_choices"]`).checked,
+				}
 			}),
 			headers: {
 				"Content-Type": "application/json",

views/home.php

@@ -15,6 +15,11 @@
       <label for="unique_ip" class="check"></label>
       <label for="unique_ip">Allow multiple votes from a single IP</label>
     </div>
+    <div class="option">
+      <input type="checkbox" name="multiple_choices" value="multiple_choices" id="multiple_choices" />
+      <label for="multiple_choices" class="check"></label>
+      <label for="multiple_choices">Allow to select multiple choices in one vote</label>
+    </div>
     <input type="submit" value="Create poll" />
   </form>
   <div id="result" hidden>

views/poll.php

@@ -3,7 +3,7 @@
   <form action="/polls/<?= $poll->id ?>/vote" method="POST" id="poll">
     <?php foreach ($poll->options as $id => $option): ?>
     <div class="option">
-      <input type="radio" name="options" value="<?= $id ?>" id="option-<?= $id ?>" />
+      <input type="<?= $poll->settings->multiple_choices ? "checkbox" : "radio" ?>" name="options[]" value="<?= $id ?>" id="option-<?= $id ?>" />
       <label for="option-<?= $id ?>" class="check"></label>
       <label for="option-<?= $id ?>"><?= $option->label ?></label>
     </div>