A simple (straw) poll web application made with Laravel https://poll.fuwafuwa.moe
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

365 lines
14 KiB

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use Carbon\Carbon;
use Validator;
use DB;
use Cache;
use Config;
use App\Poll;
use App\PollVote;
use App\PollVotingCode;
class PollController extends Controller
{
public function __invoke(Request $request)
{
if($request->format() == 'json') {
return response()->json(['timezone' => Config::get('app.timezone')]);
} else {
return view('create_poll');
}
}
public function create(Request $request)
{
if($request->has('options')) {
$request['options'] = array_filter($request->input('options'), function($i) { return $i !== null; });
}
$request['allow_multiple_answers'] = $request->has('allow_multiple_answers');
$request['hide_results_until_closed'] = $request->has('hide_results_until_closed');
$request['automatically_close_poll'] = $request->has('automatically_close_poll');
$request['set_admin_password'] = $request->has('set_admin_password');
$validatedInput = $request->validate([
'question' => 'required|string',
'options' => 'required|min:2|distinct',
'allow_multiple_answers' => 'required|boolean',
'hide_results_until_closed' => 'required|boolean',
'automatically_close_poll' => 'required|boolean',
'automatically_close_poll_datetime' => 'required_if:automatically_close_poll,true|date|after:now',
'set_admin_password' => 'required|boolean',
'admin_password' => 'required_if:set_admin_password,true|nullable|string',
'duplicate_vote_checking' => 'required|in:none,cookies,codes',
'number_of_codes' => 'required_if:duplicate_vote_checking,codes|integer|min:2'
]);
$poll = new Poll;
$poll->question = $validatedInput['question'];
$poll->duplicate_vote_checking = $validatedInput['duplicate_vote_checking'];
$poll->allow_multiple_answers = $validatedInput['allow_multiple_answers'];
$poll->hide_results_until_closed = $validatedInput['hide_results_until_closed'];
$poll->created_at = Carbon::now();
if($validatedInput['automatically_close_poll']) {
$poll->closes_at = Carbon::parse($validatedInput['automatically_close_poll_datetime']);
}
if($validatedInput['set_admin_password']) {
$poll->admin_password = $validatedInput['admin_password'];
}
$poll->save();
$poll->options()->createMany(array_map(function($i) { return ['text' => $i]; }, $validatedInput['options']));
$poll->save();
if($poll->duplicate_vote_checking == 'codes') {
$codes = $poll->createVotingCodes($validatedInput['number_of_codes']);
}
return redirect()->action('PollController@view', ['poll' => $poll])->with('new', true);
}
public function view(Request $request, Poll $poll)
{
if($poll->closed) {
return redirect()->action('PollController@viewResults', ['poll' => $poll])->with('alreadyClosed', true);
}
$new = $request->session()->pull('new', false);
if($request->format() == 'json') {
$data = [
'id' => $poll->id,
'new' => $new,
'question' => $poll->question,
'options' => $poll->options->map(function($o) { return $o->makeHidden('poll_id'); }),
'multipleAnswersAllowed' => $poll->allow_multiple_answers
];
if($new && $poll->duplicate_vote_checking == 'codes') {
$data['votingUrls'] = $poll->voting_codes()->get()->map(function($c) use($poll) { return action('PollController@view', ['poll' => $poll, 'code' => $c]); });
}
return response()->json($data);
} else {
return view('view_poll')
->with('poll', $poll)
->with('new', $new)
->with('hasVoted', $this->hasVoted($request, $poll))
->with('code', $request->query('code', null));
}
}
public function viewResults(Request $request, Poll $poll)
{
$voted = $request->session()->pull('voted', false);
$alreadyClosed = $request->session()->pull('alreadyClosed', false);
$this->createPieChart($poll);
if($request->format() == 'json') {
$data = [
'id' => $poll->id,
'voted' => $voted,
'alreadyClosed' => $alreadyClosed,
'resultsVisible' => $poll->results_visible
];
if($poll->results_visible) {
$data['results'] = $poll->options->map(function($o) {
$array = $o->makeHidden('poll')->makeHidden('poll_id')->append('vote_count')->toArray();
//I really shouldn't have to do this...
$array['voteCount'] = $array['vote_count'];
unset($array['vote_count']);
return $array;
});
}
return response()->json($data);
} else {
return view('view_poll_results')
->with('poll', $poll)
->with('voted', $voted)
->with('alreadyClosed', $alreadyClosed);
}
}
private static function imageToDataUri($image)
{
ob_start();
imagepng($image);
$dataUri = "data:image/png;base64," . base64_encode(ob_get_contents());
ob_end_clean();
return $dataUri;
}
private function createPieChart(Poll $poll)
{
$voteCount = $poll->votes->count();
if(Cache::has($poll->id) && Cache::get($poll->id)['vote_count'] == $voteCount) {
return;
}
$baseColours = [[0xE8, 0x96, 0x3F], [0xAD, 0x3F, 0xE8], [0x3F, 0xE8, 0x6F], [0xE8, 0xE3, 0x3F], [0x3F, 0x64, 0xEB], [0xE8, 0x3F, 0x65], [0x3F, 0xE8, 0xDB]];
shuffle($baseColours);
$supersamplingFactor = 8;
$width = 512 * $supersamplingFactor;
$height = 512 * $supersamplingFactor;
$padding = 16 * $supersamplingFactor;
$chartWidth = $width - 2 * $padding;
$chartHeight = $height - 2 * $padding;
$colourSquareSize = 13;
$pieChart = imagecreatetruecolor($width, $height);
$transparent = imagecolorallocatealpha($pieChart, 0xFF, 0xFF, 0xFF, 0x7F);
imagefill($pieChart, 0, 0, $transparent);
imagesavealpha($pieChart, true);
imageantialias($pieChart, true);
$colourSquareUris = [];
$startDegrees = 0;
$sortedOptions = $poll->options->sortByDesc(function($option) { return $option->vote_count; });
$nonZeroOptions = $sortedOptions->filter(function($option) { return $option->vote_count > 0; })->values();
debug($nonZeroOptions);
for($i = 0; $i < $nonZeroOptions->count(); $i++) {
$option = $nonZeroOptions[$i];
//TODO: Fix gaps
$degrees = round($option->vote_count / $voteCount * 360);
$endDegrees = min($startDegrees + $degrees, 360);
$c = function($j) use($i, $baseColours, $nonZeroOptions) {
return $baseColours[$i % count($baseColours)][$j]
+ (255 - $baseColours[$i % count($baseColours)][$j])
* floor($i / count($baseColours)) / (floor($nonZeroOptions->count() / count($baseColours)) + 1);
};
$colour = imagecolorallocate($pieChart, $c(0), $c(1), $c(2));
debug([$option->text, [$startDegrees, $endDegrees], [$c(0), $c(1), $c(2)]]);
imagefilledarc($pieChart, $width / 2, $height / 2, $chartWidth, $chartHeight, $startDegrees, $endDegrees, $colour, IMG_ARC_PIE);
$colourSquare = imagecreatetruecolor($colourSquareSize, $colourSquareSize);
$colourSquareColour = imagecolorallocate($colourSquare, $c(0), $c(1), $c(2));
imagefill($colourSquare, 0, 0, $colourSquareColour);
$colourSquareUris[$option->id] = PollController::imageToDataUri($colourSquare);
$startDegrees = $endDegrees;
}
debug($colourSquareUris);
$resized = imagecreatetruecolor($width / $supersamplingFactor, $height / $supersamplingFactor);
imagecolortransparent($resized, imagecolorallocatealpha($resized, 0, 0, 0, 0x7F));
imagealphablending($resized, false);
imagesavealpha($resized, true);
imagecopyresampled($resized, $pieChart, 0, 0, 0, 0, $width / $supersamplingFactor, $height / $supersamplingFactor, $width, $height);
$pieChart = $resized;
$dataUri = PollController::imageToDataUri($pieChart);
Cache::put($poll->id, ['vote_count' => $voteCount, 'pie_chart' => $dataUri, 'colour_squares' => $colourSquareUris], now()->addDays(1));
}
public function hasVoted(Request $request, Poll $poll)
{
if($poll->duplicate_vote_checking == 'cookies') {
if($request->session()->exists($poll->id)) {
return true;
}
} else if($poll->duplicate_vote_checking == 'codes') {
$code = PollVotingCode::find($request->query('code'));
if($code == null || $code->used) {
return true;
}
}
return false;
}
public function vote(Request $request, Poll $poll)
{
if($poll->closed) {
return redirect()->action('PollController@viewResults', ['poll' => $poll])->with('alreadyClosed', true);
}
if($this->hasVoted($request, $poll)) {
return redirect()->action('PollController@view', ['poll' => $poll]);
}
if($poll->allow_multiple_answers) {
$validatedInput = $request->validate([
'options' => 'required|distinct',
]);
} else {
$validatedInput = $request->validate([
'options' => 'required|distinct|min:1|max:1',
]);
}
DB::beginTransaction();
foreach($validatedInput['options'] as $option)
{
if($poll->options()->find($option) == null) {
DB::rollBack();
return redirect()->action('PollController@view', ['poll' => $poll]);
}
$vote = new PollVote;
$vote->poll_option_id = $option;
$poll->votes()->save($vote);
}
DB::commit();
if($poll->duplicate_vote_checking == 'cookies') {
$request->session()->put($poll->id, null);
} else if($poll->duplicate_vote_checking == 'codes') {
$code = PollVotingCode::find($request->query('code'));
$code->used = true;
$code->save();
}
return redirect()->action('PollController@viewResults', ['poll' => $poll])->with('voted', true);
}
public function admin(Request $request, Poll $poll)
{
$changed = $request->session()->pull('changed', false);
$extraCodes = $request->session()->pull('extraCodes', null);
if($poll->admin_password == null || $request->query('password') != $poll->admin_password) {
return redirect()->action('PollController@viewResults', ['poll' => $poll]);
}
if($request->format() == 'json') {
return response()->json([
"id" => $poll->id,
"changed" => $changed,
"extraVotingUrls" => collect($extraCodes)->map(function($c) use($poll) { return action('PollController@view', ['poll' => $poll, 'code' => $c]); })
]);
} else {
return view('edit_poll')->with('poll', $poll)->with('changed', $changed)->with('extraCodes', $extraCodes);
}
}
public function edit(Request $request, Poll $poll)
{
if($poll->admin_password == null || $request->query('password') != $poll->admin_password) {
return redirect()->action('PollController@viewResults', ['poll' => $poll]);
}
if($request->has('extra_codes')) {
if($poll->duplicate_vote_checking != 'codes') {
return redirect()->action('PollController@view', ['poll' => $poll]);
}
$validatedInput = $request->validate([
'extra_codes' => 'integer|min:1'
]);
$codes = $poll->createVotingCodes($validatedInput['extra_codes']);
return redirect()
->action('PollController@admin', ['poll' => $poll, 'password' => $poll->admin_password])
->with('extraCodes', $codes);
} else if($request->has('close_now')) {
$poll->closes_at = Carbon::now();
$poll->save();
return redirect()->action('PollController@viewResults', ['poll' => $poll]);
} else {
$request['allow_multiple_answers'] = $request->has('allow_multiple_answers');
$request['hide_results_until_closed'] = $request->has('hide_results_until_closed');
$request['automatically_close_poll'] = $request->has('automatically_close_poll');
$request['set_admin_password'] = $request->has('set_admin_password');
$validatedInput = $request->validate([
'hide_results_until_closed' => 'required|boolean',
'automatically_close_poll' => 'required|boolean',
'automatically_close_poll_datetime' => 'required_if:automatically_close_poll,true|date|after:now',
'set_admin_password' => 'required|boolean',
'admin_password' => 'required_if:set_admin_password,true|nullable|string',
]);
$poll->hide_results_until_closed = $validatedInput['hide_results_until_closed'];
$poll->closes_at = $validatedInput['automatically_close_poll'] ? Carbon::parse($validatedInput['automatically_close_poll_datetime']) : null;
$poll->admin_password = $validatedInput['set_admin_password'] ? $validatedInput['admin_password'] : null;
$poll->save();
if($poll->closed || $poll->admin_password == null) {
return redirect()->action('PollController@viewResults', ['poll' => $poll]);
} else {
return redirect()
->action('PollController@admin', ['poll' => $poll, 'password' => $poll->admin_password])
->with('changed', true);
}
}
}
}