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answersystem.php
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answersystem.php
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<?php
session_start();
//<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
//<script type="text/javascript" src="general.js"></script>
?>
<?php
include 'dbh.php';
include 'functions.php';
if(isset($_SESSION['id'])){//if user has logged in
if(isset($_POST['datetime']) && isset($_POST['questionId']) && isset($_POST['numberOfAnswersActual']))
{
if($_FILES['answerMeme']['size']!=0) {
//if a file is selected
$file_size=$_FILES['answerMeme']['size'];
if($file_size<6000000){//max file size is 6MB
$file_name=$_FILES['answerMeme']['name'];//gets the name of the meme(that is the name that was there during uploading the meme)
$ext = pathinfo($file_name, PATHINFO_EXTENSION);//this amazing function gets the extension of the image(meme) file e.g. "jpg","png" without the dot before the extension i.e., ".jpg",".png"..this dot has to be added later on
if($ext == "jpg" || $ext == "png" || $ext == "jpeg" || $ext == "gif" ){
//if user has submitted the comment
if(isset($_POST['answer'])){
$answer=mysqli_real_escape_string($conn,$_POST['answer']);
}
else{
$answer="";
}
$datetime=mysqli_real_escape_string($conn,$_POST['datetime']);
$questionId=mysqli_real_escape_string($conn,$_POST['questionId']);
$username=mysqli_real_escape_string($conn,$_SESSION['username']);
$userId=mysqli_real_escape_string($conn,$_SESSION['id']);
$file_type=$_FILES['answerMeme']['type'];//gets file type
$file_tmp_name=$_FILES['answerMeme']['tmp_name'];//gets the temporary location where the meme is saved before it is moved to the desired directory
$sql="INSERT INTO answerstable (answerForQuestionId, answerByUserId, answerByUserName, likes, numberOfReplies, answer, datetime) VALUES ('$questionId', '$userId', '$username', 0, 0, '$answer', '$datetime')";
$result=mysqli_query($conn,$sql);
$answerId = mysqli_insert_id($conn);//this is done to fetch the id of the comment
$answerMemeName="questionId=".$questionId."answerId=".$answerId;
//here we move the meme to the desired location and change the image name to the title of the meme so that it is simpler to find when it is to be displayed
$filepath="users/".$_SESSION['username']."/answerMemes/".$answerMemeName.".$ext";
move_uploaded_file($file_tmp_name, $filepath);
$sql1="UPDATE answerstable SET answerMemeDestination='$filepath' WHERE id='$answerId'";
$result1=mysqli_query($conn,$sql1);
$answerDivName="answerdiv".$answerId;
//increment number of comments in memestable
$numberOfAnswers=mysqli_real_escape_string($conn,$_POST['numberOfAnswersActual'])+1;
$sql="UPDATE questionstable SET numberOfAnswers='$numberOfAnswers' WHERE id='$questionId'";//updating database
$result=mysqli_query($conn,$sql);
//updating notification
$sql02="SELECT askerId,question FROM questionstable WHERE id='$questionId'";//getting image title
$result02=mysqli_query($conn,$sql02);
$row02=mysqli_fetch_assoc($result02);
$question=$row02['question'];
$uid=$row02['askerId'];
//echo '$question'.$question;
//echo '$uid'.$uid;
if($uid!=$_SESSION['id']){
//if the user is commenting on his own meme, then no notification
date_default_timezone_set('Asia/Kolkata');//setting the timezone
$datetime=date('Y-m-d H:i:s');
$sql01="SELECT username FROM memberstable WHERE id='$userId'";//getting notification sender's username
$result01=mysqli_query($conn,$sql01);
$row01=mysqli_fetch_assoc($result01);
$senderUsername=$row01['username'];
$questionForNotification=(strlen($question) > 13) ? substr($question,0,10).'...' : $question;
$notificationString=htmlentities($senderUsername).' posted an answer for your question "<i>'.htmlentities($questionForNotification).'</i>"';
$notificationLink='questiondisplay.php?id='.htmlentities($questionId).'#'.htmlentities($answerDivName);
$notificationType="answer";
$sql4="INSERT INTO notifications_table (senderId,receiverId,notificationType,notification,notificationLink,viewingStatus,datetime,notificationForEventId) VALUES ('$userId','$uid','$notificationType','$notificationString','$notificationLink',0,'$datetime','$answerId')";
$result4=mysqli_query($conn,$sql4);
}
/*
?>
<div class="answer_div" id="<?php echo htmlentities($answerDivName); ?>">
<pre class="answer" id="answer<?php echo htmlentities($answerId); ?>" contenteditable="false"><?php echo htmlentities($answer); ?></pre>
<img src="<?php echo htmlentities($filepath); ?>" style="width:300px;height:300px;">
<p class="username">Posted By:<?php echo htmlentities($username); ?></p>
<?php
echo '<p class="datetime">'.getTime($datetime).'</p>';//echo is done specifically for this because otherwise, for some reason, date doesnot get displayed -_-' XD
?>
<p class="likes" id="answerlikes<?php echo htmlentities($answerId); ?>">Likes: 0</p>
<p class="numberOfReplies" id="numberOfReplies<?php echo htmlentities($answerId); ?>">Number of replies: 0</p>
<button type="submit" class="deletecommentbutton" name="<?php echo htmlentities($answerId); ?>">Delete comment</button>
<?php
/*<button type="submit" class="editcommentbutton" name="<?php echo $commentId; ?>">Edit comment</button>
//<button type="submit" class="updatecommentbutton" name="<?php echo $commentId; ?>" style="display:none">Update comment</button>
*/
/*
echo '<p id="answerLikeError'.htmlentities($answerId).'"></p>';
//shows/hides reply button on clicking
echo '<button class="showanswerreplyformbutton" name="'.htmlentities($answerId).'">Reply</button>';
echo '<form method="post" class="answerreplyform" id="answerreplyform'.htmlentities($answerId).'" action="" style="display:none">
<input type="hidden" id="answerId'.htmlentities($answerId).'" name="answerId" value="'.htmlentities($answerId).'">
<input type="hidden" id="datetime'.htmlentities($answerId).'" name="datetime" value="'.date('Y-m-d H:i:s').'">
<textarea id="replytext'.htmlentities($answerId).'" name="answerreply" placeholder="Write reply"></textarea><br>
<input type="file" id="answerReplyMeme" name="answerReplyMeme"><br>
<button type="submit" name="'.htmlentities($answerId).'" class="postanswerreplybutton">post reply</button>
</form>';
echo '<p id="answerreplyerror'.htmlentities($answerId).'"></p>';
echo '<div id="allanswerreplies'.htmlentities($answerId).'" class="allanswerreplies" style="display:none"></div>';//
?>
</div>
<?php
*/
$sql11="SELECT profilePictureLocation FROM memberstable WHERE id='$userId'";
$result11=mysqli_query($conn,$sql11);
$row11=mysqli_fetch_assoc($result11);
$ppl=$row11['profilePictureLocation'];
?>
<div class="answer_div comments-dedicated comments" id="answerdiv<?php echo htmlentities($answerId); ?>">
<a href="userprofile.php?id=<?php echo $userId; ?>">
<div class="comment-top">
<img src="<?php echo $ppl; ?>" class="notif-dp" id="comment-dp">
</div>
</a>
<p class="real-comment">
<span class="username" id="dedicated-username" style="position:relative;top:0px;"><?php echo $username; ?></span><br>
<span class="answer" id="answer<?php echo htmlentities($answerId); ?>" contenteditable="false"><?php echo htmlentities($answer); ?>
<br>
<?php //pre prints the comment exactly as it has been posted ?>
<?php
if($filepath!=''){
echo '<img src="'.htmlentities($filepath).'" style="max-width:700px"><br>';
}
?>
<?php
echo '<span class="datetime comment-info comment-time">'.getTime($datetime).'</span>';//echo is done specifically for this because otherwise, for some reason, date doesnot get displayed -_-' XD
?>
<span class="likes comment-info" id="answerlikes<?php echo htmlentities($answerId); ?>" style="margin-left:0px">Likes: 0</span>
<span class="numberOfReplies comment-info comment-replies" id="numberOfReplies<?php echo htmlentities($answerId); ?>">Number of replies: 0</span><br>
<?php
//answer like button
$answerlikesLabel="answerlikes".$answerId;
echo '<a class="likeanswerbutton action-link like-link-answer" onclick="answerlikeFunction(\''.htmlentities($answerId).'\',\''.htmlentities($answerlikesLabel).'\');" id="answerlike'.htmlentities($answerId).'" name="'.htmlentities($answerId).'">Like</a>';
//shows/hides reply button on clicking
echo '<a class="showanswerreplyformbutton action-link reply-link-answer" name="'.htmlentities($answerId).'">Reply</a></p>';
echo '<div><a class="display-edit"><span class="glyphicon glyphicon-chevron-down"></span></a></div>';
echo '<div class="edit-panel"><button type="submit" class="deleteanswerbutton delete-button" name="'.htmlentities($answerId).'">Delete answer</button></div>';
echo '<p id="answerLikeError'.htmlentities($answerId).'"></p>';
echo '<form method="post" class="answerreplyform" id="answerreplyform'.htmlentities($answerId).'" action="" style="display:none">
<div class="answer-reply-form"><input type="hidden" id="answerId'.htmlentities($answerId).'" value="'.htmlentities($answerId).'" name="answerId">
<input type="hidden" id="datetime'.htmlentities($answerId).'" value="'.date('Y-m-d H:i:s').'" name="datetime">
<textarea class="reply-answer-text form-control" rows="2" id="replytext'.htmlentities($answerId).'" placeholder="Write reply" name="answerreply"></textarea>
<h4 class="add-image-header" style="margin-top:15px">Add Image: </h4>
<input type="file" id="answerReplyMeme" class="filestyle" data-buttonName="reply-small-add btn" data-icon="false" data-buttonText="+" data-input="false" name="answerReplyMeme"><br>
<button type="submit" name="'.htmlentities($answerId).'" class="postanswerreplybutton btn">Post</button>
</div>
</form>';
/*echo '<button class="includeExternalImageButton" id="includeExternalImageButton'.htmlentities($answerId).'" name="replytext'.htmlentities($answerId).'" style="display:none;top:70px;">Include external image</button>
<button class="includeLinkButton" id="includeLinkButton'.htmlentities($answerId).'" name="replytext'.htmlentities($answerId).'" style="display:none;top:90px;">Include link</button></div>';*/
echo '<a class="answerrepliestogglebutton replies" name="'.htmlentities($answerId).'" style="display:none">Replies <span class="glyphicon glyphicon-chevron-down"></span></a>';
echo '<p id="answerreplyerror'.htmlentities($answerId).'"></p>';
echo '<div id="allanswerreplies'.htmlentities($answerId).'" class="allanswerreplies" style="display:none"></div>';
echo '</div></div>';
exit;
}
else{
echo "wrong file type";
}
}
else{
echo "file too large";
}
}
else{
//no image selected as an answer
if(isset($_POST['answer'])){
//if user has submitted the comment
$answer=mysqli_real_escape_string($conn,$_POST['answer']);
$datetime=mysqli_real_escape_string($conn,$_POST['datetime']);
$questionId=mysqli_real_escape_string($conn,$_POST['questionId']);
$username=$_SESSION['username'];
$userId=$_SESSION['id'];
$sql="INSERT INTO answerstable (answerForQuestionId, answerByUserId, answerByUserName, likes, numberOfReplies, answer, datetime) VALUES ('$questionId', '$userId', '$username', 0, 0, '$answer', '$datetime')";
$result=mysqli_query($conn,$sql);
$answerId = mysqli_insert_id($conn);//this is done to fetch the id of the comment
$answerDivName="answerdiv".$answerId;
//increment number of comments in memestable
$numberOfAnswers=mysqli_real_escape_string($conn,$_POST['numberOfAnswersActual'])+1;
$sql="UPDATE questionstable SET numberOfAnswers='$numberOfAnswers' WHERE id='$questionId'";//updating database
$result=mysqli_query($conn,$sql);
//updating notification
$sql02="SELECT askerId,question FROM questionstable WHERE id='$questionId'";//getting image title
$result02=mysqli_query($conn,$sql02);
$row02=mysqli_fetch_assoc($result02);
$question=mysqli_real_escape_string($conn,$row02['question']);
$uid=mysqli_real_escape_string($conn,$row02['askerId']);
//echo '$question'.$question;
//echo '$uid'.$uid;
if($uid!=$_SESSION['id']){
//if the user is commenting on his own meme, then no notification
date_default_timezone_set('Asia/Kolkata');//setting the timezone
$datetime=date('Y-m-d H:i:s');
$sql01="SELECT username FROM memberstable WHERE id='$userId'";//getting notification sender's username
$result01=mysqli_query($conn,$sql01);
$row01=mysqli_fetch_assoc($result01);
$senderUsername=$row01['username'];
$questionForNotification=(strlen($question) > 13) ? substr($question,0,10).'...' : $question;
$notificationString=htmlentities($senderUsername).' posted an answer for your question "<i>'.htmlentities($questionForNotification).'</i>"';
$notificationLink='questiondisplay.php?id='.htmlentities($questionId).'#'.htmlentities($answerDivName);
$notificationType="answer";
$sql4="INSERT INTO notifications_table (senderId,receiverId,notificationType,notification,notificationLink,viewingStatus,datetime,notificationForEventId) VALUES ('$userId','$uid','$notificationType','$notificationString','$notificationLink',0,'$datetime','$answerId')";
$result4=mysqli_query($conn,$sql4);
}
/*
?>
<div class="answer_div" id="<?php echo htmlentities($answerDivName); ?>">
<pre class="answer" id="answer<?php echo htmlentities($answerId); ?>" contenteditable="false"><?php echo htmlentities($answer); ?></pre>
<p class="username">Posted By:<?php echo htmlentities($username); ?></p>
<?php
echo '<p class="datetime">'.getTime($datetime).'</p>';//echo is done specifically for this because otherwise, for some reason, date doesnot get displayed -_-' XD
?>
<p class="likes" id="answerlikes<?php echo htmlentities($answerId); ?>">Likes: 0</p>
<p class="numberOfReplies" id="numberOfReplies<?php echo htmlentities($answerId); ?>">Number of replies: 0</p>
<?php
echo '<button type="submit" class="deleteanswerbutton" name="'.htmlentities($answerId).'">Delete answer</button>';
/*
<button type="submit" class="deletecommentbutton" name="<?php echo $commentId; ?>">Delete comment</button>
<button type="submit" class="editcommentbutton" name="<?php echo $commentId; ?>">Edit comment</button>
<button type="submit" class="updatecommentbutton" name="<?php echo $commentId; ?>" style="display:none">Update comment</button>
*//*
echo '<p id="answerLikeError'.htmlentities($answerId).'"></p>';
//shows/hides reply button on clicking
echo '<button class="showanswerreplyformbutton" name="'.htmlentities($answerId).'">Reply</button>';
echo '<form method="post" class="answerreplyform" id="answerreplyform'.htmlentities($answerId).'" action="" style="display:none">
<input type="hidden" id="answerId'.htmlentities($answerId).'" name="answerId" value="'.htmlentities($answerId).'">
<input type="hidden" id="datetime'.htmlentities($answerId).'" name="datetime" value="'.date('Y-m-d H:i:s').'">
<textarea id="replytext'.htmlentities($answerId).'" name="answerreply" placeholder="Write reply"></textarea><br>
<input type="file" id="answerReplyMeme" name="answerReplyMeme"><br>
<button type="submit" name="'.htmlentities($answerId).'" class="postanswerreplybutton">post reply</button>
</form>';
echo '<p id="answerreplyerror'.htmlentities($answerId).'"></p>';
echo '<div id="allanswerreplies'.htmlentities($answerId).'" class="allanswerreplies" style="display:none"></div>';//
?>
</div>
<?php
*/
$sql11="SELECT profilePictureLocation FROM memberstable WHERE id='$userId'";
$result11=mysqli_query($conn,$sql11);
$row11=mysqli_fetch_assoc($result11);
$ppl=$row11['profilePictureLocation'];
?>
<div class="answer_div comments-dedicated comments" id="answerdiv<?php echo htmlentities($answerId); ?>">
<a href="userprofile.php?id=<?php echo $userId; ?>">
<div class="comment-top">
<img src="<?php echo $ppl; ?>" class="notif-dp" id="comment-dp">
</div>
</a>
<p class="real-comment">
<span class="username" id="dedicated-username" style="position:relative;top:0px;"><?php echo $username; ?></span><br>
<span class="answer" id="answer<?php echo htmlentities($answerId); ?>" contenteditable="false"><?php echo $answer; ?>
<br>
<?php
echo '<span class="datetime comment-info comment-time">'.getTime($datetime).'</span>';//echo is done specifically for this because otherwise, for some reason, date doesnot get displayed -_-' XD
?>
<span class="likes comment-info" id="answerlikes<?php echo htmlentities($answerId); ?>" style="margin-left:0px">Likes: 0</span>
<span class="numberOfReplies comment-info comment-replies" id="numberOfReplies<?php echo htmlentities($answerId); ?>">Number of replies: 0</span><br>
<?php
//answer like button
$answerlikesLabel="answerlikes".$answerId;
$answerlikesinnerhtml="Like";
echo '<a class="likeanswerbutton action-link like-link-answer" onclick="answerlikeFunction(\''.htmlentities($answerId).'\',\''.htmlentities($answerlikesLabel).'\');" id="answerlike'.htmlentities($answerId).'" name="'.htmlentities($answerId).'">'.$answerlikesinnerhtml.'</a>';
echo '<a class="showanswerreplyformbutton action-link reply-link-answer" name="'.htmlentities($answerId).'">Reply</a></p>';
echo '<div><a class="display-edit"><span class="glyphicon glyphicon-chevron-down"></span></a></div>';
echo '<div class="edit-panel"><button type="submit" class="deleteanswerbutton delete-button" name="'.htmlentities($answerId).'">Delete answer</button></div>';
//shows/hides reply button on clicking
echo '<p id="answerLikeError'.htmlentities($answerId).'" class="error-message"></p>';
echo '<form method="post" class="answerreplyform" id="answerreplyform'.htmlentities($answerId).'" action="" style="display:none">
<div class="answer-reply-form"><input type="hidden" id="answerId'.htmlentities($answerId).'" value="'.htmlentities($answerId).'" name="answerId">
<input type="hidden" id="datetime'.htmlentities($answerId).'" value="'.date('Y-m-d H:i:s').'" name="datetime">
<textarea class="reply-answer-text form-control" rows="2" id="replytext'.htmlentities($answerId).'" placeholder="Write reply" name="answerreply"></textarea>
<h4 class="add-image-header" style="margin-top:15px">Add Image: </h4>
<input type="file" id="answerReplyMeme" class="filestyle" data-buttonName="reply-small-add btn" data-icon="false" data-buttonText="+" data-input="false" name="answerReplyMeme"><br>
<button type="submit" name="'.htmlentities($answerId).'" class="postanswerreplybutton btn">Post</button>
</div>
</form>';
/*echo '<button class="includeExternalImageButton" id="includeExternalImageButton'.htmlentities($answerId).'" name="replytext'.htmlentities($answerId).'" style="display:none;top:70px;">Include external image</button>
<button class="includeLinkButton" id="includeLinkButton'.htmlentities($answerId).'" name="replytext'.htmlentities($answerId).'" style="display:none;top:90px;">Include link</button></div>';*/
echo '<a class="answerrepliestogglebutton replies" name="'.htmlentities($answerId).'" style="display:none">Replies <span class="glyphicon glyphicon-chevron-down"></span></a>';
echo '<p id="answerreplyerror'.htmlentities($answerId).'" class="error-message"></p>';
echo '<div id="allanswerreplies'.htmlentities($answerId).'" class="allanswerreplies" style="display:none"></div>';
echo '</div></div>';
exit;
}
}
}
/*else{
//this is for debugging
echo "no data";
}*/
}
else{
echo 'not logged in';//here we need to develop redirecting back to original page from where the user was sent to the signup page
}
?>