added questions backend

backend/database.sql

 -- phpMyAdmin SQL Dump
--- version 5.0.2
+-- version 5.0.3
 -- https://www.phpmyadmin.net/
 --
 -- Host: localhost
--- Generation Time: Dec 07, 2020 at 06:55 AM
--- Server version: 10.4.13-MariaDB
--- PHP Version: 7.4.8
+-- Generation Time: Dec 07, 2020 at 01:18 PM
+-- Server version: 10.4.14-MariaDB
+-- PHP Version: 7.4.11
 
 SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
 START TRANSACTION;
@@ -23,6 +23,24 @@ SET time_zone = "+00:00";
 
 -- --------------------------------------------------------
 
+--
+-- Table structure for table `questions`
+--
+
+CREATE TABLE `questions` (
+  `title` varchar(50) NOT NULL,
+  `username` varchar(50) NOT NULL,
+  `statement` text NOT NULL,
+  `tc1` text NOT NULL,
+  `out1` text NOT NULL,
+  `tc2` text NOT NULL,
+  `out2` text NOT NULL,
+  `stime` datetime NOT NULL,
+  `etime` datetime NOT NULL
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+-- --------------------------------------------------------
+
 --
 -- Table structure for table `users`
 --
@@ -41,15 +59,14 @@ CREATE TABLE `users` (
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
 --
--- Dumping data for table `users`
+-- Indexes for dumped tables
 --
 
-INSERT INTO `users` (`id`, `username`, `name`, `password`, `email`, `img_url`, `n_attempts`, `correct_timeline`, `rating`, `n_files`) VALUES
-(26, 'adarsh', 'adarsh', '$2y$10$PT.s983qY0EjVx2w1JBRT.y3XO3kd4wnWIng7t4.udLeWAizHDfDi', 'a@g.com', 'https://bain.design/wp-content/uploads/2014/08/People-Avatar-Set-Rectangular-12.jpg', 0, '[]', 0, 0);
-
 --
--- Indexes for dumped tables
+-- Indexes for table `questions`
 --
+ALTER TABLE `questions`
+  ADD PRIMARY KEY (`title`);
 
 --
 -- Indexes for table `users`
@@ -70,4 +87,4 @@ COMMIT;
 
 /*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
 /*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
-/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
\ No newline at end of file
+/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

backend/questions/get_questions.php

+<?php
+include_once("database.php");
+
+if($_SERVER['REQUEST_METHOD'])){
+    $sql1 = "SELECT Now()";
+    $currtime = $mysqli->query($sql1);
+    $sql2 = "SELECT * FROM questions WHERE stime <= $currtime and etime >= $currtime";
+    
+    $data = [];
+    if($result = mysqli->query($sql2)){
+        while($row = mysql_fetch_assoc($request)){
+            array_push($data,$row);
+        }
+        echo json_encode($data);
+    }
+    else{
+        http_response_code(404);
+    }
+}
+
+?>
\ No newline at end of file

backend/questions/question_save.php

+<?php
+
+include_once("database.php");
+$postData = file_get_contents("php://input");
+
+if(isset($postData) && !empty($postData)){
+    $request = json_decode($postData);
+    $title = trim($request->title);
+    $username = trim($request->username);  //string
+    $statement = trim($request->statement); //string
+    $tc1 = trim($request->tc1_inp);
+    $out1 = trim($request->tc1_out);
+    $tc2 = trim($request->tc2_inp);
+    $out2 = trim($request->tc2_out);
+    $stime = trim($request->start_time); //string
+    $etime = trim($request->end_time)
+
+    $sql = "INSERT INTO questions($title,$username,$statement,$tc1,$out1,$tc2,$out2,$stime,$etime)";
+
+    if($result = $mysqli->query($sql)){
+        $msg = "question uploaded";
+        echo json_encode($msg);
+    }
+    else{
+        $msg = "title already exists";
+        echo json_encode($msg);
+    }
+
+}
+
+?>
\ No newline at end of file

backend/register.php

@@ -29,3 +29,4 @@ if (isset($postData) && !empty($postData)) {
         echo "mysqli_error($mysqli)";
     }
 }
+?>
\ No newline at end of file