Name and email added

booking.php

@@ -1,45 +1,136 @@
 <?php
 
-//<full name> <email>.
+//<Isaac Gyasi Nimako> <gyasinimako.gh@gmail.com>.
 interface BookingStructure
 {
-    private function bookASlot($from, $to);
+    public function bookASlot($from, $to);
 }
 
 
 class Booking implements BookingStructure
 {
+
+    private $from;
+    private $to;
+
+    private $maxMinute = 120;
+    private $minMinute = 30;
+
+    private $closingTime;
+    private $openingTime;
+
+    private $response = "";
+
     private $bookedSlots = [
         ['from'=>'8:00', 'to'=>'9:30']
-
     ];
-    public function _construct($openingTime, $closingTime)
+
+    public function __construct($openingTime, $closingTime)
     {
-        //add code here
+      $this->openingTime = $openingTime;
+      $this->closingTime = $closingTime;
     }
 
     public function getAllBookings()
     {
-        // add code here
+      return $this->bookedSlots;
     }
 
-    public function bookASlot()
+    public function bookASlot($from, $to)
     {
-        //add code here
+
+      $this->from = $from;
+      $this->to   = $to;
+
+      $from_hour = $from_minute = 0;
+      list($from_hour, $from_minute) = explode(':', $from); 
+
+      $to_hour = $to_minute = 0;
+      list($to_hour, $to_minute) = explode(':', $to); 
+
+      $booked_from_hour = $booked_from_minute = 0;
+      list($booked_from_hour, $booked_from_minute) = explode(':',$this->bookedSlots[0]['from']);
+
+      $booked_to_hour = $booked_to_minute = 0;
+      list($booked_to_hour, $booked_to_minute) = explode(':',$this->bookedSlots[0]['to']);
+
+       $booking_hours_from_minute= $this->convertHoursToMinutes($this->from);
+       $booking_hours_to_minute= $this->convertHoursToMinutes($this->to);
+
+       $bookin_minutes_difference = $booking_hours_to_minute - $booking_hours_from_minute;
+
+       $booking_hour_difference = $to_hour - $booked_from_hour;
+
+      $closingTimeHourTo   =  explode(':',$this->closingTime)['0'];
+      $openingTimeHourFrom =  explode(':',$this->openingTime)['0'];
+
+      $booked_from = $this->bookedSlots[0]["from"];
+      $booked_to   = $this->bookedSlots[0]["to"];
+
+      $this->response= ($to_hour <= $booked_to_hour)?'Sorry there is a meeting from {booked_from} & {$booked_to} ':"";
+
+
+      if($bookin_minutes_difference===0 || $bookin_minutes_difference <$this->minMinute){ 
+
+         $this->response = "Sorry you can't book less than a 30 min slot <br>";
+
+      }
+      if($booking_hour_difference>2 && $to_hour<=$closingTimeHourTo) {
+
+          $this->response = "Sorry you can't book above a 2 hour slot <br>";
+
+      }
+
+      if($to_hour>$closingTimeHourTo){
+
+         $this->response = "Sorry you can't book outside of the closing time <br>";
+
+       }
+
+      if(empty($this->response)){
+
+         $this->bookedSlots = [
+                             ['from' => $this->from,
+                             'to'    => $this->to]
+                           ];
+          return $this->bookedSlots;
+       }else{
+
+          return $this->response;
+       } 
+
     }
 
     public function getOpeningTime()
     {
-        // add code here
+        return  $this->openingTime;
     }
 
     public function getClosingTime()
     {
-        // add code here
+        return  $this->closingTime;
     }
+
+
+    public function convertHoursToMinutes($time){
+
+            $minutes = 0;
+            $time = explode(":", $time); 
+
+            $hours = $time[0]; 
+            if(!empty($time[1])) { 
+                $m = $time[1]; 
+            }else{ 
+                $minutes = "00"; 
+            } 
+            $mm = ($hours * 60)+$minutes; 
+            return $mm; 
+    }
+
 }
 
 
+
 /* Test Cases */
 $bookingInstance = new Booking("6:30", "18:00");
 var_dump($bookingInstance->getAllBookings()); // array(1) { [0]=> array(2) { ["from"]=> string(4) "8:00" ["to"]=> string(4) "9:30" } }
@@ -52,3 +143,4 @@ public function getClosingTime()
 var_dump($bookingInstance->getClosingTime()); // string(5) "18:00"
 var_dump($bookingInstance->getAllBookings()); // array(2) { [0]=> array(2) { ["from"]=> string(4) "8:00" ["to"]=> string(4) "9:30" } [1]=> array(2) { ["from"]=> string(5) "12:00" ["to"]=> string(5) "12:15" } }
 
+