fix+add: seats + seat-chooser

app/Models/Showing.php

@@ -2,6 +2,7 @@
 
 namespace App\Models;
 
+use Carbon\Carbon;
 use Illuminate\Database\Eloquent\Model;
 
 /**
@@ -45,4 +46,29 @@ class Showing extends Model
         return $this->where('showing_start', '>=', now())->get();
     }
 
+    public function end_time() {
+        $date = new Carbon($this->showing_start);
+        $date->addMinutes($this->movie->movie_length);
+        return $date;
+    }
+
+    public function tickets()
+    {
+        return $this->hasMany(Ticket::class, 'showing_id', 'showing_id');
+    }
+
+    public function tickets_available() {
+        $tickets = $this->room->seats()->count();
+        $tickets_sold = $this->tickets()->count();
+        return $tickets - $tickets_sold;
+    }
+
+    public function find($id)
+    {
+        return Showing::where('showing_id', $id)->first();
+    }
+
+    public function seatMatrix() {
+        return $this->room->seatMatrix($this->showing_id);
+    }
 }