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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace App\Http\Controllers;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Illuminate\Http\Request;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use App\Judite\Models\Exchange;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use App\Judite\Models\Enrollment;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Illuminate\Support\Facades\DB;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use App\Http\Requests\Exchange\CreateRequest;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use App\Exceptions\EnrollmentCannotBeExchangedException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use App\Exceptions\ExchangeEnrollmentsOnDifferentCoursesException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class EnrollmentExchangeController extends Controller  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Create a new controller instance.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->middleware('can.exchange'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Show the form for creating a new resource.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param int $enrollmentId  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \Illuminate\Http\Response  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function create($enrollmentId)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        try { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $data = DB::transaction(function () use ($enrollmentId) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $enrollment = Enrollment::ownedBy(auth()->user()->student)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    ->findOrFail($enrollmentId);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                if ($enrollment->availableForExchange()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    throw new \LogicException('The enrollment is not available for exchange.'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $matchingEnrollments = Enrollment::similarEnrollments($enrollment)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    ->orderByStudent()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    ->get();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return compact('enrollment', 'matchingEnrollments'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            });  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $data['matchingEnrollments'] = $data['matchingEnrollments']->map(function ($item) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'id' => $item->id,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    '_toString' => $item->present()->inlineToString(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            });  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return view('exchanges.create', $data); | 
            
                            
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                        } catch (\LogicException $e) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            flash($e->getMessage())->error();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return redirect()->route('home'); | 
            
                            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Store a newly created resource in storage.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param int                                       $enrollmentId  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param \App\Http\Requests\Exchange\CreateRequest $request  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \Illuminate\Http\Response  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function store($enrollmentId, CreateRequest $request)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        try { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            DB::transaction(function () use ($enrollmentId, $request) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $this->validate($request, [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'to_enrollment_id' => 'exists:enrollments,id',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $fromEnrollment = Enrollment::ownedBy(auth()->user()->student)->findOrFail($enrollmentId);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $toEnrollment = Enrollment::find($request->input('to_enrollment_id')); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                // Firstly check if the inverse exchange for the same enrollments  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                // already exists. If the inverse record is found then we will  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                // exchange and update both enrollments of this exchange.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                if ($exchange = Exchange::findMatchingExchange($fromEnrollment, $toEnrollment)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    return $exchange->perform();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                // Otherwise, we create a new exchange between both enrollments  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                // so the user that owns the target enrollment can confirm the  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                // exchange and allow the other user to enroll on the shift.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $exchange = Exchange::make();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $exchange->setExchangeEnrollments($fromEnrollment, $toEnrollment);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $exchange->save();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return $exchange;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            });  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            flash('The exchange was successfully proposed.')->success(); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } catch (EnrollmentCannotBeExchangedException | ExchangeEnrollmentsOnDifferentCoursesException $e) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            flash($e->getMessage())->error();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return redirect()->route('home'); | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Remove the specified resource from storage.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param int $id  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \Illuminate\Http\Response  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function destroy($id)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        DB::transaction(function () use ($id) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $exchange = Exchange::ownedBy(auth()->user()->student)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                ->findOrFail($id);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $exchange->delete();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            return $exchange;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        });  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        flash('The shift exchange request was successfully deleted.')->success(); | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return redirect()->back();  | 
            
                            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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