<?php

namespace App\Http\Controllers;

use App\Booking;
use App\SubBooking;
use Illuminate\Http\Request;
use Carbon\Carbon;

class BookingsController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index($year)
    {
        $bookings = Booking::with('subBookings.accountType.accountClass.ioType',
                                  'subBookings.project')
                           ->whereYear('date', '=', $year)
                           ->orderBy('date')
                           ->get()
                           ->groupBy(function($item) {
                               return Carbon::parse($item->date)->format('n');
                           });

        $sums = array();
         
        $startBalance = SubBooking::balanceAt($year - 1 . '-12-31');
        $sums[0]['balance'] = $startBalance;

        $expeditures = SubBooking::expedituresInInterval(
            $year . '-01-01', $year . '-12-31', true);
        
        $incomes = SubBooking::incomesInInterval(
            $year . '-01-01', $year . '-12-31', true);

        // Create an array with the following properties:
        //     'balance' - The account balance at the last day of a month
        //     'expeditures' - the sum of all expeditures in this month
        //     'incomes' - the sum of all incomes in this month plus the account
        //         balance of the previous month
        for ($month = 1; $month <= 12; $month++) {
            $sums[$month]['expeditures'] = $expeditures->where('month', '=', $month)->first()->expeditures;
            $sums[$month]['incomes'] = $expeditures->where('month', '<', $month)->sum('expeditures') +
                                       $incomes->where('month', '<=', $month)->sum('incomes') +
                                       $startBalance;
            $sums[$month]['balance'] = $sums[$month]['expeditures'] +
                                       $sums[$month]['incomes'];
        }

        return view('bookings.index', compact('bookings', 'year', 'sums'));
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function create()
    {
        //
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        //
    }

    /**
     * Display the specified resource.
     *
     * @param  \App\Booking  $booking
     * @return \Illuminate\Http\Response
     */
    public function show(Booking $booking)
    {
        //
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  \App\Booking  $booking
     * @return \Illuminate\Http\Response
     */
    public function edit(Booking $booking)
    {
        //
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \App\Booking  $booking
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, Booking $booking)
    {
        //
    }

    /**
     * Show the dialog for deleting the specified resource.
     *
     * @param  \App\Booking  $booking
     * @return \Illuminate\Http\Response
     */
    public function delete(Booking $booking)
    {
        //
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  \App\Booking  $booking
     * @return \Illuminate\Http\Response
     */
    public function destroy(Booking $booking)
    {
        //
    }
}