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<?php

namespace App\Http\Controllers\V1\Admin\Customer;

use App\Http\Controllers\Controller;
use App\Http\Resources\CustomerResource;
use App\Models\CompanySetting;
use App\Models\Customer;
use App\Models\Expense;
use App\Models\Invoice;
use App\Models\Payment;
use Carbon\Carbon;
use Illuminate\Http\Request;

class CustomerStatsController extends Controller
{
    /**
     * Handle the incoming request.
     *
     * @return \Illuminate\Http\Response
     */
    public function __invoke(Request $request, Customer $customer)
    {
        $this->authorize('view', $customer);

$i = 0;
        $months = [];
        $invoiceTotals = [];
        $expenseTotals = [];
        $receiptTotals = [];
        $netProfits = [];
        $monthCounter = 0;
        $fiscalYear = CompanySetting::getSetting('fiscal_year', $request->header('company'));
        $startDate = Carbon::now();
        $start = Carbon::now();
        $end = Carbon::now();
        $terms = explode('-', $fiscalYear);
        $companyStartMonth = intval($terms[0]);

if ($companyStartMonth <= $start->month) {
            $startDate->month($companyStartMonth)->startOfMonth();
            $start->month($companyStartMonth)->startOfMonth();
            $end->month($companyStartMonth)->endOfMonth();
        } else {
            $startDate->subYear()->month($companyStartMonth)->startOfMonth();
            $start->subYear()->month($companyStartMonth)->startOfMonth();
            $end->subYear()->month($companyStartMonth)->endOfMonth();
        }

if ($request->has('previous_year')) {
            $startDate->subYear()->startOfMonth();
            $start->subYear()->startOfMonth();
            $end->subYear()->endOfMonth();
        }
        while ($monthCounter < 12) {
            array_push(
                $invoiceTotals,
                Invoice::whereBetween(
                    'invoice_date',
                    [$start->format('Y-m-d'), $end->format('Y-m-d')]
                )
                    ->whereCompany()
                    ->whereCustomer($customer->id)
                    ->sum('total') ?? 0
            );
            array_push(
                $expenseTotals,
                Expense::whereBetween(
                    'expense_date',
                    [$start->format('Y-m-d'), $end->format('Y-m-d')]
                )
                    ->whereCompany()
                    ->whereUser($customer->id)
                    ->sum('amount') ?? 0
            );
            array_push(
                $receiptTotals,
                Payment::whereBetween(
                    'payment_date',
                    [$start->format('Y-m-d'), $end->format('Y-m-d')]
                )
                    ->whereCompany()
                    ->whereCustomer($customer->id)
                    ->sum('amount') ?? 0
            );
            array_push(
                $netProfits,
                ($receiptTotals[$i] - $expenseTotals[$i])
            );
            $i++;
            array_push($months, $start->translatedFormat('M'));
            $monthCounter++;
            $end->startOfMonth();
            $start->addMonth()->startOfMonth();
            $end->addMonth()->endOfMonth();
        }

$start->subMonth()->endOfMonth();

$salesTotal = Invoice::whereBetween(
            'invoice_date',
            [$startDate->format('Y-m-d'), $start->format('Y-m-d')]
        )
            ->whereCompany()
            ->whereCustomer($customer->id)
            ->sum('total');
        $totalReceipts = Payment::whereBetween(
            'payment_date',
            [$startDate->format('Y-m-d'), $start->format('Y-m-d')]
        )
            ->whereCompany()
            ->whereCustomer($customer->id)
            ->sum('amount');
        $totalExpenses = Expense::whereBetween(
            'expense_date',
            [$startDate->format('Y-m-d'), $start->format('Y-m-d')]
        )
            ->whereCompany()
            ->whereUser($customer->id)
            ->sum('amount');
        $netProfit = (int) $totalReceipts - (int) $totalExpenses;

$chartData = [
            'months' => $months,
            'invoiceTotals' => $invoiceTotals,
            'expenseTotals' => $expenseTotals,
            'receiptTotals' => $receiptTotals,
            'netProfit' => $netProfit,
            'netProfits' => $netProfits,
            'salesTotal' => $salesTotal,
            'totalReceipts' => $totalReceipts,
            'totalExpenses' => $totalExpenses,
        ];

$customer = Customer::find($customer->id);

return (new CustomerResource($customer))
            ->additional(['meta' => [
                'chartData' => $chartData,
            ]]);
    }
}