<?php

namespace Kanakku\Http\Controllers\V1\Customer;

use Kanakku\Http\Controllers\Controller;
use Kanakku\Models\Invoice;
use Kanakku\Models\Expense;
use Kanakku\Models\Payment;
use Kanakku\Models\User;
use Kanakku\Models\CompanySetting;
use Carbon\Carbon;
use Illuminate\Http\Request;

class CustomerStatsController extends Controller
{
    /**
     * Handle the incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function __invoke(Request $request, User $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);

        if ($terms[0] <= $start->month) {
            $startDate->month($terms[0])->startOfMonth();
            $start->month($terms[0])->startOfMonth();
            $end->month($terms[0])->endOfMonth();
        } else {
            $startDate->subYear()->month($terms[0])->startOfMonth();
            $start->subYear()->month($terms[0])->startOfMonth();
            $end->subYear()->month($terms[0])->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'), $end->format('Y-m-d')]
                )
                    ->whereCompany($request->header('company'))
                    ->whereCustomer($customer->id)
                    ->sum('total') ?? 0
            );
            array_push(
                $expenseTotals,
                Expense::whereBetween(
                    'expense_date',
                    [$start->format('Y-m-d'), $end->format('Y-m-d')]
                )
                    ->whereCompany($request->header('company'))
                    ->whereUser($customer->id)
                    ->sum('amount') ?? 0
            );
            array_push(
                $receiptTotals,
                Payment::whereBetween(
                    'payment_date',
                    [$start->format('Y-m-d'), $end->format('Y-m-d')]
                )
                    ->whereCompany($request->header('company'))
                    ->whereCustomer($customer->id)
                    ->sum('amount') ?? 0
            );
            array_push(
                $netProfits,
                ($receiptTotals[$i] - $expenseTotals[$i])
            );
            $i++;
            array_push($months, $start->format('M'));
            $monthCounter++;
            $end->startOfMonth();
            $start->addMonth()->startOfMonth();
            $end->addMonth()->endOfMonth();
        }

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

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

        $customer = User::with([
            'billingAddress',
            'shippingAddress',
            'billingAddress.country',
            'shippingAddress.country',
            'currency',
            'fields.customField'
        ])->find($customer->id);

        return response()->json([
            'customer' => $customer,
            'chartData' => $chartData,
        ]);
    }
}
