<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Models\Incoming;
use App\Models\Invoice;
use App\Models\Payment;
use Illuminate\Database\Eloquent\Collection;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use PhpOffice\PhpSpreadsheet\Shared\Date;
use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Style\Alignment;
use PhpOffice\PhpSpreadsheet\Style\Border;
use PhpOffice\PhpSpreadsheet\Style\NumberFormat\Wizard\Currency;
use PhpOffice\PhpSpreadsheet\Style\NumberFormat\Wizard\CurrencyBase;
use PhpOffice\PhpSpreadsheet\Style\NumberFormat\Wizard\Number;
use PhpOffice\PhpSpreadsheet\Worksheet\PageSetup;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;


class ExcelController extends Controller
{
    protected string $from;
    protected string $end;
    protected Xlsx $writer;

    protected CurrencyBase $currencyMask;

    public function export(Request $request): JsonResponse
    {
        $requestData = $request->validate([
            'from' => 'required|date',
            'end' => 'required|date',
            'report' => 'required|in:invoice,payment,incoming,outgoing',
        ]);

        $this->from = $requestData['from'];
        $this->end = $requestData['end'];
        $this->currencyMask = new Currency(
            '€',
            2,
            Number::WITH_THOUSANDS_SEPARATOR,
            Currency::TRAILING_SYMBOL,
            Currency::SYMBOL_WITH_SPACING
        );

        switch ($requestData['report']) {
            case 'invoice':
                $this->invoice();
                break;
            case 'payment':
                $this->payment();
                break;
            case 'incoming':
                $this->incoming();
                break;
            case 'outgoing':
                $this->outgoing();
                break;
        }

        return response()->json($this->writer->save('php://output'));
    }

    protected function invoice(): void
    {
        $from = $this->from . ' 00:00:00';
        $end = $this->end . ' 23:59:59';
        $net = [];
        $tax = [];
        $gross = [];

        $invoices = Invoice::whereBetween('created_at', [$from, $end])->where('status', '!=', 'created')->with(['address', 'customer'])->orderBy('created_at', 'desc')->get();
        $spreadsheet = new Spreadsheet();
        $worksheet = $spreadsheet->getActiveSheet();
        $worksheet->setTitle(__('invoice.Invoices'));
        $worksheet->getPageSetup()->setOrientation(PageSetup::ORIENTATION_LANDSCAPE);
        $worksheet->getHeaderFooter()->setEvenHeader(__('invoice.Invoices from to', ['from' => $this->from, 'end' => $this->end]));
        $worksheet->getHeaderFooter()->setOddHeader(__('invoice.Invoices from to', ['from' => $this->from, 'end' => $this->end]));

        $worksheet->setCellValue('A1', __('invoice.Invoice Number'));
        $worksheet->setCellValue('B1', __('customer.Customer'));
        $worksheet->setCellValue('C1', __('common.Name'));
        $worksheet->setCellValue('D1', __('invoice.Net'));
        $worksheet->setCellValue('E1', __('invoice.Tax'));
        $worksheet->setCellValue('F1', __('invoice.Gross'));
        $worksheet->setCellValue('G1', __('common.Created at'));
        $worksheet->getStyle('A1:G1')->getBorders()->getBottom()->applyFromArray(['borderStyle' => Border::BORDER_DOUBLE]);
        $worksheet->getStyle('A1:G1')->getFont()->setBold(true);
        $worksheet->getStyle('D1:G1')->getAlignment()->applyFromArray(['horizontal' => Alignment::HORIZONTAL_RIGHT]);

        $row = 2;
        foreach ($invoices as $invoice) {
            foreach ($invoice->items as $item) {
                if (!isset($net[$item->tax])) {
                    $net[$item->tax] = 0;
                    $tax[$item->tax] = 0;
                    $gross[$item->tax] = 0;
                }
                $net[$item->tax] += $item->amount * $item->price;
                $tax[$item->tax] += $item->amount * $item->price * $item->tax / 100;
                $gross[$item->tax] += $item->total;
            }
            $worksheet->setCellValue('A' . $row, $invoice->number);
            $worksheet->setCellValue('B' . $row, $invoice->customer->name);
            $worksheet->setCellValue('C' . $row, $invoice->address->name);
            $worksheet->getCell('D' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('D' . $row, $invoice->sum - $invoice->tax);
            $worksheet->getCell('E' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('E' . $row, $invoice->tax);
            $worksheet->getCell('F' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('F' . $row, $invoice->sum);
            $worksheet->setCellValue('G' . $row, Date::PHPToExcel(\DateTime::createFromFormat('!d.m.Y', $invoice->created)));
            $worksheet->getCell('G' . $row)->getStyle()->getNumberFormat()->setFormatCode('dd.mm.yyyy');
            $row++;
        }

        $worksheet->getStyle('A' . $row - 1 . ':G' . $row - 1)->getBorders()->getBottom()->applyFromArray(['borderStyle' => Border::BORDER_DOUBLE]);

        foreach ($net as $tax_value => $amount) {
            $worksheet->getStyle('A' . $row . ':G' . $row)->getFont()->setBold(true);
            $worksheet->getStyle('D' . $row . ':G' . $row)->getAlignment()->applyFromArray(['horizontal' => Alignment::HORIZONTAL_RIGHT]);
            $worksheet->setCellValue('B' . $row, __('invoice.Sails from vat', ['tax' => \Illuminate\Support\Number::percentage($tax_value)]));
            $worksheet->getCell('D' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('D' . $row, $amount);
            $worksheet->getCell('E' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('E' . $row, $tax[$tax_value]);
            $worksheet->getCell('F' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('F' . $row, $gross[$tax_value]);

            $row++;
        }

        foreach ($worksheet->getColumnIterator() as $column) {
            $worksheet->getColumnDimension($column->getColumnIndex())->setAutoSize(true);
        }

        $this->writer = new Xlsx($spreadsheet);
    }

    protected function payment(): void
    {
        $net = [];
        $tax = [];
        $gross = [];

        $payments = Payment::whereBetween('payment_date', [$this->from, $this->end])->with(['invoice'])->orderBy('payment_date', 'desc')->get();
        $spreadsheet = new Spreadsheet();
        $worksheet = $spreadsheet->getActiveSheet();
        $worksheet->setTitle(__('invoice.Payments'));
        $worksheet->getPageSetup()->setOrientation(PageSetup::ORIENTATION_LANDSCAPE);
        $worksheet->getHeaderFooter()->setEvenHeader(__('invoice.Payments from to', ['from' => $this->from, 'end' => $this->end]));
        $worksheet->getHeaderFooter()->setOddHeader(__('invoice.Payments from to', ['from' => $this->from, 'end' => $this->end]));

        $worksheet->setCellValue('A1', __('invoice.Invoice Number'));
        $worksheet->setCellValue('B1', __('customer.Customer'));
        $worksheet->setCellValue('C1', __('common.Name'));
        $worksheet->setCellValue('D1', __('invoice.Net'));
        $worksheet->setCellValue('E1', __('invoice.Tax'));
        $worksheet->setCellValue('F1', __('invoice.Gross'));
        $worksheet->setCellValue('G1', __('invoice.Paid at'));
        $worksheet->getStyle('A1:G1')->getBorders()->getBottom()->applyFromArray(['borderStyle' => Border::BORDER_DOUBLE]);
        $worksheet->getStyle('A1:G1')->getFont()->setBold(true);
        $worksheet->getStyle('D1:G1')->getAlignment()->applyFromArray(['horizontal' => Alignment::HORIZONTAL_RIGHT]);

        $row = 2;
        foreach ($payments as $payment) {
            $invoice = $payment->invoice;

            foreach ($invoice->items as $item) {
                if (!isset($net[$item->tax])) {
                    $net[$item->tax] = 0;
                    $tax[$item->tax] = 0;
                    $gross[$item->tax] = 0;
                }
                if ($invoice->sum == 0) {
                    continue;
                }
                $net[$item->tax] += $item->amount * $item->price * $payment->paid_amount / $invoice->sum;
                $tax[$item->tax] += $item->amount * $item->price * $item->tax * $payment->paid_amount / ($invoice->sum * 100);
                $gross[$item->tax] += $item->total * $payment->paid_amount / ($invoice->sum);
            }

            $worksheet->setCellValue('A' . $row, $invoice->number);
            $worksheet->setCellValue('B' . $row, $invoice->customer->name);
            $worksheet->setCellValue('C' . $row, $invoice->address->name);
            $worksheet->getCell('D' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('D' . $row, ($invoice->sum != 0 && $payment->paid_amount != 0) ? (($invoice->sum - $invoice->tax) / ($invoice->sum / $payment->paid_amount)) : 0);
            $worksheet->getCell('E' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('E' . $row, ($invoice->sum != 0 && $payment->paid_amount != 0) ? ($invoice->tax / ($invoice->sum / $payment->paid_amount)) : 0);
            $worksheet->getCell('F' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('F' . $row, $payment->paid_amount);
            $worksheet->setCellValue('G' . $row, Date::PHPToExcel(\DateTime::createFromFormat('!Y-m-d', $payment->payment_date)));
            $worksheet->getCell('G' . $row)->getStyle()->getNumberFormat()->setFormatCode('dd.mm.yyyy');
            $row++;
        }

        $worksheet->getStyle('A' . $row - 1 . ':G' . $row - 1)->getBorders()->getBottom()->applyFromArray(['borderStyle' => Border::BORDER_DOUBLE]);

        foreach ($net as $tax_value => $amount) {
            $worksheet->getStyle('A' . $row . ':G' . $row)->getFont()->setBold(true);
            $worksheet->getStyle('D' . $row . ':G' . $row)->getAlignment()->applyFromArray(['horizontal' => Alignment::HORIZONTAL_RIGHT]);
            $worksheet->setCellValue('B' . $row, __('invoice.Sails from vat', ['tax' => \Illuminate\Support\Number::percentage($tax_value)]));
            $worksheet->getCell('D' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('D' . $row, $amount);
            $worksheet->getCell('E' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('E' . $row, $tax[$tax_value]);
            $worksheet->getCell('F' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('F' . $row, $gross[$tax_value]);

            $row++;
        }

        foreach ($worksheet->getColumnIterator() as $column) {
            $worksheet->getColumnDimension($column->getColumnIndex())->setAutoSize(true);
        }

        $this->writer = new Xlsx($spreadsheet);
    }

    protected function incoming(): void
    {
        $incoming = Incoming::whereBetween('issue_date', [$this->from, $this->end])->with(['supplier', 'taxes'])->orderBy('issue_date', 'desc')->get();
        $this->incomingToSheet($incoming);
    }

    protected function outgoing(): void
    {
        $incoming = Incoming::whereBetween('pay_date', [$this->from, $this->end])->with(['supplier', 'taxes'])->orderBy('pay_date', 'desc')->get();
        $this->incomingToSheet($incoming);
    }

    protected function incomingToSheet(Collection $incoming): void
    {
        $net = [];
        $tax = [];
        $gross = [];

        $spreadsheet = new Spreadsheet();
        $worksheet = $spreadsheet->getActiveSheet();
        $worksheet->setTitle(__('incoming.Incoming'));
        $worksheet->getPageSetup()->setOrientation(PageSetup::ORIENTATION_LANDSCAPE);
        $worksheet->getHeaderFooter()->setEvenHeader(__('incoming.Invoices from to', ['from' => $this->from, 'end' => $this->end]));
        $worksheet->getHeaderFooter()->setOddHeader(__('incoming.Invoices from to', ['from' => $this->from, 'end' => $this->end]));

        $worksheet->setCellValue('A1', __('invoice.Invoice Number'));
        $worksheet->setCellValue('B1', __('customer.Customer'));
        $worksheet->setCellValue('C1', __('common.Name'));
        $worksheet->setCellValue('D1', __('invoice.Net'));
        $worksheet->setCellValue('E1', __('invoice.Tax'));
        $worksheet->setCellValue('F1', __('invoice.Gross'));
        $worksheet->setCellValue('G1', __('common.Created at'));
        $worksheet->setCellValue('H1', __('common.Paid at'));
        $worksheet->getStyle('A1:H1')->getBorders()->getBottom()->applyFromArray(['borderStyle' => Border::BORDER_DOUBLE]);
        $worksheet->getStyle('A1:H1')->getFont()->setBold(true);
        $worksheet->getStyle('D1:H1')->getAlignment()->applyFromArray(['horizontal' => Alignment::HORIZONTAL_RIGHT]);

        $row = 2;
        foreach ($incoming as $invoice) {
            foreach ($invoice->taxes as $item) {
                if (!isset($net[$item->percentage])) {
                    $net[$item->percentage] = 0;
                    $tax[$item->percentage] = 0;
                    $gross[$item->percentage] = 0;
                }
                $net[$item->percentage] += $item->taxable_amount;
                $tax[$item->percentage] += $item->amount;
                $gross[$item->percentage] += $item->taxable_amount + $item->amount;
            }
            $worksheet->setCellValue('A' . $row, $invoice->invoice_number);
            $worksheet->setCellValue('B' . $row, $invoice->supplier->name);
            $worksheet->setCellValue('C' . $row, $invoice->supplier->email);
            $worksheet->getCell('D' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('D' . $row, $invoice->net);
            $worksheet->getCell('E' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('E' . $row, $invoice->tax);
            $worksheet->getCell('F' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('F' . $row, $invoice->gross);
            $worksheet->setCellValue('G' . $row, Date::PHPToExcel(\DateTime::createFromFormat('!Y-m-d', $invoice->issue_date)));
            $worksheet->getCell('G' . $row)->getStyle()->getNumberFormat()->setFormatCode('dd.mm.yyyy');
            if (is_null($invoice->pay_date)) {
                $worksheet->setCellValue('H' . $row, '');
            } else {
                $worksheet->setCellValue('H' . $row, Date::PHPToExcel(\DateTime::createFromFormat('!Y-m-d', $invoice->pay_date)));
            }
            $worksheet->getCell('H' . $row)->getStyle()->getNumberFormat()->setFormatCode('dd.mm.yyyy');
            $row++;
        }

        $worksheet->getStyle('A' . $row - 1 . ':H' . $row - 1)->getBorders()->getBottom()->applyFromArray(['borderStyle' => Border::BORDER_DOUBLE]);

        foreach ($net as $tax_value => $amount) {
            $worksheet->getStyle('A' . $row . ':G' . $row)->getFont()->setBold(true);
            $worksheet->getStyle('D' . $row . ':G' . $row)->getAlignment()->applyFromArray(['horizontal' => Alignment::HORIZONTAL_RIGHT]);
            $worksheet->setCellValue('B' . $row, __('invoice.Sails from vat', ['tax' => \Illuminate\Support\Number::percentage($tax_value)]));
            $worksheet->getCell('D' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('D' . $row, $amount);
            $worksheet->getCell('E' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('E' . $row, $tax[$tax_value]);
            $worksheet->getCell('F' . $row)->getStyle()->getNumberFormat()->setFormatCode($this->currencyMask);
            $worksheet->setCellValue('F' . $row, $gross[$tax_value]);

            $row++;
        }

        foreach ($worksheet->getColumnIterator() as $column) {
            $worksheet->getColumnDimension($column->getColumnIndex())->setAutoSize(true);
        }

        $this->writer = new Xlsx($spreadsheet);
    }
}