<?php

namespace Tests\Unit;

use App\Models\Business\CourierAgreementSignature;
use App\Support\CourierAgreementPdf;
use DOMElement;
use Illuminate\Foundation\Testing\TestCase;
use Tests\CreatesApplication;

class CourierAgreementSignatureLayoutTest extends TestCase
{
    use CreatesApplication;

    public function test_cooperation_signature_page_fits_two_seals_and_separate_handwritten_signatures(): void
    {
        [$frames, $pageCount] = $this->renderLayout('cooperation-contract');
        $seals = array_values(array_filter($frames, fn ($frame) => $frame['class'] === 'contract-signatures__blank'));
        $handwriting = array_values(array_filter($frames, fn ($frame) => $frame['class'] === 'contract-signatures__handwriting'));

        $this->assertCount(2, $seals);
        $this->assertCount(2, $handwriting);
        $this->assertGreaterThan(1, $pageCount);
        foreach ($seals as $index => $seal) {
            $this->assertGreaterThanOrEqual(159, $seal['width']);
            $this->assertGreaterThanOrEqual(159, $seal['height']);
            $this->assertSame($pageCount, $seal['page']);
            $this->assertGreaterThanOrEqual(75, $handwriting[$index]['height']);
            $this->assertGreaterThanOrEqual($seal['y'] + $seal['height'], $handwriting[$index]['y']);
        }
        $this->assertLessThanOrEqual($seals[1]['x'], $seals[0]['x'] + $seals[0]['width']);
        foreach ($frames as $frame) {
            $this->assertSame($pageCount, $frame['page'], 'Both parties and their dates must stay on the signature page.');
            $this->assertLessThan(806, $frame['y'] + $frame['height']);
        }
    }

    public function test_other_agreements_keep_full_size_seal_spaces_and_dates_together(): void
    {
        foreach (['account-proof', 'account-change', 'entity-change', 'shared-contract', 'authorization'] as $type) {
            [$frames, $pageCount] = $this->renderLayout($type);
            $seals = array_values(array_filter($frames, fn ($frame) => $frame['class'] === 'sign-grid__blank'));
            $this->assertCount(in_array($type, ['entity-change', 'authorization'], true) ? 2 : 1, $seals);
            foreach ($seals as $seal) {
                $this->assertGreaterThanOrEqual(159, $seal['width'], $type);
                $this->assertGreaterThanOrEqual(159, $seal['height'], $type);
            }
            foreach ($frames as $frame) {
                $this->assertSame($pageCount, $frame['page'], "$type signature spaces and dates must stay together.");
                $this->assertLessThan(806, $frame['y'] + $frame['height'], $type);
            }
        }
    }

    private function renderLayout(string $type): array
    {
        $payload = [
            'company_full_name' => '示例甲方公司', 'signature_date' => '2026-10-11',
            'account_proof_effective_date' => '2026-10-11',
            'account_proof_account_name' => '示例合作公司', 'account_proof_bank_name' => '示例银行',
            'account_proof_bank_account' => '0000000000000000',
            'account_change_date' => '2026-10-11', 'old_account_name' => '原收款人',
            'old_account_number' => '0000000000000000', 'old_account_stop_date' => '2026-10-11',
            'new_account_effective_date' => '2026-10-11', 'new_account_name' => '新收款人',
            'new_bank_name' => '示例银行', 'new_bank_account' => '0000000000000000',
            'former_company_name' => '示例原公司', 'former_legal_representative' => '原法人',
            'entity_change_date' => '2026-10-11', 'changed_company_name' => '示例新公司',
            'changed_company_start_date' => '2026-10-11', 'secondary_operator_name' => '新法人',
            'contract_partner_name' => '示例合作公司', 'shared_courier_names' => ['示例快递'],
            'cooperation_party_a_name' => '示例甲方公司', 'cooperation_party_a_phone' => '00000000000',
            'cooperation_party_b_name' => '示例乙方公司', 'cooperation_party_b_phone' => '00000000000',
            'cooperation_start_date' => '2026-10-11', 'cooperation_end_date' => '2027-10-10',
            'principal_name' => '示例委托方', 'principal_id_number' => 'EXAMPLE-ID',
            'trustee_name' => '示例受托方', 'trustee_id_number' => 'EXAMPLE-ID',
            'authorization_items' => ['1', '2', '3', '4'], 'bill_counterparty' => '示例对账方',
            'loan_counterparty' => '示例借支方', 'payment_counterparty' => '示例付款方',
            'authorization_start_date' => '2026-10-11', 'authorization_end_date' => '2027-10-10',
        ];
        $signature = new CourierAgreementSignature([
            'business_no' => 'AGR-LAYOUT-TEST', 'template_code' => CourierAgreementSignature::DOCUMENTS[$type]['code'],
            'document_type' => $type, 'payload' => $payload,
        ]);
        $frames = [];
        $pdf = app('dompdf.wrapper');
        $this->app->instance('dompdf.wrapper', $pdf);
        $pdf->getDomPDF()->setCallbacks([[
            'event' => 'end_frame',
            'f' => function ($frame) use (&$frames, $pdf): void {
                $node = $frame->get_node();
                if (! $node instanceof DOMElement || ! preg_match('/(?:blank|handwriting|sign-grid__line|contract-signatures__title|contract-signatures__line)/', $node->getAttribute('class'))) {
                    return;
                }
                $position = $frame->get_position();
                $frames[] = [
                    'class' => $node->getAttribute('class'),
                    'page' => $pdf->getDomPDF()->getCanvas()->get_page_number(),
                    'x' => $position['x'], 'y' => $position['y'],
                    'width' => $frame->get_margin_width(), 'height' => $frame->get_margin_height(),
                ];
            },
        ]]);
        app(CourierAgreementPdf::class)->render($signature);
        $this->app->forgetInstance('dompdf.wrapper');

        return [$frames, $pdf->getDomPDF()->getCanvas()->get_page_count()];
    }
}