<?php

namespace Tests\Unit;

use App\Models\Business\CourierQuoteVersion;
use DOMElement;
use Dompdf\FrameDecorator\Text;
use FontLib\Font;
use Illuminate\Foundation\Testing\TestCase;
use Tests\CreatesApplication;

class CourierQuotePdfWhitespaceTest extends TestCase
{
    use CreatesApplication;

    public function test_pasted_quote_rules_render_without_missing_glyphs_and_keep_separate_lines(): void
    {
        $html = view('business.pdf.courier-quote', [
            'version' => new CourierQuoteVersion([
                'version_code' => 'QB-TEST', 'carrier_name' => '示例快递',
                'quote_type' => '普通报价', 'effective_date' => '2026-11-01',
            ]),
            'change' => null,
            'values' => [['地区', '费用'], ['江苏', '6.50']],
            'formulas' => [],
            'partyA' => '示例甲方', 'expiryDate' => '长期',
            'faceFee' => '0.50', 'bubbleCoefficient' => '1.2',
            'billingRules' => "1、\u{00A0}计费重 > 0.5kg，费用6.50元。\t\t\t\r\n2、\u{00A0}轻抛比1：10000。\t\t\t\r3、保留末行。",
            'signatureDate' => '2026年11月7日', 'generatedAt' => now(),
            'fontPath' => str_replace('\\', '/', resource_path('fonts/DroidSansFallback.ttf')),
        ])->render();

        $pdf = app('dompdf.wrapper');
        $frames = [];
        $pdf->getDomPDF()->setCallbacks([[
            'event' => 'end_frame',
            'f' => static function ($frame) use (&$frames): void {
                if (! $frame instanceof Text) {
                    return;
                }

                $isSummary = false;
                for ($node = $frame->get_node()->parentNode; $node; $node = $node->parentNode) {
                    if ($node instanceof DOMElement && $node->getAttribute('class') === 'summary') {
                        $isSummary = true;
                        break;
                    }
                }
                $frames[] = [
                    'text' => $frame->get_text(),
                    'font' => $frame->get_style()->font_family,
                    'y' => $frame->get_position()['y'],
                    'summary' => $isSummary,
                ];
            },
        ]]);
        $pdf->setPaper('a4', 'landscape');
        $pdf->loadHTML($html, 'UTF-8');
        $this->assertStringStartsWith('%PDF-', $pdf->output());
        $this->assertNotEmpty($frames);

        $characterMaps = [];
        foreach ($frames as $frame) {
            if (! isset($characterMaps[$frame['font']])) {
                $font = Font::load($frame['font'] . '.ttf');
                $font->parse();
                $characterMaps[$frame['font']] = $font->getUnicodeCharMap();
                $font->close();
            }
            foreach (mb_str_split($frame['text']) as $character) {
                if ($character === "\n" || $character === "\r") {
                    continue;
                }
                $codepoint = mb_ord($character);
                $this->assertNotEmpty(
                    $characterMaps[$frame['font']][$codepoint] ?? null,
                    sprintf('Quote PDF would display a missing glyph for U+%04X.', $codepoint)
                );
            }
        }

        $ruleFrames = array_values(array_filter($frames, fn ($frame) => $frame['summary']));
        $renderedText = implode('', array_column($ruleFrames, 'text'));
        $this->assertStringContainsString('计费重 > 0.5kg，费用6.50元。', $renderedText);
        $this->assertStringContainsString('轻抛比1：10000。', $renderedText);
        $this->assertStringContainsString('保留末行。', $renderedText);
        $lineY = [];
        foreach ($ruleFrames as $frame) {
            foreach (['1', '2', '3'] as $number) {
                if (str_starts_with($frame['text'], $number)) {
                    $lineY[$number] ??= $frame['y'];
                }
            }
        }
        $this->assertCount(3, $lineY);
        $this->assertGreaterThan($lineY['1'], $lineY['2']);
        $this->assertGreaterThan($lineY['2'], $lineY['3']);
    }
}