Initial baseline: LaraBlog core with plugin commerce surface.
Captures the current working tree after theme slots, ArticleAccess, and the payment / paid-content plugins so subsequent work has a reviewable git history.
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<?php
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declare(strict_types=1);
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namespace App\Domain\Blog;
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use App\Models\Attachment;
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use Illuminate\Support\Facades\Cache;
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/**
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* Attachment embeds:
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* - Legacy HTML: [attach=123] or src/href="[attach=123]"
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* - Markdown-safe:  or [label](attach:123)
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*
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* DB stores references only; URLs are resolved at render/preview time.
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*/
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class AttachEmbed
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{
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public const LEGACY_PATTERN = '/\[attach=(\d+)\]/i';
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public const MD_PROTOCOL = 'attach:';
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public function legacyToMarkdownReference(string $content, ?int $articleId = null): string
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{
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return preg_replace_callback(self::LEGACY_PATTERN, function (array $matches) use ($articleId): string {
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$id = (int) $matches[1];
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$attachment = $this->findAttachment($id, $articleId);
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$name = $attachment?->filename ?: "attachment-{$id}";
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$alt = pathinfo($name, PATHINFO_FILENAME) ?: $name;
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if ($attachment && $this->isImage($attachment)) {
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return '';
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}
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return '['.$this->escapeMdLabel($name).']('.self::MD_PROTOCOL.$id.')';
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}, $content) ?? $content;
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}
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/**
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* Protect sablog attach tokens before HTML→Markdown conversion.
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* Tokens avoid underscores so html-to-markdown won't escape them.
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*
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* @return array{0: string, 1: array<string, array{id:int, kind:string, role:string}>}
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*/
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public function protectLegacyTokensForHtmlConversion(string $html, ?int $articleId = null): array
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{
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$map = [];
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// Attribute values become markdown link/image destinations → restore as attach:ID only.
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$html = preg_replace_callback(
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'/\b(src|href)=([\'"])\[attach=(\d+)\]\2/i',
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function (array $matches) use (&$map, $articleId): string {
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$id = (int) $matches[3];
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$role = 'dest';
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$kind = strtolower($matches[1]) === 'src' ? 'image' : 'file';
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$token = 'LBATTACHDEST'.$id.'X';
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$map[$token] = ['id' => $id, 'kind' => $kind, 'role' => $role, 'article_id' => $articleId];
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return $matches[1].'='.$matches[2].$token.$matches[2];
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},
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$html
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) ?? $html;
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// Bare tokens become full markdown embeds after conversion.
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$html = preg_replace_callback(self::LEGACY_PATTERN, function (array $matches) use (&$map, $articleId): string {
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$id = (int) $matches[1];
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$attachment = $this->findAttachment($id, $articleId);
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$kind = ($attachment && $this->isImage($attachment)) ? 'image' : 'file';
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$token = 'LBATTACHBARE'.$id.'X';
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$map[$token] = ['id' => $id, 'kind' => $kind, 'role' => 'bare', 'article_id' => $articleId];
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return $token;
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}, $html) ?? $html;
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return [$html, $map];
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}
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/**
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* @param array<string, array{id:int, kind:string, role:string}> $map
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*/
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public function restoreProtectedTokensToMarkdown(string $markdown, array $map): string
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{
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foreach ($map as $token => $meta) {
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$id = (int) $meta['id'];
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if (($meta['role'] ?? '') === 'dest') {
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$markdown = str_replace($token, self::MD_PROTOCOL.$id, $markdown);
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continue;
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}
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$attachment = $this->findAttachment($id, $meta['article_id'] ?? null);
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$name = $attachment?->filename ?: "attachment-{$id}";
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$alt = pathinfo($name, PATHINFO_FILENAME) ?: $name;
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$replacement = ($meta['kind'] ?? 'file') === 'image'
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? ''
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: '['.$this->escapeMdLabel($name).']('.self::MD_PROTOCOL.$id.')';
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$markdown = str_replace($token, $replacement, $markdown);
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}
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return $markdown;
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}
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/**
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* Render-time only: turn attach:123 into /attachment.php?id=123 for CommonMark.
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*/
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public function expandMarkdownAttachProtocol(string $markdown): string
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{
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return preg_replace_callback(
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'/\]\(attach:(\d+)\)/i',
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fn (array $matches): string => ']('.$this->publicEntryUrl((int) $matches[1]).')',
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$markdown
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) ?? $markdown;
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}
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public function hydrateHtml(string $html, ?int $articleId = null): string
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{
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// 1) Attribute form: src/href="[attach=N]" (must run before bare token replace)
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$html = preg_replace_callback(
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'/\b(src|href)=([\'"])\[attach=(\d+)\]\2/i',
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function (array $matches): string {
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$attr = strtolower($matches[1]);
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$quote = $matches[2];
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$id = (int) $matches[3];
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return $attr.'='.$quote.$this->publicEntryUrl($id).$quote;
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},
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$html
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) ?? $html;
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// 2) Safety net for attach: protocol left in HTML attributes
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$html = preg_replace_callback(
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'/\b(href|src)=([\'"])attach:(\d+)\2/i',
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function (array $matches): string {
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$attr = strtolower($matches[1]);
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$quote = $matches[2];
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$id = (int) $matches[3];
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return $attr.'='.$quote.$this->publicEntryUrl($id).$quote;
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},
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$html
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) ?? $html;
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// 3) Bare legacy [attach=id] tokens
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$html = preg_replace_callback(self::LEGACY_PATTERN, function (array $matches) use ($articleId): string {
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$id = (int) $matches[1];
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$attachment = $this->findAttachment($id, $articleId);
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$url = $this->publicEntryUrl($id);
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if ($attachment && $this->isImage($attachment)) {
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$alt = e(pathinfo($attachment->filename, PATHINFO_FILENAME) ?: $attachment->filename);
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return '<img src="'.e($url).'" alt="'.$alt.'" />';
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}
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$label = e($attachment?->filename ?: "attachment-{$id}");
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return '<a href="'.e($url).'">'.$label.'</a>';
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}, $html) ?? $html;
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return $html;
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}
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public function publicEntryUrl(int $attachmentId): string
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{
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return url('/attachment.php?id='.$attachmentId);
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}
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protected function findAttachment(int $id, ?int $articleId = null): ?Attachment
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{
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try {
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return Cache::remember("attach-embed:{$id}", 60, function () use ($id) {
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return Attachment::query()->find($id);
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});
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} catch (\Throwable) {
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return null;
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}
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}
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protected function isImage(Attachment $attachment): bool
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{
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if (is_string($attachment->mime) && str_starts_with($attachment->mime, 'image/')) {
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return true;
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}
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$ext = strtolower(pathinfo($attachment->filename, PATHINFO_EXTENSION));
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return in_array($ext, ['jpg', 'jpeg', 'png', 'gif', 'webp', 'bmp', 'svg'], true);
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}
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protected function escapeMdLabel(string $label): string
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{
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return str_replace(['[', ']', '!'], ['\\[', '\\]', '\\!'], $label);
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}
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}
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