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Add dynamic OG image generation for rich iMessage/social previews

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Generates a branded 1200x630 PNG per event with title, date/time/location
using Go's image package and a custom bitmap font. Supports BBQ_BASE_URL
env var for absolute URLs required by link preview crawlers.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Ryan Chen
2026-05-16 15:50:24 -04:00
parent ef3aa3e9c3
commit 6a70135a5d
4 changed files with 241 additions and 5 deletions
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templates/event.html
+5 -1
View File
@@ -5,10 +5,14 @@
{{define "meta"}}
<meta property="og:title" content="{{.Event.Title}}">
<meta property="og:description" content="{{if .Event.Date}}{{.Event.Date}}{{end}}{{if .Event.Time}} at {{.Event.Time}}{{end}}{{if .Event.Location}} — {{.Event.Location}}{{end}} · {{.TotalGoing}} going">
<meta property="og:image" content="{{.BaseURL}}/e/{{.Event.Slug}}/og.png">
<meta property="og:image:width" content="1200">
<meta property="og:image:height" content="630">
<meta property="og:type" content="website">
<meta name="twitter:card" content="summary">
<meta name="twitter:card" content="summary_large_image">
<meta name="twitter:title" content="{{.Event.Title}}">
<meta name="twitter:description" content="{{if .Event.Date}}{{.Event.Date}}{{end}}{{if .Event.Time}} at {{.Event.Time}}{{end}}{{if .Event.Location}} — {{.Event.Location}}{{end}} · {{.TotalGoing}} going">
<meta name="twitter:image" content="{{.BaseURL}}/e/{{.Event.Slug}}/og.png">
{{end}}
{{define "admin-bar"}}{{if .IsAdmin}}<div class="admin-bar">ADMIN VIEW — share the guest link: /e/{{.Event.Slug}}</div>{{end}}{{end}}