[feature] Add extra opengraph meta tags (#4154)

# Description

> If this is a code change, please include a summary of what you've coded, and link to the issue(s) it closes/implements.
>
> If this is a documentation change, please briefly describe what you've changed and why.

Update our opengraph meta tag code stuff:

- Use `audio` and `video` types where appropriate.
- Include fall back to `image` types.
- Include `twitter:card=summary` or `twitter:card=summary_large_image` where appropriate (closes https://codeberg.org/superseriousbusiness/gotosocial/issues/2776)
- Include avatar description where possible.
- Include mime type for media.
- Set `modified_time` properly based on latest edit time.

Examples

Status with one image attachment, that's been edited:

```html
<meta property="og:locale" content="en">
<meta property="og:type" content="article">
<meta property="og:title" content="Post by Kip Van Den Bos, salad enjoyer, @tobi@goblin.technology">
<meta property="og:url" content="https://goblin.technology/@tobi/statuses/01JE3BQPNHWNHSNM0KS78X321Q">
<meta property="og:site_name" content="goblin.technology">
<meta property="og:description" content="cowards: &#34;I&#39;ll be a few minutes late, sorry!&#34; me:">
<meta property="og:article:publisher" content="https://goblin.technology/@tobi">
<meta property="og:article:author" content="https://goblin.technology/@tobi">
<meta property="og:article:modified_time" content="2025-04-22T07:24:49.773Z">
<meta property="og:article:published_time" content="2024-12-02T09:37:58.449Z">
<meta property="og:image" content="https://goblin.technology/fileserver/016T5Q3SQKBT337DAKVSKNXXW1/attachment/original/01JE3BPJ1TGMV6H6E8VY0ED5XA.png">
<meta property="og:image:type" content="image/png">
<meta property="og:image:width" content="1224">
<meta property="og:image:height" content="368">
<meta property="og:image:alt" content="Screenshot of a signal conversation where I wrote &#34;Just gonna smash out a quick poo&#34; and my friend responded with a sad face.">
<meta property="og:image" content="https://goblin.technology/fileserver/016T5Q3SQKBT337DAKVSKNXXW1/attachment/original/01J4YBM16ES6C1ENKZC8MC04BD.gif">
<meta property="og:image:type" content="image/gif">
<meta property="og:image:width" content="38">
<meta property="og:image:height" content="49">
<meta property="og:image:alt" content="Avatar for tobi: A 90&#39;s style gif of a black and white skull chattering happily.">
<meta property="og:image" content="https://goblin.technology/fileserver/01BPSX2MKCRVMD4YN4D71G9CP5/attachment/original/01J387PFPNKQWWNY9YQM67WA1T.gif">
<meta property="og:image:type" content="image/gif">
<meta property="og:image:alt" content="Little green peglin goblin bouncing happily.">
<meta name="twitter:card" content="summary_large_image">
<meta name="twitter:image" content="https://goblin.technology/fileserver/016T5Q3SQKBT337DAKVSKNXXW1/attachment/original/01JE3BPJ1TGMV6H6E8VY0ED5XA.png">
<meta name="twitter:image:alt" content="Screenshot of a signal conversation where I wrote &#34;Just gonna smash out a quick poo&#34; and my friend responded with a sad face.">
```

Status with one audio file (with thumbnail):

```html
<meta property="og:locale" content="en">
<meta property="og:type" content="article">
<meta property="og:title" content="Post by Kip Van Den Bos, salad enjoyer, @tobi@goblin.technology">
<meta property="og:url" content="https://goblin.technology/@tobi/statuses/01JSV5BQ585HB4R8NPK4ANTG91">
<meta property="og:site_name" content="goblin.technology">
<meta property="og:description" content="service top anthem imo">
<meta property="og:article:publisher" content="https://goblin.technology/@tobi">
<meta property="og:article:author" content="https://goblin.technology/@tobi">
<meta property="og:article:modified_time" content="2025-04-27T08:21:00.712Z">
<meta property="og:article:published_time" content="2025-04-27T08:21:00.712Z">
<meta property="og:audio" content="https://goblin.technology/fileserver/016T5Q3SQKBT337DAKVSKNXXW1/attachment/original/01JSV5AJ4RF3E6DATCSW8SAY93.mp3">
<meta property="og:audio:secure_url" content="https://goblin.technology/fileserver/016T5Q3SQKBT337DAKVSKNXXW1/attachment/original/01JSV5AJ4RF3E6DATCSW8SAY93.mp3">
<meta property="og:audio:type" content="audio/mpeg">
<meta property="og:audio:alt" content="Sanctified by Nine Inch Nails, from Pretty Hate Machine">
<meta property="og:image" content="https://goblin.technology/fileserver/016T5Q3SQKBT337DAKVSKNXXW1/attachment/small/01JSV5AJ4RF3E6DATCSW8SAY93.webp">
<meta property="og:image:type" content="image/webp">
<meta property="og:image:width" content="500">
<meta property="og:image:height" content="500">
<meta property="og:image:alt" content="Sanctified by Nine Inch Nails, from Pretty Hate Machine">
<meta property="og:image" content="https://goblin.technology/fileserver/016T5Q3SQKBT337DAKVSKNXXW1/attachment/original/01J4YBM16ES6C1ENKZC8MC04BD.gif">
<meta property="og:image:type" content="image/gif">
<meta property="og:image:width" content="38">
<meta property="og:image:height" content="49">
<meta property="og:image:alt" content="Avatar for tobi: A 90&#39;s style gif of a black and white skull chattering happily.">
<meta property="og:image" content="https://goblin.technology/fileserver/01BPSX2MKCRVMD4YN4D71G9CP5/attachment/original/01J387PFPNKQWWNY9YQM67WA1T.gif">
<meta property="og:image:type" content="image/gif">
<meta property="og:image:alt" content="Little green peglin goblin bouncing happily.">
<meta name="twitter:card" content="summary">
```

## Checklist

Please put an x inside each checkbox to indicate that you've read and followed it: `[ ]` -> `[x]`

If this is a documentation change, only the first checkbox must be filled (you can delete the others if you want).

- [x] I/we have read the [GoToSocial contribution guidelines](https://codeberg.org/superseriousbusiness/gotosocial/src/branch/main/CONTRIBUTING.md).
- [x] I/we have discussed the proposed changes already, either in an issue on the repository, or in the Matrix chat.
- [x] I/we have not leveraged AI to create the proposed changes.
- [x] I/we have performed a self-review of added code.
- [x] I/we have written code that is legible and maintainable by others.
- [x] I/we have commented the added code, particularly in hard-to-understand areas.
- [ ] I/we have made any necessary changes to documentation.
- [x] I/we have added tests that cover new code.
- [x] I/we have run tests and they pass locally with the changes.
- [x] I/we have run `go fmt ./...` and `golangci-lint run`.

Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4154
Reviewed-by: Daenney <daenney@noreply.codeberg.org>
Co-authored-by: tobi <tobi.smethurst@protonmail.com>
Co-committed-by: tobi <tobi.smethurst@protonmail.com>

1 files changed, 28 insertions, 8 deletions

diff --git a/web/template/page_ogmeta.tmpl b/web/template/page_ogmeta.tmpl
index 82bb4bbfb..8be10280d 100644
--- a/web/template/page_ogmeta.tmpl
+++ b/web/template/page_ogmeta.tmpl
@@ -25,14 +25,14 @@
 
 {{- with .ogMeta }}
 {{- if .Locale }}
-<meta name="og:locale" content="{{- .Locale -}}">
+<meta property="og:locale" content="{{- .Locale -}}">
 {{- else }}
 {{- end }}
 <meta property="og:type" content="{{- .Type -}}">
 <meta property="og:title" content="{{- demojify .Title | noescape -}}">
 <meta property="og:url" content="{{- .URL -}}">
 <meta property="og:site_name" content="{{- .SiteName -}}">
-<meta property="og:description" {{ demojify .Description | noescapeAttr -}}>
+<meta property="og:description" content="{{- demojify .Description | noescape -}}">
 {{- if .ArticlePublisher }}
 <meta property="og:article:publisher" content="{{ .ArticlePublisher }}">
 <meta property="og:article:author" content="{{ .ArticleAuthor }}">
@@ -44,14 +44,34 @@
 <meta property="og:profile:username" content="{{- .ProfileUsername -}}">
 {{- else }}
 {{- end }}
-<meta property="og:image" content="{{- .Image -}}">
-{{- if .ImageAlt }}
-<meta property="og:image:alt" content="{{- .ImageAlt -}}">
+{{- range $i, $m := .Media }}
+<meta property="og:{{- $m.OGType -}}" content="{{- $m.URL -}}">
+{{- if or (eq $m.OGType "video") (eq $m.OGType "audio") }}
+<meta property="og:{{- $m.OGType -}}:secure_url" content="{{- $m.URL -}}">
 {{- else }}
 {{- end }}
-{{- if .ImageWidth }}
-<meta property="og:image:width" content="{{ .ImageWidth }}">
-<meta property="og:image:height" content="{{ .ImageHeight }}">
+{{- if $m.MIMEType }}
+<meta property="og:{{- $m.OGType -}}:type" content="{{ $m.MIMEType }}">
 {{- else }}
 {{- end }}
+{{- if $m.Width }}
+<meta property="og:{{- $m.OGType -}}:width" content="{{ $m.Width }}">
+<meta property="og:{{- $m.OGType -}}:height" content="{{ $m.Height }}">
+{{- else }}
+{{- end }}
+{{- if $m.Alt }}
+<meta property="og:{{- $m.OGType -}}:alt" content="{{ $m.Alt }}">
+{{- else }}
+{{- end }}
+{{- end }}
+{{- if .TwitterSummaryLargeImage }}
+<meta name="twitter:card" content="summary_large_image">
+<meta name="twitter:image" content="{{- .TwitterSummaryLargeImage -}}">
+{{- if .TwitterImageAlt }}
+<meta name="twitter:image:alt" content="{{- .TwitterImageAlt -}}">
+{{- else }}
+{{- end }}
+{{- else }}
+<meta name="twitter:card" content="summary">
+{{- end }}
 {{- end }}
\ No newline at end of file