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Add Open Graph/title meta tags to viewer index.html #81

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Add Open Graph/title meta tags to viewer index.html #81

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24 changes: 22 additions & 2 deletions .github/workflows/validate-and-process.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -289,15 +289,35 @@ jobs:
if [[ "${BASE_URL}" =~ [^/]$ ]]; then
BASE_URL="${BASE_URL}/"
fi


# Pull register name/description for the viewer shell's <title> and Open Graph
# meta tags, so link preview cards (which don't execute the SPA's JS) show
# something more specific than a generic hardcoded title.
REG_NAME="$(jq -r '.name // "OGC Building Blocks"' < "$REGISTER_FILE")"
REG_DESCRIPTION="$(jq -r '.description // .abstract // ""' < "$REGISTER_FILE")"
html_escape() {
sed -e 's/&/\&amp;/g' -e 's/</\&lt;/g' -e 's/>/\&gt;/g' -e 's/"/\&quot;/g'
}
REG_NAME_HTML="$(printf '%s' "$REG_NAME" | html_escape)"
REG_DESCRIPTION_HTML="$(printf '%s' "$REG_DESCRIPTION" | html_escape)"
PAGE_URL="${{ steps.get-pages-url.outputs.result }}/${BASE_URL}"

cat << EOF > index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<link rel="icon" href="https://ogcincubator.github.io/bblocks-viewer/favicon.ico" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>OGC Location Building Blocks</title>
<title>${REG_NAME_HTML}</title>
<meta name="description" content="${REG_DESCRIPTION_HTML}" />
<meta property="og:type" content="website" />
<meta property="og:title" content="${REG_NAME_HTML}" />
<meta property="og:description" content="${REG_DESCRIPTION_HTML}" />
<meta property="og:url" content="${PAGE_URL}" />
<meta name="twitter:card" content="summary" />
<meta name="twitter:title" content="${REG_NAME_HTML}" />
<meta name="twitter:description" content="${REG_DESCRIPTION_HTML}" />
<script src="${{ steps.get-pages-url.outputs.result }}/${BASE_URL}config.js"></script>
<script type="module" crossorigin src="https://ogcincubator.github.io/bblocks-viewer/assets/index.js"></script>
<link rel="stylesheet" href="https://ogcincubator.github.io/bblocks-viewer/assets/index.css">
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