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shell.nix
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shell.nix
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{ pkgs ? import <nixpkgs> { } }:
pkgs.mkShell {
buildInputs = [
(pkgs.writers.writeDashBin "build-website" ''
set -eu
about=$(mktemp)
eventTemplate=$(mktemp)
githubHandles=$(mktemp)
nextEventTemplate=$(mktemp)
clean() {
rm -f "$about"
rm -f "$eventTemplate"
rm -f "$githubHandles"
rm -f "$nextEventTemplate"
}
trap clean EXIT INT TERM
out="${toString ./.}"/public
rm -rf "$out"
mkdir -p "$out"
events=$(
find "${toString ./.}"/events -name '*.md' -exec basename '{}' .md \; \
| sort
)
nextEvent=""
pastEvents=
futureEvents=
now=$(date -d $(date +%Y-%m-%d) +%s)
for event in $events; do
if test $(date -d $event +%s) -ge $now; then
if test -z $nextEvent; then
nextEvent="$event"
else
futureEvents="$futureEvents $event"
fi
else
pastEvents="$pastEvents $event"
fi
done
viewAbout() {
cat README.md | ${pkgs.pandoc}/bin/pandoc -f markdown -t html
}
cat >"$nextEventTemplate" <<'EOF'
<h2>
<span>
Next Session:
</span>
<small>
$date$ @ $time$ CET/CEST
</small>
</h2>
EOF
viewNextSession() {
${pkgs.pandoc}/bin/pandoc -f markdown -t html \
--template "$nextEventTemplate" \
-V date=$1 \
"${toString ./.}"/events/$1.md
}
cat >"$eventTemplate" <<'EOF'
<article>
<h3>
<small>
$date$, $time$ CET/CEST
</small>
<span>
$title$
</span>
</h3>
$body$
</article>
EOF
replaceGithubHandles() {
cat > "$githubHandles"
{
cat <<EOF
Alexander aforemny
Fabian kirchner
Günter guenterjantzen
Marvin CrazyMarvin
Michael Viir
Peter PeterZilz
EOF
} | \
while read -r firstName username; do
sed -i "s,@$firstName\b,[$firstName](https://github.com/$username),g" "$githubHandles"
done
cat "$githubHandles"
}
viewEvent() {
cat "${toString ./.}"/events/$1.md | \
replaceGithubHandles | \
${pkgs.pandoc}/bin/pandoc -f markdown -t html \
--template "$eventTemplate" \
-V date="$(date -d $1 '+%a, %b %-d')"
}
viewEvents() {
for event in "$@"; do
viewEvent $event
done
}
cat > public/index.html <<EOF
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,100;0,300;0,400;0,500;0,700;0,900;1,100;1,300;1,400;1,500;1,700;1,900&display=swap" rel="stylesheet">
<style type="text/css">
html {
font-family: "Roboto", sans-serif;
color: rgba(0,0,0,0.87);
background-color: #efefef; }
* {
box-sizing: border-box; }
body {
max-width: 600px;
background-color: #fff;
padding: 10px; }
h2 span,
h2 small {
display: block; }
article {
border-radius: 6px;
border: 1px solid #ccc;
padding: 10px;
margin: 10px 0; }
article h3 small,
article h3 span {
display: block;
}
article h3 small {
font-size: 0.875rem; }
article :first-child {
margin-top: 0; }
article :last-child {
margin-bottom: 0; }
</style>
</head>
<body>
<main>
<section>
$(viewAbout)
</section>
<section>
$(viewNextSession $nextEvent)
$(viewEvents $nextEvent)
</section>
<section>
<h2>Future Events</h2>
$(viewEvents $(echo $futureEvents | tr ' ' '\n' | head -n 2 | xargs))
<details>
<summary>
and $(($(echo $futureEvents | wc -w) - 2)) more in 2022
</summary>
$(viewEvents $(echo $futureEvents | tr ' ' '\n' | tail -n +3 | xargs))
</details>
</section>
<section>
<h2>Past Events</h2>
$(viewEvents $(echo $pastEvents | tr ' ' '\n' | tac | head -n 1 | xargs))
<details>
<summary>
and $(($(echo $pastEvents | wc -w) - 1)) more in 2022
</summary>
$(viewEvents $(echo $pastEvents | tr ' ' '\n' | tac | tail -n +2 | xargs))
</details>
</section>
</main>
</body>
</html>
EOF
'')
];
}