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nixos-config/.gitea/scripts/update-appimage-nix.sh
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#!/usr/bin/env bash
set -euo pipefail
: "${FILE:?FILE is required}"
: "${LATEST_RELEASE_URL:?LATEST_RELEASE_URL is required}"
: "${DOWNLOAD_URL_TEMPLATE:?DOWNLOAD_URL_TEMPLATE is required}"
: "${RELEASE_API_REPO:?RELEASE_API_REPO is required}"
if command -v python >/dev/null 2>&1; then
PYTHON_BIN=python
elif command -v python3 >/dev/null 2>&1; then
PYTHON_BIN=python3
else
echo "python is required but was not found"
exit 1
fi
version_strip_prefix="${LATEST_VERSION_STRIP_PREFIX:-v}"
release_tag_template="${RELEASE_TAG_TEMPLATE:-{version}}"
release_tag_template="${release_tag_template//$'\r'/}"
current_version=$($PYTHON_BIN - <<'PY'
import re
import os
p=os.environ['FILE']
s=open(p).read()
m=re.search(r'version\s*=\s*"([^"]+)";', s)
print(m.group(1) if m else "")
PY
)
latest_version=$(curl -fsSLI -o /dev/null -w '%{url_effective}' "$LATEST_RELEASE_URL" \
| sed -E 's#.*/##')
if [ -n "$version_strip_prefix" ]; then
latest_version="${latest_version#${version_strip_prefix}}"
fi
echo "current=$current_version"
echo "latest=$latest_version"
if [ -z "$latest_version" ] || [ "$latest_version" = "$current_version" ]; then
echo "updated=false" >> "$GITHUB_OUTPUT"
exit 0
fi
download_url="${DOWNLOAD_URL_TEMPLATE//\{version\}/$latest_version}"
new_hash=$(nix store prefetch-file --json "$download_url" | "$PYTHON_BIN" -c 'import json,sys; print(json.load(sys.stdin)["hash"])')
export LATEST_VERSION="$latest_version"
export NEW_HASH="$new_hash"
"$PYTHON_BIN" - <<'PY'
import os
import re
p=os.environ['FILE']
s=open(p).read()
s=re.sub(r'version\s*=\s*"[^"]+"', f'version = "{os.environ["LATEST_VERSION"]}"', s, count=1)
s=re.sub(r'hash\s*=\s*"[^"]+"', f'hash = "{os.environ["NEW_HASH"]}"', s, count=1)
open(p,'w').write(s)
PY
echo "updated=true" >> "$GITHUB_OUTPUT"
echo "version=$latest_version" >> "$GITHUB_OUTPUT"
echo "previous_version=$current_version" >> "$GITHUB_OUTPUT"
release_tag="${release_tag_template//\{version\}/$latest_version}"
release_tag="${release_tag#\{}"
release_tag="${release_tag%\}}"
release_tag="${release_tag#\'}"
release_tag="${release_tag%\'}"
api_url="https://api.github.com/repos/${RELEASE_API_REPO}/releases/tags/${release_tag}"
curl_headers=(
-H "Accept: application/vnd.github+json"
-H "X-GitHub-Api-Version: 2022-11-28"
)
if [ -n "${GITHUB_TOKEN:-}" ]; then
curl_headers+=( -H "Authorization: Bearer ${GITHUB_TOKEN}" )
fi
api_response=$(curl -sS -w '\n%{http_code}' "${curl_headers[@]}" "$api_url" || true)
api_body=$(printf '%s\n' "$api_response" | sed '$d')
api_code=$(printf '%s\n' "$api_response" | tail -n1)
release_notes=""
if [ "$api_code" = "200" ]; then
release_notes=$(printf '%s' "$api_body" | "$PYTHON_BIN" -c 'import json,sys; d=json.load(sys.stdin); print((d.get("body") or "").strip())' || true)
else
echo "warning: failed to fetch release notes from GitHub API (status=$api_code, url=$api_url)"
fi
if [ -z "$release_notes" ]; then
release_notes="_No changelog found in upstream release notes. Check ${LATEST_RELEASE_URL%/latest}/tag/${release_tag}._"
fi
delimiter="CHANGELOG_$(date +%s%N)"
{
echo "changelog<<${delimiter}"
printf '%s\n' "$release_notes"
echo "${delimiter}"
} >> "$GITHUB_OUTPUT"