ci: make release.sh idempotent

Re-running on the same tag died creating a release that already
existed. Reuse the tag's release when present, replace a stale asset
before uploading, and parse API responses with python3 instead of sed.

1 files changed, 24 insertions, 9 deletions

diff --git a/ci/release.sh b/ci/release.sh
index cec2b42..260efba 100755
--- a/ci/release.sh
+++ b/ci/release.sh
@@ -19,18 +19,33 @@ apk=app/build/outputs/apk/release/app-release.apk
 [ -f "$apk" ] || { echo "release: $apk not found; run ci/build.sh first" >&2; exit 1; }
 
 api="$base/api/v1/repos/$CODEBERG_REPO"
+auth="Authorization: token $CODEBERG_TOKEN"
+name="rsend-$tag.apk"
 
-# Create the release for the tag and capture its id.
-id=$(curl -fsS -X POST "$api/releases" \
-	-H "Authorization: token $CODEBERG_TOKEN" \
-	-H "Content-Type: application/json" \
-	-d "{\"tag_name\":\"$tag\",\"name\":\"$tag\"}" \
-	| sed -n 's/.*"id":\([0-9][0-9]*\).*/\1/p' | head -1)
+# Reuse the tag's release if it exists, else create it. Re-runs are idempotent:
+# same release, and a stale asset from an earlier run is replaced below.
+id=$(curl -fsS -H "$auth" "$api/releases/tags/$tag" 2>/dev/null \
+	| python3 -c 'import json,sys; print(json.load(sys.stdin)["id"])' 2>/dev/null) || id=
+if [ -n "$id" ]; then
+	curl -fsS -H "$auth" "$api/releases/$id/assets" \
+		| python3 -c 'import json,sys
+for a in json.load(sys.stdin):
+	if a["name"] == sys.argv[1]:
+		print(a["id"])' "$name" \
+		| while read -r aid; do
+			curl -fsS -X DELETE -H "$auth" "$api/releases/$id/assets/$aid"
+		done
+else
+	id=$(curl -fsS -X POST "$api/releases" \
+		-H "$auth" -H "Content-Type: application/json" \
+		-d "{\"tag_name\":\"$tag\",\"name\":\"$tag\"}" \
+		| python3 -c 'import json,sys; print(json.load(sys.stdin)["id"])')
+fi
 [ -n "$id" ] || { echo "release: could not create release for $tag" >&2; exit 1; }
 
 # Upload the APK as a release asset.
-curl -fsS -X POST "$api/releases/$id/assets?name=rsend-$tag.apk" \
-	-H "Authorization: token $CODEBERG_TOKEN" \
+curl -fsS -X POST "$api/releases/$id/assets?name=$name" \
+	-H "$auth" \
 	-F "attachment=@$apk" >/dev/null
 
-echo "release: uploaded rsend-$tag.apk to $CODEBERG_REPO ($tag)"
+echo "release: uploaded $name to $CODEBERG_REPO ($tag)"