Hugo-based levitation.wales initial commit

scripts/fetch-citations.sh

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+#
+# Fetch CSL-JSON citation metadata for every DOI listed in
+# data/publications.yaml and cache it under data/citations/.
+#
+# The cache is committed to the repo so the site builds offline and
+# reproducibly. Re-run this only when you add or change a DOI:
+#
+#   make citations            # fetch any not yet cached
+#   make citations FORCE=1    # re-fetch everything (refresh)
+#
+set -euo pipefail
+cd "$(dirname "$0")/.."
+
+SRC=data/publications.yaml
+OUT=data/citations
+mkdir -p "$OUT"
+
+# Same slug rule as the Hugo template: lowercase, non-alphanumerics -> "_".
+slug() { printf '%s' "$1" | tr '[:upper:]' '[:lower:]' | sed 's/[^a-z0-9]/_/g'; }
+
+mapfile -t dois < <(grep -oP '^\s*-\s*doi:\s*"\K[^"]+' "$SRC")
+
+if [[ ${#dois[@]} -eq 0 ]]; then
+  echo "No DOIs found in $SRC" >&2
+  exit 1
+fi
+
+for doi in "${dois[@]}"; do
+  out="$OUT/$(slug "$doi").json"
+  if [[ -f "$out" && "${FORCE:-}" != "1" ]]; then
+    echo "cached  $doi"
+    continue
+  fi
+  echo "fetch   $doi"
+  tmp=$(mktemp)
+  if curl -fsSL --retry 3 --retry-delay 2 \
+       -H "Accept: application/vnd.citationstyles.csl+json" \
+       "https://doi.org/$doi" -o "$tmp" \
+     && python3 -c "import json,sys; json.load(open(sys.argv[1]))" "$tmp" 2>/dev/null; then
+    mv "$tmp" "$out"
+  else
+    rm -f "$tmp"
+    echo "  !! failed to fetch valid CSL-JSON for $doi" >&2
+    exit 1
+  fi
+done
+
+echo "Done. Cached ${#dois[@]} citation(s) in $OUT/"