Add advanced monitoring and release infrastructure

scripts/generate-appcast.sh

@@ -0,0 +1,22 @@
+#!/bin/zsh
+set -euo pipefail
+
+PROJECT_DIR="${0:A:h:h}"
+ARCHIVES_DIR="${1:-$PROJECT_DIR/dist/updates}"
+DOWNLOAD_PREFIX="${PUTER_UPDATE_DOWNLOAD_PREFIX:-}"
+PRIVATE_KEY="${PUTER_SPARKLE_PRIVATE_KEY:-}"
+GENERATOR="$PROJECT_DIR/.build/artifacts/sparkle/Sparkle/bin/generate_appcast"
+
+if [[ -z "$DOWNLOAD_PREFIX" || -z "$PRIVATE_KEY" ]]; then
+    print -u2 "Set PUTER_UPDATE_DOWNLOAD_PREFIX and PUTER_SPARKLE_PRIVATE_KEY."
+    exit 2
+fi
+if [[ ! -x "$GENERATOR" ]]; then
+    swift package resolve --package-path "$PROJECT_DIR"
+fi
+mkdir -p "$ARCHIVES_DIR"
+print -rn -- "$PRIVATE_KEY" | "$GENERATOR" \
+    --ed-key-file - \
+    --download-url-prefix "$DOWNLOAD_PREFIX" \
+    "$ARCHIVES_DIR"
+print "Generated $ARCHIVES_DIR/appcast.xml"