Automate AUR publish in tagged release workflow (#22)

scripts/update-aur-package.sh

@@ -0,0 +1,124 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+usage() {
+  cat <<'EOF'
+Usage: scripts/update-aur-package.sh --pkg-dir <dir> --version <version> --appimage <path> --wrapper <path> --assets <path>
+EOF
+}
+
+pkg_dir=
+version=
+appimage=
+wrapper=
+assets=
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --pkg-dir)
+      pkg_dir="${2:-}"
+      shift 2
+      ;;
+    --version)
+      version="${2:-}"
+      shift 2
+      ;;
+    --appimage)
+      appimage="${2:-}"
+      shift 2
+      ;;
+    --wrapper)
+      wrapper="${2:-}"
+      shift 2
+      ;;
+    --assets)
+      assets="${2:-}"
+      shift 2
+      ;;
+    -h|--help)
+      usage
+      exit 0
+      ;;
+    *)
+      echo "Unknown argument: $1" >&2
+      usage >&2
+      exit 1
+      ;;
+  esac
+done
+
+if [[ -z "$pkg_dir" || -z "$version" || -z "$appimage" || -z "$wrapper" || -z "$assets" ]]; then
+  usage >&2
+  exit 1
+fi
+
+version="${version#v}"
+pkgbuild="${pkg_dir}/PKGBUILD"
+
+if [[ ! -f "$pkgbuild" ]]; then
+  echo "Missing PKGBUILD at $pkgbuild" >&2
+  exit 1
+fi
+
+for artifact in "$appimage" "$wrapper" "$assets"; do
+  if [[ ! -f "$artifact" ]]; then
+    echo "Missing artifact: $artifact" >&2
+    exit 1
+  fi
+done
+
+mapfile -t sha256sums < <(sha256sum "$appimage" "$wrapper" "$assets" | awk '{print $1}')
+
+tmpfile="$(mktemp)"
+awk \
+  -v version="$version" \
+  -v sum_appimage="${sha256sums[0]}" \
+  -v sum_wrapper="${sha256sums[1]}" \
+  -v sum_assets="${sha256sums[2]}" \
+  '
+  BEGIN {
+    in_sha_block = 0
+    found_pkgver = 0
+    found_sha_block = 0
+  }
+  /^pkgver=/ {
+    print "pkgver=" version
+    found_pkgver = 1
+    next
+  }
+  /^sha256sums=\(/ {
+    print "sha256sums=("
+    print "\047" sum_appimage "\047"
+    print "\047" sum_wrapper "\047"
+    print "\047" sum_assets "\047"
+    in_sha_block = 1
+    next
+  }
+  in_sha_block {
+    if ($0 ~ /^\)/) {
+      print ")"
+      in_sha_block = 0
+      found_sha_block = 1
+    }
+    next
+  }
+  {
+    print
+  }
+  END {
+    if (!found_pkgver) {
+      print "Missing pkgver= line in PKGBUILD" > "/dev/stderr"
+      exit 1
+    }
+    if (!found_sha_block) {
+      print "Missing sha256sums block in PKGBUILD" > "/dev/stderr"
+      exit 1
+    }
+  }
+  ' "$pkgbuild" > "$tmpfile"
+mv "$tmpfile" "$pkgbuild"
+
+(
+  cd "$pkg_dir"
+  makepkg --printsrcinfo > .SRCINFO
+)