zsh updates

arch/upgrade_vscode.sh

@@ -0,0 +1,74 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+VSCODE_DIR=/opt/vscode
+PRODUCT_JSON="${VSCODE_DIR}/resources/app/product.json"
+RELEASES_API='https://update.code.visualstudio.com/api/releases/stable'
+
+installed_version() {
+  if [[ ! -f "${PRODUCT_JSON}" ]]; then
+    return 0
+  fi
+  python3 -c "import json; print(json.load(open('${PRODUCT_JSON}'))['version'])"
+}
+
+latest_version() {
+  curl -fsSL "${RELEASES_API}" | python3 -c 'import json, sys; print(json.load(sys.stdin)[0])'
+}
+
+vscode_arch() {
+  case "$(uname -m)" in
+    x86_64) echo linux-x64 ;;
+    aarch64) echo linux-arm64 ;;
+    *)
+      echo "unsupported architecture: $(uname -m)" >&2
+      exit 1
+      ;;
+  esac
+}
+
+needs_upgrade() {
+  local installed="$1" latest="$2"
+
+  [[ -z "${installed}" ]] && return 0
+  [[ "${installed}" == "${latest}" ]] && return 1
+  [[ "$(printf '%s\n' "${installed}" "${latest}" | sort -V | head -n1)" == "${installed}" ]]
+}
+
+installed="$(installed_version || true)"
+latest="$(latest_version)"
+
+if ! needs_upgrade "${installed}" "${latest}"; then
+  if [[ -z "${installed}" ]]; then
+    echo "VS Code is not installed at ${VSCODE_DIR}"
+  else
+    echo "VS Code ${installed} is up to date"
+  fi
+  exit 0
+fi
+
+echo "Upgrading VS Code: ${installed:-not installed} -> ${latest}"
+
+arch="$(vscode_arch)"
+tmp="$(mktemp -d)"
+trap 'rm -rf "${tmp}"' EXIT
+
+archive="${tmp}/vscode.tar.gz"
+curl -fsSL "https://update.code.visualstudio.com/${latest}/${arch}/stable" -o "${archive}"
+tar -xzf "${archive}" -C "${tmp}"
+
+extract_dir="$(find "${tmp}" -maxdepth 1 -type d -name 'VSCode-linux-*' -print -quit)"
+if [[ -z "${extract_dir}" ]]; then
+  echo "failed to find extracted VS Code directory" >&2
+  exit 1
+fi
+
+mkdir -p "$(dirname "${VSCODE_DIR}")"
+if [[ -d "${VSCODE_DIR}" ]]; then
+  rm -rf "${VSCODE_DIR}.old"
+  mv "${VSCODE_DIR}" "${VSCODE_DIR}.old"
+fi
+mv "${extract_dir}" "${VSCODE_DIR}"
+rm -rf "${VSCODE_DIR}.old"
+
+echo "VS Code upgraded to ${latest}"