ccweb-flutter-install.sh

#!/usr/bin/env bash
# SessionStart hook: install Flutter SDK on Claude Code on the Web

LOG_PREFIX="[flutter-setup]"
log(){ echo "$LOG_PREFIX $*" >&2; }

# Only run in Claude Code on the Web
if [[ "${CLAUDE_CODE_REMOTE:-}" != "true" ]]; then
  exit 0
fi

# Move to project root (safe)
if [ -n "${CLAUDE_PROJECT_DIR:-}" ] && [ -d "${CLAUDE_PROJECT_DIR}" ]; then
  cd "${CLAUDE_PROJECT_DIR}"
fi

# Require jq
if ! command -v jq >/dev/null 2>&1; then
  log "ERROR: jq is not installed in this environment."
  exit 0
fi

INSTALL_DIR="${HOME}/.flutter-sdk"
FLUTTER_BIN="${INSTALL_DIR}/bin/flutter"
SHARED_SH="${INSTALL_DIR}/bin/internal/shared.sh"
RELEASES_JSON_URL="https://storage.googleapis.com/flutter_infra_release/releases/releases_linux.json"

log "start"

# Persist PATH for subsequent commands in the session
ensure_path() {
  export FLUTTER_HOME="${INSTALL_DIR}"
  export PATH="${PATH}:${INSTALL_DIR}/bin"

  if [ -n "${CLAUDE_ENV_FILE:-}" ]; then
    if ! grep -q 'export FLUTTER_HOME=' "$CLAUDE_ENV_FILE" 2>/dev/null; then
      {
        echo "export FLUTTER_HOME=\"${INSTALL_DIR}\""
        echo "export PATH=\"\$PATH:${INSTALL_DIR}/bin\""
      } >> "${CLAUDE_ENV_FILE}"
      log "PATH persisted to CLAUDE_ENV_FILE"
    fi
  else
    marker="# >>> claude-web-flutter >>>"
    if ! grep -qF "${marker}" "${HOME}/.bashrc" 2>/dev/null; then
      {
        echo "${marker}"
        echo "export FLUTTER_HOME=\"${INSTALL_DIR}\""
        echo "export PATH=\"\$PATH:${INSTALL_DIR}/bin\""
        echo "# <<< claude-web-flutter <<<"
      } >> "${HOME}/.bashrc"
    fi
  fi
}

# Check if Flutter SDK is complete (not just binary exists)
needs_install=false
if [ ! -x "${FLUTTER_BIN}" ]; then
  needs_install=true
  log "Flutter binary not found"
elif [ ! -f "${SHARED_SH}" ]; then
  needs_install=true
  log "Flutter SDK incomplete, reinstalling..."
fi

if [ "${needs_install}" = true ]; then
  log "Fetching Flutter stable bundle info..."

  releases_json="$(curl -fsSL "${RELEASES_JSON_URL}")" || {
    log "Failed to fetch releases JSON"
    exit 0
  }

  base_url="$(printf '%s' "${releases_json}" | jq -r '.base_url')"
  stable_hash="$(printf '%s' "${releases_json}" | jq -r '.current_release.stable')"
  archive="$(printf '%s' "${releases_json}" | jq -r --arg h "${stable_hash}" '.releases[] | select(.hash == $h) | .archive' | head -n 1)"

  if [ -z "${archive}" ] || [ "${archive}" = "null" ]; then
    log "ERROR: Could not resolve stable archive from releases JSON."
    exit 0
  fi

  if [[ "${archive}" =~ ^https?:// ]]; then
    tar_url="${archive}"
  else
    tar_url="${base_url%/}/${archive#/}"
  fi

  log "Bundle: ${tar_url}"

  tmp_dir="$(mktemp -d)"
  trap 'rm -rf "$tmp_dir"' EXIT

  # Clean up any incomplete installation
  rm -rf "${INSTALL_DIR}"
  mkdir -p "${INSTALL_DIR}"

  # Download and extract based on file extension
  if [[ "${tar_url}" == *.tar.xz ]]; then
    log "Downloading tar.xz..."
    if ! curl -fsSL "${tar_url}" -o "${tmp_dir}/flutter.tar.xz"; then
      log "Failed to download Flutter SDK"
      exit 0
    fi
    
    log "Extracting..."
    if ! tar -xJf "${tmp_dir}/flutter.tar.xz" -C "${INSTALL_DIR}" --strip-components=1 2>&1; then
      log "ERROR: tar extraction failed"
      exit 0
    fi
  elif [[ "${tar_url}" == *.zip ]]; then
    log "Downloading zip..."
    if ! curl -fsSL "${tar_url}" -o "${tmp_dir}/flutter.zip"; then
      log "Failed to download Flutter SDK"
      exit 0
    fi
    log "Extracting..."
    if ! unzip -q "${tmp_dir}/flutter.zip" -d "${tmp_dir}"; then
      log "Failed to extract Flutter SDK"
      exit 0
    fi
    mv "${tmp_dir}"/flutter/* "${INSTALL_DIR}/"
  else
    log "ERROR: Unknown archive format: ${tar_url}"
    exit 0
  fi

  # Verify installation
  if [ ! -f "${SHARED_SH}" ]; then
    log "ERROR: Installation failed - shared.sh not found"
    exit 0
  fi

  log "Flutter SDK extracted to ${INSTALL_DIR}"
else
  log "Flutter already installed"
fi

ensure_path

# Fix git ownership issue
git config --global --add safe.directory "${INSTALL_DIR}"

flutter config --no-analytics >/dev/null 2>&1 || true

log "flutter --version"
if ! flutter --version >&2; then
  log "ERROR: flutter --version failed"
  exit 0
fi

if [ -f "pubspec.yaml" ]; then
  log "flutter pub get"
  if ! flutter pub get >&2; then
    log "flutter pub get failed"
    exit 0
  fi
else
  log "pubspec.yaml not found, skipping pub get"
fi

log "done"
exit 0

timeoutは長くしましょう

          {
            "type": "command",
            "command": "[ \"$CLAUDE_CODE_REMOTE\" = \"true\" ] && curl -fsSL https://gist.githubusercontent.com/bannzai/0b762d81d9d115bb1aa3b81037322478/raw/ccweb-flutter-install.sh | bash",
            "timeout": 300
          }