#!/usr/bin/env bash
# Thin launch vehicle for the Prole installer.
#
# Local execution (from a repo checkout):
#   ./install.sh [args...]
#
# Bootstrap via curl (first-time install):
#   curl -fsSL https://knoey.com/install.sh | bash
#
# ---------------------------------------------------------------------------
# Dual-cluster GKE architecture (prod / k8s mode)
# ---------------------------------------------------------------------------
#   knoe-dev-0      — Autopilot cluster: app workloads (GitLab, platform), service mesh knoe-0
#   knoe-cnpg-0     — Standard GKE cluster: CloudNative-PG only (rw/ro/r pod separation)
#                     3 nodes × e2-standard-2, node pool: cnpg-db-pool
#
# GCP quota requirements (project: plenary-truck-485623-p7, region: us-west3):
#   pd-standard : node boot disks  (3 × 50 GB = 150 GB — does NOT count against pd-ssd quota)
#   pd-ssd      : PGDATA PVCs      (3 × 50 Gi = 150 Gi)
#                 WAL PVCs         (3 × 50 Gi = 150 Gi)
#                 Total pd-ssd     = 300 Gi  (requires 300 GB pd-ssd regional quota)
#
# To patch an existing knoe-cnpg-0 cluster with wrong boot disk type:
#   ./scripts/patch_clusters.sh          # dry-run first: DRY_RUN=true ./scripts/patch_clusters.sh
# ---------------------------------------------------------------------------

set -euo pipefail

# Repo URL used only during bootstrap (curl-pipe) installs.
PROLE_REPO_URL="${PROLE_REPO_URL:-https://gitlab.knoey.com/prole/prole.git}"
# Default install directory for bootstrap installs.
_INSTALL_DIR="${PROLE_HOME:-$HOME/prole}"

_check_gcp_tools() {
  local missing=0
  if ! command -v gcloud >/dev/null 2>&1; then
    echo "Error: gcloud CLI is required for GKE cluster management." >&2
    echo "  Install: https://cloud.google.com/sdk/docs/install" >&2
    missing=1
  fi
  if ! command -v kubectl >/dev/null 2>&1; then
    echo "Error: kubectl is required for Kubernetes cluster operations." >&2
    echo "  Install: https://kubernetes.io/docs/tasks/tools/" >&2
    missing=1
  fi
  if [[ "$missing" -ne 0 ]]; then
    echo "" >&2
    echo "Install missing tools and re-run install.sh." >&2
    exit 1
  fi
}

_bootstrap() {
  echo "==> Bootstrapping Prole installer..."
  command -v git     >/dev/null 2>&1 || { echo "Error: git is required." >&2; exit 1; }
  command -v python3 >/dev/null 2>&1 || { echo "Error: python3 is required." >&2; exit 1; }

  if [[ -d "${_INSTALL_DIR}/.git" ]]; then
    echo "==> Updating existing checkout at ${_INSTALL_DIR} ..."
    git -C "${_INSTALL_DIR}" pull --ff-only
  else
    echo "==> Cloning to ${_INSTALL_DIR} ..."
    git clone "${PROLE_REPO_URL}" "${_INSTALL_DIR}"
  fi

  exec "${_INSTALL_DIR}/install.sh" "$@"
}

# Resolve script directory; empty when running via curl pipe.
_src="${BASH_SOURCE[0]:-}"
_script_dir="$(cd "$(dirname "${_src:-/}")" 2>/dev/null && pwd || echo "")"

if [[ -n "${_script_dir}" && -d "${_script_dir}/knoe" ]]; then
  # Local checkout: delegate to the Python installer module.
  cd "${_script_dir}"
  # Prefer the venv Python at PROLE_HOME (or the repo root) when available;
  # it carries all prole_requirements.txt dependencies.
  _VENV_PYTHON="${PROLE_HOME:-${_script_dir}}/bin/python3"
  _check_gcp_tools
  if [[ -x "${_VENV_PYTHON}" ]]; then
    exec "${_VENV_PYTHON}" -m knoe.ui.screens "$@"
  fi
  exec python3 -m knoe.ui.screens "$@"
else
  # No local checkout found — bootstrap from the remote repo.
  _bootstrap "$@"
fi