#!/usr/bin/env bash
set -euo pipefail

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"

usage() {
  cat <<'EOF'
Usage: bash ./scripts/project_status.sh

Print the current local operational state of the QuantumLearning repo:
git state, repo-local Python environment, Playwright browser runtime, and
the latest repo-local Jupyter server if one is running.
EOF
}

if [[ "${1:-}" == "-h" || "${1:-}" == "--help" ]]; then
  usage
  exit 0
fi

cd "$ROOT_DIR"

BRANCH="$(git branch --show-current)"
COMMIT="$(git rev-parse --short HEAD)"
if [[ -n "$(git status --short)" ]]; then
  GIT_STATE="dirty"
else
  GIT_STATE="clean"
fi

echo "Root: $ROOT_DIR"
echo "Git: $BRANCH @ $COMMIT ($GIT_STATE)"

if [[ -x "$ROOT_DIR/.venv/bin/python" ]]; then
  PYTHON_VERSION="$("$ROOT_DIR/.venv/bin/python" -c 'import sys; print(sys.version.split()[0])')"
  echo "Venv: present (Python $PYTHON_VERSION)"
else
  echo "Venv: missing"
fi

if compgen -G "$ROOT_DIR/.playwright-browsers/chromium-*" >/dev/null; then
  echo "Browser runtime: installed"
else
  echo "Browser runtime: missing"
fi

if [[ -f "$ROOT_DIR/.logs/jupyterlab.log" ]]; then
  echo "Jupyter log: $ROOT_DIR/.logs/jupyterlab.log"
else
  echo "Jupyter log: none yet"
fi

if compgen -G "$ROOT_DIR/.jupyter_runtime/jpserver-*.json" >/dev/null; then
  LATEST_SERVER_JSON="$(ls -t "$ROOT_DIR"/.jupyter_runtime/jpserver-*.json | head -n 1)"
  "$ROOT_DIR/.venv/bin/python" - <<'PY' "$LATEST_SERVER_JSON"
from __future__ import annotations

import json
import os
import sys
from pathlib import Path

path = Path(sys.argv[1])
data = json.loads(path.read_text())
pid = int(data["pid"])

try:
    os.kill(pid, 0)
except ProcessLookupError:
    print("Jupyter: runtime file exists but process is not running")
    print(f"  Runtime file: {path}")
except PermissionError:
    print("Jupyter: runtime file present; live process probe is unavailable in this environment")
    print(f"  URL: {data['url']}lab/tree/notebooks/COURSE_BLUEPRINT.ipynb?token={data['token']}")
    print(f"  Runtime file: {path}")
else:
    print(f"Jupyter: running (pid {pid})")
    print(f"  URL: {data['url']}lab/tree/notebooks/COURSE_BLUEPRINT.ipynb?token={data['token']}")
    print(f"  Runtime file: {path}")
PY
else
  echo "Jupyter: no repo-local runtime file found"
fi

echo "Consumer:"
echo "  Start:   bash ./scripts/app.sh start --open"
echo "  Stop:    bash ./scripts/app.sh stop"
echo "  Restart: bash ./scripts/app.sh restart"
echo "  Logs:    bash ./scripts/app.sh logs -f"
echo "Validation:"
echo "  Quick: bash ./scripts/app.sh validate --quick"
echo "  Full:  bash ./scripts/app.sh validate --full"