#!/usr/bin/env bash
# Deploy teleo-pipeline to VPS.
# Usage: ./deploy.sh [--restart]
#
# Pulls latest from current branch, updates venv, optionally restarts service.
# Run from the VPS as the teleo user, or via SSH:
#   ssh teleo@77.42.65.182 'cd /opt/teleo-eval/pipeline && ./deploy.sh --restart'

set -euo pipefail

DEPLOY_DIR="/opt/teleo-eval/pipeline"
VENV_DIR="${DEPLOY_DIR}/.venv"
SERVICE="teleo-pipeline"

cd "$DEPLOY_DIR"

echo "=== Pulling latest ==="
git pull --ff-only

echo "=== Updating venv ==="
"${VENV_DIR}/bin/pip" install -q -e ".[dev]" 2>/dev/null || \
    "${VENV_DIR}/bin/pip" install -q -e .

echo "=== Syntax check ==="
"${VENV_DIR}/bin/python3" -c "
import ast, pathlib, sys
errors = []
for f in pathlib.Path('.').rglob('*.py'):
    if '.venv' in str(f):
        continue
    try:
        ast.parse(f.read_text())
    except SyntaxError as e:
        errors.append(f'{f}: {e}')
if errors:
    for e in errors:
        print(f'SYNTAX ERROR: {e}', file=sys.stderr)
    sys.exit(1)
print('All Python files pass syntax check')
"

if [[ "${1:-}" == "--restart" ]]; then
    echo "=== Restarting ${SERVICE} ==="
    sudo systemctl restart "$SERVICE"
    sleep 2
    if systemctl is-active --quiet "$SERVICE"; then
        echo "=== ${SERVICE} is running ==="
        systemctl status "$SERVICE" --no-pager -l | head -15
    else
        echo "ERROR: ${SERVICE} failed to start" >&2
        journalctl -u "$SERVICE" --no-pager -n 20
        exit 1
    fi
else
    echo "=== Deploy complete (service not restarted — use --restart to restart) ==="
fi