#!/usr/bin/env bash
# Demo runner: builds the image graph if needed, then runs the four-scenario
# harness against a real bottle. Designed to produce screen-recordable
# output — paced banners, color, no Python tracebacks unless something
# actually breaks.
#
# Usage:
#   bash scripts/demo.sh                  # run live
#   vhs docs/demo.tape                    # record to docs/demo.gif

set -euo pipefail

cd "$(dirname "$0")/.."

verbose=0
for arg in "$@"; do
  case "$arg" in
    -v|--verbose) verbose=1 ;;
    -h|--help)
      cat <<EOF
Usage: bash scripts/demo.sh [--verbose]

Runs four pipelock + git-gate probes against a real bottle and prints
PASS/BLOCK verdicts. Without --verbose, Docker build chatter and
backend log lines are suppressed so the output is recordable.
EOF
      exit 0 ;;
  esac
done

if ! command -v docker >/dev/null 2>&1; then
  echo "docker not found on PATH — install Docker Desktop or equivalent first" >&2
  exit 1
fi

if ! docker info >/dev/null 2>&1; then
  echo "docker daemon not reachable — start Docker and re-run" >&2
  exit 1
fi

# Pre-warm the image graph quietly so the recorded run shows only the
# four scenario blocks, not BuildKit progress. The backend rebuilds
# (cache-hit) on launch regardless; doing it once up front keeps the
# launch-time chatter short.
if [ "$verbose" = 0 ]; then
  docker build -q -t claude-bottle:latest . >/dev/null 2>&1 || true
  docker build -q -f Dockerfile.git-gate -t claude-bottle-git-gate:latest . >/dev/null 2>&1 || true
fi

if [ "$verbose" = 1 ]; then
  exec python3 -u scripts/demo_harness.py
else
  # Stderr carries backend info() lines and BuildKit chatter; drop it.
  # The harness writes all scenario output (banners, results) to stdout.
  exec python3 -u scripts/demo_harness.py 2>/dev/null
fi