#!/usr/bin/env bash
# ZizkaDB OSS quickstart — NO git clone (when GHCR images are public).
# Downloads ~4 small files to ~/.zizkadb, pulls pre-built Docker images, runs db.why() demo.
# If GHCR pull fails, automatically shallow-clones and builds locally.
#
#   curl -fsSL https://raw.githubusercontent.com/Zizka-ai/ZizkaDB/main/scripts/quickstart-remote.sh | bash
#
set -euo pipefail

REF="${ZIZKADB_REF:-main}"
REPO="${ZIZKADB_REPO:-Zizka-ai/ZizkaDB}"
BASE="https://raw.githubusercontent.com/${REPO}/${REF}"
INSTALL_DIR="${ZIZKADB_HOME:-${HOME}/.zizkadb}"
INFRA="${INSTALL_DIR}/infra"
CLONE_DIR="${INSTALL_DIR}/repo"

echo "════════════════════════════════════════════════════════"
echo "  ZizkaDB — remote quickstart (no repo clone)"
echo "════════════════════════════════════════════════════════"
echo ""
echo "  Install dir: ${INSTALL_DIR}"
echo ""

if ! command -v docker >/dev/null 2>&1; then
  echo "ERROR: Docker is required. https://docs.docker.com/get-docker/" >&2
  exit 1
fi

if ! docker info >/dev/null 2>&1; then
  echo "ERROR: Docker daemon not running. Start Docker Desktop or OrbStack." >&2
  exit 1
fi

run_demo() {
  if ! command -v python3 >/dev/null 2>&1; then
    echo "WARN: python3 not found — stack is up but demo skipped."
    echo "  pip install zizkadb-sdk && zizkadb demo"
    return 0
  fi

  echo "→ Installing SDK from PyPI..."
  python3 -m pip install -q zizkadb-sdk

  echo ""
  echo "→ Running causal lineage demo..."
  zizkadb demo || python3 -c "
import asyncio
from zizkadb import ZizkaDB
async def main():
    async with ZizkaDB(host='http://localhost:8000') as db:
        u = await db.log(agent='support-bot', event='user_message', data={'text': 'Why was my order delayed?'})
        r = await db.log(agent='support-bot', event='llm_response', data={'model': 'gpt-4o'}, parent_id=u.event_id)
        t = await db.log(agent='support-bot', event='tool_call', data={'tool': 'lookup_order'}, parent_id=r.event_id)
        (await db.why(t.event_id)).print()
asyncio.run(main())
"

  echo ""
  echo "════════════════════════════════════════════════════════"
  echo "  Done"
  echo "════════════════════════════════════════════════════════"
  echo ""
  echo "  Dashboard:  http://localhost:3001/login  →  Open my dashboard →"
  echo "  API:        http://localhost:8000/health"
  echo "  Connect:    https://github.com/${REPO}/blob/${REF}/CONNECT.md"
  echo ""
}

fallback_shallow_clone() {
  echo ""
  echo "→ GHCR pre-built images unavailable — falling back to shallow clone + local build..."
  echo "  (First run may take a few minutes while Docker builds api + dashboard.)"
  echo ""

  if ! command -v git >/dev/null 2>&1; then
    echo "ERROR: git is required for the build fallback." >&2
    echo "  Install git, or run:" >&2
    echo "    git clone https://github.com/${REPO}.git && cd ZizkaDB && bash scripts/quickstart.sh" >&2
    exit 1
  fi

  rm -rf "${CLONE_DIR}"
  git clone --depth 1 --branch "${REF}" "https://github.com/${REPO}.git" "${CLONE_DIR}"
  exec bash "${CLONE_DIR}/scripts/quickstart.sh"
}

mkdir -p "${INFRA}"

echo "→ Downloading compose + schema (not the full repo)..."
curl -fsSL "${BASE}/infra/docker-compose.quickstart.yml" -o "${INFRA}/docker-compose.quickstart.yml"
curl -fsSL "${BASE}/core/db/schema.sql" -o "${INFRA}/schema.sql"
curl -fsSL "${BASE}/infra/.env.quickstart" -o "${INFRA}/.env"

echo "→ Pulling pre-built images from ghcr.io/zizka-ai/ (first run may take 5–10 min)..."
cd "${INFRA}"
if ! docker compose -f docker-compose.quickstart.yml pull; then
  fallback_shallow_clone
fi

echo "→ Starting stack (postgres, qdrant, redis, api, dashboard)..."
docker compose -f docker-compose.quickstart.yml up -d

echo "→ Waiting for API..."
for i in $(seq 1 60); do
  if curl -sf http://localhost:8000/health >/dev/null 2>&1; then
    break
  fi
  sleep 2
  if [ "$i" -eq 60 ]; then
    echo "ERROR: API did not become healthy. Check: docker compose -f ${INFRA}/docker-compose.quickstart.yml logs api" >&2
    exit 1
  fi
done

run_demo

echo "  Stop:  cd ${INFRA} && docker compose -f docker-compose.quickstart.yml down"
echo ""