#!/usr/bin/env bash
# ────────────────────────────────────────────────────────────
# dostalgia — Build & Deploy Script
# ────────────────────────────────────────────────────────────
# Usage:
#   ./deploy.sh                    # build & deploy (behind current tag)
#   ./deploy.sh --tag v1.2.3       # build & deploy with specific tag
#   ./deploy.sh --no-pull          # skip git pull
#   ./deploy.sh --help             # show this message
#
# This script does the same thing the Gitea Actions workflow does,
# but can be run manually from the Unraid host (or any machine with
# Docker access and the repo cloned).
# ────────────────────────────────────────────────────────────

set -euo pipefail

# ─── Config ─────────────────────────────────────────────────
IMAGE_NAME="${IMAGE_NAME:-dostalgia}"
CONTAINER_NAME="${CONTAINER_NAME:-dostalgia}"
HOST_PORT="${HOST_PORT:-8765}"
DATA_DIR="${DATA_DIR:-/opt/data/workspace/dostalgia/data}"
REPO_DIR="$(cd "$(dirname "$0")" && pwd)"

# IGDB credentials (set these in your environment or .env file)
TWITCH_CLIENT_ID="${TWITCH_CLIENT_ID:-}"
TWITCH_CLIENT_SECRET="${TWITCH_CLIENT_SECRET:-}"

# ─── Help ───────────────────────────────────────────────────
if [[ "${1:-}" == "--help" ]]; then
  sed -n '2,14p' "$0"
  exit 0
fi

# ─── Parse args ─────────────────────────────────────────────
DO_PULL=true
TAG=""

while [[ $# -gt 0 ]]; do
  case "$1" in
    --no-pull) DO_PULL=false; shift ;;
    --tag)     TAG="$2"; shift 2 ;;
    *)         echo "Unknown: $1"; exit 1 ;;
  esac
done

# ─── Pull latest code ───────────────────────────────────────
if $DO_PULL; then
  echo "⟳ Pulling latest code from Gitea..."
  cd "$REPO_DIR"
  git fetch origin
  git checkout main
  git pull origin main
fi

if [[ -z "$TAG" ]]; then
  TAG="$(git rev-parse --short HEAD)"
fi

echo "Building: $IMAGE_NAME:$TAG"

# ─── Build the frontend and backend ─────────────────────────
echo "🔨 Building Docker image..."
docker build -t "$IMAGE_NAME:$TAG" "$REPO_DIR"
docker tag "$IMAGE_NAME:$TAG" "$IMAGE_NAME:latest"

# ─── Stop old container ─────────────────────────────────────
echo "🛑 Stopping old container..."
docker stop "$CONTAINER_NAME" 2>/dev/null || true
docker rm "$CONTAINER_NAME" 2>/dev/null || true

# ─── Start new container ────────────────────────────────────
echo "🚀 Starting new container..."
DOCKER_ARGS=(
  -d
  --name "$CONTAINER_NAME"
  --restart unless-stopped
  -p "$HOST_PORT:8765"
  -v "$DATA_DIR:/data"
)

if [[ -n "$TWITCH_CLIENT_ID" && -n "$TWITCH_CLIENT_SECRET" ]]; then
  DOCKER_ARGS+=(-e "TWITCH_CLIENT_ID=$TWITCH_CLIENT_ID")
  DOCKER_ARGS+=(-e "TWITCH_CLIENT_SECRET=$TWITCH_CLIENT_SECRET")
  echo "   IGDB credentials: configured"
else
  echo "   IGDB credentials: not set (auto-scrape disabled)"
  echo "   Set TWITCH_CLIENT_ID and TWITCH_CLIENT_SECRET env vars to enable"
fi

docker run "${DOCKER_ARGS[@]}" "$IMAGE_NAME:latest"

# ─── Health check ───────────────────────────────────────────
echo "⏳ Waiting for container to be healthy..."
sleep 3
for i in $(seq 1 30); do
  if curl -sf "http://localhost:$HOST_PORT/api/health" >/dev/null 2>&1; then
    echo "✅ Dostalgia is running at http://localhost:$HOST_PORT"
    exit 0
  fi
  sleep 2
done

echo "❌ Health check failed — check logs: docker logs $CONTAINER_NAME"
exit 1