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

ROOT_DIR=/workspace
GIT_BRANCH="${GIT_BRANCH:-}"

# Checkout branch if specified
if [[ -n "$GIT_BRANCH" ]]; then
  cd "$ROOT_DIR"
  git config --global --add safe.directory "$ROOT_DIR" 2>/dev/null || true
  CURRENT=$(git rev-parse --abbrev-ref HEAD 2>/dev/null || echo "unknown")

  if [[ "$CURRENT" != "$GIT_BRANCH" ]]; then
    echo "[landing-entrypoint] Switching to branch: $GIT_BRANCH"
    # Try local branch first, then remote
    if git rev-parse --verify "$GIT_BRANCH" >/dev/null 2>&1; then
      git checkout "$GIT_BRANCH" 2>/dev/null || echo "[landing-entrypoint] WARNING: Could not checkout $GIT_BRANCH"
    else
      git fetch origin "$GIT_BRANCH" 2>/dev/null || true
      git checkout "$GIT_BRANCH" 2>/dev/null || echo "[landing-entrypoint] WARNING: Could not checkout $GIT_BRANCH"
    fi
  fi
fi

LANDING_DIR=$ROOT_DIR/landing
REQUIRED_DIST="$ROOT_DIR/kraiken-lib/dist/index.js"

if [[ ! -f "$REQUIRED_DIST" ]]; then
  echo "[landing-entrypoint] ERROR: Run ./scripts/build-kraiken-lib.sh before starting containers" >&2
  exit 1
fi

cd "$LANDING_DIR"

# Check if node_modules is populated (named volume may be empty on first run)
if [[ ! -d node_modules/.bin ]]; then
  echo "[landing-entrypoint] Installing dependencies..."
  npm ci --loglevel error && npm cache clean --force 2>&1 || {
    echo "[landing-entrypoint] npm ci failed, trying npm install"
    npm install --no-save --loglevel error && npm cache clean --force
  }
else
  echo "[landing-entrypoint] Using cached node_modules from volume"
fi

export CHOKIDAR_USEPOLLING=${CHOKIDAR_USEPOLLING:-1}
export HOST=0.0.0.0
export PORT=${PORT:-5174}

exec npm run dev -- --host 0.0.0.0 --port 5174