#!/usr/bin/env bash
# shellcheck shell=bash
# - - - - - - - - - - - - - - - - - - - - - - - - -
# Claude Code CLI wrapper with automatic screen session management
# - - - - - - - - - - - - - - - - - - - - - - - - -
# This wrapper transparently manages screen sessions for Claude Code CLI
# When run interactively, it automatically attaches to or creates a screen session
# - - - - - - - - - - - - - - - - - - - - - - - - -

# Path to the real claude binary (installed by native installer)
REAL_CLAUDE="/root/.local/bin/claude"
SCREEN_SESSION_NAME="claude"

# Check if real claude exists
if [ ! -f "$REAL_CLAUDE" ]; then
  echo "Error: Claude Code CLI not found at $REAL_CLAUDE" >&2
  echo "Please ensure Claude Code is properly installed" >&2
  exit 1
fi

# If not running in an interactive terminal, just pass through to real claude
if [ ! -t 0 ] || [ ! -t 1 ]; then
  exec "$REAL_CLAUDE" "$@"
fi

# Check if screen is available
if ! command -v screen >/dev/null 2>&1; then
  echo "Warning: screen not found, running claude directly" >&2
  exec "$REAL_CLAUDE" "$@"
fi

# Check if a screen session named "claude" already exists
if screen -list 2>/dev/null | grep -q "\.${SCREEN_SESSION_NAME}[[:space:]]"; then
  # Session exists - attach to it
  echo "Attaching to existing Claude screen session..."
  echo "To detach: Ctrl+A then D"
  echo ""
  exec screen -r "$SCREEN_SESSION_NAME"
else
  # No session exists - create one
  echo "Starting Claude in a new screen session..."
  echo "To detach: Ctrl+A then D"
  echo "To reattach: docker exec -it <container> claude"
  echo ""
  # Start claude in a new screen session
  exec screen -S "$SCREEN_SESSION_NAME" -t claude "$REAL_CLAUDE" "$@"
fi