#!/usr/bin/env bash

#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

set -o pipefail
set -e

FWDIR="$(cd "`dirname $0`"; pwd)"

# Function to display help message
function usage {
  cat <<EOF
Usage:
  $(basename $0) your_original_commands

Requirements:
  - debugpy must be installed (pip install debugpy)
EOF
  exit 0
}

# Check for help flags or no arguments
if [ $# -eq 0 ] || [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
  usage
fi

if ! python3 -c "import debugpy" 2>/dev/null; then
  echo "Error: debugpy is not installed. Please install it using 'pip install debugpy'."
  exit 1
fi

# If lib/pyspark.zip exists, issue a warning
if [ -f "$FWDIR/lib/pyspark.zip" ]; then
  echo "Warning: lib/pyspark.zip exists. VSCode debugger won't pick up your breakpoints in workers."
  echo "You can remove it to avoid potential issues."
fi

# If --hook-daemon is in the arguments, set the env variable to hook the daemon process
# Daemon is not hooked by default to avoid potential fork issues
new_args=()
for arg in "$@"; do
  case "$arg" in
    --hook-daemon)
      export PYSPARK_DEBUGPY_HOOK_DAEMON=1
      # skip this arg
      ;;
    *)
      new_args+=("$arg")
      ;;
  esac
done
set -- "${new_args[@]}"

export DEBUGPY_ADAPTER_ENDPOINTS=$VSCODE_DEBUGPY_ADAPTER_ENDPOINTS
export PYTHONPATH="$FWDIR/conf_vscode:$PYTHONPATH"

# debugpy will leave some debug processes in the system
# so we need to cleanup all the child processes after exiting
function cleanup {
  kill -- -$$
}
trap cleanup EXIT INT TERM

exec "$@"