#!/bin/bash
set -euo pipefail

input=$(cat)
file_path=$(echo "$input" | jq -r '.tool_input.file_path // ""')
ext="${file_path##*.}"
ext_lower=$(echo "$ext" | tr '[:upper:]' '[:lower:]')

case "$ext_lower" in
  pptx|docx|xlsx|xls|ppt|doc)
    message="WARNING: This file is a binary document format (.${ext_lower}) that the Read tool cannot parse properly — it will return garbled binary data. Use the markitdown MCP tool instead: call mcp__markitdown__convert_to_markdown with uri=\"file://${file_path}\"."
    jq -n --arg msg "$message" '{hookSpecificOutput:{permissionDecision:"allow",additionalContext:$msg}}'
    ;;
  *)
    echo '{}'
    ;;
esac