"""Synthetic support example: copy one configured CSV to its export destination."""
import json
from pathlib import Path
import sys

config = json.loads(Path("config.json").read_text())
try:
    data = Path(config["input"]).read_bytes()
    Path(config["output"]).write_bytes(data)
except OSError as error:
    print(f"Export failed: {error.strerror}: {error.filename}", file=sys.stderr)
    sys.exit(1)
print(f"Exported {len(data)} bytes to {config['output']}")