import os
import json
import zipfile


def generate_course_zip(plan, sources, out_dir="/tmp/course_agent"):
    """Generate a zip package containing the course plan and sources."""
    os.makedirs(out_dir, exist_ok=True)
    plan_path = os.path.join(out_dir, "plan.txt")
    with open(plan_path, "w") as f:
        f.write(plan)
    sources_path = os.path.join(out_dir, "sources.json")
    with open(sources_path, "w") as f:
        json.dump(sources, f)
    zip_path = os.path.join(out_dir, "course.zip")
    with zipfile.ZipFile(zip_path, "w") as zf:
        zf.write(plan_path, arcname="plan.txt")
        zf.write(sources_path, arcname="sources.json")
    return zip_path