def rewrite_script(words):
    """
    Converts raw transcript → structured viral script
    """

    text = " ".join([w["text"] for w in words])

    return {
        "hook": f"Wait—{text[:60]}...",
        "summary": text[:200],
        "emotion": "high" if "!" in text else "medium"
    }


def viral_score(engagement_curve):
    """
    Evaluates full video potential
    """

    if not engagement_curve:
        return 0

    peak = max(engagement_curve)
    avg = sum(engagement_curve) / len(engagement_curve)

    return (peak * 0.7) + (avg * 0.3)