"""ConversationMessage -> Redis conversation history 的纯映射（无 I/O）。"""

from __future__ import annotations

from typing import Any, Dict, List

from app.features.conversation.models import ConversationMessage


def conversation_messages_to_redis_history(
    rows: List[ConversationMessage],
) -> List[Dict[str, Any]]:
    """ConversationMessage 行 -> Redis conversation history 项。"""
    history: List[Dict[str, Any]] = []
    for row in rows:
        item: Dict[str, Any] = {
            "role": row.role,
            "content": row.content,
            "messageType": row.message_type,
            "timestamp": row.created_at.isoformat() if row.created_at else None,
            "durableMessageId": row.id,
        }
        if row.voice_session_id:
            item["voiceSessionId"] = row.voice_session_id
        if row.duration_seconds:
            item["durationSeconds"] = row.duration_seconds
        if row.tts_audio_urls:
            item["ttsAudioUrls"] = row.tts_audio_urls
        history.append(item)
    return history