from flask import Blueprint, jsonify

from ..conversation_store import list_conversations, load as load_conversation

bp = Blueprint("conversation", __name__, url_prefix="/api")


@bp.get("/conversations")
def conversations():
    items = list_conversations()
    return jsonify([{
        "id": c.get('id'),
        "title": c.get('title') or "未命名",
        "updated_at": c.get('updated_at'),
    } for c in items])


@bp.get("/conversations/<cid>")
def get_conversation(cid):
    convo = load_conversation(cid)
    if not convo:
        return jsonify({"error": "not found"}), 404
    return jsonify({"id": cid, "messages": convo.get('messages', [])})