# routes/comments.py
from flask import Blueprint, request, jsonify, abort
from extensions      import db
from models.comment  import Comment
from models.behavior import Behavior

comments_bp = Blueprint('comments', __name__)

@comments_bp.route('', methods=['POST'])
def add_comment(post_id):
    data = request.get_json() or {}
    user_id = data.get('user_id')
    content = data.get('content')
    if not user_id or not content:
        return jsonify({'error': 'user_id and content required'}), 400

    comment = Comment(
        post_id=post_id,
        user_id=user_id,
        content=content,
        parent_id=data.get('parent_id')
    )
    db.session.add(comment)
    # 记录行为
    beh = Behavior(user_id=user_id, post_id=post_id, type='comment')
    db.session.add(beh)
    db.session.commit()
    return jsonify({'id': comment.id}), 201

@comments_bp.route('', methods=['GET'])
def list_comments(post_id):
    def serialize(c):
        return {
            'id': c.id,
            'user_id': c.user_id,
            'content': c.content,
            'created_at': c.created_at.isoformat(),
            'replies': [serialize(r) for r in c.replies]
        }

    comments = Comment.query.filter_by(
        post_id=post_id,
        status='active',
        parent_id=None
    ).order_by(Comment.created_at.asc()).all()
    return jsonify([serialize(c) for c in comments])