from flask import Blueprint, request, jsonify, current_app
from app.models.system import SysUser
from app.extensions import db
from flask_jwt_extended import jwt_required, get_jwt_identity
from app.utils.decorators import audit_log

user_bp = Blueprint('user', __name__)


# ==============================================================================
# 用户偏好配置 API
# ==============================================================================

@user_bp.route('/preferences', methods=['GET'])
@jwt_required()
def get_preferences():
    """
    读取当前用户的 preferences 字段
    GET /api/v1/user/preferences
    """
    try:
        user_id = get_jwt_identity()
        user = SysUser.query.get(user_id)
        if not user:
            return jsonify({'code': 404, 'msg': '用户不存在'}), 404
        return jsonify({
            'code': 200,
            'msg': 'success',
            'data': user.preferences or {}
        })
    except Exception as e:
        current_app.logger.error(f'读取用户偏好失败: {str(e)}')
        return jsonify({'code': 500, 'msg': f'读取失败: {str(e)}'}), 500


@user_bp.route('/preferences', methods=['PUT'])
@jwt_required()
@audit_log(module_name='系统', action_type='修改偏好配置')
def save_preferences():
    """
    保存/更新当前用户的 preferences 字段
    PUT /api/v1/user/preferences
    入参: 任意 JSON 字典
    """
    try:
        user_id = get_jwt_identity()
        user = SysUser.query.get(user_id)
        if not user:
            return jsonify({'code': 404, 'msg': '用户不存在'}), 404

        new_prefs = request.get_json()
        if new_prefs is None or not isinstance(new_prefs, dict):
            return jsonify({'code': 400, 'msg': '参数必须是 JSON 对象'}), 400

        user.preferences = new_prefs
        db.session.commit()
        return jsonify({
            'code': 200,
            'msg': '保存成功',
            'data': user.preferences
        })
    except Exception as e:
        db.session.rollback()
        current_app.logger.error(f'保存用户偏好失败: {str(e)}')
        return jsonify({'code': 500, 'msg': f'保存失败: {str(e)}'}), 500