# inventory-backend/app/api/v1/permission.py
from flask import Blueprint, request, jsonify, current_app
from flask_jwt_extended import jwt_required, get_jwt
from app.services.permission_service import PermissionService
from app.utils.decorators import permission_required, audit_log

permission_bp = Blueprint('permission', __name__)


def _get_operator_company():
    """从 JWT 获取当前操作者公司（None=超管）"""
    claims = get_jwt()
    role = claims.get('role', '')
    if role and role.upper() == 'SUPER_ADMIN':
        return None  # 超管不限制公司
    return claims.get('company_name', '')


@permission_bp.route('/tree', methods=['GET'])
@jwt_required()
@permission_required('system_permission')
def get_tree():
    """获取权限树"""
    try:
        data = PermissionService.get_permission_tree()
        return jsonify({'code': 200, 'msg': '获取成功', 'data': data}), 200
    except Exception as e:
        current_app.logger.error(f"Get Tree Failed: {str(e)}")
        return jsonify({'code': 500, 'msg': f'服务器内部错误: {str(e)}'}), 500


@permission_bp.route('/role/<string:role_code>', methods=['GET'])
@jwt_required()
@permission_required('system_permission')
def get_role_perms(role_code):
    """获取某个角色的权限列表（已选中的）"""
    try:
        company_name = _get_operator_company()
        data = PermissionService.get_role_permissions(role_code, company_name=company_name)
        return jsonify({'code': 200, 'msg': '获取成功', 'data': data}), 200
    except Exception as e:
        current_app.logger.error(f"Get Role Perms Failed: {str(e)}")
        return jsonify({'code': 500, 'msg': str(e)}), 500


@permission_bp.route('/assign', methods=['POST'])
@jwt_required()
@permission_required('system_permission:operation')
@audit_log(
    module='权限管理',
    action='分配',
    get_target_name_fn=lambda: request.get_json().get('role_code') if request.get_json() else None
)
def assign_perms():
    """保存权限分配（自动带上当前操作者的公司标识）"""
    try:
        data = request.get_json()
        role_code = data.get('role_code')
        permissions = data.get('permissions', [])

        company_name = _get_operator_company()
        PermissionService.assign_permissions(role_code, permissions, company_name=company_name)
        return jsonify({'code': 200, 'msg': '保存成功'}), 200
    except Exception as e:
        current_app.logger.error(f"Assign Perms Failed: {str(e)}")
        return jsonify({'code': 500, 'msg': str(e)}), 500