/*
Copyright (c) 2018 Intel Corporation

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#pragma once

#include "app.hpp"
#include "dbus_utility.hpp"
#include "query.hpp"
#include "registries/privilege_registry.hpp"

#include <boost/url/format.hpp>
#include <nlohmann/json.hpp>
#include <sdbusplus/asio/property.hpp>

#include <optional>
#include <string_view>
#include <variant>
namespace redfish
{

inline std::string getRoleFromPrivileges(std::string_view priv)
{
    if (priv == "priv-admin")
    {
        return "Administrator";
    }
    if (priv == "priv-user")
    {
        return "ReadOnly";
    }
    if (priv == "priv-operator")
    {
        return "Operator";
    }
    return "";
}

inline std::optional<nlohmann::json::array_t>
    getAssignedPrivFromRole(std::string_view role)
{
    nlohmann::json::array_t privArray;
    if (role == "Administrator")
    {
        privArray.emplace_back("Login");
        privArray.emplace_back("ConfigureManager");
        privArray.emplace_back("ConfigureUsers");
        privArray.emplace_back("ConfigureSelf");
        privArray.emplace_back("ConfigureComponents");
    }
    else if (role == "Operator")
    {
        privArray.emplace_back("Login");
        privArray.emplace_back("ConfigureSelf");
        privArray.emplace_back("ConfigureComponents");
    }
    else if (role == "ReadOnly")
    {
        privArray.emplace_back("Login");
        privArray.emplace_back("ConfigureSelf");
    }
    else
    {
        return std::nullopt;
    }
    return privArray;
}

inline void requestRoutesRoles(App& app)
{
    BMCWEB_ROUTE(app, "/redfish/v1/AccountService/Roles/<str>/")
        .privileges(redfish::privileges::getRole)
        .methods(boost::beast::http::verb::get)(
            [&app](const crow::Request& req,
                   const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
                   const std::string& roleId) {
                if (!redfish::setUpRedfishRoute(app, req, asyncResp))
                {
                    return;
                }

                std::optional<nlohmann::json::array_t> privArray =
                    getAssignedPrivFromRole(roleId);
                if (!privArray)
                {
                    messages::resourceNotFound(asyncResp->res, "Role", roleId);

                    return;
                }

                asyncResp->res.jsonValue["@odata.type"] = "#Role.v1_2_2.Role";
                asyncResp->res.jsonValue["Name"] = "User Role";
                asyncResp->res.jsonValue["Description"] = roleId + " User Role";
                asyncResp->res.jsonValue["OemPrivileges"] =
                    nlohmann::json::array();
                asyncResp->res.jsonValue["IsPredefined"] = true;
                asyncResp->res.jsonValue["Id"] = roleId;
                asyncResp->res.jsonValue["RoleId"] = roleId;
                asyncResp->res.jsonValue["@odata.id"] = boost::urls::format(
                    "/redfish/v1/AccountService/Roles/{}", roleId);
                asyncResp->res.jsonValue["AssignedPrivileges"] =
                    std::move(*privArray);
            });
}

inline void requestRoutesRoleCollection(App& app)
{
    BMCWEB_ROUTE(app, "/redfish/v1/AccountService/Roles/")
        .privileges(redfish::privileges::getRoleCollection)
        .methods(boost::beast::http::verb::get)(
            [&app](const crow::Request& req,
                   const std::shared_ptr<bmcweb::AsyncResp>& asyncResp) {
                if (!redfish::setUpRedfishRoute(app, req, asyncResp))
                {
                    return;
                }

                asyncResp->res.jsonValue["@odata.id"] =
                    "/redfish/v1/AccountService/Roles";
                asyncResp->res.jsonValue["@odata.type"] =
                    "#RoleCollection.RoleCollection";
                asyncResp->res.jsonValue["Name"] = "Roles Collection";
                asyncResp->res.jsonValue["Description"] = "BMC User Roles";

                sdbusplus::asio::getProperty<std::vector<std::string>>(
                    *crow::connections::systemBus,
                    "xyz.openbmc_project.User.Manager",
                    "/xyz/openbmc_project/user",
                    "xyz.openbmc_project.User.Manager", "AllPrivileges",
                    [asyncResp](const boost::system::error_code& ec,
                                const std::vector<std::string>& privList) {
                        if (ec)
                        {
                            messages::internalError(asyncResp->res);
                            return;
                        }
                        nlohmann::json& memberArray =
                            asyncResp->res.jsonValue["Members"];
                        memberArray = nlohmann::json::array();
                        for (const std::string& priv : privList)
                        {
                            std::string role = getRoleFromPrivileges(priv);
                            if (!role.empty())
                            {
                                nlohmann::json::object_t member;
                                member["@odata.id"] = boost::urls::format(
                                    "/redfish/v1/AccountService/Roles/{}",
                                    role);
                                memberArray.emplace_back(std::move(member));
                            }
                        }
                        asyncResp->res.jsonValue["Members@odata.count"] =
                            memberArray.size();
                    });
            });
}

} // namespace redfish