/*
 * Copyright (c) 2018, Arm Limited and affiliates.
 * SPDX-License-Identifier: Apache-2.0
 *
 * 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.
 */

#ifndef QUECTEL_M26_CELLULARSTACK_H_
#define QUECTEL_M26_CELLULARSTACK_H_

#include "AT_CellularStack.h"

using namespace std::chrono_literals;

namespace mbed {

#define M26_CREATE_SOCKET_TIMEOUT 75s
#define M26_SENT_BYTE_MAX 1460
#define M26_RECV_BYTE_MAX 1024

class QUECTEL_M26_CellularStack : public AT_CellularStack {
public:
    QUECTEL_M26_CellularStack(ATHandler &atHandler, int cid, nsapi_ip_stack_t stack_type, AT_CellularDevice &device);
    virtual ~QUECTEL_M26_CellularStack();

    /** Initialize
     *  Must be called immediately after constructor to initialize IP stack on the modem.
     *  @return NSAPI_ERROR_OK on success
     */
    nsapi_error_t socket_stack_init();

protected: // NetworkStack

    virtual nsapi_error_t socket_listen(nsapi_socket_t handle, int backlog);

    virtual nsapi_error_t socket_accept(nsapi_socket_t server,
                                        nsapi_socket_t *handle, SocketAddress *address = 0);

    virtual nsapi_error_t socket_bind(nsapi_socket_t handle, const SocketAddress &address);

    virtual nsapi_error_t socket_connect(nsapi_socket_t handle, const SocketAddress &address);

protected: // AT_CellularStack

    virtual nsapi_error_t socket_close_impl(int sock_id);

    virtual nsapi_error_t create_socket_impl(CellularSocket *socket);

    virtual nsapi_size_or_error_t socket_sendto_impl(CellularSocket *socket, const SocketAddress &address,
                                                     const void *data, nsapi_size_t size);

    virtual nsapi_size_or_error_t socket_recvfrom_impl(CellularSocket *socket, SocketAddress *address,
                                                       void *buffer, nsapi_size_t size);

private:
    // URC handlers
    void urc_qiurc();
    void socket_closed(int sock_id);
    void socket_closed_0();
    void socket_closed_1();
    void socket_closed_2();
    void socket_closed_3();
    void socket_closed_4();
    void socket_closed_5();

    void handle_open_socket_response(int &modem_connect_id, int &err);
};
} // namespace mbed
#endif /* QUECTEL_M26_CELLULARSTACK_H_ */