//
// Created by xemon on 15.12.22.
//
#include <SystemDelayInterface.h>
#include "AtCmdCommonProtected.h"
#include "AsciiStringParsingUtils.h"
#include "AtGsm_NetworkRegistrationStatus.h"

AtCommandResult AtGsm_NetworkRegistrationStatus(
        tAtCmd *env,
        tAtGsm_NetworkRegistrationReportMode *mode,
        tAtGsm_NetworkRegistrationState *state
) {


    AtCmdPrepare(env);
    AtCmdSendStatic(env, "AT+CREG?\r\n");

    uint32_t timeout = 1000;
    uint32_t endMs = SystemGetMs() + timeout;
    uint32_t leftMs = timeout;

    while ((AtCmdReceiveNextLine(env, leftMs) == AT_OK) && (SystemGetMs() < endMs)) {
        leftMs = endMs - SystemGetMs();

        if (AtCmdRxBeginWithStatic(env, "AT+CREG")) {
            AtCmdRxClear(env);
            continue;

        } else if (AtCmdRxBeginWithStatic(env, "ERROR")) {
            AtCmdRxClear(env);
            return AT_ERROR;

        } else if (AtCmdRxBeginWithStatic(env, "+CREG: ")) {

            char *front;
            char *div = env->rxBuffer.data + sizeof("+CREG:");
            char *end = div + env->rxBuffer.len;

            if (iAsciiStringMoveToNextParsingBlock(&front, &div, end, ',')) {
                *(char *) mode = *front;
            }

            if (iAsciiStringMoveToNextParsingBlock(&front, &div, end, ',')) {
                *(char *) state = *front;
            }

            AtCmdRxClear(env);
            return AT_OK;
        } else {
            AtCmdProcessUnresolvedLine(env);
            AtCmdRxClear(env);
            continue;
        }
    }

    return AT_ERROR;
}