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 *     derived from this software without specific prior written permission.
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#include <gmock/gmock.h>
#include <gtest/gtest.h>

#include <openthread/border_agent.h>
#include <openthread/dataset.h>
#include <openthread/dataset_ftd.h>
#include <openthread/instance.h>
#include <openthread/ip6.h>
#include <openthread/thread.h>
#include <openthread/platform/time.h>
#include "net/socket.hpp"
#include "openthread/error.h"
#include "openthread/message.h"
#include "openthread/udp.h"

#include "fake_platform.hpp"
#include "mock_callback.hpp"

#include "core/net/ip6_address.hpp"

using namespace ot;

using MockReceiveCallback = MockCallback<void, otMessage *, const otMessageInfo *>;

class UdpTest : public ::testing::Test
{
protected:
    void SetUp() override
    {
        otOperationalDataset     dataset;
        otOperationalDatasetTlvs datasetTlvs;

        ASSERT_EQ(OT_ERROR_NONE, otDatasetCreateNewNetwork(FakePlatform::CurrentInstance(), &dataset));

        otDatasetConvertToTlvs(&dataset, &datasetTlvs);
        ASSERT_EQ(OT_ERROR_NONE, otDatasetSetActiveTlvs(FakePlatform::CurrentInstance(), &datasetTlvs));

        ASSERT_EQ(OT_ERROR_NONE, otIp6SetEnabled(FakePlatform::CurrentInstance(), true));
        ASSERT_EQ(OT_ERROR_NONE, otThreadSetEnabled(FakePlatform::CurrentInstance(), true));

        mFakePlatform.GoInMs(10000);
    }

    FakePlatform mFakePlatform;
};

TEST_F(UdpTest, shouldSuccessWhenBindingMulticastAddressAndReceiveFromIt)
{
    otUdpSocket         receiver;
    MockReceiveCallback receiverCallback;
    ASSERT_EQ(OT_ERROR_NONE, otUdpOpen(FakePlatform::CurrentInstance(), &receiver,
                                       &MockReceiveCallback::CallWithContextAhead, &receiverCallback));

    Ip6::SockAddr listenAddr;

    ASSERT_EQ(OT_ERROR_NONE, listenAddr.GetAddress().FromString("ff02::21"));
    listenAddr.SetPort(2121);

    ASSERT_EQ(OT_ERROR_NONE, otUdpBind(FakePlatform::CurrentInstance(), &receiver, &listenAddr, OT_NETIF_UNSPECIFIED));

    ASSERT_EQ(OT_ERROR_NONE, otIp6SubscribeMulticastAddress(FakePlatform::CurrentInstance(), &listenAddr.mAddress));
    EXPECT_CALL(receiverCallback, Call).Times(1);

    otUdpSocket         sender{};
    MockReceiveCallback senderCallback;
    ASSERT_EQ(OT_ERROR_NONE, otUdpOpen(FakePlatform::CurrentInstance(), &sender,
                                       &MockReceiveCallback::CallWithContextAhead, &senderCallback));
    otMessageInfo messageInfo{};

    messageInfo.mPeerAddr      = listenAddr.mAddress;
    messageInfo.mPeerPort      = listenAddr.mPort;
    messageInfo.mMulticastLoop = true;

    otMessage *message = otUdpNewMessage(FakePlatform::CurrentInstance(), nullptr);
    ASSERT_NE(message, nullptr);
    ASSERT_EQ(otMessageAppend(message, "multicast", sizeof("multicast") - 1), OT_ERROR_NONE);

    ASSERT_EQ(OT_ERROR_NONE, otUdpSend(FakePlatform::CurrentInstance(), &sender, message, &messageInfo));

    mFakePlatform.GoInMs(1000);

    ASSERT_EQ(OT_ERROR_NONE, otUdpClose(FakePlatform::CurrentInstance(), &sender));
    ASSERT_EQ(OT_ERROR_NONE, otUdpClose(FakePlatform::CurrentInstance(), &receiver));
}

TEST_F(UdpTest, shouldSuccessWhenBindingMulticastAddressAndNoReceiveFromDifferentMulticast)
{
    otUdpSocket         receiver;
    MockReceiveCallback receiverCallback;
    ASSERT_EQ(OT_ERROR_NONE, otUdpOpen(FakePlatform::CurrentInstance(), &receiver,
                                       &MockReceiveCallback::CallWithContextAhead, &receiverCallback));

    Ip6::Address  group1;
    Ip6::Address  group2;
    Ip6::SockAddr listenAddr;

    ASSERT_EQ(OT_ERROR_NONE, group1.FromString("ff02::21"));
    ASSERT_EQ(OT_ERROR_NONE, group2.FromString("ff02::22"));
    listenAddr.SetAddress(group1);
    listenAddr.SetPort(2121);

    ASSERT_EQ(OT_ERROR_NONE, otUdpBind(FakePlatform::CurrentInstance(), &receiver, &listenAddr, OT_NETIF_UNSPECIFIED));

    ASSERT_EQ(OT_ERROR_NONE, otIp6SubscribeMulticastAddress(FakePlatform::CurrentInstance(), &group1));
    ASSERT_EQ(OT_ERROR_NONE, otIp6SubscribeMulticastAddress(FakePlatform::CurrentInstance(), &group2));
    EXPECT_CALL(receiverCallback, Call).Times(0);

    otUdpSocket         sender{};
    MockReceiveCallback senderCallback;
    ASSERT_EQ(OT_ERROR_NONE, otUdpOpen(FakePlatform::CurrentInstance(), &sender,
                                       &MockReceiveCallback::CallWithContextAhead, &senderCallback));
    otMessageInfo messageInfo{};

    messageInfo.mPeerAddr      = group2;
    messageInfo.mPeerPort      = listenAddr.mPort;
    messageInfo.mMulticastLoop = true;

    otMessage *message = otUdpNewMessage(FakePlatform::CurrentInstance(), nullptr);
    ASSERT_NE(message, nullptr);
    ASSERT_EQ(otMessageAppend(message, "multicast", sizeof("multicast") - 1), OT_ERROR_NONE);

    ASSERT_EQ(OT_ERROR_NONE, otUdpSend(FakePlatform::CurrentInstance(), &sender, message, &messageInfo));

    mFakePlatform.GoInMs(1000);

    ASSERT_EQ(OT_ERROR_NONE, otUdpClose(FakePlatform::CurrentInstance(), &sender));
    ASSERT_EQ(OT_ERROR_NONE, otUdpClose(FakePlatform::CurrentInstance(), &receiver));
}

TEST_F(UdpTest, shouldSuccessWhenBindingMulticastAddressAndNoReceiveIfNotSubscribed)
{
    otUdpSocket         receiver;
    MockReceiveCallback receiverCallback;
    ASSERT_EQ(OT_ERROR_NONE, otUdpOpen(FakePlatform::CurrentInstance(), &receiver,
                                       &MockReceiveCallback::CallWithContextAhead, &receiverCallback));

    Ip6::SockAddr listenAddr;

    ASSERT_EQ(OT_ERROR_NONE, listenAddr.GetAddress().FromString("ff02::21"));
    listenAddr.SetPort(2121);

    ASSERT_EQ(OT_ERROR_NONE, otUdpBind(FakePlatform::CurrentInstance(), &receiver, &listenAddr, OT_NETIF_UNSPECIFIED));

    EXPECT_CALL(receiverCallback, Call).Times(0);

    otUdpSocket         sender{};
    MockReceiveCallback senderCallback;
    ASSERT_EQ(OT_ERROR_NONE, otUdpOpen(FakePlatform::CurrentInstance(), &sender,
                                       &MockReceiveCallback::CallWithContextAhead, &senderCallback));
    otMessageInfo messageInfo{};

    messageInfo.mPeerAddr      = listenAddr.GetAddress();
    messageInfo.mPeerPort      = listenAddr.mPort;
    messageInfo.mMulticastLoop = true;

    otMessage *message = otUdpNewMessage(FakePlatform::CurrentInstance(), nullptr);
    ASSERT_NE(message, nullptr);
    ASSERT_EQ(otMessageAppend(message, "multicast", sizeof("multicast") - 1), OT_ERROR_NONE);

    ASSERT_EQ(OT_ERROR_NONE, otUdpSend(FakePlatform::CurrentInstance(), &sender, message, &messageInfo));

    mFakePlatform.GoInMs(1000);

    ASSERT_EQ(OT_ERROR_NONE, otUdpClose(FakePlatform::CurrentInstance(), &sender));
    ASSERT_EQ(OT_ERROR_NONE, otUdpClose(FakePlatform::CurrentInstance(), &receiver));
}