/*
 *   Copyright (c) 2025 Project CHIP Authors
 *   All rights reserved.
 *
 *   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.
 *
 */

#include <commands/clusters/SubscriptionsCommands.h>
#include <commands/common/Commands.h>
#include <commands/delay/Commands.h>
#include <commands/interactive/Commands.h>
#include <commands/interactive/InteractiveCommands.h>
#include <commands/liveview/Commands.h>
#include <commands/pairing/Commands.h>
#include <commands/webrtc/Commands.h>
#include <device-manager/DeviceManager.h>
#include <webrtc-manager/WebRTCManager.h>
#include <zap-generated/cluster/Commands.h>

#include <csignal>
#include <iostream>
#include <string>
#include <unistd.h>
#include <vector>

using namespace chip;

namespace {

void StopSignalHandler(int signum)
{
    DeviceLayer::SystemLayer().ScheduleLambda([]() { StopInteractiveEventLoop(); });
}

} // namespace

// ================================================================================
// Main Code
// ================================================================================
int main(int argc, char * argv[])
{
    // ── SIGINT / SIGTERM: stop event‑loop ────────────────────────────────
    struct sigaction saStop = {};
    saStop.sa_handler       = StopSignalHandler;
    sigemptyset(&saStop.sa_mask);
    sigaction(SIGINT, &saStop, nullptr);
    sigaction(SIGTERM, &saStop, nullptr);

    // ── SIGCHLD: reap exited children (video pipelines) ─────────────────
    struct sigaction saChld = {};
    saChld.sa_handler       = camera::DeviceManager::VideoStreamSignalHandler;
    saChld.sa_flags         = SA_NOCLDSTOP; // ignore SIGSTOP/CONT
    sigemptyset(&saChld.sa_mask);
    sigaction(SIGCHLD, &saChld, nullptr);

    // Convert command line arguments to a vector of strings for easier manipulation
    std::vector<std::string> args(argv, argv + argc);

    // Check if "interactive" is not in the arguments
    if (args.size() < 3 || args[1] != "interactive")
    {
        // Insert "interactive" and "start" after the executable name
        args.insert(args.begin() + 1, "interactive");
        args.insert(args.begin() + 2, "start");
    }

    ExampleCredentialIssuerCommands credIssuerCommands;
    Commands & commands = CommandMgr();

    registerCommandsInteractive(commands, &credIssuerCommands);
    registerCommandsPairing(commands, &credIssuerCommands);
    registerClusters(commands, &credIssuerCommands);
    registerCommandsDelay(commands, &credIssuerCommands);
    registerCommandsSubscriptions(commands, &credIssuerCommands);
    registerCommandsWebRTC(commands, &credIssuerCommands);
    registerCommandsLiveView(commands, &credIssuerCommands);

    WebRTCManager::Instance().Init();

    std::vector<char *> c_args;
    for (auto & arg : args)
    {
        ChipLogError(Camera, "Args: %s", arg.c_str());
        c_args.push_back(const_cast<char *>(arg.c_str()));
    }

    return commands.Run(static_cast<int>(c_args.size()), c_args.data());
}