#include "module_network_server.h"
#include "common/net/udp.h"
#include "common/utils.h"
#include "core/exception.h"
#include "imgui/imgui.h"
#include "logger.h"
#include <nng/nng.h>
#include <nng/protocol/pubsub0/pub.h>

namespace satdump
{
    namespace pipeline
    {
        namespace network
        {
            NetworkServerModule::NetworkServerModule(std::string input_file, std::string output_file_hint, nlohmann::json parameters) : ProcessingModule(input_file, output_file_hint, parameters)
            {
                if (parameters.contains("server_mode"))
                    mode = parameters["server_mode"].get<std::string>();

                if (parameters.count("pkt_size") > 0)
                    pkt_size = parameters["pkt_size"].get<int>();
                else
                    throw satdump_exception("pkt_size parameter must be present!");

                if (parameters.count("server_address") > 0)
                    address = parameters["server_address"].get<std::string>();
                else
                    throw satdump_exception("server_address parameter must be present!");

                if (parameters.count("server_port") > 0)
                    port = parameters["server_port"].get<int>();
                else
                    throw satdump_exception("server_port parameter must be present!");

                buffer = new uint8_t[pkt_size];
            }

            std::vector<ModuleDataType> NetworkServerModule::getInputTypes() { return {DATA_FILE, DATA_STREAM}; }

            std::vector<ModuleDataType> NetworkServerModule::getOutputTypes() { return {DATA_FILE}; }

            NetworkServerModule::~NetworkServerModule() { delete[] buffer; }

            void NetworkServerModule::process()
            {
                if (input_data_type == DATA_FILE)
                    filesize = getFilesize(d_input_file);
                else
                    filesize = 0;
                if (input_data_type == DATA_FILE)
                    data_in = std::ifstream(d_input_file, std::ios::binary);

                logger->info("Using input frames " + d_input_file);

                if (mode == "default")
                {
                    nng_socket sock;
                    nng_listener listener;

                    logger->info("Opening TCP socket on " + std::string("tcp://" + address + ":" + std::to_string(port)));

                    nng_pub0_open_raw(&sock);
                    nng_listener_create(&listener, sock, std::string("tcp://" + address + ":" + std::to_string(port)).c_str());
                    nng_listener_start(listener, NNG_FLAG_NONBLOCK);

                    while (input_data_type == DATA_FILE ? !data_in.eof() : input_active.load())
                    {
                        // Read a buffer
                        if (input_data_type == DATA_FILE)
                            data_in.read((char *)buffer, pkt_size);
                        else
                            input_fifo->read((uint8_t *)buffer, pkt_size);

                        nng_send(sock, buffer, pkt_size, NNG_FLAG_NONBLOCK);

                        if (input_data_type == DATA_FILE)
                            progress = data_in.tellg();
                    }

                    nng_listener_close(listener);
                }
                else if (mode == "udp_send")
                {
                    net::UDPClient udp_send((char *)address.c_str(), port);

                    while (input_data_type == DATA_FILE ? !data_in.eof() : input_active.load())
                    {
                        // Read a buffer
                        if (input_data_type == DATA_FILE)
                            data_in.read((char *)buffer, pkt_size);
                        else
                            input_fifo->read((uint8_t *)buffer, pkt_size);

                        udp_send.send(buffer, pkt_size);

                        if (input_data_type == DATA_FILE)
                            progress = data_in.tellg();
                    }
                }

                if (input_data_type == DATA_FILE)
                    data_in.close();
            }

            void NetworkServerModule::drawUI(bool window)
            {
                ImGui::Begin("Network Server", NULL, window ? 0 : NOWINDOW_FLAGS);

                ImGui::Text("Address  : ");
                ImGui::SameLine();
                ImGui::TextColored(style::theme.green, "%s", address.c_str());

                ImGui::Text("Port    : ");
                ImGui::SameLine();
                ImGui::TextColored(style::theme.green, UITO_C_STR(port));

                if (!d_is_streaming_input)
                    ImGui::ProgressBar((double)progress / (double)filesize, ImVec2(ImGui::GetContentRegionAvail().x, 20 * ui_scale));

                ImGui::End();
            }

            std::string NetworkServerModule::getID() { return "network_server"; }

            std::shared_ptr<ProcessingModule> NetworkServerModule::getInstance(std::string input_file, std::string output_file_hint, nlohmann::json parameters)
            {
                return std::make_shared<NetworkServerModule>(input_file, output_file_hint, parameters);
            }
        } // namespace network
    } // namespace pipeline
} // namespace satdump