#include "device_manager.hpp"

#include "port/port_factory.hpp"

#include <phosphor-logging/lg2.hpp>
#include <sdbusplus/async.hpp>
#include <sdbusplus/server/manager.hpp>
#include <xyz/openbmc_project/Configuration/ModbusRTUDetect/client.hpp>

PHOSPHOR_LOG2_USING;

namespace phosphor::modbus::rtu
{

using ModbusRTUDetectIntf =
    sdbusplus::client::xyz::openbmc_project::configuration::ModbusRTUDetect<>;

static entity_manager::interface_list_t getInterfaces()
{
    entity_manager::interface_list_t interfaces;

    auto portInterfaces = PortIntf::PortFactory::getInterfaces();
    interfaces.insert(interfaces.end(), portInterfaces.begin(),
                      portInterfaces.end());
    interfaces.emplace_back(ModbusRTUDetectIntf::interface);

    return interfaces;
}

DeviceManager::DeviceManager(sdbusplus::async::context& ctx) :
    ctx(ctx),
    entityManager(ctx, getInterfaces(),
                  std::bind_front(&DeviceManager::processConfigAdded, this),
                  std::bind_front(&DeviceManager::processConfigRemoved, this))
{
    ctx.spawn(entityManager.handleInventoryGet());
    info("DeviceManager created successfully");
}

auto DeviceManager::processConfigAdded(
    const sdbusplus::message::object_path& objectPath,
    const std::string& interfaceName) -> sdbusplus::async::task<>
{
    debug("Config added for {PATH} with {INTF}", "PATH", objectPath, "INTF",
          interfaceName);
    if (interfaceName == ModbusRTUDetectIntf::interface && ports.size() == 0)
    {
        warning(
            "Skip processing ModbusRTUDetectIntf::interface as no serial ports detected yet");
        co_return;
    }

    auto portInterfaces = PortIntf::PortFactory::getInterfaces();
    if (std::find(portInterfaces.begin(), portInterfaces.end(),
                  interfaceName) != portInterfaces.end())
    {
        auto config = co_await PortIntf::PortFactory::getConfig(
            ctx, objectPath, interfaceName);
        if (!config)
        {
            error("Failed to get Port config for {PATH}", "PATH", objectPath);
            co_return;
        }

        try
        {
            ports[config->name] = PortIntf::PortFactory::create(ctx, *config);
        }
        catch (const std::exception& e)
        {
            error("Failed to create Port for {PATH} with {ERROR}", "PATH",
                  objectPath, "ERROR", e);
            co_return;
        }
    }
    else if (interfaceName == ModbusRTUDetectIntf::interface)
    {
        auto res = co_await InventoryIntf::config::getConfig(ctx, objectPath);
        if (!res)
        {
            error("Failed to get Inventory Device config for {PATH}", "PATH",
                  objectPath);
            co_return;
        }
        auto config = res.value();
        try
        {
            auto inventoryDevice =
                std::make_unique<InventoryIntf::Device>(ctx, config, ports);
            ctx.spawn(inventoryDevice->probePorts());
            inventoryDevices[config.name] = std::move(inventoryDevice);
        }
        catch (const std::exception& e)
        {
            error("Failed to create Inventory Device for {PATH} with {ERROR}",
                  "PATH", objectPath, "ERROR", e);
            co_return;
        }
    }
}

auto DeviceManager::processConfigRemoved(
    const sdbusplus::message::object_path& /*unused*/,
    const std::string& /*unused*/) -> sdbusplus::async::task<>
{
    // TODO: Implement this
    co_return;
}

} // namespace phosphor::modbus::rtu

auto main() -> int
{
    constexpr auto path = "/xyz/openbmc_project";
    constexpr auto serviceName = "xyz.openbmc_project.ModbusRTU";
    sdbusplus::async::context ctx;
    sdbusplus::server::manager_t manager{ctx, path};

    info("Creating Modbus device manager at {PATH}", "PATH", path);
    phosphor::modbus::rtu::DeviceManager deviceManager{ctx};

    ctx.request_name(serviceName);

    ctx.run();
    return 0;
}