/*
 *  Copyright (C) 2012-2018 Team Kodi
 *  This file is part of Kodi - https://kodi.tv
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 *  See LICENSES/README.md for more information.
 */

#include "GameClientProperties.h"
#include "GameClient.h"
#include "ServiceBroker.h"
#include "addons/IAddon.h"
#include "addons/AddonManager.h"
#include "addons/GameResource.h"
#include "dialogs/GUIDialogYesNo.h"
#include "filesystem/Directory.h"
#include "filesystem/SpecialProtocol.h"
#include "guilib/LocalizeStrings.h"
#include "messaging/helpers/DialogOKHelper.h"
#include "utils/log.h"
#include "utils/Variant.h"

#include <cstring>

using namespace KODI;
using namespace ADDON;
using namespace GAME;
using namespace XFILE;

#define GAME_CLIENT_RESOURCES_DIRECTORY  "resources"

CGameClientProperties::CGameClientProperties(const CGameClient& parent, AddonProps_Game& props)
  : m_parent(parent),
    m_properties(props)
{
}

void CGameClientProperties::ReleaseResources(void)
{
  for (std::vector<char*>::const_iterator it = m_proxyDllPaths.begin(); it != m_proxyDllPaths.end(); ++it)
    delete[] *it;
  m_proxyDllPaths.clear();

  for (std::vector<char*>::const_iterator it = m_resourceDirectories.begin(); it != m_resourceDirectories.end(); ++it)
    delete[] *it;
  m_resourceDirectories.clear();

  for (std::vector<char*>::const_iterator it = m_extensions.begin(); it != m_extensions.end(); ++it)
    delete[] *it;
  m_extensions.clear();
}

bool CGameClientProperties::InitializeProperties(void)
{
  ReleaseResources();

  ADDON::VECADDONS addons;
  if (!GetProxyAddons(addons))
    return false;

  m_properties.game_client_dll_path     = GetLibraryPath();
  m_properties.proxy_dll_paths          = GetProxyDllPaths(addons);
  m_properties.proxy_dll_count          = GetProxyDllCount();
  m_properties.resource_directories     = GetResourceDirectories();
  m_properties.resource_directory_count = GetResourceDirectoryCount();
  m_properties.profile_directory        = GetProfileDirectory();
  m_properties.supports_vfs             = m_parent.SupportsVFS();
  m_properties.extensions               = GetExtensions();
  m_properties.extension_count          = GetExtensionCount();

  return true;
}

const char* CGameClientProperties::GetLibraryPath(void)
{
  if (m_strLibraryPath.empty())
  {
    // Get the parent add-on's real path
    std::string strLibPath = m_parent.CAddonDll::LibPath();
    m_strLibraryPath = CSpecialProtocol::TranslatePath(strLibPath);
  }
  return m_strLibraryPath.c_str();
}

const char** CGameClientProperties::GetProxyDllPaths(const ADDON::VECADDONS &addons)
{
  if (m_proxyDllPaths.empty())
  {
    for (const auto &addon : addons)
      AddProxyDll(std::static_pointer_cast<CGameClient>(addon));
  }

  if (!m_proxyDllPaths.empty())
    return const_cast<const char**>(m_proxyDllPaths.data());

  return nullptr;
}

unsigned int CGameClientProperties::GetProxyDllCount(void) const
{
  return static_cast<unsigned int>(m_proxyDllPaths.size());
}

const char** CGameClientProperties::GetResourceDirectories(void)
{
  if (m_resourceDirectories.empty())
  {
    // Add all other game resources
    const auto& dependencies = m_parent.GetDependencies();
    for (auto it = dependencies.begin(); it != dependencies.end(); ++it)
    {
      const std::string& strAddonId = it->id;
      AddonPtr addon;
      if (CServiceBroker::GetAddonMgr().GetAddon(strAddonId, addon, ADDON_RESOURCE_GAMES))
      {
        std::shared_ptr<CGameResource> resource = std::static_pointer_cast<CGameResource>(addon);

        std::string resourcePath = resource->GetFullPath("");

        char* resourceDir = new char[resourcePath.length() + 1];
        std::strcpy(resourceDir, resourcePath.c_str());
        m_resourceDirectories.push_back(resourceDir);
      }
    }

    // Add resource directories for profile and path
    std::string addonProfile = CSpecialProtocol::TranslatePath(m_parent.Profile());
    std::string addonPath = m_parent.Path();

    addonProfile = URIUtils::AddFileToFolder(addonProfile, GAME_CLIENT_RESOURCES_DIRECTORY);
    addonPath = URIUtils::AddFileToFolder(addonPath, GAME_CLIENT_RESOURCES_DIRECTORY);

    if (!CDirectory::Exists(addonProfile))
    {
      CLog::Log(LOGDEBUG, "Creating resource directory: %s", addonProfile.c_str());
      CDirectory::Create(addonProfile);
    }

    // Only add user profile directory if non-empty
    CFileItemList items;
    if (CDirectory::GetDirectory(addonProfile, items, "", DIR_FLAG_DEFAULTS))
    {
      if (!items.IsEmpty())
      {
        char* addonProfileDir = new char[addonProfile.length() + 1];
        std::strcpy(addonProfileDir, addonProfile.c_str());
        m_resourceDirectories.push_back(addonProfileDir);
      }
    }

    char* addonPathDir = new char[addonPath.length() + 1];
    std::strcpy(addonPathDir, addonPath.c_str());
    m_resourceDirectories.push_back(addonPathDir);
  }

  if (!m_resourceDirectories.empty())
    return const_cast<const char**>(m_resourceDirectories.data());

  return nullptr;
}

unsigned int CGameClientProperties::GetResourceDirectoryCount(void) const
{
  return static_cast<unsigned int>(m_resourceDirectories.size());
}

const char* CGameClientProperties::GetProfileDirectory(void)
{
  if (m_strProfileDirectory.empty())
    m_strProfileDirectory = CSpecialProtocol::TranslatePath(m_parent.Profile());

  return m_strProfileDirectory.c_str();
}

const char** CGameClientProperties::GetExtensions(void)
{
  for (auto& extension : m_parent.GetExtensions())
  {
    char* ext = new char[extension.length() + 1];
    std::strcpy(ext, extension.c_str());
    m_extensions.push_back(ext);
  }

  return !m_extensions.empty() ? const_cast<const char**>(m_extensions.data()) : nullptr;
}

unsigned int CGameClientProperties::GetExtensionCount(void) const
{
  return static_cast<unsigned int>(m_extensions.size());
}

bool CGameClientProperties::GetProxyAddons(ADDON::VECADDONS &addons)
{
  ADDON::VECADDONS ret;
  std::vector<std::string> missingDependencies; // ID or name of missing dependencies

  for (const auto &dependency : m_parent.GetDependencies())
  {
    AddonPtr addon;
    if (CServiceBroker::GetAddonMgr().GetAddon(dependency.id, addon, ADDON_UNKNOWN, false))
    {
      // If add-on is disabled, ask the user to enable it
      if (CServiceBroker::GetAddonMgr().IsAddonDisabled(dependency.id))
      {
        // "Failed to play game"
        // "This game depends on a disabled add-on. Would you like to enable it?"
        if (CGUIDialogYesNo::ShowAndGetInput(CVariant{ 35210 }, CVariant{ 35215 }))
        {
          if (!CServiceBroker::GetAddonMgr().EnableAddon(dependency.id))
          {
            CLog::Log(LOGERROR, "Failed to enable add-on %s", dependency.id.c_str());
            missingDependencies.emplace_back(addon->Name());
            addon.reset();
          }
        }
        else
        {
          CLog::Log(LOGERROR, "User chose to not enable add-on %s", dependency.id.c_str());
          missingDependencies.emplace_back(addon->Name());
          addon.reset();
        }
      }

      if (addon && addon->Type() == ADDON_GAMEDLL)
        ret.emplace_back(std::move(addon));
    }
    else
    {
      if (dependency.optional)
      {
        CLog::Log(LOGDEBUG, "Missing optional dependency %s", dependency.id.c_str());
      }
      else
      {
        CLog::Log(LOGERROR, "Missing mandatory dependency %s", dependency.id.c_str());
        missingDependencies.emplace_back(dependency.id);
      }
    }
  }

  if (!missingDependencies.empty())
  {
    std::string strDependencies = StringUtils::Join(missingDependencies, ", ");
    std::string dialogText = StringUtils::Format(g_localizeStrings.Get(35223), strDependencies);

    // "Failed to play game"
    // "Add-on is incompatible due to unmet dependencies."
    // ""
    // "Missing: {0:s}"
    MESSAGING::HELPERS::ShowOKDialogLines(CVariant{ 35210 }, CVariant{ 24104 }, CVariant{ "" }, CVariant{ dialogText });

    return false;
  }

  addons = std::move(ret);
  return true;
}

void CGameClientProperties::AddProxyDll(const GameClientPtr& gameClient)
{
  // Get the add-on's real path
  std::string strLibPath = gameClient->CAddon::LibPath();

  // Ignore add-on if it is already added
  if (!HasProxyDll(strLibPath))
  {
    char* libPath = new char[strLibPath.length() + 1];
    std::strcpy(libPath, strLibPath.c_str());
    m_proxyDllPaths.push_back(libPath);
  }
}

bool CGameClientProperties::HasProxyDll(const std::string& strLibPath) const
{
  for (std::vector<char*>::const_iterator it = m_proxyDllPaths.begin(); it != m_proxyDllPaths.end(); ++it)
  {
    if (strLibPath == *it)
      return true;
  }
  return false;
}
