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#include "fsCLocalisedStrings.h"

#include <algorithm>
#include <fsCore/src/debug/fsAssert.h>
#include <fsCore/fsIFile.h>

fsCLocalisedStrings* fsCLocalisedStrings::mInstance = nullptr;
const fsStr fsCLocalisedStrings::mMissingString("#####");
const fsStr fsCLocalisedStrings::mStringsFilename("strings");


fsBool fsCLocalisedStrings::emptyStringKeyCheck(fsStr const& pKey)
{
	return pKey == "emptystring";
}

void fsCLocalisedStrings::formattingRemove()
{
	for (std::map<fsStr, fsStr>::iterator i = mEntries.begin(); i != mEntries.end(); ++i)
	{
		i->second.formattingRemove();
	}
}

fsBool fsCLocalisedStrings::localisedConversationExistsGet(const fsStr& pPartKey)
{
	const fsStr key = downcased(pPartKey);

	for (const VarTableMap::value_type& myPair : mInstance->mEntries)
	{
		if (0 == myPair.first.find(key))
		{<--- Consider using std::any_of algorithm instead of a raw loop.
			return true;
		}
	}
	return false;
}

std::vector<fsStr> fsCLocalisedStrings::localisedConversationGet(const fsStr& pPartKey)
{
	return mInstance->partKeyCollectionGet(pPartKey);
}

fsStr fsCLocalisedStrings::localisedStringGet(const fsStr& pKey)
{
#if !defined fsRELEASE
	if (pKey.emptyGet())
	{
		fsAssert(false, "Empty key being searched for in localised file.\n");
		return mMissingString;
	}
#endif

	const fsStr key = downcased(pKey);
	if (emptyStringKeyCheck(key))
	{
		return "";
	}

	fsAssert(mInstance != nullptr, "Not created.\n");
	std::map<fsStr, fsStr>::const_iterator entry = mInstance->mEntries.find(key);
	if (entry != mInstance->mEntries.end())
	{
		return entry->second;
	}

	//	fsAssert( false, "Missing string : %s\n", pKey.utf8Get() );
	return mMissingString;
}

fsBool fsCLocalisedStrings::localisedStringGetIfExists(const fsStr& pKey, fsStr& pOutString)
{
	fsAssert(mInstance != nullptr, "Not created.\n");
	const fsStr key = downcased(pKey);

	std::map<fsStr, fsStr>::const_iterator entry = mInstance->mEntries.find(key);
	if (entry != mInstance->mEntries.end())
	{
		pOutString = entry->second;
		return true;
	}

	return false;
}

fsBool fsCLocalisedStrings::loadFromExcelSheet(const fsStr& pFilename)
{
	const fsCResourceName xmlName(pFilename + ".xml", fsCResourceName::eRES_LOCATION_ASSETS);
	if (fsIFile::fileExistsGet(xmlName))
	{
		mInstance->read(xmlName.nameGet(), mInstance);
		return true;
	}
	return false;
}

fsBool fsCLocalisedStrings::loadFromVarTable(const fsStr& pFilename)
{
	const fsCResourceName xmlName(pFilename + ".txt", fsCResourceName::eRES_LOCATION_ASSETS);
	if (fsIFile::fileExistsGet(xmlName))
	{
		load(xmlName);
		return true;
	}
	return false;
}

void fsCLocalisedStrings::create()
{
	delete mInstance;
	mInstance = new fsCLocalisedStrings();

	std::vector<fsStr> stringsFiles = {
		"strings",
		"stringsDialogue",
		"stringsItems",
		"stringsMain",
		"stringsPuzzles",
	};
	std::for_each(std::begin(stringsFiles), std::end(stringsFiles),
		[](fsStr& filename)<--- Parameter 'filename' can be declared as reference to const
		{
			if (!mInstance->loadFromExcelSheet(filename))
			{
				mInstance->loadFromVarTable(filename);
			}
		});

	mInstance->formattingRemove();
}

void fsCLocalisedStrings::destroy()
{
	delete mInstance;
	mInstance = nullptr;
}

fsCLocalisedStrings::fsCLocalisedStrings()
{
}

fsCLocalisedStrings::~fsCLocalisedStrings()
{
}