#pragma once
using namespace std;

#include <string>
#include <vector>
#include <utility>

class AuthModule
{
public:
	virtual ~AuthModule() = default;

	virtual const wchar_t *schemeName() = 0;
	virtual vector<wstring> supportedVariations() = 0;
	virtual vector<pair<wstring, wstring>> getSettings(const wstring &variation) = 0;
	virtual bool onAuthData(const vector<pair<wstring, wstring>> &fields, wstring &outUid, wstring &outUsername) = 0;

	bool validate(const wstring &uid, const wstring &username);

protected:
	bool extractIdentity(const vector<pair<wstring, wstring>> &fields, wstring &outUid, wstring &outUsername);
};

class ElyByAuthModule : public AuthModule
{
protected:
	wstring endpoint;

public:
	ElyByAuthModule(const wstring &endpoint = L"https://authserver.ely.by");

	const wchar_t *schemeName() override;
	vector<wstring> supportedVariations() override;
	vector<pair<wstring, wstring>> getSettings(const wstring &variation) override;
	bool onAuthData(const vector<pair<wstring, wstring>> &fields, wstring &outUid, wstring &outUsername) override;
};

class MojangAuthModule : public ElyByAuthModule
{
public:
	MojangAuthModule();

	const wchar_t *schemeName() override;
	vector<wstring> supportedVariations() override;
};

class KeypairOfflineAuthModule : public AuthModule
{
public:
	const wchar_t *schemeName() override;
	vector<wstring> supportedVariations() override;
	vector<pair<wstring, wstring>> getSettings(const wstring &variation) override;
	bool onAuthData(const vector<pair<wstring, wstring>> &fields, wstring &outUid, wstring &outUsername) override;
};

class OfflineAuthModule : public AuthModule
{
public:
	const wchar_t *schemeName() override;
	vector<wstring> supportedVariations() override;
	vector<pair<wstring, wstring>> getSettings(const wstring &variation) override;
	bool onAuthData(const vector<pair<wstring, wstring>> &fields, wstring &outUid, wstring &outUsername) override;
};