#pragma once

#include <string>

namespace mrbesen::util {

const std::string emptyString = "";

unsigned int count(const std::string& str, char c); //count occurances of c in str

bool equalsIgnoreCase(const std::string& a, const std::string& b, size_t max = std::string::npos);

void toLower(const std::string& in, std::string& out); //copy toLower
void toLower(std::string& in); //inplace toLower

bool endsWith(const std::string& str, const std::string& ending);
bool startsWith(const std::string& str, const std::string& start);

//makes sure a string does NOT ends or starts with a specific sub string
bool removeEnd(std::string& str, const std::string& ending); //returns true on change (ending = "" -> returns false)
bool removeStart(std::string& str, const std::string& start);

//makes sure a string DOES ends or starts with a specific sub string
bool insertEnd(std::string& str, const std::string& ending);
bool insertStart(std::string& str, const std::string& start);

// splits a string into components. It removes the token from the strings. Retunrs the Count of elements in the array after the function completes.
unsigned int split(const std::string& str, const std::string& token, std::string* out, unsigned int count);

bool trim(std::string& str, char c = ' '); //return true if the string was changed
bool trimOnce(std::string& str, char c = ' ');

std::string bytesToBase16(char* buffer, unsigned int len);
std::string bytesToBase64(char* buffer, unsigned int len);

bool replace(std::string& modify, const std::string& search, char replace);
bool replace(std::string& modify, const std::string& search, const std::string& replacement);

class StringSpliterator : public std::iterator<std::output_iterator_tag, std::string> {
public:
	StringSpliterator(const std::string& d, const std::string& token);
	StringSpliterator(const std::string& d, char token);
	~StringSpliterator();

	std::string operator*() const;
	StringSpliterator& operator++();
	StringSpliterator operator++(int);
	operator bool() const;
private:
	void findNext();

	std::string data;
	std::string token;
	size_t lasttok = 0;
	size_t nexttok = 0;
};

}