#include <stdio.h>
#include <stdlib.h>
#include "mystring.h"

char* myreplaceall(char* str, char* suf1, char* suf2);
char* input_str();


int main() {
	printf("Input orig string:\n");
	char* message = (char*) input_str();
	printf("Input suffix to change:\n");
	char* suf1 = (char*)input_str();
	printf("Input suffix to change for:\n");
	char* suf2 = (char*)input_str();

	message = myreplaceall(message, suf1, suf2);

	printf("\nResult:\n");
	printf(message);
}

char* input_str() {
	int c;
	char* string = malloc(sizeof(char));
	string[0] = '\0';
	int i = 0;
	while ( (c = getchar()) != '\n')
	{
		string = realloc(string, (i + 2) * sizeof(char)); //reallocating memory
		string[i] = (char)c; //type casting `int` to `char`
		string[i + 1] = '\0'; //inserting null character at the end
		i++;
	}
	return string;
}

char* myreplaceall(char* str, char* suf1, char* suf2) {
	char* res = (char*)malloc(sizeof(char*));
	res[0] = '\0';
	int i = 0; int i2 = 0; int j = 0;
	while (i < strlen(str)) {
		while ((str[i + j] == suf1[0 + j]) & (j != strlen(suf1))) j++;
		if (j == strlen(suf1)) {
			stradd(&res, suf2);
			i = i + strlen(suf1);
			i2 = i2 + strlen(suf2);
		}
		else {
			char* c = malloc(sizeof(char) * 2);
			c[1] = '\0';
			c[0] = str[i];
			stradd(&res, c);
			i++; i2++;
		}
		j = 0;
	}
	res[i2] = '\0';
	return res;
}