#include <main.h>

int ask_file() {

	printf ("Insert name of the file to be read : ");	// print this
	fgets(info.filename, info.fileNameSize, stdin);		// get the file from user input
	info.filename[strlen(info.filename)-1] = '\0';		// turn the last character into zero
	return 0;											// to clear the newline character in there
}

int invert_file(void) {

	if ((info.fd= fopen(info.filename, "r")) != NULL){	// If the file opens
		int ft, i = 0;									// make this two variables to help
														// going thru the text
		fseek(info.fd, 0, SEEK_END);					// take the file descriptor pointer
														// to the end of the file
		ft = ftell(info.fd);							// Count the file total number of characters

		while(i < ft) {									// While the characters dont finish
			i++;										// increment one character
			fseek(info.fd, -i, SEEK_END);				// go back one character in the text
			printf("%c", fgetc(info.fd));				// print current character
		}
		printf("\n");									// print newline to clear the terminal

		fclose(info.fd);								// Close the file
	}

	else {												// Otherwiser
		perror(info.filename);							// print failed to open the file
	}

	return 0;
}