#include <stdio.h>
#include <ncurses.h>
#include <time.h>
#include <unistd.h> // For the sleep function

int main() {

    while (1) {


	// Describe the program
	printf("This program will calculate who much you earn per second\nat the time you execute, as well as a date you specify.\n");

        // Enter your annual salary
        double annualSalary;
        printf("Enter your annual salary: $");
        scanf("%lf", &annualSalary);

        // Calculate your earnings per second
        double earningsPerSecond = annualSalary / (365.25 * 24 * 60 * 60);

        // Initialize the total earned
        double earned = 0.0;
        double earnedSincetarget = 0.0;

        // Get the current time when the program starts
        time_t startTime;
        time(&startTime);

        // Get the retire date from the user
        struct tm retireDate;
        printf("Enter the date you want to retire (YYYY-MM-DD): ");
        scanf("%d-%d-%d", &retireDate.tm_year, &retireDate.tm_mon, &retireDate.tm_mday);

        // Get the retire date from the user
        struct tm targetDate;
        printf("Enter a date you want to count from (YYYY-MM-DD): ");
        scanf("%d-%d-%d", &targetDate.tm_year, &targetDate.tm_mon, &targetDate.tm_mday);

        // Adjust month and year values
        retireDate.tm_year -= 1900; // Years since 1900
        retireDate.tm_mon -= 1;     // Months are 0-based (0 = January)
        targetDate.tm_year -= 1900; // Years since 1900
        targetDate.tm_mon -= 1;     // Months are 0-based (0 = January)

        // Convert the dates to a time_t value
        time_t retireTime = mktime(&retireDate);
        time_t targetTime = mktime(&targetDate);

        if (retireTime == -1) { // Prompt for a valid date
            printf("Invalid date entered.\n");
            refresh();
            continue;
	}
        if (targetTime == -1) {
            printf("Invalid date entered.\n");
            refresh();
            continue;
        }

    	// Initialize ncurses
   	initscr();
    	cbreak();  // Disable line buffering
    	noecho();  // Don't display user input
    	curs_set(0); // Hide the cursor

        while (1) {
            // Get the current time
            time_t currentTime;
            time(&currentTime);

            // Calculate the time difference in seconds
            time_t timeDifference = retireTime - currentTime;
	    time_t timeDifferencetarget = currentTime - targetTime;

            // Calculate the time elapsed since the program started
            double timeElapsed = difftime(currentTime, startTime);
            double timeElapsedtarget = difftime(currentTime, targetTime);

            // Calculate the earnings based on the time elapsed
            double earnings = earningsPerSecond * timeElapsed;
            double earningsTarget = earningsPerSecond * timeElapsedtarget;

            // Update the total earned
            earned = earnings;
	    earnedSincetarget = earningsTarget;

            // Clear the screen
            clear();

            // Print the current earnings
            printw("Earnings since program start: $%.2lf\n", earned);
            printw("Earnings since target date: $%.2lf\n", earnedSincetarget);

            if (timeDifference < 0) {
                printw("The retire date has already passed.\n");
                refresh();
                break; // Exit the countdown loop
            } else {

		// Calculate seconds, minutes, hours, days, months, and years
		int seconds = timeDifference % 60;
		int minutes = (timeDifference / 60) % 60;
		int hours = (timeDifference / (60 * 60)) % 24;
		int days = timeDifference / (24 * 60 * 60);

		// Calculate the number of years, months, and days
		int years = days / 365;
		int remainingDays = days % 365;
		int months = remainingDays / 30;  // Approximate number of days in a month
		remainingDays %= 30;             // Remaining days after subtracting months

		// Print the countdown
                printw("Time remaining: %d years, %d months, %d days\n%d hours, %d minutes, %d seconds",
                       years, months % 12, days % 7, hours, minutes, seconds);
            }

            // Refresh the screen to display changes
            refresh();

            // Sleep for 1 second before the next update
            sleep(1);
        }
    }

    // End ncurses
    endwin();

    return 0;
}