/* Standard Libraries */
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <ctype.h>
#include <unistd.h>
#include <time.h>

/* Cairo Libraries */
#include <cairo/cairo-pdf.h>
#include <cairo/cairo.h>

/* calp Libraries */
#include "color.h"
#include "date.h"
#include "draw.h"

// int main (int argc, char *argv[]) {
int main (void) {
	/* Dimension initialization */
	int rows = 6;			/* Number of weeks in a month */
	int columns = 7;		/* Number of days in a week */
	double margin = 0.5; 		/* 0.5" */
	int number_of_days = 28;

	double month_origin_x = margin;
	double month_origin_y = 3.0;
	double paper_width = 8.5;
	double paper_height = 11;
	double month_width = paper_width - (month_origin_x * 2);
	double month_height = paper_height - month_origin_y - margin;
	double day_box_width = month_width / columns;
	double day_box_height = month_height / rows;

	struct dimensions dim = {
		paper_width, 	/* pw */
		paper_height,	/* ph */
		month_width,	/* mw */
		month_height, 	/* mh */
		day_box_width,	/* bw */
		day_box_height,	/* bh */
		rows,		/* r  */
		columns,	/* c  */
		margin,		/* m  */
	};

	/* Date Setup */
		char *months[] = {
		"January", "February", "March", "April", "May",
		"June", "July", "August", "September", "October",
		"November", "December"
	};

	//int days_in_month[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
	
	// const char *weekday_names[] = {
	// 	"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
	// };

	// const char *weekdays_abbr[] = {
	// 	"Su", "Mo", "Tue", "Wed", "Thurs", "Fri", "Sat"
	// };

	int year = 2025;
	int month = 2;

	struct tm day;
	day.tm_mon = month - 1;
	day.tm_mday = 1;
	day.tm_year = year - 1900;

	/* tm.hour, tm_min, & tm_sec are not used, but need to be zeroed. */
	day.tm_hour = 0;
	day.tm_min = 0;			
	day.tm_sec = 0;

	mktime(&day);

	cairo_surface_t * surface = cairo_pdf_surface_create("0.pdf", dim.pw * 72, dim.ph * 72);
	cairo_t *cr = cairo_create(surface);


	cairo_scale(cr, 72, 72);
	set_color(cr, "GRAY");
	cairo_set_line_width (cr, 0.03);


	clock_t begin = clock();
	draw_calendar(cr, month_origin_x, month_origin_y, dim);
	draw_numbers(cr, month_origin_x, month_origin_y, dim, day.tm_wday, number_of_days);
	draw_month_name(cr, months[1], dim);

	/* Clean Up */
	cairo_destroy(cr);
	cairo_surface_destroy(surface);

	clock_t end = clock();
	double time_spent = (double)(end - begin) / CLOCKS_PER_SEC;
	printf("Execution Time: %.3fs\n", time_spent);
	return(0);
}