#include <cairo/cairo-pdf.h>
#include <cairo/cairo.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <ctype.h>
#include <unistd.h>
#include "include/color.h"
#include "include/date.h"
#include "include/draw.h"

#define US_LETTER_PAPER_WIDTH 8.5;
#define US_LETTER_PAPER_HEIGHT 11;


int main (int argc, char *argv[]) {
	int rows = 5;
	int columns = 7;
	double margin = 0.5;
	int number_of_days = 28;

	double month_origin_x = margin;
	double month_origin_y = 3.0;

	double paper_width = US_LETTER_PAPER_WIDTH;
	double paper_height = US_LETTER_PAPER_HEIGHT;

	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  */
	};

	char date_strings[number_of_days][2];
	char months[12][10] = {
		"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};

	char weekday_abbr[7][5] = {
		"Su", "Mo", "Tue", "Wed",
		"Thurs", "Fri", "Sat"
	};

	cairo_surface_t * surface = cairo_pdf_surface_create("0.pdf", paper_width * 72, paper_height * 72);
	cairo_t *cr = cairo_create(surface);

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

	draw_calendar(cr, month_origin_x, month_origin_y, dim);
	set_color(cr, "GRAY");
	draw_numbers(cr, month_origin_x, month_origin_y, dim, 6, number_of_days);
	draw_month_name(cr, months[1], dim);

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

	return(0);
}