import java.awt.Color;
import java.io.File;
import java.io.IOException;
import java.util.Arrays;
import java.util.Scanner;

import uwcse.graphics.GWindow;
import uwcse.graphics.Rectangle;
import uwcse.graphics.TextShape;

public class FileInput {

	/**
	 * Reading from a file
	 */
	public static void main(String[] args) {
		// character counters
		int[] count = new int[26];
		// use the Scanner class
		try {
			Scanner scan = new Scanner(new File("input.txt"));
			while (scan.hasNextLine()) {
				String line = scan.nextLine();
				line = line.toUpperCase();
				for (int i = 0; i < line.length(); i++) {
					char c = line.charAt(i);
					if (c >= 'A' && c <= 'Z') {
						count[c - 'A']++;
					}
				}
			}
			System.out.println(Arrays.toString(count));
			// display the histogram
			histogram(count);
		} catch (IOException e) {

		}
	}

	/**
	 * Displays the letter frequencies as an histogram
	 */
	public static void histogram(int[] count) {
		GWindow w = new GWindow();
		int width = w.getWindowWidth() / 26 - 4;
		// maximum value in count
		int max = count[0];
		for (int i = 1; i < count.length; i++) {
			if (max < count[i]) {
				max = count[i];
			}
		}
		int maxHeight = w.getWindowHeight() - 15;
		// save 15 pixels to display the character
		int x = 2, y = maxHeight; // bottom left corner of a bar
		for (int i = 0; i < count.length; i++) {
			// height of the bar
			int h = (count[i] * maxHeight) / max;
			Rectangle r = new Rectangle(x, y - h, width, h, Color.BLUE, true);
			w.add(r);
			// display the character below the bar
			String s = (char) (i + 'A') + "";
			TextShape t = new TextShape(s, x + width / 3, y );
			w.add(t);
			// next bar
			x += width + 4;
		}
	}

}