#include <iostream>
#include <string>

class Rectangle {
private:
	static const unsigned int MAX_HEIGHT = 30;
	static const unsigned int MAX_WIDTH = 30;
	static const char FILLING = '_';
	unsigned int width;
	unsigned int height;
	
	void drawHorizontalSides();
	void drawVerticalSide();
	
public:
	Rectangle(unsigned int w, unsigned int h);
	void draw();
};

Rectangle::Rectangle (unsigned int w, unsigned int h) : width(w), height(h) {
}

void Rectangle::draw () {
	if(this->width > MAX_WIDTH) {
		std::cout << "Too large of a width, enter in something smaller!";
		std::cout << std::endl << std::endl;
	}
	else if(this->width > MAX_HEIGHT) {
		std::cout << "Too large of a height, enter in something smaller!";
		std::cout << std::endl << std::endl;
	}
	else {
		// Draw top.
		std::cout << " ";
		this->drawVerticalSide();
		std::cout << " " << std::endl;
		
		// Draw sides.
		this->drawHorizontalSides();
		
		// Draw bottom.
		std::cout << "|";
		this->drawVerticalSide();
		std::cout << "|";
	}
}

void Rectangle::drawHorizontalSides() {
	std::string spacing(this->width, this->FILLING);
	for(unsigned int n = this->height - 1; n > 0; --n) {
		std::cout << "|" << spacing << spacing << "|" << std::endl;
	}
}

void Rectangle::drawVerticalSide() {
	for(unsigned int n = this->width; n > 0; --n) {
		std::cout << "__";
	}
}

int main(int argc, char* argv[]) {
	Rectangle sample_rectangle(10, 7);
	sample_rectangle.draw();
}

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