import std.stdio;
import std.format;
import std.conv;

import hibis.core.engine;
import hibis.math.types;
import hibis.renderer.renderer;
import hibis.logging.types;
import hibis.callback;
import hibis_rsdl.rsdl;
import hibis_rsdl.resources.font;

import core.thread;

void logger(LoggingSeverity severity, string message) {
	writeln(format("[%s]: %s", to!string(severity), message));
}

void main() {
	Renderer renderer = new RSDL("test", IntVec2(800, 600), &logger);
	Engine engine = new Engine(renderer, &logger);
	version(windows) {
		Font font = new Font("C:\\Windows\\Fonts\\Arial.ttf", 16);
	} else {
		Font font = new Font("/usr/share/fonts/noto/NotoSans-Light.ttf", 16);
	}
	ubyte red = 0;
	bool increase = true;

	logger(LoggingSeverity.Information, "Started Hibis test app! BEHOLD: Colours.");
	while (renderer.keepOpen) {
		engine.runNodeProcesses();

		// Colour changing background!
		if ((red == 255 && increase) || (red == 0 && !increase)) {
			increase = !increase;
		}
		if (increase) red += 1;
		else red -= 1;

		// Clear screen then sleep for ~16ms
		renderer.clearScreen(Color(red, 0, 0, 255));
		renderer.drawText(font, "TEST", IntRect(0, 0, 64, 64), Color(255, 255, 255, 255));

		engine.drawNodes();
		renderer.renderCurrent();
		renderer.update();
		Thread.sleep(16.msecs);
	}
	destroy(font);
}