const { SlashCommandBuilder, Discord, codeBlock } = require('discord.js');
const {writeFile} = require('../main'); 

module.exports = {
	data: new SlashCommandBuilder()
		.setName('drawdesign')
		.setDescription('Draws a design in a codeblock')
		.addStringOption(option =>
			option.setName('design')
				.setDescription("Pick a design. (number 1-4)")
				.setRequired(true)
		)
		.addStringOption(option =>
			option.setName('string')
				.setDescription("String to feed into input")
				.setRequired(true)
		),
	async execute(interaction, client) {
		var inputString = interaction.options.getString('string');
		var design = parseInt(interaction.options.getString('design'));
		if (design < 1 || design > 4) {
			await interaction.reply('Invalid design choice.');
			return;
		}
		var output;
		switch (design) {
			case 1:
				output = design1(inputString);
				break;
			case 2:
				output = design2(inputString);
				break;
			case 3:
				output = design3(inputString);
				break;
			case 4:
				output = design4(inputString);
		}
		console.log(codeBlock("", output));
		writeFile();
		var testLength = "\n" + 'output length was ' + (output.length) + " characters.";
		if (output.length + testLength.length > 2000) {
			await interaction.reply('Error: String is too big. Resultant output would be too big to send to Discord. (the output length was ' + (output.length + testLength.length) + " characters.)");
			return;
		}
		await interaction.reply(codeBlock("", output) + testLength);
		console.log("User " + interaction.user.tag + " ran /drawtriangle");
	},
};
function design1(input) {
	console.log("Running design1...");
	var outputString;
	var startEnd = "";
	for (let i = 0; i < input.length + 2; i++) {
		startEnd += "*";
	}
	outputString = startEnd + "\n";
	outputString += "*" + "\n";
	outputString += "* " + input + "\n";
	outputString += "*" + "\n";
	outputString += startEnd;
	return outputString;
}
function design2(input) {
	console.log("Running design2...");
	var outputString;
	var height = (input.length * 2) + 6;
	var mid = Math.trunc(height / 2) + 1;
	if (height % 2 == 0) {
		height++;
	}
	outputString = "";
	for (let i = 0; i < height; i++) {
		if (mid == i) { //Determine if we're in the middle of the triangle
			outputString += "**" + input + "**";
		} else {
			for (let j = 0; j < i; j++) {
				outputString += "*";
			}
		}
		outputString += "\n";
	}
	return outputString;
}
function design3(input) {
	console.log("Running design3...");
	var outputString;
	var height = (input.length * 2) + 6;
	var mid = Math.trunc(height / 2) + 1;
	if (height % 2 == 0) {
		height++;
	}
	outputString = "";
	if (mid % 2 == 1) { // Skip a line if odd
		var subOffset = 1;
		var addOffset = 0;
	} else {
		var subOffset = 0;
		var addOffset = 1;
	}
	for (let i = 0; i < mid - addOffset; i++) {
		for (let j = 0; j < i; j++) {
			if (i % 2 == 1) {
				if (i != (mid - 1)) {
					if (i == 0 || (j == 0 || j == (i - 1))) { // Check if we're at the beginning or end of the line
						outputString += "*";
					} else {
						outputString += " ";
					}
				}
			}
		}
		outputString += "\n";
	}
	outputString += "* " + input + " *\n";
	for (let i = mid - subOffset; i > 0; i--) {
		for (let j = 0; j < i; j++) {
			if (i % 2 == 1) {
				if (j != (mid - 1) || (j != mid)) {
					if ((i == 0 || (j == 0 || j == (i - 1)))) { // Check if we're at the beginning or end of the line
						outputString += "*";
					} else {
						outputString += " ";
					}
				}
			}
		}
		outputString += "\n";
	}
	return outputString;
}

function design4(input) {
	var outputString = "";
	var radius = input.length +1;
	var mid = radius;
	if (mid % 2 == 1) {
		var spaceOffset = " ";
	} else {
		var spaceOffset = "";
	}

	// dist represents distance to the center
	var dist = parseFloat(0);
	var space = ""
	for (let i = 0; i < (input.length / 2); ++i) {
		space += " ";
	}
	// for horizontal movement
	for (var i = 0; i <= 2 * radius; i++) {
		if (i != mid && j != 0) {
				// for vertical movement
				for (var j = 0; j <= 2 * radius; j++) {

					dist = Math.sqrt(
						(i - radius) * (i - radius) +
						(j - radius) * (j - radius)
					);
		
					// dist should be in the range (radius - 0.5)
					// and (radius + 0.5) to print stars(*)
		
		
						if (dist > radius - 0.5 && dist < radius + 0.5) {
							outputString += "*";
						} else {
							outputString += " ";
						}
		
				}
		} else {
			outputString += "*" + space + input + space + spaceOffset + "*";
		}


		outputString += "\n";
	}
	return outputString;
}