// node index.js --count=5 --format=html --type=paragraph
// --count: 1-32 (default; 5)
// --format: html, txt (default)
// --type: list, paragraph (default)

import fs from "fs";
import minimist from "minimist";

const select = (data) => data[Math.floor(Math.random() * data.length)];

const args = minimist(process.argv.slice(2), {
	"alias": {
		"c": "count",
		"f": "format",
		"t": "type"
	},
	"default": {
		"count": "5",
		"format": "txt",
		"type": "paragraph"
	},
	"string": [
		"count",
		"format",
		"type"
	]
});
args.count = parseInt(args.count, 10);

if (args.format !== "html" && args.format !== "txt") {
	throw new Error('--format option must be "html" or "txt".');
}

if (args.type !== "list" && args.type !== "paragraph") {
	throw new Error('--type option must be "paragraph" or "list".');
}

if (args.count > 32) {
	throw new Error("--count option must be <=32.")
}

const data = JSON.parse(fs.readFileSync("./zzz.json", "utf8"));
let output = [];

for (var i = 0; i < args.count; i++) {
	if (args.type === "list") {
		output.push(select(data));
		continue;
	}

	const count = Math.floor(Math.random() * 5 + 3);
	const p = [];

	for (var j = 0; j < count; j++) {
		p.push(select(data));
	}

	output.push(p.join(""));
}

if (args.format === "html" && args.type === "list") {
	output = output.map((li) => `<li>${li}</li>`);
	output.unshift("<ul>");
	output.push("</ul>");
}

if (args.format === "html" && args.type === "paragraph") {
	output = output.map((p) => `<p>${p}</p>`);
}

let delimiter = "\n";

if (args.type === "paragraph") {
	delimiter = "\n\n";
}

console.log(output.join(delimiter));