import { globSync } from "glob";
import crypto from "crypto";
import { createReadStream } from "fs";
import { writeFile } from "fs/promises";

async function hashFile(path) {
	return new Promise((resolve) => {
		const stream = createReadStream(path);
		const hash = crypto.createHash(`sha1`);
		hash.setEncoding(`hex`);

		stream.on(`end`, () => {
			hash.end();
			resolve(hash.read());
		});

		stream.pipe(hash);
	});
};

const skipFiles = [
	`vtt.png`,
	`vtt-512.png`,
	`anvil.png`,
	`fvtt.icns`,
	`fvtt.ico`,
	`logo-scifi.png`,
	`logo-scifi-blank.png`,
	`LICENSE`,
];

const tagRenames = {
	weapons: `weapon`,
	wands: `wand`,
	swords: `sword`,
	cutlasses: `cutlass`,
	daggers: `dagger`,
	commodities: `commodity`,
	feathers: `feather`,
	dynamite: `explosive`,
	bomb: `explosive`,
}

const purgeTags = new Set([
	// All of the colours
	`white`, `yellow`, `blue`, `red`, `green`, `black`, `brown`, `teal`, `silver`, `purple`, `gray`, `grey`, `orange`, `lime`, `crimson`, `magenta`, `gold`, `cyan`, `pink`, `tan`, `violet`,

	// Terms that just suck as tags
	`simple`, `ringed`, `hollow`, `guard`, `pressure`, `gas`, `fuse`,
	`cloth`, `sharp`, `worn`,
]);

async function main() {
	const imageList = globSync(`foundry/public/icons/**/*`, { nodir: true });
	const images = {};

	for (const path of imageList) {
		if (skipFiles.some(file => path.endsWith(file))) continue;

		const hash = await hashFile(path);
		const filename = path.split(`/`).at(-1);

		const tags = new Set(
			path
			.replace(`foundry/public/icons/`, ``)
			.replace(/\.[a-z]+$/i, ``)
			.replaceAll(`-`, `/`)
			.split(`/`)
			.map(tag => tagRenames[tag] ?? tag)
			.filter(tag => !purgeTags.has(tag))
		);

		images[hash] = {
			name: filename,
			tags: Array.from(tags),
			artists: [`FVTT`],
			path: path.replace(`foundry/public/`, ``),
			external: true
		};
	};

	await writeFile(
		`importable/images.json`,
		JSON.stringify(images),
	);
};

main();