import {existsSync, lstatSync, symlinkSync, unlinkSync} from "fs";
import {resolve} from "path";

const manifest = await Bun.file("manifest.json").json();
const pluginId: string = manifest.id;

const vaultPath = process.argv[2] || process.env.OBSIDIAN_VAULT;

if (!vaultPath) {
	console.error(
		"Usage: bun run scripts/symlink-to-vault.ts <vault-path>\n" +
			"  or set OBSIDIAN_VAULT environment variable",
	);
	process.exit(1);
}

const resolvedVault = resolve(vaultPath);
const pluginsDir = resolve(resolvedVault, ".obsidian", "plugins");
const targetDir = resolve(pluginsDir, pluginId);
const distDir = resolve(import.meta.dir, "..", "dist");

if (!existsSync(pluginsDir)) {
	console.error(`Invalid vault path: ${resolvedVault}`);
	console.error(`.obsidian/plugins directory not found at ${pluginsDir}`);
	process.exit(1);
}

if (!existsSync(distDir)) {
	console.error(`Build not found: run 'bun run build' first`);
	process.exit(1);
}

if (existsSync(targetDir)) {
	if (lstatSync(targetDir).isSymbolicLink()) {
		const link = lstatSync(targetDir);
		const linkTarget = resolve(pluginsDir, link.path);

		if (linkTarget !== distDir) {
			unlinkSync(targetDir);
			symlinkSync(distDir, targetDir);
			console.log(`Updated symlink: ${targetDir} -> ${distDir}`);
		} else {
			console.log(`Symlink already correct: ${targetDir} -> ${distDir}`);
		}
	} else {
		console.error(`${targetDir} exists and is not a symlink. Refusing to remove for safety.`);
		process.exit(1);
	}
} else {
	symlinkSync(distDir, targetDir);
	console.log(`Created symlink: ${targetDir} -> ${distDir}`);
}