import { promises as fs } from "fs";
import path from "node:path";
import iconv from "iconv-lite";
import { convert } from ".";
import assert from "node:assert";
import * as Diff from "diff";

describe("mt940 converter", () => {
	it("converts properly", async () => {
		const content = await fs.readFile(
			path.resolve(__dirname, "../tests/real_csv.csv"),
			{
				encoding: null,
			}
		);
		const result = convert(iconv.decode(content, "cp1250"));
		const expected_result = await fs.readFile(
			path.resolve(__dirname, "../tests/real_mt940.txt"),
			"utf-8"
		);
		try {
			assert.strictEqual(result.output, expected_result);
		} catch (e) {
			console.error("There was a difference. Fixes to apply:");
			console.log(
				Diff.createPatch("mt940", result.output, expected_result)
			);
			throw new Error("Texts differ");
		}
	});

	it.only("converts properly", async () => {
		const content = await fs.readFile(
			path.resolve(__dirname, "../tests/real_csv_2.csv"),
			{
				encoding: null,
			}
		);
		const result = convert(iconv.decode(content, "cp1250"));
		const expected_result = await fs.readFile(
			path.resolve(__dirname, "../tests/real_mt940_2.txt"),
			"utf-8"
		);
		try {
			assert.strictEqual(result.output, expected_result);
		} catch (e) {
			console.error("There was a difference. Fixes to apply:");
			console.log(
				Diff.createPatch("mt940", result.output, expected_result)
			);
			throw new Error("Texts differ");
		}
	});
});