import test from "node:test";
import assert from "node:assert/strict";
import { buildPrChangeSummary } from "../src/workflows/github_pr_monitor.js";

function formatLikeWorkflow({ repo, pr, after, before }) {
	const summary = buildPrChangeSummary(before, after);
	const fields = summary.changedFields.length ? ` (${summary.changedFields.join(", ")})` : "";
	const title = after?.title ? `: ${after.title}` : "";
	const url = after?.url ? ` ${after.url}` : "";
	return `PR updated: ${repo}#${pr}${title}${fields}.${url}`.replace(/\s+/g, " ").trim();
}

test("notify message includes repo/pr and changed fields", () => {
	const before = { number: 1, title: "A", url: "u", state: "OPEN", updatedAt: "t1" };
	const after = { ...before, title: "B", updatedAt: "t2" };

	const msg = formatLikeWorkflow({ repo: "o/r", pr: 1, before, after });
	assert.ok(msg.includes("o/r#1"));
	assert.ok(msg.includes("title"));
	assert.ok(msg.includes("updatedAt"));
});