import assert from "node:assert/strict";
import { test } from "node:test";
import { createServer } from "node:http";
import { GiteaClient } from "../client.ts";

test("every page of a pull request's files is read, though the forge caps a page at fifty", async () => {
  const total = 59;
  const server = createServer((req, res) => {
    const url = new URL(req.url ?? "", "http://x");
    const page = Number(url.searchParams.get("page") ?? "1");
    const start = (page - 1) * 50;
    const files = Array.from({ length: Math.max(0, Math.min(50, total - start)) }, (_, i) => ({ filename: `modules/m${start + i}/x` }));
    res.setHeader("content-type", "application/json");
    res.end(JSON.stringify(files));
  });
  await new Promise<void>((r) => server.listen(0, r));
  const port = (server.address() as any).port;
  const client = new GiteaClient(`http://127.0.0.1:${port}`, "t");
  const got = await client.listPullFiles("novox", "mesh-catalog", 60);
  server.close();
  assert.equal(got.paths.length, total);
  assert.equal(got.truncated, false);
  assert.equal(new Set(got.paths).size, total);
});

test("a pass asks only the repositories that moved since the last look, every one before the first", async () => {
  const { movedSince } = await import("../client.ts");
  const repos = [
    { full_name: "a/old", name: "old", owner: "a", private: false, html_url: "", updated_at: "2026-10-05T10:00:00Z" },
    { full_name: "a/new", name: "new", owner: "a", private: false, html_url: "", updated_at: "2026-10-05T16:10:02Z" },
    { full_name: "a/unknown", name: "unknown", owner: "a", private: false, html_url: "" },
  ];
  assert.deepEqual(movedSince(repos, "").map((r) => r.name), ["old", "new", "unknown"]);
  assert.deepEqual(movedSince(repos, "2026-10-05T16:09:00.000Z").map((r) => r.name), ["new", "unknown"]);
  assert.deepEqual(movedSince(repos, "2026-10-05T18:10:02+02:00").map((r) => r.name), ["new", "unknown"], "an offset is a moment, not a string");
});