import { test, type TestContext } from "node:test";
import assert from "node:assert/strict";
import { createServer } from "node:http";
import { spawn } from "node:child_process";
import { mkdir, mkdtemp, rm } from "node:fs/promises";
import { resolve, sep } from "node:path";

const script = resolve("scripts/reprocess.mjs");
const id = "00000000-0000-4000-8000-000000000001";
const baseDataset = {
  id,
  source: "fabric",
  state: "review",
  revision_id: null,
  rejection_reason: null,
  map_path: "old-map.webp",
  cover_path: "old-cover.webp",
  panorama_count: 12,
};
const baseJob = {
  id: "00000000-0000-4000-8000-000000000002",
  state: "complete",
  updated_at: "2026-10-04T12:00:00Z",
  attempts: 3,
  progress: 100,
  error: null,
};

async function run(
  t: TestContext,
  options: {
    published?: boolean;
    active?: boolean;
    jobConflict?: boolean;
    contribution?: boolean;
    mixed?: boolean;
  } = {},
) {
  const dataset = {
    ...baseDataset,
    ...(options.published ? { state: "published", revision_id: id } : {}),
    ...(options.contribution ? { parent_dataset_id: id } : {}),
  };
  const job = { ...baseJob, ...(options.active ? { state: "running" } : {}) };
  const input = {
    validated: true,
    manifest: {
      viewpoints: [{ id: "p0", ...(options.mixed ? { assetRoot: id } : {}) }],
    },
  };
  const patches: { table: string; body: Record<string, unknown> }[] = [];
  const server = createServer(async (req, res) => {
    const url = new URL(req.url!, "http://localhost");
    const table = url.pathname.split("/").at(-1)!;
    const row =
      table === "datasets" ? dataset : table === "upload_jobs" ? job : input;
    res.setHeader("Content-Type", "application/json");
    if (req.method === "GET") {
      res.end(JSON.stringify(row));
      return;
    }
    let raw = "";
    for await (const chunk of req) raw += chunk;
    const body = JSON.parse(raw);
    patches.push({ table, body });
    if (options.jobConflict && table === "upload_jobs") {
      res.end("[]");
      return;
    }
    Object.assign(row, body);
    res.end(
      url.searchParams.has("select")
        ? JSON.stringify([{ id: table === "datasets" ? id : job.id }])
        : "null",
    );
  });
  await new Promise<void>((resolve) => server.listen(0, "127.0.0.1", resolve));
  const parent = resolve(".cache");
  await mkdir(parent, { recursive: true });
  const directory = await mkdtemp(`${parent}/reprocess-tests-`);
  t.after(async () => {
    await new Promise<void>((resolve) => server.close(() => resolve()));
    assert.ok(resolve(directory).startsWith(parent + sep));
    await rm(directory, { recursive: true, force: true });
  });
  const address = server.address();
  assert.ok(address && typeof address !== "string");
  const result = await new Promise<{ code: number | null; output: string }>(
    (resolve, reject) => {
      const child = spawn(process.execPath, [script, id], {
        cwd: directory,
        windowsHide: true,
        env: {
          ...process.env,
          NEXT_PUBLIC_SUPABASE_URL: `http://127.0.0.1:${address.port}`,
          SUPABASE_SECRET_KEY: "test-only-secret",
        },
        stdio: ["ignore", "pipe", "pipe"],
      });
      let output = "";
      child.stdout.on("data", (data) => (output += data));
      child.stderr.on("data", (data) => (output += data));
      child.on("error", reject);
      child.on("exit", (code) => resolve({ code, output }));
    },
  );
  return { ...result, dataset, job, input, patches };
}

test("reprocessing keeps the upload and resets unpublished preview and exhausted job metadata", async (t) => {
  const result = await run(t);
  assert.equal(result.code, 0, result.output);
  assert.equal(result.dataset.state, "processing");
  assert.equal(result.dataset.map_path, null);
  assert.equal(result.dataset.cover_path, null);
  assert.equal(result.dataset.panorama_count, 0);
  assert.equal(result.input.validated, false);
  assert.equal(result.job.state, "queued");
  assert.equal(result.job.attempts, 0);
  assert.equal(result.job.progress, 0);
  assert.equal(result.job.error, null);
  assert.ok(
    result.patches.every(({ table }) =>
      ["datasets", "upload_jobs", "dataset_inputs"].includes(table),
    ),
  );
});

test("reprocessing cannot mutate published revisions", async (t) => {
  const result = await run(t, { published: true });
  assert.notEqual(result.code, 0);
  assert.match(result.output, /Published revisions cannot be changed/);
  assert.deepEqual(result.patches, []);
});
test("accepted contribution media cannot be overwritten through reprocessing", async (t) => {
  for (const options of [{ contribution: true }, { mixed: true }]) {
    const result = await run(t, options);
    assert.notEqual(result.code, 0);
    assert.match(
      result.output,
      /Contributions cannot be overwritten|accepted contributions/,
    );
    assert.deepEqual(result.patches, []);
  }
});

test("reprocessing cannot take over an active worker job", async (t) => {
  const result = await run(t, { active: true });
  assert.notEqual(result.code, 0);
  assert.match(result.output, /already queued or running/);
  assert.deepEqual(result.patches, []);
});

test("a queue conflict restores the previous draft metadata and validation status", async (t) => {
  const result = await run(t, { jobConflict: true });
  assert.notEqual(result.code, 0);
  assert.match(result.output, /Job state changed/);
  assert.equal(result.dataset.state, baseDataset.state);
  assert.equal(result.dataset.map_path, baseDataset.map_path);
  assert.equal(result.dataset.panorama_count, baseDataset.panorama_count);
  assert.equal(result.input.validated, true);
  assert.equal(result.job.state, "complete");
});