import { readFileSync } from "node:fs";
import { join } from "node:path";
import { afterAll, beforeAll, describe, expect, it } from "vitest";
import { hasPikepdf } from "../helpers/python-gate.js";
import { buildTestApp, createMultipartPayload, loginAsAdmin, type TestApp } from "./test-server.js";

const PDF = readFileSync(join(__dirname, "..", "fixtures", "test-3page.pdf"));

let testApp: TestApp;
let adminToken: string;

beforeAll(async () => {
  testApp = await buildTestApp();
  adminToken = await loginAsAdmin(testApp.app);
}, 30_000);

afterAll(async () => {
  await testApp.cleanup();
}, 10_000);

async function runTool(settings: Record<string, unknown>) {
  const { body, contentType } = createMultipartPayload([
    { name: "file", filename: "test-3page.pdf", contentType: "application/pdf", content: PDF },
    { name: "settings", content: JSON.stringify(settings) },
  ]);
  return testApp.app.inject({
    method: "POST",
    url: "/api/v1/tools/pdf-metadata",
    headers: { authorization: `Bearer ${adminToken}`, "content-type": contentType },
    body,
  });
}

describe.skipIf(!hasPikepdf)("pdf-metadata (requires pikepdf)", () => {
  it("sets metadata and returns the updated values", async () => {
    const res = await runTool({ title: "Test Title", author: "Test Author" });
    expect(res.statusCode).toBe(200);
    const envelope = JSON.parse(res.body);
    expect(envelope.downloadUrl).toBeDefined();
    expect(envelope.resultPayload).toBeDefined();
    expect(envelope.resultPayload.metadata).toBeDefined();
    expect(envelope.resultPayload.metadata.Title).toBe("Test Title");
    expect(envelope.resultPayload.metadata.Author).toBe("Test Author");

    const dl = await testApp.app.inject({
      method: "GET",
      url: envelope.downloadUrl,
    });
    expect(dl.statusCode).toBe(200);
    expect(dl.rawPayload.subarray(0, 5).toString()).toBe("%PDF-");
  }, 60_000);
});

describe("pdf-metadata validation (ungated)", () => {
  it("rejects title longer than 500 characters with 400", async () => {
    const res = await runTool({ title: "A".repeat(501) });
    expect(res.statusCode).toBe(400);
  }, 30_000);
});