import { existsSync } from "node:fs";

import { createRequire } from "node:module";

import path from "node:path";

import { beforeEach, describe, expect, it, vi } from "vitest";

const { canvasSizes, pdfDocument } = vi.hoisted(() => ({

const { canvasSizes, getDocumentMock, pdfDocument } = vi.hoisted(() => ({

canvasSizes: [] as Array<{ width: number; height: number }>,

getDocumentMock: vi.fn(),

pdfDocument: {

numPages: 2,

getPage: vi.fn(async () => ({

}));

vi.mock("pdfjs-dist/legacy/build/pdf.mjs", () => ({

getDocument: vi.fn(() => ({ promise: Promise.resolve(pdfDocument) })),

getDocument: getDocumentMock,

}));

vi.mock("@napi-rs/canvas", () => ({

import { createPdfDocumentExtractor } from "./document-extractor.js";

const require = createRequire(import.meta.url);

describe("PDF document extractor", () => {

beforeEach(() => {

canvasSizes.length = 0;

getDocumentMock.mockReset();

getDocumentMock.mockReturnValue({ promise: Promise.resolve(pdfDocument) });

pdfDocument.getPage.mockClear();

});

expect(result?.images).toHaveLength(1);

expect(canvasSizes).toEqual([{ width: 10, height: 10 }]);

});

it("passes standardFontDataUrl to pdfjs getDocument as a package-root filesystem path", async () => {

const extractor = createPdfDocumentExtractor();

await extractor.extract({

buffer: Buffer.from("%PDF-1.4"),

mimeType: "application/pdf",

maxPages: 1,

maxPixels: 4_000_000,

minTextChars: 200,

});

expect(getDocumentMock).toHaveBeenCalledTimes(1);

const [params] = getDocumentMock.mock.calls[0] ?? [];

expect(params).toMatchObject({

disableWorker: true,

});

expect(typeof params.standardFontDataUrl).toBe("string");

const expectedStandardFontDataUrl =

path.join(path.dirname(require.resolve("pdfjs-dist/package.json")), "standard_fonts") + "/";

expect(params.standardFontDataUrl).toBe(expectedStandardFontDataUrl);

expect(path.isAbsolute(params.standardFontDataUrl)).toBe(true);

expect(params.standardFontDataUrl.endsWith("/")).toBe(true);

expect(params.standardFontDataUrl.startsWith("file://")).toBe(false);

expect(existsSync(params.standardFontDataUrl)).toBe(true);

expect(existsSync(path.join(params.standardFontDataUrl, "LiberationSans-Regular.ttf"))).toBe(

true,

);

});

});