import { createElement as h } from "react";
import path from "node:path";
import { renderToBuffer, Document, Page, Text } from "@react-pdf/renderer";
import { describe, expect, it } from "vitest";
import { registerBundledFonts, stack } from "./register";

registerBundledFonts(path.resolve(process.cwd(), "public/fonts"));

const render = (page: object, style: object) =>
  renderToBuffer(
    h(Document, null, h(Page, page as never, h(Text, { style: style as never }, "Total ₹1,23,456.78 नमस्ते ಕನ್ನಡ"))),
  );

describe("bundled fonts render", () => {
  it("renders every family-stack in italic and bold-italic without throwing", async () => {
    for (const fontWeight of [300, 400, 500, 600, 700]) {
      const buf = await render({ size: "A4" }, { fontFamily: stack("IBM Plex Sans"), fontStyle: "italic", fontWeight });
      expect(buf.subarray(0, 5).toString()).toBe("%PDF-");
    }
    const mono = await render({ size: "A4" }, { fontFamily: stack("IBM Plex Mono"), fontStyle: "italic", fontWeight: 600 });
    expect(mono.length).toBeGreaterThan(1000);
  });

  it("accepts mm strings in the Page size object", async () => {
    const buf = await render({ size: { width: "210mm", height: "297mm" } }, { fontFamily: stack("IBM Plex Sans") });
    const m = /\/MediaBox \[0 0 ([\d.]+) ([\d.]+)\]/.exec(buf.toString("latin1"));
    expect(m).not.toBeNull();
    expect(Number(m![1])).toBeCloseTo(595.28, 1);
    expect(Number(m![2])).toBeCloseTo(841.89, 1);
  });
});