import { expect, test } from "bun:test";
import MarkdownCompiler from "../markdown-compiler";

const mockMarked = {
  parse: (text: string) => `<p>${text}</p>`,
};
const mockParseMetadata = (file: string) => {
  if (file.startsWith("title=Hello\n=+\n")) {
    return { title: "Hello" };
  }
  return undefined;
};

// @ts-expect-error Mocked.
MarkdownCompiler.prototype["marked"] = mockMarked;
// @ts-expect-error Mocked.
MarkdownCompiler.prototype["parseMetadata"] = mockParseMetadata;

test("MarkdownCompiler compiles markdown to HTML", async () => {
  const plugin = new MarkdownCompiler();
  const input = "# Hello World";

  const output = await plugin.rewriteFile(input);
  expect(typeof output).toBe("string");
  expect(output).toContain("Hello World");
});

test("MarkdownCompiler uses metadata title if present", async () => {
  const plugin = new MarkdownCompiler();
  const input = "title=Hello\n=+\n# Some Content";
  const output = await plugin.rewriteFile(input);
  expect(output).toContain("Hello");
  expect(output).toContain("Some Content");
});

test("MarkdownCompiler returns HTML for markdown without metadata", async () => {
  const plugin = new MarkdownCompiler();
  const input = "# Just Markdown";
  const output = await plugin.rewriteFile(input);
  expect(output).toContain("Just Markdown");
});