import { assertEquals } from "testing/asserts.ts";
import { HtmlStrRenderer } from "../ren/html_str.ts";
import { MarkdownParser } from "./md.ts";

const ren = new HtmlStrRenderer();

Deno.test({
  name: "should skip new line character",
  fn: () => {
    const par = new MarkdownParser();
    assertEquals(ren.render(par.parse("\n")), "");
    assertEquals(ren.render(par.parse("\r\n")), "");
    assertEquals(ren.render(par.parse("\n\r\n")), "");
  },
});

Deno.test({
  name: "should parse empty ATX header",
  fn: () => {
    const par = new MarkdownParser();
    const res = par.parse("#");
    assertEquals(ren.render(res), "<h1></h1>");
  },
});

Deno.test({
  name: "should parse ATX header with text",
  fn: () => {
    const par = new MarkdownParser();
    assertEquals(ren.render(par.parse("# hello")), "<h1>hello</h1>");
    assertEquals(ren.render(par.parse("# hello#")), "<h1>hello#</h1>");
  },
});

Deno.test({
  name: "should parse ATX header with specific level",
  fn: () => {
    const par = new MarkdownParser();
    assertEquals(ren.render(par.parse("# hello")), "<h1>hello</h1>");
    assertEquals(ren.render(par.parse("## hello")), "<h2>hello</h2>");
    assertEquals(ren.render(par.parse("### hello")), "<h3>hello</h3>");
    assertEquals(ren.render(par.parse("#### hello")), "<h4>hello</h4>");
    assertEquals(ren.render(par.parse("##### hello")), "<h5>hello</h5>");
    assertEquals(ren.render(par.parse("###### hello")), "<h6>hello</h6>");
  },
});

Deno.test({
  name: "should parse ATX header if line contains additional spaces",
  fn: () => {
    const par = new MarkdownParser();
    assertEquals(ren.render(par.parse(" # hello")), "<h1>hello</h1>");
    assertEquals(ren.render(par.parse("  # hello")), "<h1>hello</h1>");
    assertEquals(ren.render(par.parse("   # hello")), "<h1>hello</h1>");
    assertEquals(ren.render(par.parse("\n   # hello")), "<h1>hello</h1>");
    assertEquals(ren.render(par.parse("\r\n   # hello")), "<h1>hello</h1>");
  },
});

Deno.test({
  name: "should parse ATX header with closing sequence",
  fn: () => {
    const par = new MarkdownParser();
    assertEquals(ren.render(par.parse("# #")), "<h1></h1>");
    assertEquals(ren.render(par.parse("# hello #")), "<h1>hello</h1>");
    assertEquals(ren.render(par.parse("# hello #########")), "<h1>hello</h1>");
    assertEquals(ren.render(par.parse("# hello #        ")), "<h1>hello</h1>");
    assertEquals(ren.render(par.parse("###### hello #")), "<h6>hello</h6>");
  },
});

Deno.test({
  name: "should parse many headers with text",
  fn: () => {
    const par = new MarkdownParser();

    const input = `\
# hello
## world
### this is
#### my world!`;

    assertEquals(
      ren.render(par.parse(input)),
      "<h1>hello</h1><h2>world</h2><h3>this is</h3><h4>my world!</h4>",
    );
  },
});