import { describe, expect, it } from "vitest";
import {
  htmlToPlainText,
  plainTextFromMaybeHtml,
  resolveParsedMailBody,
} from "@/utils/mail-body-text";

describe("mail-body-text", () => {
  it("htmlToPlainText keeps line breaks and Chinese", () => {
    const html =
      "<div>\u8bf7\u67e5\u6536\u65b0\u589e\u9884\u62a5\uff1a\u65b0\u8fb0\u6cfd</div><br/><p>\u67dc\u53f7\uff1aWHSU8127240</p>";
    const t = htmlToPlainText(html);
    expect(t).toContain("\u8bf7\u67e5\u6536\u65b0\u589e\u9884\u62a5\uff1a\u65b0\u8fb0\u6cfd");
    expect(t).toContain("\u67dc\u53f7\uff1aWHSU8127240");
  });

  it("prefers fuller HTML when text/plain is a stub", () => {
    const body = resolveParsedMailBody({
      text: "\u8bf7\u67e5\u6536\u90ae\u4ef6",
      html: "<div>\u8bf7\u67e5\u6536\u65b0\u589e\u9884\u62a5\uff1a\u65b0\u8fb0\u6cfd+WHLC027G597465+WHSU8127240+\u6d1b\u6749\u77f6+40HQ</div><p>DO\u4e5f\u540c\u6b65\u4e0a\u4f20\uff0c\u8bf7\u6ce8\u610f\u67e5\u6536\uff01</p>",
    });
    expect(body).toContain("WHSU8127240");
    expect(body).toContain("DO\u4e5f\u540c\u6b65\u4e0a\u4f20");
  });

  it("keeps longer HTML over short text/plain", () => {
    const long = "\u5b8c\u6574\u8f6c\u53d1\u6b63\u6587\u5185\u5bb9".repeat(20);
    const body = resolveParsedMailBody({
      text: "short stub",
      html: `<div>${long}</div>`,
    });
    expect(body.length).toBeGreaterThan(40);
    expect(body).toContain("\u5b8c\u6574\u8f6c\u53d1\u6b63\u6587\u5185\u5bb9");
  });

  it("plainTextFromMaybeHtml leaves plain text alone", () => {
    expect(plainTextFromMaybeHtml("\u67dc\u53f7\uff1aMATU2745683")).toBe(
      "\u67dc\u53f7\uff1aMATU2745683",
    );
  });
});