import "../setup.ts";
import { assert, assertFalse, assertStringIncludes } from "@std/assert";
import { type DigestContent, renderDigestEmail } from "../../mail/digest.ts";

const links = {
  notifications: "https://g.test/notifications",
  followed: "https://g.test/~/followed",
  chat: "https://g.test/?chat=open",
  settings: "https://g.test/users/ann/~/settings",
  unsubscribe: "https://g.test/unsubscribe?token=t",
};
const dump = (title: string, over = {}) => ({
  title,
  url: "https://g.test/dumps/x",
  poster: "bob",
  domain: "example.com",
  thumbnail: "https://g.test/api/thumbnails/x?v=1",
  votes: 1,
  comments: 0,
  mine: false,
  ...over,
});

Deno.test("renderDigestEmail: the weekly digest escapes what users wrote and links to unsubscribe", () => {
  const content: DigestContent = {
    cadence: "weekly",
    from: new Date("2026-09-27T08:00:00Z"),
    to: new Date("2026-10-04T08:00:00Z"),
    reader: "ann",
    activity: {
      counts: { upvotes: 12, followers: 1 },
      highlights: [{
        kind: "comment",
        who: "bob",
        target: { title: "<script>x</script>", url: "https://g.test/dumps/y" },
        quote: "a <b>bold</b> claim",
        at: new Date("2026-09-30T10:00:00Z"),
      }],
      total: 13,
    },
    network: { dumps: [dump("Net & work")], more: 2 },
    top: [dump("Mine", { mine: true, votes: 4 })],
    community: null,
    links,
  };
  const email = renderDigestEmail(content, { style: "smooth", scheme: "auto" });
  assertStringIncludes(email.subject, "Your week on gerbeur, Sep 27");
  assertFalse(email.html.includes("<script>x"));
  assertStringIncludes(email.html, "&lt;script&gt;x&lt;/script&gt;");
  assertStringIncludes(email.html, "a &lt;b&gt;bold&lt;/b&gt; claim");
  assertStringIncludes(email.html, "Net &amp; work");
  assertStringIncludes(email.html, "2 more on your Followed feed");
  assertStringIncludes(email.html, ">yours</span>");
  assertStringIncludes(email.html, `href="${links.unsubscribe}"`);
  assertStringIncludes(
    email.html,
    "12 upvotes, 1 new follower, and 3 new dumps",
  );
  // The plain-text part is Markdown, with what users wrote escaped.
  assertStringIncludes(email.text, "# Your week, ann");
  assertStringIncludes(email.text, "## From people you follow");
  assertStringIncludes(
    email.text,
    "[Turn off weekly digests](https://g.test/unsubscribe?token=t)",
  );
  assertStringIncludes(
    email.text,
    "[\\<script\\>x\\</script\\>](https://g.test/dumps/y)",
  );
  assertStringIncludes(email.text, "  > a \\<b\\>bold\\</b\\> claim");
  assertFalse(email.html.includes("Community"));
});

Deno.test("renderDigestEmail: the monthly recap leads with a wide image and the month's totals", () => {
  const content: DigestContent = {
    cadence: "monthly",
    from: new Date("2026-09-04T08:00:00Z"),
    to: new Date("2026-10-04T08:00:00Z"),
    reader: "ann",
    activity: null,
    network: null,
    top: [dump("First"), dump("Second"), dump("Third"), dump("Fourth")],
    community: {
      members: [{ username: "cy", invitedBy: "ann" }],
      membersMore: 0,
      playlists: [],
      playlistsMore: 0,
      chatMessages: 1284,
      totals: { dumps: 203, upvotes: 911, comments: 402 },
    },
    links,
  };
  const email = renderDigestEmail(content, {
    style: "melange",
    scheme: "light",
  });
  assertStringIncludes(email.subject, "The month on gerbeur");
  assertStringIncludes(email.html, `width="528"`);
  assertStringIncludes(email.html, "1,284");
  assertStringIncludes(email.html, "invited by you");
  assertStringIncludes(email.html, "Turn off monthly recaps");
  // Only #2 and #3 get a thumbnail beside the hero.
  assert(email.html.match(/<img[^>]*width="64"/g)?.length === 2);
});