// @vitest-environment jsdom
//
// Library-row metadata: the completed row surfaces the concrete container/format alongside the
// already-shown size. The format chip reads the raw `asset.container` (uppercased in the UI), so it must
// render when present and be absent when the asset has no container yet (queued/running before the worker
// fills it). i18n is key-passthrough here.
import { describe, it, expect, afterEach, vi } from "vitest";
import { render, screen, cleanup, fireEvent } from "@testing-library/react";

vi.mock("react-i18next", async (importOriginal) => {
  const actual = await importOriginal<typeof import("react-i18next")>();
  return {
    ...actual,
    useTranslation: () => ({ i18n: { language: "en" }, t: (key: string) => key }),
  };
});

import { DownloadRow, IconBtn } from "./downloadRow";
import type { DownloadJob } from "../lib/api";

const baseJob: DownloadJob = {
  id: 1,
  status: "done",
  progress: 100,
  speed_bps: null,
  eta_s: null,
  phase: null,
  error: null,
  error_code: null,
  error_detail: null,
  queue_pos: 0,
  created_at: null,
  source_kind: "youtube",
  source_ref: "abc",
  source_url: null,
  poster_url: null,
  profile_id: null,
  spec: {
    mode: "av",
    max_height: null,
    container: null,
    audio_format: null,
    vcodec: null,
    embed_subs: false,
    embed_chapters: false,
    embed_thumbnail: false,
    sponsorblock: false,
  },
  display_name: "Clip",
  display_uploader: null,
  display_uploader_url: null,
  extra_links: [],
  can_download: true,
  expired: false,
  asset: null,
};

const withAsset = (
  container: string | null,
  over: Partial<NonNullable<DownloadJob["asset"]>> = {},
): DownloadJob => ({
  ...baseJob,
  asset: {
    id: 10,
    status: "ready",
    title: "Clip",
    uploader: null,
    uploader_url: null,
    upload_date: null,
    duration_s: 90,
    size_bytes: 148_800_000,
    width: 1920,
    height: 1080,
    container,
    media_kind: "video",
    thumbnail_url: null,
    expires_at: null,
    ...over,
  },
});

afterEach(cleanup);

describe("DownloadRow format chip", () => {
  it("shows the uppercased container next to the size when ready", () => {
    render(<DownloadRow job={withAsset("mp4")} />);
    // Raw container is stored lowercase; the row uppercases it via CSS, so the text node stays "mp4".
    expect(screen.getByText(/·\s*mp4/i)).toBeTruthy();
    expect(screen.getByText(/142 MB/)).toBeTruthy();
  });

  it("omits the format chip when the asset has no container yet", () => {
    const { container } = render(<DownloadRow job={withAsset(null)} />);
    expect(container.textContent).not.toMatch(/·\s*(mp4|m4a|webm)/i);
  });
});

// A generic uploaded file (media_kind='file') has no video frame and no timeline: the row
// shows a neutral file glyph instead of a thumbnail <img>, and no duration chip (it stays media info
// like the container/size). Media rows keep their thumbnail path (an <img>, or empty until a poster).
describe("DownloadRow file kind", () => {
  it("renders a file glyph, not a thumbnail <img>, for a generic file", () => {
    const { container } = render(
      <DownloadRow
        job={withAsset("pdf", { media_kind: "file", duration_s: null, size_bytes: 2_400_000 })}
      />,
    );
    // The file glyph is an inline svg; no <img> element is emitted for a file.
    expect(container.querySelector("img")).toBeNull();
    expect(container.querySelector("svg")).not.toBeNull();
    // File info still reads (container + size), but there is no duration chip.
    expect(screen.getByText(/·\s*pdf/i)).toBeTruthy();
    expect(screen.getByText(/2\.3 MB/)).toBeTruthy();
  });

  it("keeps the thumbnail path (an <img> when a poster exists) for a media asset", () => {
    const { container } = render(
      <DownloadRow job={{ ...withAsset("mp4"), poster_url: "/api/downloads/1/poster.jpg" }} />,
    );
    expect(container.querySelector("img")).not.toBeNull();
  });
});

describe("DownloadRow · keyboard", () => {
  it("is a list item only when it is given a position", () => {
    const { container, rerender } = render(<DownloadRow job={baseJob} navIndex={3} />);
    expect(container.firstElementChild?.getAttribute("data-nav-index")).toBe("3");
    rerender(<DownloadRow job={baseJob} />);
    expect(container.firstElementChild?.hasAttribute("data-nav-index")).toBe(false);
  });

  it("marks the action that opens the row, and only that one", () => {
    render(
      <DownloadRow job={baseJob} navIndex={0}>
        <IconBtn open onClick={() => {}} title="play">
          p
        </IconBtn>
        <IconBtn onClick={() => {}} title="delete">
          d
        </IconBtn>
      </DownloadRow>,
    );
    expect(screen.getByTitle("play").hasAttribute("data-nav-open")).toBe(true);
    expect(screen.getByTitle("delete").hasAttribute("data-nav-open")).toBe(false);
  });

  // The row once resized its actions with a `[&_button]:size-8` override, which a save LINK in the
  // same row escaped (28px beside 32px buttons). The size is the primitive's own rung, set by IconBtn.
  it("sizes its actions through the primitive's rung, not a descendant override", () => {
    const { container } = render(
      <DownloadRow job={baseJob}>
        <IconBtn onClick={() => {}} title="play">
          p
        </IconBtn>
      </DownloadRow>,
    );
    expect(screen.getByTitle("play").className).toContain("size-8");
    expect(container.innerHTML).not.toContain("[&amp;_button]");
  });
});

// The row answers to its own width (a container query) and its meta line never wraps — on
// the iPad, zoomed in, its "18.9 / MB" pieces broke into a jumble (the owner, 2026-09-27). jsdom lays
// nothing out, so this holds the structure the layout rests on; the widths were measured in a browser.
describe("DownloadRow · narrow", () => {
  it("keeps the meta line one cut line of inline text, not a flex row that wraps its pieces", () => {
    const { container } = render(
      <DownloadRow job={{ ...withAsset("mp4"), created_at: "2026-09-20T10:00:00Z" }} />,
    );
    const meta = container.querySelector("[data-dl-meta]")!;
    expect(meta.className.split(/\s+/)).toContain("truncate");
    expect(meta.className).not.toMatch(/(^|\s)(inline-)?flex(\s|$)/);
    for (const el of meta.querySelectorAll("*"))
      expect(el.className.toString()).not.toMatch(/(^|\s)(inline-)?flex(\s|$)/);
  });

  it("is its own size container and stacks below 40rem", () => {
    const { container } = render(<DownloadRow job={withAsset("mp4")} />);
    const row = container.firstElementChild as HTMLElement;
    expect(row.className).toContain("@container/dlrow");
    const grid = row.firstElementChild as HTMLElement;
    expect(grid.className).toContain(
      "@max-[40rem]/dlrow:[grid-template-areas:'thumb_head''meta_meta''foot_foot''prog_prog']",
    );
  });

  it("stacked, puts the source link and the actions on ONE wrapping line, not a line each", () => {
    const { container } = render(
      <DownloadRow job={{ ...withAsset("mp4"), source_url: "https://example.com/v" }}>
        <IconBtn onClick={() => {}} title="play">
          x
        </IconBtn>
      </DownloadRow>,
    );
    const link = container.querySelector("a[href='https://example.com/v']")!;
    const foot = screen.getByTitle("play").closest(".contents")!;
    expect(foot.contains(link)).toBe(true);
    for (const c of ["@max-[40rem]/dlrow:[grid-area:foot]", "@max-[40rem]/dlrow:flex-wrap"])
      expect(foot.className).toContain(c);
  });

  it("gives the failure link a real 24px line on a mouse, not the text's 20 (DESIGN B1)", () => {
    render(
      <DownloadRow job={{ ...baseJob, status: "error", error: "boom" }} onShowError={() => {}} />,
    );
    const link = screen.getByTitle("downloads.errors.fail.title");
    const cls = link.className.split(/\s+/);
    expect(cls).toEqual(expect.arrayContaining(["inline-block", "min-h-6", "leading-6"]));
  });

  it("draws nothing for an empty link list (a bare 0 once leaked into the row)", () => {
    const { container } = render(<DownloadRow job={{ ...withAsset("mp4"), extra_links: [] }} />);
    const walker = document.createTreeWalker(container, NodeFilter.SHOW_TEXT);
    const texts: string[] = [];
    while (walker.nextNode()) texts.push(walker.currentNode.textContent ?? "");
    expect(texts).not.toContain("0");
  });
});

// A link queued (or failed) before its details: the title, the channel line and the link line all
// fell back to the same URL (the owner, 2026-09-27). Now the title IS the short link, once.
describe("DownloadRow · a link with no details yet", () => {
  const bare: DownloadJob = {
    ...baseJob,
    status: "error",
    source_kind: "url",
    source_ref: "https://www.facebook.com/watch?v=12345",
    source_url: "https://www.facebook.com/watch?v=12345",
    display_name: null,
    asset: null,
  };

  it("shows the short link once, as the title's link, with no channel line", () => {
    const { container } = render(<DownloadRow job={bare} />);
    const links = [...container.querySelectorAll("a")].filter((a) => a.href === bare.source_url);
    expect(links.map((a) => a.textContent)).toEqual(["www.facebook.com/watch?v=12345"]);
    expect(container.textContent).not.toContain("https://");
  });

  // Measured at 21px on the Downloads page: every link in the row stands on a 24px line on
  // a mouse (DESIGN B1), as the link line and the failure link already did.
  it("gives the title link and the channel link a 24px line", () => {
    const { container } = render(
      <DownloadRow
        job={{
          ...bare,
          display_uploader: "Someone",
          display_uploader_url: "https://example.com/c",
        }}
      />,
    );
    const title = [...container.querySelectorAll("a")].find((a) => a.href === bare.source_url)!;
    const channel = container.querySelector<HTMLAnchorElement>("a[href='https://example.com/c']")!;
    // inline-block: an inline link's box is the font's height (21px) whatever its line height.
    for (const a of [title, channel])
      expect(a.className.split(/\s+/)).toEqual(
        expect.arrayContaining(["inline-block", "leading-6"]),
      );
  });

  it("keeps the named row as it was: title text, and the link on its own line", () => {
    const named = { ...bare, display_name: "A clip" };
    const { container } = render(<DownloadRow job={named} />);
    expect(screen.getByText("A clip").closest("a")).toBeNull();
    const links = [...container.querySelectorAll("a")].filter((a) => a.href === bare.source_url);
    expect(links.map((a) => a.textContent)).toEqual(["www.facebook.com/watch?v=12345"]);
  });
});

// No picture at all: a quiet glyph of what it is instead of an empty box (the owner, 2026-09-27).
describe("DownloadRow · no picture", () => {
  it("draws a film glyph for a video, a note for audio", () => {
    const { container, unmount } = render(<DownloadRow job={withAsset("mp4")} />);
    expect(container.querySelector("img")).toBeNull();
    expect(container.querySelector("svg.lucide-film")).not.toBeNull();
    unmount();
    const { container: audio } = render(
      <DownloadRow job={withAsset("m4a", { media_kind: "audio" })} />,
    );
    expect(audio.querySelector("svg.lucide-music")).not.toBeNull();
  });
  // The remote thumbnail was the last resort with no fallback of its own — when it
  // failed too (a dead CDN link), the row drew the browser's broken-image mark.
  it("falls back to the glyph when the remote picture fails too", () => {
    const { container } = render(
      <DownloadRow job={withAsset("mp4", { thumbnail_url: "https://cdn.example/dead.jpg" })} />,
    );
    const img = container.querySelector("img")!;
    expect(img.getAttribute("src")).toBe("https://cdn.example/dead.jpg");
    fireEvent.error(img);
    expect(container.querySelector("img")).toBeNull();
    expect(container.querySelector("svg.lucide-film")).not.toBeNull();
  });
});

// The phone-safe conversion reports ffmpeg's real progress, so it gets the % bar a download has;
// a yt-dlp post-step reports none and keeps the pulse.
describe("DownloadRow · a running conversion", () => {
  const running = (phase: string): DownloadJob => ({
    ...baseJob,
    status: "running",
    progress: 40,
    phase,
  });

  it("shows its phase and its %", () => {
    const { container } = render(<DownloadRow job={running("converting")} />);
    expect(screen.getByText("downloads.phase.converting")).toBeTruthy();
    expect(screen.getByText("40%")).toBeTruthy();
    expect(container.querySelector(".animate-pulse")).toBeNull();
  });

  it("a post-step with no % keeps the pulse", () => {
    const { container } = render(<DownloadRow job={running("merging")} />);
    expect(screen.queryByText("40%")).toBeNull();
    expect(container.querySelector(".animate-pulse")).not.toBeNull();
  });
});