import { fireEvent, render, screen } from "@testing-library/react";
import { describe, expect, it, vi } from "vitest";

import MarkdownTextRenderer from "@/components/MarkdownTextRenderer";

describe("MarkdownTextRenderer", () => {
  it("renders clickable markdown links in blue", () => {
    render(<MarkdownTextRenderer>[local server](http://127.0.0.1:7891/)</MarkdownTextRenderer>);

    const link = screen.getByRole("link", { name: "local server" });
    expect(link).toHaveAttribute("href", "http://127.0.0.1:7891/");
    expect(link).toHaveClass("text-blue-500", "dark:text-blue-300");
  });

  it("renders local file links as previewable file references", () => {
    const onOpenFilePreview = vi.fn();
    render(
      <MarkdownTextRenderer onOpenFilePreview={onOpenFilePreview}>
        {"Edited [hook.py](/Users/test/project/nanobot/agent/hook.py:12)"}
      </MarkdownTextRenderer>,
    );

    const reference = screen.getByTestId("inline-file-path");
    expect(reference).toHaveTextContent("hook.py");
    expect(reference).toHaveAttribute(
      "aria-label",
      "/Users/test/project/nanobot/agent/hook.py",
    );

    fireEvent.click(reference);

    expect(onOpenFilePreview).toHaveBeenCalledWith(
      "/Users/test/project/nanobot/agent/hook.py",
    );
  });

  it("does not treat non-file hrefs as previews just because the label looks like a file", () => {
    const onOpenFilePreview = vi.fn();
    render(
      <MarkdownTextRenderer onOpenFilePreview={onOpenFilePreview}>
        {"Download [index.html](/api/media/sig/html)"}
      </MarkdownTextRenderer>,
    );

    expect(screen.queryByTestId("inline-file-path")).not.toBeInTheDocument();
    expect(screen.getByRole("link", { name: "index.html" })).toHaveAttribute(
      "href",
      "/api/media/sig/html",
    );
  });

  it("renders glob file links as plain text instead of preview targets", () => {
    const onOpenFilePreview = vi.fn();
    const { container } = render(
      <MarkdownTextRenderer onOpenFilePreview={onOpenFilePreview}>
        {"原始对话通常还在 [*.json](*.json)。"}
      </MarkdownTextRenderer>,
    );

    expect(screen.queryByTestId("inline-file-path")).not.toBeInTheDocument();
    expect(screen.queryByRole("link", { name: "*.json" })).not.toBeInTheDocument();
    expect(container).toHaveTextContent("*.json");
  });

  it("keeps glob inline code as code instead of a file preview chip", () => {
    render(
      <MarkdownTextRenderer>
        {"检查 `src/**/*.json`。"}
      </MarkdownTextRenderer>,
    );

    expect(screen.queryByTestId("inline-file-path")).not.toBeInTheDocument();
    expect(screen.getByText("src/**/*.json").tagName).toBe("CODE");
  });

  it("does not wrap complete fenced code blocks in an extra pre", () => {
    const { container } = render(
      <MarkdownTextRenderer highlightCode={false}>
        {"当前目录:\n\n```text\n/Users/renxubin/.nanobot/workspace\n```"}
      </MarkdownTextRenderer>,
    );

    expect(screen.getByText("/Users/renxubin/.nanobot/workspace")).toBeInTheDocument();
    expect(container.querySelectorAll("pre")).toHaveLength(1);
    expect(container.querySelector("pre div")).toBeNull();
  });

  it("renders bare fenced code blocks without crashing", () => {
    const { container } = render(
      <MarkdownTextRenderer highlightCode={false}>
        {"Some text\n\n```\ncode without language\n```"}
      </MarkdownTextRenderer>,
    );

    expect(screen.getByText("code without language")).toBeInTheDocument();
    expect(screen.getByText("text")).toBeInTheDocument();
    expect(container.querySelectorAll("pre")).toHaveLength(1);
  });

  it("keeps streaming unfinished fenced code blocks to a single shell", () => {
    const { container } = render(
      <MarkdownTextRenderer highlightCode={false}>
        {"当前目录:\n\n```text\n/Users/renxubin/.nanobot/workspace"}
      </MarkdownTextRenderer>,
    );

    expect(screen.getByText("/Users/renxubin/.nanobot/workspace")).toBeInTheDocument();
    expect(container.querySelectorAll("pre")).toHaveLength(1);
    expect(container.querySelector("pre div")).toBeNull();
  });

  it("renders markdown images as inline previews", () => {
    render(<MarkdownTextRenderer>![Diagram](/api/media/sig/payload)</MarkdownTextRenderer>);

    const image = screen.getByRole("img", { name: "Diagram" });
    expect(image).toHaveAttribute("src", "/api/media/sig/payload");
    expect(screen.getByRole("link", { name: "Open Diagram" })).toHaveAttribute(
      "href",
      "/api/media/sig/payload",
    );
  });

  it("renders markdown videos as inline players", () => {
    render(<MarkdownTextRenderer>![nanobot-intro.mp4](/api/media/sig/video)</MarkdownTextRenderer>);

    const video = screen.getByLabelText("Video attachment: nanobot-intro.mp4");
    expect(video.tagName).toBe("VIDEO");
    expect(video).toHaveAttribute("src", "/api/media/sig/video");
    expect(video).toHaveAttribute("controls");
    expect(screen.queryByRole("img", { name: "nanobot-intro.mp4" })).not.toBeInTheDocument();
  });

  it("renders markdown links with file-looking names as file attachments", () => {
    render(<MarkdownTextRenderer>![index.html](/api/media/sig/html)</MarkdownTextRenderer>);

    expect(screen.getByLabelText("File attachment")).toHaveTextContent("index.html");
    expect(screen.queryByRole("img", { name: "index.html" })).not.toBeInTheDocument();
  });

  it("renders title plus url list items as compact link rows", () => {
    render(
      <MarkdownTextRenderer>
        {
          "Sources:\n\n- Polymarket — “When will GPT-5.6 be released?”\n  https://polymarket.com/event/when-will-gpt-5pt6-be-released\n- Polymarket — “GPT-5.6 released by...?”\n  https://polymarket.com/event/gpt-5pt6-released-by"
        }
      </MarkdownTextRenderer>,
    );

    expect(
      screen.getByRole("link", {
        name: "Open link: Polymarket — When will GPT-5.6 be released?",
      }),
    ).toHaveAttribute(
      "href",
      "https://polymarket.com/event/when-will-gpt-5pt6-be-released",
    );
    expect(
      screen.getByRole("link", {
        name: "Open link: Polymarket — GPT-5.6 released by...?",
      }),
    ).toHaveAttribute("href", "https://polymarket.com/event/gpt-5pt6-released-by");
    expect(screen.queryByText("Polymarket · polymarket.com")).not.toBeInTheDocument();
  });

  it("does not require a source heading for compact link rows", () => {
    render(
      <MarkdownTextRenderer>
        {
          "Useful links:\n\n- Polymarket — “When will GPT-5.6 be released?”\n  https://polymarket.com/event/when-will-gpt-5pt6-be-released"
        }
      </MarkdownTextRenderer>,
    );

    expect(
      screen.getByRole("link", {
        name: "Open link: Polymarket — When will GPT-5.6 be released?",
      }),
    ).toHaveAttribute("href", "https://polymarket.com/event/when-will-gpt-5pt6-be-released");
  });

  it("falls back through favicon sources before showing a globe for compact link rows", () => {
    const { container } = render(
      <MarkdownTextRenderer>
        {
          "Useful links:\n\n- Savills Hong Kong Corporate Relocation — Corporate relocation services\n  https://www.savills.com.hk/services/corporate-relocation.aspx"
        }
      </MarkdownTextRenderer>,
    );
    const link = screen.getByRole("link", {
      name: "Open link: Savills Hong Kong Corporate Relocation — Corporate relocation services",
    });
    const favicon = () => link.querySelector("img");

    expect(favicon()).toHaveAttribute(
      "src",
      "https://www.savills.com.hk/favicon.ico",
    );

    fireEvent.error(favicon()!);
    expect(favicon()).toHaveAttribute(
      "src",
      "https://icons.duckduckgo.com/ip3/www.savills.com.hk.ico",
    );

    fireEvent.error(favicon()!);
    expect(favicon()).toHaveAttribute(
      "src",
      "https://www.google.com/s2/favicons?domain=www.savills.com.hk&sz=64",
    );

    fireEvent.error(favicon()!);
    expect(favicon()).not.toBeInTheDocument();
    expect(link.querySelector("svg")).toBeInTheDocument();
    expect(container).not.toHaveTextContent("SC");
  });

  it("renders media attachments without an extra preview/code wrapper", () => {
    render(<MarkdownTextRenderer>![Diagram](/api/media/sig/payload)</MarkdownTextRenderer>);

    expect(screen.getByRole("img", { name: "Diagram" })).toHaveAttribute(
      "src",
      "/api/media/sig/payload",
    );
    expect(screen.getByRole("link", { name: "Open Diagram" })).toHaveAttribute(
      "href",
      "/api/media/sig/payload",
    );
    expect(screen.queryByRole("button", { name: "Code" })).not.toBeInTheDocument();
  });

  it("renders a safe subset of inline HTML", () => {
    const { container } = render(
      <MarkdownTextRenderer>
        {"<mark>高亮文本</mark>\n\n上标：x<sup>2</sup>\n下标：H<sub>2</sub>O"}
      </MarkdownTextRenderer>,
    );

    expect(container.querySelector("mark")).toHaveTextContent("高亮文本");
    expect(container.querySelector("sup")).toHaveTextContent("2");
    expect(container.querySelector("sub")).toHaveTextContent("2");
  });

  it("keeps unsafe HTML as text", () => {
    const { container } = render(
      <MarkdownTextRenderer>
        {"<script>alert(1)</script>\n\n<mark onclick=\"alert(1)\">bad</mark>"}
      </MarkdownTextRenderer>,
    );

    expect(container.querySelector("script")).toBeNull();
    expect(container.querySelector("mark")).toBeNull();
    expect(container).toHaveTextContent("<script>alert(1)</script>");
    expect(container).toHaveTextContent("<mark onclick=\"alert(1)\">bad</mark>");
  });

  it("renders safe details blocks", () => {
    const { container } = render(
      <MarkdownTextRenderer>
        {
          "<details><summary>点击展开更多内容</summary>\n\n这里是被折叠的内容。\n\n- 可以放列表\n\n</details>"
        }
      </MarkdownTextRenderer>,
    );

    expect(container.querySelector("details")).toBeInTheDocument();
    expect(container.querySelector("summary")).toHaveTextContent("点击展开更多内容");
    expect(screen.getByText("这里是被折叠的内容。")).toBeInTheDocument();
    expect(screen.getByText("可以放列表")).toBeInTheDocument();
    expect(container).not.toHaveTextContent("</details>");
  });

  it("renders task list checkboxes as quiet status marks", () => {
    const { container } = render(
      <MarkdownTextRenderer>
        {"- [x] 写 Markdown 示例\n- [x] 加点 emoji\n- [ ] 测试渲染效果"}
      </MarkdownTextRenderer>,
    );

    expect(container.querySelectorAll("input[type='checkbox']")).toHaveLength(0);
    expect(screen.getAllByTestId("markdown-task-checkbox")).toHaveLength(3);
    expect(container.querySelectorAll(".task-list-item")).toHaveLength(3);
  });

  it("keeps dollar amounts from being parsed as inline math", () => {
    const { container } = render(
      <MarkdownTextRenderer>
        {
          "VBeats mentions $24 million, while Globe states a total of $130.6 million since founding."
        }
      </MarkdownTextRenderer>,
    );

    expect(container).toHaveTextContent(
      "VBeats mentions $24 million, while Globe states a total of $130.6 million since founding.",
    );
    expect(container.querySelector(".katex")).toBeNull();
  });

  it("renders guarded single-dollar inline math", () => {
    const { container } = render(
      <MarkdownTextRenderer>
        {
          "Variables $x$ and powers $2^n$ render inline, while a price range $10-20$ stays literal."
        }
      </MarkdownTextRenderer>,
    );

    expect(container.querySelectorAll(".katex")).toHaveLength(2);
    expect(container).not.toHaveTextContent("$x$");
    expect(container).not.toHaveTextContent("$2^n$");
    expect(container).toHaveTextContent("$10-20$");
  });

  it("renders model-style single-dollar formula lists", () => {
    const { container } = render(
      <MarkdownTextRenderer>
        {[
          "- Fourier transform: $\\hat{f}(\\xi) = \\int_{-\\infty}^{+\\infty} f(x)e^{-2\\pi i x \\xi}\\, dx$",
          "- Taylor expansion: $e^x = \\sum_{n=0}^{\\infty} \\frac{x^n}{n!}$",
          "- KL divergence: $D_\\text{KL}(P || Q) = \\sum_x P(x) \\log \\frac{P(x)}{Q(x)}$",
          "- Quantum state: $\\psi = \\alpha|0\\rangle + \\beta|1\\rangle$",
        ].join("\n")}
      </MarkdownTextRenderer>,
    );

    expect(container.querySelectorAll(".katex")).toHaveLength(4);
    expect(container).not.toHaveTextContent("$\\hat{f}");
    expect(container).not.toHaveTextContent("$D_\\text");
  });

  it("renders TeX inline math delimiters", () => {
    const { container } = render(
      <MarkdownTextRenderer>{"Einstein wrote \\(E = mc^2\\) for mass-energy equivalence."}</MarkdownTextRenderer>,
    );

    expect(container.querySelector(".katex")).toBeInTheDocument();
    expect(container.querySelector(".katex-display")).toBeNull();
    expect(container).not.toHaveTextContent("\\(");
    expect(container).not.toHaveTextContent("\\)");
  });

  it("renders TeX display math delimiters", () => {
    const { container } = render(
      <MarkdownTextRenderer>{"\\[x^2 + y^2 = z^2\\]"}</MarkdownTextRenderer>,
    );

    expect(container.querySelector(".katex-display")).toBeInTheDocument();
    expect(container).not.toHaveTextContent("\\[");
    expect(container).not.toHaveTextContent("\\]");
  });

  it("keeps TeX delimiters inside code literal", () => {
    const { container } = render(
      <MarkdownTextRenderer highlightCode={false}>
        {"Inline `\\(x\\)` stays literal.\n\n```text\n\\[x^2\\]\n```"}
      </MarkdownTextRenderer>,
    );

    expect(container.querySelector(".katex")).toBeNull();
    expect(screen.getByText("\\(x\\)").tagName).toBe("CODE");
    expect(screen.getByText("\\[x^2\\]")).toBeInTheDocument();
  });

  it("still renders explicit math blocks", () => {
    const { container } = render(
      <MarkdownTextRenderer>{"$$x^2 + y^2 = z^2$$"}</MarkdownTextRenderer>,
    );

    expect(container.querySelector(".katex")).toBeInTheDocument();
  });
});