// @vitest-environment jsdom

import type { ReactNode } from "react";
import type { IssueAttachment } from "@paperclipai/shared";
import { flushSync } from "react-dom";
import { createRoot, type Root } from "react-dom/client";
import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
import { ThemeProvider } from "@/context/ThemeContext";
import { IssueGalleryContext } from "@/context/IssueGalleryContext";
import { TaskChatBubble } from "./TaskChatBubble";
import { paperclipHumanAvatarUrl } from "@/lib/issue-chat-human-author";
import type { TaskChatMessageItem } from "./task-chat-model";

describe("TaskChatBubble attachment chips", () => {
  let container: HTMLDivElement;
  let root: Root | null = null;

  beforeEach(() => {
    container = document.createElement("div");
    document.body.appendChild(container);
    root = createRoot(container);
  });

  afterEach(() => {
    flushSync(() => root?.unmount());
    root = null;
    container.remove();
  });

  function renderMessage(
    text: string,
    author: TaskChatMessageItem["author"] = "human",
    attachments: IssueAttachment[] = [],
  ) {
    const item: TaskChatMessageItem = { id: "m1", kind: "message", author, text };
    flushSync(() =>
      root!.render(
        <ThemeProvider>
          <TaskChatBubble item={item} attachments={attachments} />
        </ThemeProvider>,
      ),
    );
  }

  it("renders another human on the left like an agent, and moves them right when they become the viewer", () => {
    const item: TaskChatMessageItem = {
      id: "sam-comment", kind: "message", author: "human", text: "I still see the old task title.",
      authorUserId: "sam", authorName: "Sam Rivera", isCurrentUser: false,
    };
    const render = (isCurrentUser: boolean) => flushSync(() => root!.render(
      <ThemeProvider><TaskChatBubble item={{ ...item, isCurrentUser }} /></ThemeProvider>,
    ));
    render(false);
    const identity = container.querySelector('[data-testid="task-chat-human-identity"]');
    expect(identity?.textContent).toContain("Sam Rivera");
    expect(identity?.querySelector('[data-slot="avatar-fallback"]')?.textContent).toBe("SR");
    expect(identity?.getAttribute("data-author-user-id")).toBe("sam");
    expect(container.querySelector('[data-testid="task-chat-human-bubble"]')?.parentElement?.classList.contains("items-start")).toBe(true);
    const bubble = container.querySelector('[data-testid="task-chat-human-bubble"]');
    expect(bubble?.className).toContain("bg-transparent");
    expect(bubble?.className).not.toContain("bg-(--liveness-blue)");
    expect(bubble?.querySelector(".paperclip-markdown")?.className).not.toContain("paperclip-markdown-on-accent");
    render(true);
    expect(bubble?.parentElement?.classList.contains("items-end")).toBe(true);
    expect(bubble?.className).toContain("bg-(--liveness-blue)");
    expect(container.querySelector('[data-testid="task-chat-human-identity"]')).toBeNull();
    expect(container.textContent).toContain("I still see the old task title.");
  });

  it("uses initials instead of loading an external human avatar", () => {
    flushSync(() => root!.render(
      <ThemeProvider><TaskChatBubble item={{
        id: "external-avatar", kind: "message", author: "human", text: "Please check this.",
        authorName: "Sam Rivera", authorAvatarUrl: "https://example.com/track.png", isCurrentUser: false,
      }} /></ThemeProvider>,
    ));
    const identity = container.querySelector('[data-testid="task-chat-human-identity"]');
    expect(identity?.querySelector("img")).toBeNull();
    expect(identity?.querySelector('[data-slot="avatar-fallback"]')?.textContent).toBe("SR");
    expect(paperclipHumanAvatarUrl("/api/assets/sam/content")).toBe("/api/assets/sam/content");
    expect(paperclipHumanAvatarUrl("https://example.com/track.png")).toBeNull();
    expect(paperclipHumanAvatarUrl("//example.com/track.png")).toBeNull();
  });

  it("shows persistent iMessage attribution only on inbound human bubbles", () => {
    for (const author of ["human", "agent"] as const) {
      flushSync(() => root!.render(
        <ThemeProvider>
          <TaskChatBubble item={{ id: "photon", kind: "message", author, text: "A reply", timestamp: "1:56 PM", sourceChannel: "imessage-photon" }} />
        </ThemeProvider>,
      ));
      expect(container.textContent?.includes("Sent from iMessage")).toBe(author === "human");
    }
    renderMessage("Board reply");
    expect(container.textContent).not.toContain("Sent from iMessage");
  });

  it("opens attachment images in the shared task gallery", () => {
    const openGallery = vi.fn(() => true);
    const contentPath = "/api/attachments/shared-image/content";
    flushSync(() => root!.render(
      <ThemeProvider>
        <IssueGalleryContext.Provider value={openGallery}>
          <TaskChatBubble item={{ id: "m1", kind: "message", author: "agent", text: `![Proof](${contentPath})` }} />
        </IssueGalleryContext.Provider>
      </ThemeProvider>,
    ));
    const image = container.querySelector<HTMLImageElement>(`img[src="${contentPath}"]`);
    expect(image).not.toBeNull();
    flushSync(() => image!.click());
    expect(openGallery).toHaveBeenCalledWith(contentPath);
    expect(document.querySelector('[role="dialog"]')).toBeNull();
  });

  it("renders a file reference as an attachment chip linking to the file", () => {
    renderMessage("Here you go.\n\n[notes.txt](/api/attachments/abc/content) ");

    const group = container.querySelector('[data-testid="task-chat-bubble-attachments"]');
    expect(group).not.toBeNull();
    expect(group?.textContent).toContain("notes.txt");
    expect(group?.textContent).toContain("Text");
    const link = group?.querySelector<HTMLAnchorElement>("a[href='/api/attachments/abc/content']");
    expect(link).not.toBeNull();
    // The link-only line left the rendered body; the prose stayed.
    expect(container.textContent).toContain("Here you go.");
    expect(container.textContent).not.toContain("(/api/attachments/abc/content)");
  });

  it("renders a chip-only row when the message body is just the file link", () => {
    renderMessage("[report.pdf](/api/attachments/r1/content)", "agent");

    expect(container.querySelector('[data-testid="task-chat-bubble-attachments"]')).not.toBeNull();
    // No empty bubble is left behind once the only line is chipped.
    expect(container.textContent).toContain("report.pdf");
    expect(container.textContent).toContain("PDF");
  });

  it("opens video thumbnails in a local gallery when no task gallery is available", () => {
    renderMessage("[clip.mp4](/api/attachments/clip/content)", "agent", [
      attachment({ id: "clip", originalFilename: "clip.mp4", contentType: "video/mp4" }),
    ]);
    const group = container.querySelector('[data-testid="task-chat-bubble-attachments"]');
    expect(group?.querySelector("video")?.getAttribute("src")).toBe("/api/attachments/clip/content");
    expect(group?.querySelector("video")?.autoplay).toBe(false);
    flushSync(() => group!.querySelector<HTMLButtonElement>('button[aria-label="Open clip.mp4"]')!.click());
    expect(document.querySelector('[role="dialog"] video')?.getAttribute("src")).toBe("/api/attachments/clip/content");
    expect(document.querySelector('[role="dialog"] a[download]')?.getAttribute("href")).toBe("/api/attachments/clip/content?download=1");
  });

  it.each(["video/mp4", "application/octet-stream"])("opens %s video attachments in the shared task gallery", (contentType) => {
    const openGallery = vi.fn(() => true);
    const clip = attachment({ id: "clip", originalFilename: "clip.mp4", contentType });
    flushSync(() => root!.render(
      <ThemeProvider>
        <IssueGalleryContext.Provider value={openGallery}>
          <TaskChatBubble item={{ id: "m1", kind: "message", author: "agent", text: `[clip.mp4](${clip.contentPath})` }} attachments={[clip]} />
        </IssueGalleryContext.Provider>
      </ThemeProvider>,
    ));
    flushSync(() => container.querySelector<HTMLButtonElement>('button[aria-label="Open clip.mp4"]')!.click());
    expect(openGallery).toHaveBeenCalledWith(clip.contentPath);
    expect(document.querySelector('[role="dialog"]')).toBeNull();
  });

  it("leaves messages without file references untouched", () => {
    renderMessage("Just words and a [normal link](https://example.com).");

    expect(container.querySelector('[data-testid="task-chat-bubble-attachments"]')).toBeNull();
    expect(container.textContent).toContain("Just words");
  });

  it("renders an extensionless PNG attachment as a thumbnail", () => {
    renderMessage(
      "Done.\n\n[desktop Default](/api/attachments/img/content)",
      "agent",
      [
        attachment({
          id: "img",
          originalFilename: "desktop Default",
          contentType: "image/png",
          byteSize: 4096,
        }),
      ],
    );

    const media = container.querySelector('[data-testid="task-chat-bubble-media"]');
    expect(media).not.toBeNull();
    expect(media?.querySelector("img")?.getAttribute("alt")).toBe("desktop Default");
    expect(container.querySelector('[data-testid="task-chat-bubble-attachments"]')).toBeNull();
  });

  it("shows three thumbnails and an overflow tile for five images", () => {
    const links = Array.from(
      { length: 5 },
      (_, index) => `[shot ${index + 1}](/api/attachments/img${index + 1}/content)`,
    ).join("\n");
    const attachments = Array.from({ length: 5 }, (_, index) =>
      attachment({
        id: `img${index + 1}`,
        originalFilename: `shot ${index + 1}`,
        contentType: "image/png",
      }),
    );
    renderMessage(links, "agent", attachments);

    const media = container.querySelector('[data-testid="task-chat-bubble-media"]');
    expect(media?.querySelectorAll("img")).toHaveLength(3);
    expect(media?.textContent).toContain("+2");

    const secondThumbnail = media?.querySelectorAll("button")[1];
    flushSync(() => secondThumbnail?.click());
    expect(document.body.textContent).toContain("2 / 5");
  });

  it("shows a typed file chip with its stored size", () => {
    renderMessage(
      "[verification.log](/api/attachments/log/content)",
      "agent",
      [
        attachment({
          id: "log",
          originalFilename: "verification.log",
          contentType: "text/plain",
          byteSize: 14 * 1024,
        }),
      ],
    );

    const group = container.querySelector('[data-testid="task-chat-bubble-attachments"]');
    expect(group?.textContent).toContain("Log · 14.0 KB");
  });

  it("renders only the provider attachments bound to this comment without Markdown refs", () => {
    renderMessage("Please inspect both files.", "human", [
      attachment({
        id: "photo",
        originalFilename: "evidence.png",
        contentType: "image/png",
        byteSize: 4096,
      }),
      attachment({
        id: "notes",
        originalFilename: "notes.txt",
        contentType: "text/plain",
        byteSize: 128,
      }),
      attachment({
        id: "other-comment",
        issueCommentId: "m2",
        originalFilename: "unrelated.txt",
        contentType: "text/plain",
      }),
    ]);

    expect(
      container.querySelector('[data-testid="task-chat-bubble-media"] img')
        ?.getAttribute("alt"),
    ).toBe("evidence.png");
    expect(container.textContent).toContain("Images · 1");
    const group = container.querySelector(
      '[data-testid="task-chat-bubble-attachments"]',
    );
    expect(group?.textContent).toContain("notes.txt");
    expect(group?.textContent).not.toContain("unrelated.txt");
  });

  it("does not duplicate a bound attachment already referenced in the comment", () => {
    renderMessage(
      "[notes.txt](/api/attachments/notes/content)",
      "human",
      [
        attachment({
          id: "notes",
          originalFilename: "notes.txt",
          contentType: "text/plain",
        }),
      ],
    );

    const group = container.querySelector(
      '[data-testid="task-chat-bubble-attachments"]',
    );
    expect(group?.querySelectorAll("a")).toHaveLength(1);
    expect(container.textContent).toContain("Files · 1");
  });
});

function attachment(overrides: Partial<IssueAttachment>): IssueAttachment {
  const id = overrides.id ?? "attachment";
  return {
    id,
    companyId: "company",
    issueId: "issue",
    issueCommentId: "m1",
    assetId: `asset-${id}`,
    provider: "paperclip",
    objectKey: id,
    contentType: "application/octet-stream",
    byteSize: 1,
    sha256: id,
    originalFilename: id,
    createdByAgentId: "agent",
    createdByUserId: null,
    createdAt: new Date("2026-09-02T00:00:00Z"),
    updatedAt: new Date("2026-09-02T00:00:00Z"),
    contentPath: `/api/attachments/${id}/content`,
    openPath: `/api/attachments/${id}/content`,
    downloadPath: `/api/attachments/${id}/content?download=1`,
    ...overrides,
  };
}

describe("TaskChatBubble accent-bubble text color", () => {
  let container: HTMLDivElement;
  let root: Root | null = null;

  beforeEach(() => {
    container = document.createElement("div");
    document.body.appendChild(container);
    root = createRoot(container);
  });

  afterEach(() => {
    flushSync(() => root?.unmount());
    root = null;
    container.remove();
  });

  function render(item: TaskChatMessageItem) {
    flushSync(() =>
      root!.render(
        <ThemeProvider>
          <TaskChatBubble item={item} />
        </ThemeProvider>,
      ),
    );
  }

  it("marks the own-message markdown as on-accent so prose text follows text-white", () => {
    render({ id: "m1", kind: "message", author: "human", isCurrentUser: true, text: "when a new task is created…" });
    const body = container.querySelector(".paperclip-markdown");
    expect(body).not.toBeNull();
    // Without this class the light-mode prose body color reads as black on blue.
    expect(body?.className).toContain("paperclip-markdown-on-accent");
  });

  it("leaves the neutral agent bubble on default prose colors", () => {
    render({ id: "m1", kind: "message", author: "agent", authorName: "CEO", text: "Final reply." });
    const body = container.querySelector(".paperclip-markdown");
    expect(body).not.toBeNull();
    expect(body?.className).not.toContain("paperclip-markdown-on-accent");
  });
});

describe("TaskChatBubble agent page-surface treatment", () => {
  it("does not show an on-behalf-of badge in the new task view", () => {
    const container = document.createElement("div");
    document.body.appendChild(container);
    const root = createRoot(container);

    flushSync(() =>
      root.render(
        <ThemeProvider>
          <TaskChatBubble
            item={{ id: "attributed", kind: "message", author: "agent", authorName: "Fable", onBehalfOfUserName: "Dotta", text: "Done." }}
          />
        </ThemeProvider>,
      ),
    );

    expect(container.textContent).toContain("Fable");
    expect(container.textContent).not.toContain("for Dotta");
    expect(container.querySelector('[data-testid="comment-attribution-chip"]')).toBeNull();

    flushSync(() => root.unmount());
    container.remove();
  });

  it("renders agent prose without a card background or constrained width", () => {
    const container = document.createElement("div");
    document.body.appendChild(container);
    const root = createRoot(container);

    flushSync(() =>
      root.render(
        <ThemeProvider>
          <TaskChatBubble
            item={{ id: "agent-message", kind: "message", author: "agent", authorName: "Codex", text: "A long-form agent response" }}
          />
        </ThemeProvider>,
      ),
    );

    const bubble = container.querySelector('[data-testid="task-chat-agent-bubble"]');
    expect(bubble).not.toBeNull();
    expect(bubble?.className).toContain("w-full");
    expect(bubble?.className).toContain("bg-transparent");
    expect(bubble?.className).toContain("px-1");
    expect(bubble?.className).not.toContain("rounded-2xl");
    expect(bubble?.className).not.toContain("bg-(--bubble-agent)");
    expect(bubble?.className).not.toContain("max-w-(--pct-85)");

    flushSync(() => root.unmount());
    container.remove();
  });
});

describe("TaskChatBubble verification caveats", () => {
  it("renders non-blocking not-run verification beneath the durable agent reply", () => {
    const container = document.createElement("div");
    document.body.appendChild(container);
    const root = createRoot(container);

    flushSync(() => root.render(
      <ThemeProvider>
        <TaskChatBubble item={{
          id: "agent-message",
          kind: "message",
          author: "agent",
          authorName: "Runner",
          text: "The implementation is complete.",
          verificationCaveats: [{
            commandOrCheck: "Run npm test",
            reasonCode: "tool_unavailable",
            detail: "Node and npm are unavailable in this environment.",
          }],
        }} />
      </ThemeProvider>,
    ));

    const caveat = container.querySelector('[data-testid="task-chat-verification-caveats"]');
    expect(caveat?.textContent).toContain("Verification caveat");
    expect(caveat?.textContent).toContain("Run npm test");
    expect(caveat?.textContent).toContain("tool unavailable");
    expect(caveat?.textContent).toContain("Node and npm are unavailable");

    flushSync(() => root.unmount());
    container.remove();
  });
});

describe("TaskChatBubble interstitial self-talk (PAP-357)", () => {
  let container: HTMLDivElement;
  let root: Root | null = null;

  beforeEach(() => {
    container = document.createElement("div");
    document.body.appendChild(container);
    root = createRoot(container);
  });

  afterEach(() => {
    flushSync(() => root?.unmount());
    root = null;
    container.remove();
  });

  function renderItem(item: TaskChatMessageItem) {
    flushSync(() =>
      root!.render(
        <ThemeProvider>
          <TaskChatBubble item={item} />
        </ThemeProvider>,
      ),
    );
  }

  it("renders nothing — self-talk is ambient signal, suppressed in this view", () => {
    renderItem({
      id: "m1",
      kind: "message",
      author: "agent",
      authorName: "CEO",
      text: "Let me check the **adapter** first.",
      interstitial: true,
      streaming: true,
    });
    expect(container.textContent).toBe("");
    expect(container.querySelector('[data-testid="task-chat-agent-avatar"]')).toBeNull();
  });

  it("keeps the bubble and avatar header for non-interstitial agent replies", () => {
    renderItem({
      id: "m1",
      kind: "message",
      author: "agent",
      authorName: "CEO",
      text: "Final reply.",
    });
    expect(container.querySelector('[data-testid="task-chat-interstitial"]')).toBeNull();
    expect(container.querySelector('[data-testid="task-chat-agent-avatar"]')).not.toBeNull();
    expect(container.textContent).toContain("CEO");
  });
});

describe("TaskChatBubble footer line (round 9)", () => {
  let container: HTMLDivElement;
  let root: Root | null = null;

  beforeEach(() => {
    container = document.createElement("div");
    document.body.appendChild(container);
    root = createRoot(container);
  });

  afterEach(() => {
    flushSync(() => root?.unmount());
    root = null;
    container.remove();
  });

  function renderBubble(item: TaskChatMessageItem, attachedTurn?: ReactNode) {
    flushSync(() =>
      root!.render(
        <ThemeProvider>
          <TaskChatBubble item={item} attachedTurn={attachedTurn} />
        </ThemeProvider>,
      ),
    );
  }

  it("shows the timestamp always — not only on hover", () => {
    renderBubble({ id: "m1", kind: "message", author: "agent", authorName: "CEO", text: "Done.", timestamp: "2:34 PM" });
    const stamp = [...container.querySelectorAll("span")].find((el) => el.textContent === "2:34 PM");
    expect(stamp).not.toBeNull();
    expect(stamp?.className).not.toContain("opacity-0");
    expect(stamp?.className).not.toContain("group-hover");
  });

  it("renders the attached turn in place of the plain timestamp footer", () => {
    renderBubble(
      { id: "m1", kind: "message", author: "agent", authorName: "CEO", text: "Done.", timestamp: "2:34 PM" },
      <div data-testid="fake-attached-turn">2:34 PM · Worked</div>,
    );
    const slot = container.querySelector('[data-testid="task-chat-bubble-attached-turn"]');
    expect(slot).not.toBeNull();
    expect(slot?.querySelector('[data-testid="fake-attached-turn"]')).not.toBeNull();
    // The plain footer timestamp is replaced (the attached line carries it).
    const plain = [...container.querySelectorAll("span")].filter((el) => el.textContent === "2:34 PM");
    expect(plain).toHaveLength(0);
  });
});

describe("TaskChatBubble footer actions (PAP-413)", () => {
  let container: HTMLDivElement;
  let root: Root | null = null;

  beforeEach(() => {
    container = document.createElement("div");
    document.body.appendChild(container);
    root = createRoot(container);
  });

  afterEach(() => {
    flushSync(() => root?.unmount());
    root = null;
    container.remove();
  });

  function render(item: TaskChatMessageItem, opts?: { attachedTurn?: ReactNode; actions?: ReactNode }) {
    flushSync(() =>
      root!.render(
        <ThemeProvider>
          <TaskChatBubble item={item} attachedTurn={opts?.attachedTurn} actions={opts?.actions} />
        </ThemeProvider>,
      ),
    );
  }

  const actions = <div data-testid="fake-actions">actions</div>;

  it("hands actions to the attached turn (not this wrapper) so they ride the summary row", () => {
    render(
      { id: "m1", kind: "message", author: "agent", authorName: "CEO", text: "Done.", timestamp: "2:34 PM" },
      { attachedTurn: <div data-testid="fake-attached-turn">2:34 PM · Worked</div>, actions },
    );
    const slot = container.querySelector('[data-testid="task-chat-bubble-attached-turn"]');
    expect(slot).not.toBeNull();
    // The turn owns the footer line; the bubble no longer places actions beside
    // it (they ride the turn's `leading` slot, anchored to the summary line).
    expect(slot?.querySelector('[data-testid="fake-attached-turn"]')).not.toBeNull();
    expect(slot?.querySelector('[data-testid="fake-actions"]')).toBeNull();
  });

  it("keeps runless timestamp left and actions at the stable right edge", () => {
    render(
      { id: "m1", kind: "message", author: "agent", authorName: "CEO", text: "Done.", timestamp: "2:34 PM" },
      { actions },
    );
    expect(container.querySelector('[data-testid="fake-actions"]')).not.toBeNull();
    const stamp = [...container.querySelectorAll("span")].find((el) => el.textContent === "2:34 PM");
    expect(stamp).not.toBeNull();
    const actionNode = container.querySelector('[data-testid="fake-actions"]')!;
    expect(stamp!.compareDocumentPosition(actionNode) & Node.DOCUMENT_POSITION_FOLLOWING).not.toBe(0);
    expect(actionNode.parentElement?.className).toContain("justify-between");
  });

  it("omits the actions row entirely when none are supplied (human bubble)", () => {
    render({ id: "m1", kind: "message", author: "human", text: "Hi", timestamp: "2:34 PM" });
    expect(container.querySelector('[data-testid="fake-actions"]')).toBeNull();
    const stamp = [...container.querySelectorAll("span")].find((el) => el.textContent === "2:34 PM");
    expect(stamp).not.toBeNull();
  });
});