import { describe, expect, it, vi } from "vitest";
import { buildContextItems } from "./chat-context-items";
import type { AgentMessageComment } from "@/lib/state/slices/comments";
import type { FileContextItem } from "@/lib/types/context";

const comment: AgentMessageComment = {
  id: "message-comment-1",
  sessionId: "session-1",
  source: "agent-message",
  messageId: "reply-1",
  selectedText: "selected answer",
  anchor: {
    messageId: "reply-1",
    start: 0,
    end: 15,
    selectedText: "selected answer",
    prefix: "",
    suffix: " continues",
  },
  text: "Please clarify this.",
  createdAt: "2026-07-20T00:00:00Z",
  status: "pending",
};

describe("buildContextItems agent-message comments", () => {
  it("creates one removable context item for pending message comments", () => {
    const items = buildContextItems({
      planContextEnabled: false,
      contextFiles: [],
      resolvedSessionId: "session-1",
      removeContextFile: vi.fn(),
      unpinFile: vi.fn(),
      addPlan: vi.fn(),
      promptsMap: new Map(),
      pendingCommentsByFile: {},
      handleRemoveCommentFile: vi.fn(),
      handleRemoveComment: vi.fn(),
      planComments: [],
      handleClearPlanComments: vi.fn(),
      pendingPRFeedback: [],
      handleRemovePRFeedback: vi.fn(),
      handleClearPRFeedback: vi.fn(),
      walkthroughComments: [],
      handleRemoveWalkthroughComment: vi.fn(),
      handleClearWalkthroughComments: vi.fn(),
      messageComments: [comment],
      handleClearMessageComments: vi.fn(),
      taskId: "task-1",
    } as never);

    const item = items.find((candidate) => candidate.kind === "agent-message-comment");
    expect(item).toMatchObject({
      kind: "agent-message-comment",
      label: "1 message comment",
    });
  });
});

describe("buildContextItems task plan comments", () => {
  it("opens the Plan but cannot remove shared comments from a session composer", () => {
    const addPlan = vi.fn();
    const clear = vi.fn();
    const items = buildContextItems({
      planContextEnabled: false,
      contextFiles: [],
      resolvedSessionId: "session-secondary",
      removeContextFile: vi.fn(),
      unpinFile: vi.fn(),
      addPlan,
      promptsMap: new Map(),
      pendingCommentsByFile: {},
      handleRemoveCommentFile: vi.fn(),
      handleRemoveComment: vi.fn(),
      planComments: [{ id: "comment-1", version: 1 }],
      handleClearPlanComments: clear,
      pendingPRFeedback: [],
      handleRemovePRFeedback: vi.fn(),
      handleClearPRFeedback: vi.fn(),
      walkthroughComments: [],
      handleRemoveWalkthroughComment: vi.fn(),
      handleClearWalkthroughComments: vi.fn(),
      messageComments: [],
      handleClearMessageComments: vi.fn(),
      taskId: "task-1",
    } as never);

    const item = items.find((candidate) => candidate.kind === "plan-comment");
    expect(item).toMatchObject({ kind: "plan-comment", label: "1 plan comment", onOpen: addPlan });
    expect(item?.onRemove).toBeUndefined();
    expect(clear).not.toHaveBeenCalled();
  });
});

describe("buildContextItems task preview feedback", () => {
  it("opens the task-scoped collection from the context chip", () => {
    const open = vi.fn();
    const items = buildContextItems({
      planContextEnabled: false,
      contextFiles: [],
      resolvedSessionId: "session-secondary",
      removeContextFile: vi.fn(),
      unpinFile: vi.fn(),
      addPlan: vi.fn(),
      promptsMap: new Map(),
      pendingCommentsByFile: {},
      handleRemoveCommentFile: vi.fn(),
      handleRemoveComment: vi.fn(),
      planComments: [],
      handleClearPlanComments: vi.fn(),
      previewFeedback: [
        {
          id: "preview-1",
          version: 2,
          comment: "Increase contrast",
          kind: "element",
          source_label: "Checkout preview",
          page_route: "/cart",
        },
      ],
      pendingPRFeedback: [],
      handleRemovePRFeedback: vi.fn(),
      handleClearPRFeedback: vi.fn(),
      walkthroughComments: [],
      handleRemoveWalkthroughComment: vi.fn(),
      handleClearWalkthroughComments: vi.fn(),
      messageComments: [],
      handleClearMessageComments: vi.fn(),
      taskId: "task-1",
      onOpenPreviewFeedback: open,
    } as never);

    const item = items.find((candidate) => candidate.kind === "preview-feedback");
    expect(item).toMatchObject({
      kind: "preview-feedback",
      label: "1 preview feedback item",
      onOpen: open,
    });
    expect(item?.onRemove).toBeUndefined();
  });
});

describe("buildContextItems file and directory context", () => {
  function buildItems(contextFiles: never[]) {
    return buildContextItems({
      planContextEnabled: false,
      contextFiles,
      resolvedSessionId: "session-1",
      removeContextFile: vi.fn(),
      unpinFile: vi.fn(),
      addPlan: vi.fn(),
      promptsMap: new Map(),
      onOpenFile: vi.fn(),
      pendingCommentsByFile: {},
      handleRemoveCommentFile: vi.fn(),
      handleRemoveComment: vi.fn(),
      planComments: [],
      handleClearPlanComments: vi.fn(),
      pendingPRFeedback: [],
      handleRemovePRFeedback: vi.fn(),
      handleClearPRFeedback: vi.fn(),
      walkthroughComments: [],
      handleRemoveWalkthroughComment: vi.fn(),
      handleClearWalkthroughComments: vi.fn(),
      messageComments: [],
      handleClearMessageComments: vi.fn(),
      taskId: "task-1",
    });
  }

  it("marks directory items and does not expose file-open behavior", () => {
    const items = buildItems([
      { path: "src", name: "src", isDirectory: true },
      { path: "src/index.ts", name: "index.ts" },
    ] as never[]);

    expect(items).toEqual(
      expect.arrayContaining([
        expect.objectContaining({ kind: "file", path: "src", isDirectory: true }),
        expect.objectContaining({ kind: "file", path: "src/index.ts", isDirectory: false }),
      ]),
    );
    const fileItems = items.filter((item): item is FileContextItem => item.kind === "file");
    const directoryItem = fileItems.find((item) => item.id === "src");
    const fileItem = fileItems.find((item) => item.id === "src/index.ts");
    expect(directoryItem?.onOpen).toBeUndefined();
    expect(fileItem?.onOpen).toEqual(expect.any(Function));
  });
});

it.each(["api", ""])("opens whole-file composer context in repository %j", (repositoryName) => {
  const onOpenFileAtLine = vi.fn();
  const items = buildContextItems({
    planContextEnabled: false,
    contextFiles: [],
    resolvedSessionId: "session-1",
    removeContextFile: vi.fn(),
    unpinFile: vi.fn(),
    addPlan: vi.fn(),
    promptsMap: new Map(),
    pendingCommentsByFile: {
      file: [
        {
          source: "review-file",
          id: "whole",
          sessionId: "session-1",
          repositoryName,
          filePath: "README.md",
          text: "Feedback",
          status: "pending",
          createdAt: "now",
        },
      ],
    },
    handleRemoveCommentFile: vi.fn(),
    handleRemoveComment: vi.fn(),
    onOpenFileAtLine,
    planComments: [],
    handleClearPlanComments: vi.fn(),
    pendingPRFeedback: [],
    handleRemovePRFeedback: vi.fn(),
    handleClearPRFeedback: vi.fn(),
    walkthroughComments: [],
    handleRemoveWalkthroughComment: vi.fn(),
    handleClearWalkthroughComments: vi.fn(),
    messageComments: [],
    handleClearMessageComments: vi.fn(),
    taskId: "task-1",
  });
  const item = items.find((candidate) => candidate.kind === "comment");
  item?.onOpen?.();
  expect(onOpenFileAtLine).toHaveBeenCalledWith("README.md", repositoryName);
  expect(item).toHaveProperty("repositoryName", repositoryName);
});