import type { ComponentType } from "react";
import { cleanup, fireEvent, render, screen } from "@testing-library/react";
import { afterEach, describe, expect, it, vi } from "vitest";
import type { EntityReference, EntityReferenceSearchGroup } from "@/lib/types/entity-reference";
import * as entityReferenceMenus from "./entity-reference-menu";

afterEach(cleanup);

const unavailableSearchGroups: EntityReferenceSearchGroup[] = [
  {
    source: "gitlab_issues",
    provider: "gitlab",
    kind: "issue",
    display_name: "GitLab",
    kind_label: "Issue",
    status: "unsupported_scope",
    results: [],
  },
  {
    source: "linear_issues",
    provider: "linear",
    kind: "issue",
    display_name: "Linear",
    kind_label: "Issue",
    status: "not_configured",
    results: [],
  },
  {
    source: "github_issues",
    provider: "github",
    kind: "issue",
    display_name: "GitHub",
    kind_label: "Issue",
    status: "timeout",
    results: [],
  },
];

const kandevTaskGroup: EntityReferenceSearchGroup = {
  source: "kandev_tasks",
  provider: "kandev",
  kind: "task",
  display_name: "Kandev tasks",
  kind_label: "Task",
  status: "ok",
  results: [
    {
      version: 1,
      ref: "mention:v1:kandev:task:workspace-1:task-1",
      provider: "kandev",
      kind: "task",
      id: "task-1",
      key: "",
      title: "Existing task",
      url: "/t/task-1",
      scope: "workspace-1",
    },
  ],
};

const githubIssueGroup: EntityReferenceSearchGroup = {
  source: "github_issues",
  provider: "github",
  kind: "issue",
  display_name: "GitHub",
  kind_label: "Issue",
  status: "ok",
  results: [
    {
      version: 1,
      ref: "mention:v1:github:issue:octo%2Frepo:7",
      provider: "github",
      kind: "issue",
      id: "7",
      key: "#7",
      title: "External issue",
      url: "https://github.com/octo/repo/issues/7",
      scope: "octo/repo",
    },
  ],
};

type EntityReferenceMenuProps = {
  isOpen: boolean;
  clientRect: () => DOMRect;
  groups: EntityReferenceSearchGroup[];
  query: string;
  selectedIndex: number;
  isSearching: boolean;
  error: null;
  onRetry: () => void;
  onSelect: (reference: EntityReference) => void;
  onClose: () => void;
  setSelectedIndex: (index: number) => void;
};

const EntityReferenceMenu =
  entityReferenceMenus.EntityReferenceMenu as unknown as ComponentType<EntityReferenceMenuProps>;

function renderEntityReferenceMenu(
  groups: EntityReferenceSearchGroup[],
  onSelect: (reference: EntityReference) => void,
) {
  render(
    <EntityReferenceMenu
      isOpen
      clientRect={() => new DOMRect(16, 240, 1, 20)}
      groups={groups}
      query="auth"
      selectedIndex={0}
      isSearching={false}
      error={null}
      onRetry={vi.fn()}
      onSelect={onSelect}
      onClose={vi.fn()}
      setSelectedIndex={vi.fn()}
    />,
  );
}

describe("EntityReferenceMenu", () => {
  it("provides a menu distinct from @ context mentions", () => {
    expect(typeof (entityReferenceMenus as Record<string, unknown>).EntityReferenceMenu).toBe(
      "function",
    );
  });

  it("renders descriptor-driven groups with a generic fallback and 44px touch rows", () => {
    const reference: EntityReference = {
      version: 1,
      ref: "mention:v1:plugin:acme:incident:scope:incident-9",
      provider: "plugin:acme:tracker",
      kind: "incident",
      id: "incident-9",
      key: "INC-9",
      title: "Authentication outage",
      url: "https://tracker.example.test/incidents/9",
      scope: "tracker.example.test/team-a",
    };
    const groups: EntityReferenceSearchGroup[] = [
      {
        source: "plugin:acme:incidents",
        provider: reference.provider,
        kind: reference.kind,
        display_name: "Acme tracker",
        kind_label: "Incident",
        status: "ok",
        results: [reference],
      },
    ];
    const onSelect = vi.fn();
    renderEntityReferenceMenu(groups, onSelect);

    expect(screen.getByText("Acme tracker")).toBeTruthy();
    expect(screen.getByTestId("entity-reference-menu")).toBeTruthy();
    expect(screen.getByText("Incident")).toBeTruthy();
    expect(screen.getByTestId("entity-reference-generic-icon")).toBeTruthy();
    const row = screen.getByRole("option", { name: /#INC-9.*Authentication outage/ });
    expect(row.className).toContain("min-h-11");
    fireEvent.click(row);
    expect(onSelect).toHaveBeenCalledWith(reference);
  });

  it("renders a plugin pull request without a provider-specific composer branch", () => {
    const reference: EntityReference = {
      version: 1,
      ref: "mention:v1:plugin%3Aexample%3Areviews:pull_request:workspace-1:pull-42",
      provider: "plugin:example:reviews",
      kind: "pull_request",
      id: "pull-42",
      key: "PR-42",
      title: "Fix authentication",
      url: "https://reviews.example.test/pull-requests/42",
      scope: "workspace-1",
    };
    const onSelect = vi.fn();
    renderEntityReferenceMenu(
      [
        {
          source: "plugin:example:pull-requests",
          provider: reference.provider,
          kind: reference.kind,
          display_name: "Example reviews",
          kind_label: "Pull request",
          status: "ok",
          results: [reference],
        },
      ],
      onSelect,
    );

    const row = screen.getByRole("option", { name: /#PR-42.*Fix authentication/ });
    expect(screen.getByText("Example reviews")).toBeTruthy();
    expect(screen.getByText("Pull request")).toBeTruthy();
    expect(row.querySelector("svg")?.getAttribute("class")).toContain("h-4");
    expect(row.querySelector("svg")?.getAttribute("class")).toContain("w-4");
    fireEvent.click(row);
    expect(onSelect).toHaveBeenCalledWith(reference);
  });

  it("omits sources that are not searchable in the active workspace", () => {
    const visibleEntityReferenceGroups = (entityReferenceMenus as Record<string, unknown>)
      .visibleEntityReferenceGroups;
    expect(visibleEntityReferenceGroups).toBeTypeOf("function");
    if (typeof visibleEntityReferenceGroups !== "function") return;

    expect(
      (visibleEntityReferenceGroups as (value: EntityReferenceSearchGroup[]) => unknown)(
        unavailableSearchGroups,
      ),
    ).toEqual([unavailableSearchGroups[2]]);
  });

  it("keeps Kandev tasks out of # work item search", () => {
    expect(entityReferenceMenus.visibleEntityReferenceGroups([kandevTaskGroup])).toEqual([]);

    const selectableEntityReferences = (entityReferenceMenus as Record<string, unknown>)
      .selectableEntityReferences;
    expect(selectableEntityReferences).toBeTypeOf("function");
    if (typeof selectableEntityReferences !== "function") return;
    expect(
      (selectableEntityReferences as (value: EntityReferenceSearchGroup[]) => unknown)([
        kandevTaskGroup,
        githubIssueGroup,
      ]),
    ).toEqual(githubIssueGroup.results);
  });
});