// @vitest-environment jsdom

import { beforeEach, describe, expect, test, vi } from "vitest";

import {
  disposeFavoriteRowPickers,
  syncFavoriteRowPickers
} from "../src/content/market/favorite-row-picker";
import type { FavoriteCreatorInput, FavoriteFolder } from "../src/content/market/favorites-store";

const firstFolder = createFolder("folder-1", "合作");
const secondFolder = createFolder("folder-2", "待联系");

function createFolder(id: string, name: string): FavoriteFolder {
  return {
    createdAt: "2026-07-17T00:00:00.000Z",
    id,
    name,
    updatedAt: "2026-07-17T00:00:00.000Z"
  };
}

function createCreator(authorId = "author-1"): FavoriteCreatorInput {
  return {
    authorId,
    authorName: "Alice",
    coreUserId: "core-1"
  };
}

function createActionCell(label = "下单"): HTMLElement {
  const cell = document.createElement("div");
  cell.dataset.testid = "native-action-cell";
  const nativeButton = document.createElement("button");
  nativeButton.dataset.nativeAction = "order";
  nativeButton.textContent = label;
  cell.appendChild(nativeButton);
  document.body.appendChild(cell);
  return cell;
}

function readFavoriteButton(actionCell: HTMLElement): HTMLButtonElement {
  const button = actionCell.querySelector(
    ':scope > button[data-sces-favorite-row-action="button"]'
  );
  if (!(button instanceof HTMLButtonElement)) {
    throw new Error("Expected favorite action button");
  }
  return button;
}

function readPopover(): HTMLElement | null {
  return document.querySelector('[data-sces-favorite-row-picker="root"]');
}

function createDeferred(): {
  promise: Promise<void>;
  resolve: () => void;
} {
  let resolve!: () => void;
  const promise = new Promise<void>((nextResolve) => {
    resolve = nextResolve;
  });
  return { promise, resolve };
}

function createRect(options: {
  bottom?: number;
  height?: number;
  left?: number;
  top?: number;
  width?: number;
}): DOMRect {
  const bottom = options.bottom ?? (options.top ?? 0) + (options.height ?? 0);
  const height = options.height ?? bottom - (options.top ?? 0);
  const left = options.left ?? 0;
  const top = options.top ?? bottom - height;
  const width = options.width ?? 0;
  return {
    bottom,
    height,
    left,
    right: left + width,
    toJSON() {
      return {};
    },
    top,
    width,
    x: left,
    y: top
  } as DOMRect;
}

function sync(options: {
  actionCell?: HTMLElement;
  authorId?: string;
  folders?: FavoriteFolder[];
  folderIds?: string[];
  onCreateFolder?: () => Promise<FavoriteFolder | null>;
  onSetCreatorFolderIds?: (
    creator: FavoriteCreatorInput,
    folderIds: string[]
  ) => Promise<void>;
  rows?: Array<{
    actionCell?: HTMLElement;
    authorId: string;
    authorName: string;
    coreUserId?: string;
  }>;
} = {}): void {
  const creator = createCreator(options.authorId);
  syncFavoriteRowPickers({
    document,
    folderIdsByAuthorId: new Map([
      [creator.authorId, new Set(options.folderIds ?? [])]
    ]),
    folders: options.folders ?? [firstFolder, secondFolder],
    onCreateFolder: options.onCreateFolder ?? (async () => null),
    onSetCreatorFolderIds: options.onSetCreatorFolderIds ?? (async () => {}),
    rows:
      options.rows ??
      (options.actionCell
        ? [{ ...creator, actionCell: options.actionCell }]
        : [])
  });
}

async function flushAsyncEvents(): Promise<void> {
  await Promise.resolve();
  await Promise.resolve();
}

describe("favorite-row-picker", () => {
  beforeEach(() => {
    disposeFavoriteRowPickers(document);
    document.body.innerHTML = "";
  });

  test("prepends one picker control without replacing the native action", () => {
    const actionCell = createActionCell();

    sync({ actionCell });

    const button = readFavoriteButton(actionCell);
    expect(actionCell.firstElementChild).toBe(button);
    expect(actionCell.querySelector('[data-native-action="order"]')?.textContent).toBe(
      "下单"
    );
    expect(button.type).toBe("button");
    expect(button.title).toBe("加入收藏夹");
    expect(button.getAttribute("aria-label")).toBe("加入收藏夹");
    expect(button.dataset.scesFavoriteCount).toBe("0");
    expect(button.dataset.scesFavoriteIcon).toBe("bookmark-outline");
  });

  test("renders saved count and title from existing memberships", () => {
    const actionCell = createActionCell();

    sync({ actionCell, folderIds: [firstFolder.id, secondFolder.id] });

    const button = readFavoriteButton(actionCell);
    expect(button.title).toBe("已收藏至 2 个收藏夹");
    expect(button.getAttribute("aria-label")).toBe("已收藏至 2 个收藏夹");
    expect(button.dataset.scesFavoriteCount).toBe("2");
    expect(button.dataset.scesFavoriteIcon).toBe("bookmark-filled");
  });

  test("disables a row with no author id and does not open a picker", () => {
    const actionCell = createActionCell();

    sync({ actionCell, authorId: "  " });

    const button = readFavoriteButton(actionCell);
    expect(button.disabled).toBe(true);
    expect(button.title).toContain("达人 ID");
    button.click();
    expect(readPopover()).toBeNull();
  });

  test("keeps one document popover when different row buttons are clicked", () => {
    const firstCell = createActionCell("下单 A");
    const secondCell = createActionCell("下单 B");
    const firstCreator = createCreator("author-1");
    const secondCreator = createCreator("author-2");

    sync({
      rows: [
        { ...firstCreator, actionCell: firstCell },
        { ...secondCreator, actionCell: secondCell }
      ]
    });

    expect(readFavoriteButton(firstCell).getAttribute("aria-label")).toBe(
      "加入收藏夹"
    );
    expect(readFavoriteButton(secondCell).getAttribute("aria-label")).toBe(
      "加入收藏夹"
    );

    readFavoriteButton(firstCell).click();
    expect(readPopover()).not.toBeNull();
    readFavoriteButton(secondCell).click();
    expect(document.querySelectorAll('[data-sces-favorite-row-picker="root"]')).toHaveLength(1);
    expect(readPopover()?.textContent).toContain("合作");
  });

  test("shows existing folder membership in the picker", () => {
    const actionCell = createActionCell();

    sync({ actionCell, folderIds: [firstFolder.id] });
    readFavoriteButton(actionCell).click();

    expect(
      (
        document.querySelector(
          `input[data-sces-favorite-folder-id="${firstFolder.id}"]`
        ) as HTMLInputElement
      ).checked
    ).toBe(true);
    expect(
      (
        document.querySelector(
          `input[data-sces-favorite-folder-id="${secondFolder.id}"]`
        ) as HTMLInputElement
      ).checked
    ).toBe(false);
  });

  test("saves the complete checked folder selection for the matching creator", async () => {
    const actionCell = createActionCell();
    const onSetCreatorFolderIds = vi.fn(async () => {});

    sync({
      actionCell,
      folderIds: [firstFolder.id],
      onSetCreatorFolderIds
    });
    readFavoriteButton(actionCell).click();
    const folderCheckbox = document.querySelector(
      `input[data-sces-favorite-folder-id="${secondFolder.id}"]`
    ) as HTMLInputElement;
    folderCheckbox.checked = true;
    folderCheckbox.dispatchEvent(new Event("change", { bubbles: true }));
    await flushAsyncEvents();

    expect(onSetCreatorFolderIds).toHaveBeenCalledWith(createCreator(), [
      firstFolder.id,
      secondFolder.id
    ]);
    expect(readFavoriteButton(actionCell).dataset.scesFavoriteCount).toBe("2");
  });

  test("retains a confirmed save through a resync while it is pending", async () => {
    const actionCell = createActionCell();
    const deferredSave = createDeferred();
    const onSetCreatorFolderIds = vi.fn(() => deferredSave.promise);

    sync({ actionCell, onSetCreatorFolderIds });
    readFavoriteButton(actionCell).click();
    const firstCheckbox = document.querySelector(
      `input[data-sces-favorite-folder-id="${firstFolder.id}"]`
    ) as HTMLInputElement;
    firstCheckbox.checked = true;
    firstCheckbox.dispatchEvent(new Event("change", { bubbles: true }));

    sync({ actionCell, onSetCreatorFolderIds });
    expect(readFavoriteButton(actionCell).disabled).toBe(true);
    expect(
      (
        document.querySelector(
          `input[data-sces-favorite-folder-id="${firstFolder.id}"]`
        ) as HTMLInputElement
      ).disabled
    ).toBe(true);

    deferredSave.resolve();
    await flushAsyncEvents();

    expect(readFavoriteButton(actionCell).disabled).toBe(false);
    expect(readFavoriteButton(actionCell).dataset.scesFavoriteCount).toBe("1");
    expect(
      (
        document.querySelector(
          `input[data-sces-favorite-folder-id="${firstFolder.id}"]`
        ) as HTMLInputElement
      ).checked
    ).toBe(true);
    expect(
      (
        document.querySelector(
          `input[data-sces-favorite-folder-id="${firstFolder.id}"]`
        ) as HTMLInputElement
      ).disabled
    ).toBe(false);
  });

  test("adds a newly created folder to the creator selection", async () => {
    const actionCell = createActionCell();
    const createdFolder = createFolder("folder-3", "重点");
    const onCreateFolder = vi.fn(async () => createdFolder);
    const onSetCreatorFolderIds = vi.fn(async () => {});

    sync({ actionCell, onCreateFolder, onSetCreatorFolderIds });
    readFavoriteButton(actionCell).click();
    const createButton = document.querySelector(
      '[data-sces-favorite-row-picker="create-folder"]'
    ) as HTMLButtonElement;
    createButton.click();
    await flushAsyncEvents();

    expect(onCreateFolder).toHaveBeenCalledTimes(1);
    expect(onSetCreatorFolderIds).toHaveBeenCalledWith(createCreator(), [createdFolder.id]);
    expect(
      (
        document.querySelector(
          `input[data-sces-favorite-folder-id="${createdFolder.id}"]`
        ) as HTMLInputElement
      ).checked
    ).toBe(true);
    expect(readFavoriteButton(actionCell).dataset.scesFavoriteCount).toBe("1");
  });

  test("keeps the visible selection when saving a checkbox change fails", async () => {
    const actionCell = createActionCell();
    const onSetCreatorFolderIds = vi.fn(async () => {
      throw new Error("save failed");
    });

    sync({ actionCell, folderIds: [firstFolder.id], onSetCreatorFolderIds });
    readFavoriteButton(actionCell).click();
    const firstCheckbox = document.querySelector(
      `input[data-sces-favorite-folder-id="${firstFolder.id}"]`
    ) as HTMLInputElement;
    firstCheckbox.checked = false;
    firstCheckbox.dispatchEvent(new Event("change", { bubbles: true }));
    await flushAsyncEvents();

    expect(onSetCreatorFolderIds).toHaveBeenCalledWith(createCreator(), []);
    expect(
      (
        document.querySelector(
          `input[data-sces-favorite-folder-id="${firstFolder.id}"]`
        ) as HTMLInputElement
      ).checked
    ).toBe(true);
    expect(readFavoriteButton(actionCell).dataset.scesFavoriteCount).toBe("1");
  });

  test("closes the popover on outside pointer-down and Escape", () => {
    const actionCell = createActionCell();
    sync({ actionCell });

    readFavoriteButton(actionCell).click();
    document.body.dispatchEvent(new Event("pointerdown", { bubbles: true }));
    expect(readPopover()).toBeNull();

    readFavoriteButton(actionCell).click();
    document.dispatchEvent(new KeyboardEvent("keydown", { key: "Escape" }));
    expect(readPopover()).toBeNull();
  });

  test("disposes an open picker and clears its detached action handler", () => {
    const actionCell = createActionCell();
    const onSetCreatorFolderIds = vi.fn(async () => {});

    sync({ actionCell, onSetCreatorFolderIds });
    const button = readFavoriteButton(actionCell);
    button.click();
    expect(readPopover()).not.toBeNull();

    disposeFavoriteRowPickers(document);
    disposeFavoriteRowPickers(document);

    expect(readPopover()).toBeNull();
    expect(button.onclick).toBeNull();
    document.dispatchEvent(new KeyboardEvent("keydown", { key: "Escape" }));
    document.body.dispatchEvent(new Event("pointerdown", { bubbles: true }));
    button.click();
    expect(onSetCreatorFolderIds).not.toHaveBeenCalled();
  });

  test("clamps a bottom-right picker within the viewport", () => {
    const actionCell = createActionCell();
    const originalWidth = Object.getOwnPropertyDescriptor(
      document.documentElement,
      "clientWidth"
    );
    const originalHeight = Object.getOwnPropertyDescriptor(
      document.documentElement,
      "clientHeight"
    );
    Object.defineProperty(document.documentElement, "clientWidth", {
      configurable: true,
      value: 300
    });
    Object.defineProperty(document.documentElement, "clientHeight", {
      configurable: true,
      value: 200
    });
    const rectSpy = vi
      .spyOn(HTMLElement.prototype, "getBoundingClientRect")
      .mockImplementation(function mockPickerRect(this: HTMLElement): DOMRect {
        if (this.dataset.scesFavoriteRowAction === "button") {
          return createRect({ bottom: 190, height: 20, left: 280, top: 170, width: 20 });
        }
        if (this.dataset.scesFavoriteRowPicker === "root") {
          return createRect({ height: 60, width: 120 });
        }
        return createRect({});
      });

    try {
      sync({ actionCell });
      readFavoriteButton(actionCell).click();

      const root = readPopover() as HTMLElement;
      expect(Number.parseFloat(root.style.left)).toBeGreaterThanOrEqual(8);
      expect(Number.parseFloat(root.style.left)).toBeLessThanOrEqual(172);
      expect(Number.parseFloat(root.style.top)).toBeGreaterThanOrEqual(8);
      expect(Number.parseFloat(root.style.top)).toBeLessThanOrEqual(132);
      expect(root.style.top).toBe("102px");
    } finally {
      rectSpy.mockRestore();
      if (originalWidth) {
        Object.defineProperty(document.documentElement, "clientWidth", originalWidth);
      } else {
        delete (document.documentElement as { clientWidth?: number }).clientWidth;
      }
      if (originalHeight) {
        Object.defineProperty(document.documentElement, "clientHeight", originalHeight);
      } else {
        delete (document.documentElement as { clientHeight?: number }).clientHeight;
      }
    }
  });

  test("sets trigger dialog state, focuses the picker, and restores focus on Escape", () => {
    const actionCell = createActionCell();
    sync({ actionCell });

    const button = readFavoriteButton(actionCell);
    expect(button.getAttribute("aria-haspopup")).toBe("dialog");
    expect(button.getAttribute("aria-expanded")).toBe("false");
    const pickerId = button.getAttribute("aria-controls");
    expect(pickerId).not.toBeNull();

    button.focus();
    button.click();
    const root = readPopover() as HTMLElement;
    expect(root.id).toBe(pickerId);
    expect(root.getAttribute("role")).toBe("dialog");
    expect(root.getAttribute("aria-label")).toBe("选择收藏夹");
    expect(button.getAttribute("aria-expanded")).toBe("true");
    expect(document.activeElement).toBe(
      document.querySelector(
        `input[data-sces-favorite-folder-id="${firstFolder.id}"]`
      )
    );

    document.dispatchEvent(new KeyboardEvent("keydown", { key: "Escape" }));
    expect(readPopover()).toBeNull();
    expect(button.getAttribute("aria-expanded")).toBe("false");
    expect(document.activeElement).toBe(button);
  });

  test("resyncs one control with fresh callbacks and closes an obsolete popover", async () => {
    const actionCell = createActionCell();
    const staleCallback = vi.fn(async () => {});
    const currentCallback = vi.fn(async () => {});

    sync({ actionCell, onSetCreatorFolderIds: staleCallback });
    readFavoriteButton(actionCell).click();
    expect(readPopover()).not.toBeNull();

    sync({ actionCell, onSetCreatorFolderIds: currentCallback });
    expect(
      actionCell.querySelectorAll('[data-sces-favorite-row-action="button"]')
    ).toHaveLength(1);
    const folderCheckbox = document.querySelector(
      `input[data-sces-favorite-folder-id="${firstFolder.id}"]`
    ) as HTMLInputElement;
    folderCheckbox.checked = true;
    folderCheckbox.dispatchEvent(new Event("change", { bubbles: true }));
    await flushAsyncEvents();
    expect(staleCallback).not.toHaveBeenCalled();
    expect(currentCallback).toHaveBeenCalledWith(createCreator(), [firstFolder.id]);

    sync({ rows: [] });
    expect(readPopover()).toBeNull();
  });
});