// @vitest-environment jsdom
import { flushPromises, mount, type VueWrapper } from "@vue/test-utils";
import { createPinia, setActivePinia } from "pinia";
import { beforeEach, describe, expect, it, vi } from "vitest";

import type { Directory, NoteShare } from "../adapters/repo";
import { useNotesStore, type Note } from "../stores/notes";
import ShareDialog from "./ShareDialog.vue";

// The dialog talks to the server only through repo.shares, so that is all this fakes.
// Every call answers the note's shares as the server would.
const shares = vi.hoisted(() => ({
  directory: vi.fn(),
  list: vi.fn(),
  share: vi.fn(),
  unshare: vi.fn(),
}));
vi.mock("../adapters", () => ({ repo: { shares } }));

const ana = { id: "u1", display_name: "Ana", email: "ana@example.com" };
const ben = { id: "u2", display_name: "Ben", email: "ben@example.com" };
const family = { id: "g1", name: "Family", member_count: 3 };
const DIRECTORY: Directory = { members: [ana, ben], groups: [family] };

const toAna = (permission: "view" | "edit" = "view"): NoteShare => ({
  id: "s1",
  member: ana,
  group: null,
  permission,
  created_at: null,
});
const toFamily: NoteShare = { id: "s2", member: null, group: family, permission: "edit", created_at: null };

async function open(existing: NoteShare[] = [], directory: Directory = DIRECTORY) {
  shares.directory.mockResolvedValue(directory);
  shares.list.mockResolvedValue(existing);
  const pinia = createPinia();
  setActivePinia(pinia);
  const notes = useNotesStore();
  notes.items.push({ id: "n1", shared: existing.length > 0 } as Note);
  const wrapper = mount(ShareDialog, { props: { noteId: "n1" }, global: { plugins: [pinia] } });
  await flushPromises();
  return { wrapper, notes };
}

const picker = (w: VueWrapper<any>) => w.get('select[aria-label="Person or group"]');
const choices = (w: VueWrapper<any>) =>
  picker(w)
    .findAll("option")
    .map((o) => o.attributes("value"))
    .filter(Boolean);

beforeEach(() => vi.resetAllMocks());

describe("the Share dialog", () => {
  it("offers everyone, and says the note is only yours when it isn't shared", async () => {
    const { wrapper } = await open();
    expect(shares.list).toHaveBeenCalledWith("n1");
    expect(choices(wrapper)).toEqual(["u:u1", "u:u2", "g:g1"]);
    expect(wrapper.text()).toContain("Only you.");
  });

  it("shares with a person at the chosen permission, and marks the note shared", async () => {
    const { wrapper, notes } = await open();
    shares.share.mockResolvedValue([toAna("edit")]);
    await picker(wrapper).setValue("u:u1");
    await wrapper.get('select[aria-label="Permission"]').setValue("edit");
    await wrapper.get("form").trigger("submit");
    await flushPromises();

    expect(shares.share).toHaveBeenCalledWith("n1", { user_id: "u1" }, "edit");
    expect(wrapper.text()).toContain("Ana");
    expect(wrapper.text()).not.toContain("Only you.");
    // Someone it's already shared with isn't offered twice.
    expect(choices(wrapper)).toEqual(["u:u2", "g:g1"]);
    expect(notes.items[0].shared).toBe(true);
  });

  it("shares with a group by its id, not as a person", async () => {
    const { wrapper } = await open();
    shares.share.mockResolvedValue([toFamily]);
    await picker(wrapper).setValue("g:g1");
    await wrapper.get("form").trigger("submit");
    await flushPromises();

    expect(shares.share).toHaveBeenCalledWith("n1", { group_id: "g1" }, "view");
    expect(wrapper.text()).toContain("Group · 3 people");
  });

  it("changes a share's permission in place", async () => {
    const { wrapper } = await open([toAna()]);
    shares.share.mockResolvedValue([toAna("edit")]);
    await wrapper.get('select[aria-label="Permission for Ana"]').setValue("edit");
    await flushPromises();

    expect(shares.share).toHaveBeenCalledWith("n1", { user_id: "u1" }, "edit");
  });

  it("stops sharing, and the note is yours alone again", async () => {
    const { wrapper, notes } = await open([toAna()]);
    shares.unshare.mockResolvedValue([]);
    await wrapper.get('button[aria-label="Stop sharing with Ana"]').trigger("click");
    await flushPromises();

    expect(shares.unshare).toHaveBeenCalledWith("n1", "s1");
    expect(wrapper.text()).toContain("Only you.");
    expect(notes.items[0].shared).toBe(false);
  });

  it("says why a share failed and keeps the choice to try again", async () => {
    const { wrapper } = await open();
    shares.share.mockRejectedValue({ error: "Ana can't be reached.", status: 400 });
    await picker(wrapper).setValue("u:u1");
    await wrapper.get("form").trigger("submit");
    await flushPromises();

    expect(wrapper.get('[role="alert"]').text()).toBe("Ana can't be reached.");
    expect((picker(wrapper).element as HTMLSelectElement).value).toBe("u:u1");
  });

  it("offers a retry when it couldn't load who it's shared with", async () => {
    shares.directory.mockRejectedValueOnce(new Error(""));
    const { wrapper } = await open();
    expect(wrapper.text()).toContain("Couldn't load who this is shared with.");

    await wrapper.get("button:not([aria-label])").trigger("click");
    await flushPromises();
    expect(choices(wrapper)).toEqual(["u:u1", "u:u2", "g:g1"]);
  });

  it("says there is no one to share with on a single-person instance", async () => {
    const { wrapper } = await open([], { members: [], groups: [] });
    expect(wrapper.text()).toContain("No one else has an account here yet.");
    expect(wrapper.find("form").exists()).toBe(false);
  });
});