import React, { useState } from "react";
import "@testing-library/jest-dom";
import { fireEvent, render, screen, waitFor, within } from "@testing-library/react";
import { MemoryRouter, useLocation } from "react-router-dom";
import { api } from "./api";
import JobTable, { type JobTableColumns } from "./components/JobTable";
import { ConfirmProvider } from "./confirm";
import { PromptProvider } from "./prompt";
import { ToastProvider } from "./toast";
import { I18nProvider } from "./i18n/I18nProvider";
import { translations } from "./i18n/translations";

jest.mock("./components/EditJobDialog", () => ({ open, onClose }: { open: boolean; onClose: () => void }) => open ? <div role="dialog" aria-label="Edit job"><button onClick={onClose}>Close editor</button></div> : null);

const mockedApi = api as jest.Mocked<typeof api>;
const job = { id: 42, companyId: 1, company: { id: 1, name: "Østlandet" }, jobTitle: "Platform engineer", status: "Custom review", dateApplied: "2026-08-01", daysSince: 2, location: "Tromsø", jobUrl: "https://example.test/listing", isDeleted: false };
const t = translations.en;

function Consumer({ mode }: { mode: "jobs" | "trash" }) {
  const location = useLocation();
  const [pageSize, setPageSize] = useState<15 | 20 | 25>(15);
  const [columns, setColumns] = useState<JobTableColumns>({ status: true, dateApplied: true, daysSince: true, jobUrl: true });
  return <><output aria-label="Current route">{location.pathname}{location.search}</output><JobTable mode={mode} refreshToken={0} pageSize={pageSize} onPageSizeChange={setPageSize} columns={columns} onColumnsChange={setColumns} /></>;
}
function show(mode: "jobs" | "trash" = "jobs", query = "") {
  return render(<MemoryRouter initialEntries={[`/${mode}${query}`]}><I18nProvider><ToastProvider><ConfirmProvider><PromptProvider><Consumer mode={mode} /></PromptProvider></ConfirmProvider></ToastProvider></I18nProvider></MemoryRouter>);
}
const calls = () => mockedApi.get.mock.calls.filter(([url]) => url === "/jobapplications");
const lastParams = () => calls().at(-1)?.[1]?.params as Record<string, unknown>;
beforeEach(() => {
  localStorage.clear();
  jest.clearAllMocks();
  mockedApi.get.mockImplementation((url: string) => Promise.resolve({ data: url === "/companies" ? [job.company] : url === "/jobapplications" ? { items: [job], total: 31, page: 1, pageSize: 15 } : [] } as any));
});

test("row status/edit/delete controls retain selection and do not open the workspace", async () => {
  show();
  const row = await screen.findByRole("row", { name: /open platform engineer/i });
  fireEvent.click(within(row).getByRole("checkbox"));
  fireEvent.click(within(row).getByRole("button", { name: `${t.jobTableEdit}: ${job.jobTitle}` }));
  expect(screen.getByRole("dialog", { name: "Edit job" })).toBeVisible();
  fireEvent.click(screen.getByText("Close editor"));
  expect(within(row).getByRole("checkbox")).toBeChecked();
  fireEvent.click(within(row).getByRole("button", { name: `${t.jobTableSoftDelete}: ${job.jobTitle}` }));
  fireEvent.click(within(await screen.findByRole("dialog")).getByRole("button", { name: /cancel/i }));
  expect(mockedApi.delete).not.toHaveBeenCalled();
  fireEvent.click(await within(row).findByRole("button", { name: `${t.jobTableQuickStatus}: ${job.jobTitle}` }));
  fireEvent.click(await screen.findByRole("menuitem", { name: /Interview/ }));
  await waitFor(() => expect(mockedApi.patch).toHaveBeenCalledWith("/jobapplications/42/status", { status: "Interview" }));
  expect(screen.getByLabelText("Current route")).toHaveTextContent(/^\/jobs$/);
});

test("table sort, page-size and optional columns keep their existing independent contracts", async () => {
  show("jobs", "?q=platform&location=Troms%C3%B8");
  await screen.findByRole("row", { name: /open platform engineer/i });
  fireEvent.click(screen.getByRole("button", { name: t.jobTableCompany }));
  await waitFor(() => expect(lastParams()).toMatchObject({ q: "platform", location: "Tromsø", sortBy: "company", sortDir: "asc" }));
  fireEvent.click(screen.getByRole("button", { name: "Go to next page" }));
  await waitFor(() => expect(lastParams().page).toBe(2));
  fireEvent.mouseDown(screen.getByRole("combobox", { name: /rows per page/i }));
  fireEvent.click(await screen.findByRole("option", { name: "20" }));
  await waitFor(() => expect(lastParams()).toMatchObject({ page: 1, pageSize: 20 }));
  fireEvent.click(screen.getByRole("button", { name: t.jobTableColumns }));
  fireEvent.click(await screen.findByRole("menuitem", { name: t.settingsColumnJobUrl }));
  expect(screen.queryByRole("link", { name: t.jobTableLink })).not.toBeInTheDocument();
});

test("Trash select-all and bulk restore use the original IDs without workspace navigation", async () => {
  show("trash");
  await screen.findByText(job.jobTitle);
  fireEvent.click(screen.getByRole("checkbox", { name: t.jobTableSelectAll }));
  fireEvent.click(screen.getByRole("button", { name: t.jobTableRestoreSelected }));
  await waitFor(() => expect(mockedApi.post).toHaveBeenCalledWith("/jobapplications/42/restore"));
  expect(screen.getByLabelText("Current route")).toHaveTextContent(/^\/trash$/);
});

async function compact() {
  fireEvent.mouseDown(screen.getByRole("combobox", { name: t.listDensity }));
  fireEvent.click(await screen.findByRole("option", { name: t.densityCompact }));
}

test("density preserves selected rows, query, page, custom status, columns and listing link without refetch", async () => {
  show("jobs", "?q=platform&page=2&sortBy=company&sortDir=asc");
  const row = await screen.findByRole("row", { name: /open platform engineer/i });
  const columns = within(row).getAllByRole("cell").length;
  fireEvent.click(within(row).getByRole("checkbox"));
  const before = calls().length;
  expect(screen.getByRole("combobox", { name: t.listDensity })).toHaveTextContent(t.densityComfortable);
  await compact();
  expect(within(row).getByRole("checkbox")).toBeChecked();
  expect(within(row).getAllByRole("cell")).toHaveLength(columns);
  expect(within(row).getByText("Custom review")).toBeVisible();
  expect(within(row).getByRole("link", { name: t.jobTableLink })).toHaveAttribute("href", job.jobUrl);
  expect(screen.getByText("16–30 of 31")).toBeVisible();
  expect(screen.getByLabelText("Current route")).toHaveTextContent("/jobs?q=platform&page=2&sortBy=company&sortDir=asc");
  expect(calls()).toHaveLength(before);
  fireEvent.click(screen.getByRole("button", { name: "Offer" }));
  await waitFor(() => expect(mockedApi.patch).toHaveBeenCalledWith("/jobapplications/42/status", { status: "Offer" }));
});

test("density is local and resets on unmount without writing settings or a saved view", async () => {
  const view = show();
  await screen.findByText(job.jobTitle);
  const stored = { ...localStorage };
  await compact();
  expect({ ...localStorage }).toEqual(stored);
  expect(mockedApi.put).not.toHaveBeenCalled();
  view.unmount();
  show();
  await screen.findByText(job.jobTitle);
  expect(screen.getByRole("combobox", { name: t.listDensity })).toHaveTextContent(t.densityComfortable);
});

test("density survives an empty result and a failed refresh with the existing retry action", async () => {
  show();
  await screen.findByText(job.jobTitle);
  await compact();
  mockedApi.get.mockImplementation((url: string) => url === "/jobapplications" ? Promise.reject({ message: "Synthetic unavailable", response: { status: 503 } }) : Promise.resolve({ data: [] } as any));
  fireEvent.click(screen.getByRole("button", { name: t.tableNextPage }));
  expect(await screen.findByRole("alert")).toHaveTextContent("Synthetic unavailable");
  expect(screen.getByRole("combobox", { name: t.listDensity })).toHaveTextContent(t.densityCompact);
  mockedApi.get.mockResolvedValue({ data: { items: [], total: 0, page: 1, pageSize: 15 } } as any);
  fireEvent.click(screen.getByRole("button", { name: /retry/i }));
  await waitFor(() => expect(screen.queryByRole("alert")).not.toBeInTheDocument());
  expect(screen.getByRole("combobox", { name: t.listDensity })).toHaveTextContent(t.densityCompact);
  expect(screen.queryByText(job.jobTitle)).not.toBeInTheDocument();
});