import { type ChildProcess, execFileSync, spawn } from "node:child_process";
import { mkdtemp, rm } from "node:fs/promises";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { expect, type Page, test } from "@playwright/test";
import {
  ADMIN_PASSWORD,
  ADMIN_USER,
  getFreePort,
  waitForServer,
} from "./fixtures";

let proc: ChildProcess;
let rootDir: string;
let base: string;

const BIN = "./target/debug/silverbullet";
const CWD = join(import.meta.dirname, "..");

test.beforeAll(async () => {
  rootDir = await mkdtemp(join(tmpdir(), "sb-admin-spaces-e2e-"));

  // Same non-interactive provisioning as e2e/multi-space-admin.test.ts: the
  // `setup` subcommand writes users.json (the admin account) + an empty
  // spaces.json, which is what boots the server into multi-space mode.
  execFileSync(
    BIN,
    ["setup", rootDir, "--admin", `${ADMIN_USER}:${ADMIN_PASSWORD}`],
    {
      cwd: CWD,
      stdio: "pipe",
    },
  );

  const port = await getFreePort();
  proc = spawn(BIN, [rootDir, "-p", String(port), "-L", "127.0.0.1"], {
    cwd: CWD,
    stdio: ["ignore", "pipe", "pipe"],
    env: {
      ...process.env,
      SB_RUNTIME_API: "0",
      SB_DISABLE_SERVICE_WORKER: "1",
    },
  });
  base = `http://127.0.0.1:${port}`;
  await waitForServer(`${base}/.spaces`);
});

test.afterAll(async () => {
  proc?.kill();
  await rm(rootDir, { recursive: true, force: true });
});

// Log in through the admin UI before each test, so the browser context's
// cookie jar (shared with `page.request` below) carries the admin session
// for both UI navigation and direct API calls.
test.beforeEach(async ({ page }) => {
  await page.goto(`${base}/.spaces`);
  await page.getByLabel("Username").fill(ADMIN_USER);
  await page.getByLabel("Password", { exact: true }).fill(ADMIN_PASSWORD);
  await page.getByRole("button", { name: "Log in" }).click();
  // The list screens have no heading — the active tab names them instead.
  await expect(page.locator(".sb-tab.sb-active")).toHaveText("Spaces");
});

/** Create a space directly via the admin API (full-config POST) and return its id. */
async function createSpaceViaApi(
  page: Page,
  config: Record<string, unknown>,
): Promise<string> {
  const resp = await page.request.post(`${base}/.spaces/api/admin/spaces`, {
    data: config,
  });
  expect(resp.ok(), await resp.text()).toBeTruthy();
  const json = await resp.json();
  return json.id;
}

/** Fetch a single space's config via the admin API. */
async function fetchSpaceViaApi(page: Page, id: string): Promise<any> {
  const resp = await page.request.get(`${base}/.spaces/api/admin/spaces/${id}`);
  expect(resp.ok(), await resp.text()).toBeTruthy();
  return resp.json();
}

/**
 * Call an admin API endpoint (e.g. `api/admin/users`) using the given page's
 * session cookie, and return the parsed JSON body.
 */
async function admin(
  page: Page,
  method: string,
  path: string,
  body?: unknown,
): Promise<any> {
  const resp = await page.request.fetch(`${base}/.spaces/${path}`, {
    method,
    data: body,
  });
  expect(resp.ok(), await resp.text()).toBeTruthy();
  return resp.json();
}

test("editing a space preserves fields the form does not manage", async ({
  page,
}) => {
  // Create a space via the API with a non-default themeColor and
  // description, which the edit form has no inputs for.
  const id = await createSpaceViaApi(page, {
    name: "Work",
    binding: { prefix: "/work" },
    themeColor: "#ff0000",
    description: "Custom description",
  });

  await page.goto(`${base}/.spaces`);
  // The name opens the space itself; the admin-only Edit control at the end
  // of the row is the durable edit route.
  await page.getByRole("link", { name: "Edit" }).click();
  await expect(page).toHaveURL(`${base}/.spaces/${encodeURIComponent(id)}`);
  await page.getByLabel("Name").fill("Renamed");
  await page.getByRole("button", { name: "Save" }).click();

  // Saving returns to the space list.
  await expect(page).toHaveURL(`${base}/.spaces/`);
  // The canonical edit URL still resolves directly, with the saved value.
  await page.goto(`${base}/.spaces/${encodeURIComponent(id)}`);
  await expect(page.getByLabel("Name")).toHaveValue("Renamed");

  const after = await fetchSpaceViaApi(page, id);
  expect(after.name).toBe("Renamed");
  expect(after.themeColor).toBe("#ff0000");
  expect(after.description).toBe("Custom description");
});

test("saving an existing space returns to the list showing the change", async ({
  page,
}) => {
  const id = await createSpaceViaApi(page, {
    name: "Feedback",
    binding: { prefix: "/feedback" },
  });

  await page.goto(`${base}/.spaces/${encodeURIComponent(id)}`);
  await page.getByLabel("Name").fill("Feedback Renamed");
  await page.getByRole("button", { name: "Save" }).click();

  // Landing back on the list is the confirmation: the admin sees the space
  // they just edited carrying its new name, rather than an unchanged-looking
  // form they have to take on trust.
  await expect(page).toHaveURL(`${base}/.spaces/`);
  await expect(
    page.getByRole("link", { name: "Feedback Renamed" }),
  ).toBeVisible();
});

test("the shell allow list is editable, and only shown when shell is enabled", async ({
  page,
}) => {
  const id = await createSpaceViaApi(page, {
    name: "Shell",
    binding: { prefix: "/shell" },
    shell: { enabled: true, whitelist: ["git"] },
  });

  await page.goto(`${base}/.spaces/${encodeURIComponent(id)}`);
  await page.locator("summary", { hasText: "Advanced" }).click();

  const allowed = page.getByLabel("Allowed commands");
  await expect(allowed).toHaveValue("git");

  // The field belongs to the toggle above it: with shell commands off there
  // is nothing for an allow list to restrict.
  await page.getByLabel("Enable shell commands").uncheck();
  await expect(allowed).toBeHidden();
  await page.getByLabel("Enable shell commands").check();
  await expect(allowed).toHaveValue("git");

  await allowed.fill("git pandoc");
  await page.getByRole("button", { name: "Save" }).click();
  await expect(page).toHaveURL(`${base}/.spaces/`);

  const after = await fetchSpaceViaApi(page, id);
  expect(after.shell).toEqual({ enabled: true, whitelist: ["git", "pandoc"] });
});

test("switching a host-bound space to prefix without a value is rejected", async ({
  page,
}) => {
  // A host-bound space: editing it never seeds the (unused) `prefix` field.
  // Switching the Binding dropdown to "URL prefix" must not let an empty
  // prefix through — that would silently rebind the space to the server root.
  const id = await createSpaceViaApi(page, {
    name: "Hostname Space",
    binding: { host: "hostname-space.example.com" },
  });

  await page.goto(`${base}/.spaces/${encodeURIComponent(id)}`);

  // The hostname affix describes the public URL, not this admin session's:
  // always https (TLS is required), whatever port the server this page came
  // from happens to be listening on. Nothing trails the hostname.
  await expect(page.locator(".sb-url-affix")).toHaveText(["https://"]);

  await page.getByLabel("Binding").selectOption("prefix");
  await page.getByRole("button", { name: "Save" }).click();

  await expect(page.locator(".sb-alert-error")).toContainText(
    "prefix is required",
  );
  // Saving must have been aborted client-side: still on the edit URL.
  await expect(page).toHaveURL(`${base}/.spaces/${encodeURIComponent(id)}`);

  // The important assertion: the stored binding is unchanged, i.e. the PATCH
  // never went through. An error message next to a binding that quietly
  // changed anyway would be worse than no guard at all.
  const after = await fetchSpaceViaApi(page, id);
  expect(after.binding).toEqual({ host: "hostname-space.example.com" });
});

test("user create and detail screens have refreshable URLs", async ({
  page,
}) => {
  await page.getByRole("link", { name: "Users" }).click();
  // The tab is now the screen's label, so it must be marked as the current
  // page rather than merely highlighted.
  await expect(page.locator("[aria-current=page]")).toHaveText("Users");
  await expect(page).toHaveURL(`${base}/.spaces/users`);
  await page.getByRole("link", { name: "Create user" }).click();
  await expect(page).toHaveURL(`${base}/.spaces/users/new`);

  await page.getByLabel("Username").fill("route-user");
  await page.getByLabel("Password", { exact: true }).fill("password123");
  await page.getByRole("button", { name: "Create user" }).click();
  await expect(page).toHaveURL(`${base}/.spaces/users/route-user`);
  await expect(page.getByRole("heading", { name: "route-user" })).toBeVisible();

  await page.reload();
  await expect(page.getByRole("heading", { name: "route-user" })).toBeVisible();

  // A direct visit without a session goes through login and returns to the
  // requested detail screen rather than dropping back at the list.
  await page.context().clearCookies();
  await page.goto(`${base}/.spaces/users/route-user`);
  await expect(page).toHaveURL(/\/\.spaces\/login\?next=/);
  await page.getByLabel("Username").fill(ADMIN_USER);
  await page.getByLabel("Password", { exact: true }).fill(ADMIN_PASSWORD);
  await page.getByRole("button", { name: "Log in" }).click();
  await expect(page).toHaveURL(`${base}/.spaces/users/route-user`);
});

test("the wordmark's app icon loads, including on a nested URL", async ({
  page,
}) => {
  // A broken <img> still lays out, so assert the bytes actually arrived. The
  // nested URL is the real risk: the asset path is relative, and only the
  // page's <base href="/.spaces/"> stops it resolving against /.spaces/users/.
  await page.goto(`${base}/.spaces/users`);
  const icon = page.locator(".sb-wordmark img");
  await expect(icon).toBeVisible();
  expect(
    await icon.evaluate((img: HTMLImageElement) => img.naturalWidth > 0),
  ).toBe(true);
});

test("a non-admin sees only their spaces and no admin affordances", async ({
  page,
}) => {
  // The file's beforeEach already established an admin session on `page`; use
  // it to create a member user and a space they belong to via the admin API.
  await admin(page, "POST", "api/admin/users", {
    username: "member",
    password: "memberpw123",
  });
  await admin(page, "POST", "api/admin/spaces", {
    name: "Members Only",
    folder: join(rootDir, "members-only"),
    binding: { prefix: "/members" },
    members: { member: {} },
    seedIndex: true,
  });

  // Drop the admin session and log in as the member instead.
  await page.context().clearCookies();
  await page.goto(`${base}/.spaces/login`);
  await page.fill("#username", "member");
  await page.fill("#password", "memberpw123");
  await page.click("button[type=submit]");

  await expect(page.locator(".sb-space-list li")).toHaveCount(1);
  await expect(page.locator("text=Members Only")).toBeVisible();
  // No Users tab, no create button.
  await expect(page.locator(".sb-tabs")).toHaveCount(0);
  await expect(page.locator("text=Create space")).toHaveCount(0);
  // With no tab bar to name the screen, the heading is what labels it — it is
  // dropped only where a tab already says "Spaces".
  await expect(page.getByRole("heading", { name: "Spaces" })).toBeVisible();

  // Typing an admin URL yields the not-found screen, not the user list.
  await page.goto(`${base}/.spaces/users`);
  await expect(page.locator("h1")).toHaveText("Not found");

  // And the API refuses regardless of what the UI renders. The caller is
  // authenticated (just not an admin), so this is 403, not 401.
  const resp = await page.request.get(`${base}/.spaces/api/admin/users`);
  expect(resp.status()).toBe(403);
});