import { expect, test } from "@playwright/test";

import { installMockBridge } from "../helpers/bridge";
import { openSettings } from "../helpers/settings";

const ENGINEERING_CHANNEL_ID = "1c7e1c02-87bb-5e88-b2da-5a7a9432d0c9";
const WATERCOLOR_CHANNEL_ID = "a27e1ee9-76a6-5bdf-a5d5-1d85610dad11";
const FORUM_POST_ID = "mock-forum-release-thread";
const FORUM_REPLY_ID = "mock-forum-release-reply";

test.beforeEach(async ({ page }) => {
  await installMockBridge(page);
});

async function navigateToWorkflows(page: import("@playwright/test").Page) {
  await page.goto("/");
  await page.getByTestId("open-workflows-view").click();
  await expect(page).toHaveURL(/#\/workflows$/);
  await expect(page.getByTestId("workflows-view")).toBeVisible();
}

async function createWorkflow(
  page: import("@playwright/test").Page,
  name: string,
) {
  await page.getByRole("button", { name: "Create Workflow" }).click();
  const dialog = page.getByRole("dialog");
  await expect(dialog).toBeVisible();
  await dialog.getByLabel("Workflow name").fill(name);
  await dialog.getByRole("button", { name: "Add step" }).click();
  await dialog.getByRole("button", { name: "Create" }).click();
  await expect(dialog).not.toBeVisible();
}

test("global back and forward move across channel routes", async ({ page }) => {
  await page.goto("/");

  await page.getByTestId("channel-general").click();
  await expect(page.getByTestId("chat-title")).toHaveText("general");

  await page.getByTestId("channel-random").click();
  await expect(page.getByTestId("chat-title")).toHaveText("random");

  await page.getByTestId("global-back").click();
  await expect(page.getByTestId("chat-title")).toHaveText("general");

  await page.getByTestId("global-forward").click();
  await expect(page.getByTestId("chat-title")).toHaveText("random");
});

test("back/forward keyboard chords work while the composer has focus", async ({
  page,
}) => {
  const backChord = process.platform === "darwin" ? "Meta+[" : "Alt+ArrowLeft";
  const forwardChord =
    process.platform === "darwin" ? "Meta+]" : "Alt+ArrowRight";

  await page.goto("/");

  await page.getByTestId("channel-general").click();
  await expect(page.getByTestId("chat-title")).toHaveText("general");

  await page.getByTestId("channel-random").click();
  await expect(page.getByTestId("chat-title")).toHaveText("random");

  // The composer autofocuses on channel switch; make the regression
  // condition explicit by clicking into it. The chords must still fire
  // from inside the contenteditable (#3775).
  await page.getByTestId("message-input").click();
  await expect(page.getByTestId("message-input")).toBeFocused();

  await page.keyboard.press(backChord);
  await expect(page.getByTestId("chat-title")).toHaveText("general");

  await page.keyboard.press(forwardChord);
  await expect(page.getByTestId("chat-title")).toHaveText("random");

  // preventDefault kept the chord out of the editor — no stray characters.
  await expect(page.getByTestId("message-input")).toHaveText("");
});

// FIXME: the forum post "Back to posts" header renders under the fixed top
// chrome drag region, which intercepts the click. Pre-existing breakage —
// this spec file was never registered in playwright.config.ts until now.
// The header-chrome rework (PR #941) covers this overlap class.
test.fixme("direct forum thread links close back to the forum route", async ({
  page,
}) => {
  await page.goto(
    `/#/channels/${WATERCOLOR_CHANNEL_ID}/posts/${FORUM_POST_ID}`,
  );

  await expect(page.getByTestId("chat-title")).toHaveText("watercooler");
  await expect(
    page.getByRole("button", { name: "Back to posts" }),
  ).toBeVisible();

  await page.getByRole("button", { name: "Back to posts" }).click();

  await expect(page).toHaveURL(
    /#\/channels\/a27e1ee9-76a6-5bdf-a5d5-1d85610dad11$/,
  );
  await expect(
    page.getByText("Release checklist: async feedback thread."),
  ).toBeVisible();
});

test("direct workflow detail links close back to workflows", async ({
  page,
}) => {
  const workflowName = `workflow_nav_${Date.now()}`;

  await navigateToWorkflows(page);
  await createWorkflow(page, workflowName);

  const workflowCard = page
    .locator('[data-testid^="workflow-card-"]')
    .filter({ hasText: workflowName })
    .first();
  const workflowTestId = await workflowCard.getAttribute("data-testid");
  const workflowId = workflowTestId?.replace("workflow-card-", "");

  expect(workflowId).toBeTruthy();

  await page.goto(`/#/workflows/${workflowId}`);

  await expect(page.getByTestId("workflow-detail-panel")).toBeVisible();
  await page.getByRole("button", { name: "Close detail panel" }).click();

  await expect(page).toHaveURL(/#\/workflows$/);
  await expect(page.getByTestId("workflows-view")).toBeVisible();
});

test("forum reply deep links survive reload", async ({ page }) => {
  await page.goto(
    `/#/channels/${WATERCOLOR_CHANNEL_ID}/posts/${FORUM_POST_ID}?replyId=${FORUM_REPLY_ID}`,
  );

  await expect(page.getByTestId("chat-title")).toHaveText("watercooler");
  await expect(
    page.getByText("Looks good to me. We should ship it."),
  ).toBeVisible();

  await page.reload();

  await expect(page.getByTestId("chat-title")).toHaveText("watercooler");
  await expect(
    page.getByText("Looks good to me. We should ship it."),
  ).toBeVisible();
});

test("back and forward restore open thread panels", async ({ page }) => {
  await page.goto("/");

  await page.getByTestId("channel-general").click();
  await expect(page.getByTestId("chat-title")).toHaveText("general");

  const rootMessage = page
    .getByTestId("message-timeline")
    .getByTestId("message-row")
    .first();
  await rootMessage.hover();
  await rootMessage.getByRole("button", { name: "Reply" }).click();

  const threadPanel = page.getByTestId("message-thread-panel");
  await expect(threadPanel).toBeVisible();
  await expect(page).toHaveURL(/thread=/);

  await page.getByTestId("channel-random").click();
  await expect(page.getByTestId("chat-title")).toHaveText("random");
  await expect(threadPanel).not.toBeVisible();

  await page.getByTestId("global-back").click();
  await expect(page.getByTestId("chat-title")).toHaveText("general");
  await expect(threadPanel).toBeVisible();

  await page.getByTestId("global-forward").click();
  await expect(page.getByTestId("chat-title")).toHaveText("random");
  await expect(threadPanel).not.toBeVisible();
});

test("back undoes closing a thread panel", async ({ page }) => {
  await page.goto("/");

  await page.getByTestId("channel-general").click();
  await expect(page.getByTestId("chat-title")).toHaveText("general");

  const rootMessage = page
    .getByTestId("message-timeline")
    .getByTestId("message-row")
    .first();
  await rootMessage.hover();
  await rootMessage.getByRole("button", { name: "Reply" }).click();

  const threadPanel = page.getByTestId("message-thread-panel");
  await expect(threadPanel).toBeVisible();

  await threadPanel.getByRole("button", { name: "Close panel" }).click();
  await expect(threadPanel).not.toBeVisible();

  await page.getByTestId("global-back").click();
  await expect(threadPanel).toBeVisible();
});

test("open thread panels survive reload", async ({ page }) => {
  await page.goto("/");

  await page.getByTestId("channel-general").click();
  await expect(page.getByTestId("chat-title")).toHaveText("general");

  const rootMessage = page
    .getByTestId("message-timeline")
    .getByTestId("message-row")
    .first();
  await rootMessage.hover();
  await rootMessage.getByRole("button", { name: "Reply" }).click();

  const threadPanel = page.getByTestId("message-thread-panel");
  await expect(threadPanel).toBeVisible();
  await expect(page).toHaveURL(/thread=/);

  await page.reload();

  await expect(page.getByTestId("chat-title")).toHaveText("general");
  await expect(threadPanel).toBeVisible();
});

test("home inbox selection survives reload and back restores it", async ({
  page,
}) => {
  await page.goto("/");

  const inboxList = page.getByTestId("home-inbox-list");
  await expect(inboxList).toBeVisible();
  const items = inboxList.locator('[data-testid^="home-inbox-item-"]');
  await expect(items.first()).toBeVisible();

  // The wide-viewport default selection stays local-only — the URL records
  // explicit selections, so background loads never touch the history stack.
  await expect(page.getByTestId("home-inbox-detail")).toBeVisible();
  expect(page.url()).not.toContain("item=");
  const defaultUrl = page.url();

  const selectedItem = items.first();
  const selectedTestId = await selectedItem.getAttribute("data-testid");
  const selectedItemId = selectedTestId?.replace("home-inbox-item-", "");
  expect(selectedItemId).toBeTruthy();
  await selectedItem.click();
  await expect
    .poll(() => page.url())
    .toContain(`item=${encodeURIComponent(selectedItemId ?? "")}`);

  await page.reload();

  await expect(inboxList).toBeVisible();
  await expect(page.getByTestId("home-inbox-detail")).toBeVisible();
  expect(page.url()).toContain(
    `item=${encodeURIComponent(selectedItemId ?? "")}`,
  );

  await page.getByTestId("global-back").click();
  await expect.poll(() => page.url()).toBe(defaultUrl);
});

test("settings is a route: section survives reload, closing returns to the previous panel state", async ({
  page,
}) => {
  await page.goto("/");

  // Open a channel with a thread panel so there's panel state to come back to.
  await page.getByTestId("channel-general").click();
  await expect(page.getByTestId("chat-title")).toHaveText("general");
  const rootMessage = page
    .getByTestId("message-timeline")
    .getByTestId("message-row")
    .first();
  await rootMessage.hover();
  await rootMessage.getByRole("button", { name: "Reply" }).click();
  const threadPanel = page.getByTestId("message-thread-panel");
  await expect(threadPanel).toBeVisible();
  const channelUrl = page.url();

  await openSettings(page);
  await expect(page).toHaveURL(/#\/settings/);

  // Section switches rewrite the settings entry (replace, not push).
  await page.getByTestId("settings-nav-notifications").click();
  await expect(page).toHaveURL(/section=notifications/);

  await page.reload();
  await expect(page.getByTestId("settings-view")).toBeVisible();
  await expect(page).toHaveURL(/section=notifications/);

  await page.getByTestId("settings-back-to-app").click();
  await expect.poll(() => page.url()).toBe(channelUrl);
  await expect(page.getByTestId("chat-title")).toHaveText("general");
  await expect(threadPanel).toBeVisible();
});

test("settings shortcut returns without opening search dialog", async ({
  page,
}) => {
  await page.goto("/");
  await page.getByTestId("channel-general").click();
  await expect(page.getByTestId("chat-title")).toHaveText("general");
  const channelUrl = page.url();

  // Open search via the ⌘K shortcut so the focus-request counter is non-zero,
  // then close it. The Settings subtree remounts the sidebar + search on close,
  // which must not replay the stale counter and resurrect search.
  await page.evaluate(() => {
    const isMac = /mac|iphone|ipad|ipod/i.test(navigator.platform);
    window.dispatchEvent(
      new KeyboardEvent("keydown", {
        bubbles: true,
        cancelable: true,
        code: "KeyK",
        ctrlKey: !isMac,
        key: "k",
        metaKey: isMac,
      }),
    );
  });
  await expect(page.getByTestId("search-dialog-input")).toBeFocused();
  await page.keyboard.press("Escape");
  await expect(page.getByTestId("search-results")).not.toBeVisible();

  await page.keyboard.press(
    process.platform === "darwin" ? "Meta+Comma" : "Control+Comma",
  );

  await expect(page).toHaveURL(/#\/settings/);
  await page.getByTestId("settings-back-to-app").click();

  await expect.poll(() => page.url()).toBe(channelUrl);
  await expect(page.getByTestId("chat-title")).toHaveText("general");
  await expect(page.getByTestId("search-results")).not.toBeVisible();
});

test("message links to visible root messages open the thread panel", async ({
  page,
}) => {
  await page.goto("/");
  await page.getByTestId("channel-general").click();
  await expect(page.getByTestId("chat-title")).toHaveText("general");
  await expect(page.getByTestId("message-timeline")).toContainText(
    "Welcome to #general",
  );

  const link =
    "buzz://message?channel=9a1657ac-f7aa-5db0-b632-d8bbeb6dfb50&id=mock-general-welcome";
  await page.getByTestId("message-input").fill(`Root link repro ${link}`);
  await page.getByTestId("send-message").click();

  const linkMessage = page
    .getByTestId("message-row")
    .filter({ hasText: "Root link repro" })
    .last();
  await expect(linkMessage).toBeVisible();
  await linkMessage
    .getByRole("button", { name: "Open message in general" })
    .click();

  const threadPanel = page.getByTestId("message-thread-panel");
  await expect(threadPanel).toBeVisible();
  await expect(page).toHaveURL(/thread=mock-general-welcome/);
  await expect(threadPanel.getByTestId("message-thread-head")).toContainText(
    "Welcome to #general",
  );
});

test("message links reopen a closed thread when the same messageId is already in the URL", async ({
  page,
}) => {
  await page.goto(
    "/#/channels/9a1657ac-f7aa-5db0-b632-d8bbeb6dfb50?messageId=mock-general-welcome",
  );
  await expect(page.getByTestId("chat-title")).toHaveText("general");

  const threadPanel = page.getByTestId("message-thread-panel");
  await expect(threadPanel).toBeVisible();
  await expect(threadPanel.getByTestId("message-thread-head")).toContainText(
    "Welcome to #general",
  );

  await threadPanel.getByRole("button", { name: "Close panel" }).click();
  await expect(threadPanel).not.toBeVisible();

  const link =
    "buzz://message?channel=9a1657ac-f7aa-5db0-b632-d8bbeb6dfb50&id=mock-general-welcome";
  await page
    .getByTestId("message-input")
    .fill(`Reopen same root link repro ${link}`);
  await page.getByTestId("send-message").click();

  const linkMessage = page
    .getByTestId("message-row")
    .filter({ hasText: "Reopen same root link repro" })
    .last();
  await expect(linkMessage).toBeVisible();
  await linkMessage
    .getByRole("button", { name: "Open message in general" })
    .click();

  await expect(threadPanel).toBeVisible();
  await expect(threadPanel.getByTestId("message-thread-head")).toContainText(
    "Welcome to #general",
  );
});

test("message deep links survive reload", async ({ page }) => {
  await page.goto(
    `/#/channels/${ENGINEERING_CHANNEL_ID}?messageId=mock-engineering-shipped`,
  );

  await expect(page.getByTestId("chat-title")).toHaveText("engineering");
  await expect(page.getByTestId("message-timeline")).toContainText(
    "Engineering shipped the desktop build.",
  );

  await page.reload();

  await expect(page.getByTestId("chat-title")).toHaveText("engineering");
  await expect(page.getByTestId("message-timeline")).toContainText(
    "Engineering shipped the desktop build.",
  );
});