/**
 * Shared vault setup for the Playwright specs.
 *
 * Every spec used to carry its own copy of this flow, and most copies still
 * filled "password123" — which fails the create-vault gate (12 chars AND
 * zxcvbn score >= 2), so the button stayed disabled, no vault was created, and
 * the rest of the spec ran against a locked popup while still reporting green.
 * setupVault() below asserts it reached the unlocked vault, so that failure
 * mode is now a loud error instead of a silent pass.
 */
import { chromium, expect, type BrowserContext, type Page } from "@playwright/test";
import { fileURLToPath } from "url";
import { dirname, join } from "path";
import os from "os";
import fs from "fs/promises";

const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);
export const EXTENSION_PATH = join(__dirname, "..", "..", "dist-chrome");

/** Passes both the 12-character minimum and the zxcvbn strength gate. */
export const VAULT_PASSWORD = "correct horse battery staple";

/** The unlocked vault's tell — present only once the vault view is mounted. */
export const UNLOCKED = ".peach-lock-btn[aria-label='Lock vault']";

export async function makeContext(prefix = "peach"): Promise<BrowserContext> {
  const userDataDir = join(
    os.tmpdir(),
    `${prefix}-${Date.now()}-${Math.random().toString(36).slice(2)}`,
  );
  await fs.mkdir(userDataDir, { recursive: true });
  return chromium.launchPersistentContext(userDataDir, {
    executablePath: process.env.PLAYWRIGHT_CHROMIUM_EXECUTABLE_PATH,
    headless: false,
    args: [
      `--load-extension=${EXTENSION_PATH}`,
      `--disable-extensions-except=${EXTENSION_PATH}`,
    ],
  });
}

export async function waitForSW(ctx: BrowserContext, maxWait = 15000): Promise<string> {
  const start = Date.now();
  let sw = ctx.serviceWorkers()[0];
  while (!sw && Date.now() - start < maxWait) {
    await new Promise((r) => setTimeout(r, 500));
    sw = ctx.serviceWorkers()[0];
  }
  if (!sw) throw new Error(`No SW after ${maxWait}ms`);
  return new URL(sw.url()).host;
}

export async function loadPopup(ctx: BrowserContext): Promise<{ popup: Page; extId: string }> {
  const extId = await waitForSW(ctx);
  const popup = await ctx.newPage();
  await popup.goto(`chrome-extension://${extId}/src/popup/index.html`);
  await popup.waitForTimeout(3000);
  return { popup, extId };
}

/** Click through the intro carousel until the create-vault form is on screen. */
async function reachCreateScreen(popup: Page): Promise<void> {
  // Final card's nav button reads "Create vault"; card-body taps are guarded
  // there, so the carousel only advances via the button.
  const advanceButton = popup.getByRole("button", { name: /next|get started|create vault/i });
  // Create screen uses #master-password; the unlock/lock screen uses
  // #unlock-password. Keep this one pointed at the create field.
  const pw = popup.locator("#master-password");
  for (let i = 0; i < 5 && !(await pw.isVisible().catch(() => false)); i++) {
    if (await advanceButton.isVisible({ timeout: 500 }).catch(() => false)) {
      await advanceButton.click();
      await popup.waitForTimeout(300);
      continue;
    }
    await popup.locator(".peach-onboarding-card").click();
    await popup.waitForTimeout(300);
  }
  if (!(await pw.isVisible().catch(() => false))) {
    throw new Error("setupVault: never reached the create-vault screen (#master-password)");
  }
}

/**
 * Create a vault and land in the unlocked view.
 *
 * confirmRecovery: false stops on the recovery-words screen instead — only for
 * specs that assert on that screen itself.
 */
export async function setupVault(
  ctx: BrowserContext,
  password = VAULT_PASSWORD,
  opts: { confirmRecovery?: boolean } = {},
): Promise<{ popup: Page; extId: string }> {
  const { confirmRecovery = true } = opts;
  const { popup, extId } = await loadPopup(ctx);
  await reachCreateScreen(popup);
  await popup.locator("#master-password").fill(password);
  await popup.locator("#confirm-password").fill(password);
  // The submit button's label is replaced by the blocker message while the
  // gate is unmet ("need 4 more characters"), so locate it by class rather
  // than by name — and surface that label if it never becomes enabled.
  const createBtn = popup.locator(".peach-newvault-submit");
  if (!(await createBtn.isEnabled().catch(() => false))) {
    await expect(createBtn, `create-vault gate not met: "${await createBtn.textContent()}"`)
      .toBeEnabled({ timeout: 5000 });
  }
  await createBtn.click();
  // Vault creation runs Argon2id, which can exceed a few seconds under load —
  // give the recovery display room so this doesn't flake.
  await expect(popup.locator(".lock-screen--recovery-display")).toBeVisible({ timeout: 30000 });
  if (confirmRecovery) await completeRecoveryConfirmation(popup);
  return { popup, extId };
}

export async function completeRecoveryConfirmation(popup: Page): Promise<void> {
  const recoveryWords = popup.locator(".peach-recovery-word-text");
  const confirmInputs = popup.locator(".peach-recovery-confirm-input");
  const confirmButton = popup.getByRole("button", { name: /i wrote them down/i });

  await expect(confirmInputs).toHaveCount(3);
  // The confirmation inputs stay disabled until the 12 words render, which
  // is slow when several browsers derive Argon2 at once.
  await expect(confirmInputs.first()).toBeEnabled({ timeout: 30000 });

  const words = await recoveryWords.allTextContents();
  // The three positions are randomized per mount, so read each field's
  // "word N" label rather than assuming fixed slots.
  const fields = popup.locator(".peach-recovery-confirm-field");
  const fieldCount = await fields.count();
  if (fieldCount !== 3) throw new Error(`expected 3 confirm fields, saw ${fieldCount}`);
  for (let i = 0; i < fieldCount; i++) {
    const field = fields.nth(i);
    const numText = await field.locator(".peach-recovery-confirm-num").innerText();
    const pos = parseInt(numText.replace(/\D/g, ""), 10);
    const word = words[pos - 1]?.trim();
    if (!word) throw new Error(`missing recovery word for position ${pos}`);
    await field.locator(".peach-recovery-confirm-input").fill(word);
  }

  await expect(confirmButton).toBeEnabled({ timeout: 2000 });
  await confirmButton.click();
  await expect(
    popup.locator(UNLOCKED),
    "setupVault: recovery confirmation did not land in the unlocked vault",
  ).toBeVisible({ timeout: 10000 });
}

export async function lockVault(popup: Page): Promise<void> {
  const lockBtn = popup.locator(UNLOCKED);
  await expect(lockBtn).toBeVisible({ timeout: 15000 });
  await lockBtn.click();
  await expect(popup.locator("#unlock-password")).toBeVisible({ timeout: 15000 });
}

export async function unlockVault(popup: Page, password = VAULT_PASSWORD): Promise<void> {
  await popup.locator("#unlock-password").fill(password);
  await popup.getByRole("button", { name: /unlock/i }).click();
  await expect(popup.locator(UNLOCKED)).toBeVisible({ timeout: 20000 });
}

export async function openSettings(popup: Page): Promise<void> {
  await popup.locator(".peach-icon-btn[aria-label='Settings']").click();
  await expect(popup.locator(".stk-shell")).toBeVisible({ timeout: 10000 });
}

/**
 * Open the entry list. The top search bar is readOnly — clicking it is what
 * mounts the list overlay, which is where the real search input and the
 * new-entry button live.
 */
export async function openList(popup: Page): Promise<void> {
  if (await popup.locator(".peach-overlay-view .peach-search-input").isVisible().catch(() => false)) return;
  await popup.locator(".peach-search-wrap .peach-search-input").click();
  await expect(popup.locator(".peach-overlay-view .peach-search-input")).toBeVisible({ timeout: 5000 });
}

/** The editable search field, inside the list overlay. */
export function listSearch(popup: Page) {
  return popup.locator(".peach-overlay-view .peach-search-input");
}

/**
 * Fill and submit the new-entry form. Selectors follow Add.tsx: the title field
 * is .peach-new-title-input (it was .peach-new-name-input in an older UI, which
 * is why the specs that still use that class fail to find it).
 */
export async function createEntryViaForm(
  popup: Page,
  entry: { title: string; url?: string; username?: string; password?: string; totp?: string; notes?: string },
): Promise<void> {
  await openList(popup);
  await popup.locator(".peach-new-entry-row").click();
  await popup.locator(".peach-new-title-input").fill(entry.title);
  if (entry.url) await popup.locator(".peach-domain-value--edit").fill(entry.url);
  if (entry.username) await popup.locator('input[placeholder="johndoe"]').fill(entry.username);
  if (entry.password) await popup.locator('input[placeholder="password"]').fill(entry.password);
  // 2FA and notes are behind "+ add" links until they hold a value.
  if (entry.totp) {
    await popup.getByRole("button", { name: /add 2FA/i }).click();
    await popup.locator('input[placeholder*="BASE32" i]').fill(entry.totp);
  }
  if (entry.notes) {
    await popup.getByRole("button", { name: /add notes/i }).click();
    await popup.locator(".peach-new-textarea").fill(entry.notes);
  }
  const create = popup.getByRole("button", { name: /^create$/i });
  await expect(create, "create button stayed disabled — the entry form rejected the input").toBeEnabled();
  await create.click();
  await expect(popup.locator(".peach-new-title-input")).toHaveCount(0, { timeout: 10000 });
}

/** Add an entry through the background message API (faster than the new-entry form). */
export async function addEntry(
  popup: Page,
  entry: { title: string; url?: string; username?: string; password?: string; totp?: string },
): Promise<void> {
  const result = await popup.evaluate(async (payload) => {
    return new Promise<{ ok?: boolean; error?: string }>((resolve) => {
      chrome.runtime.sendMessage({ type: "ADD_ENTRY", payload: { type: "login", ...payload } }, resolve);
    });
  }, entry);
  // A locked vault answers { ok: false, error: "vault_locked" } — without this
  // check the entry silently never exists and the spec asserts nothing.
  if (!result?.ok) throw new Error(`addEntry(${entry.title}) failed: ${result?.error ?? "no response"}`);
}