import { test, expect, Page } from "@playwright/test";
import { getBackendUrl } from "./helpers/backend-url";

/**
 * Profile E2E tests
 *
 * These tests verify that:
 * 1. Regular users can access and use the profile page
 * 2. Admin users cannot access the profile page
 * 3. Profile data persists correctly
 * 4. Validation works as expected
 */

// Test credentials - must match what's seeded in the database via seed.py
function getRequiredEnv(name: string): string {
  const value = process.env[name];
  if (!value) {
    throw new Error(`Required environment variable ${name} is not set.`);
  }
  return value;
}

const REGULAR_USER = {
  email: getRequiredEnv("DEV_USER_EMAIL"),
  password: getRequiredEnv("DEV_USER_PASSWORD"),
};

const ADMIN_USER = {
  email: getRequiredEnv("DEV_ADMIN_EMAIL"),
  password: getRequiredEnv("DEV_ADMIN_PASSWORD"),
};

// Valid test npub (32 zero bytes encoded as bech32)
const VALID_NPUB = "npub1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqzqujme";

// Helper to clear auth cookies
async function clearAuth(page: Page) {
  await page.context().clearCookies();
}

// Helper to login a user
async function loginUser(page: Page, email: string, password: string) {
  await page.goto("/login");
  await page.fill('input[type="email"]', email);
  await page.fill('input[type="password"]', password);
  await page.click('button[type="submit"]');
  await page.waitForURL((url) => !url.pathname.includes("/login"), { timeout: 10000 });
}

// Helper to clear profile data via API
async function clearProfileData(page: Page) {
  const cookies = await page.context().cookies();
  const authCookie = cookies.find((c) => c.name === "auth_token");

  if (authCookie) {
    await page.request.put(`${getBackendUrl()}/api/profile`, {
      headers: {
        Cookie: `auth_token=${authCookie.value}`,
        "Content-Type": "application/json",
      },
      data: {
        contact_email: null,
        telegram: null,
        signal: null,
        nostr_npub: null,
      },
    });
  }
}

test.describe("Profile - Regular User Access", () => {
  test.beforeEach(async ({ context, page }) => {
    // Set English language before any navigation
    await context.addInitScript(() => {
      localStorage.setItem("arbret-locale", "en");
    });
    await clearAuth(page);
    await loginUser(page, REGULAR_USER.email, REGULAR_USER.password);
  });

  test("can navigate to profile page and page displays correct elements", async ({ page }) => {
    // Test navigation from exchange
    await page.goto("/exchange");
    await expect(page.getByText("My Profile")).toBeVisible();
    await page.click('a[href="/profile"]');
    await expect(page).toHaveURL("/profile");

    // Test navigation from trades
    await page.goto("/trades");
    await expect(page.getByText("My Profile")).toBeVisible();
    await page.click('a[href="/profile"]');
    await expect(page).toHaveURL("/profile");

    // Test page structure
    await expect(page.getByRole("heading", { name: "My Profile" })).toBeVisible();
    // Check for email label with read-only badge (combined in parent element)
    await expect(page.getByText("EmailRead only")).toBeVisible();
    await expect(page.getByText("Contact Details")).toBeVisible();
    await expect(page.getByText(/communication purposes only/i)).toBeVisible();

    // Test form fields visibility
    await expect(page.getByLabel("Contact Email")).toBeVisible();
    await expect(page.getByLabel("Telegram")).toBeVisible();
    await expect(page.getByLabel("Signal")).toBeVisible();
    await expect(page.getByLabel("Nostr (npub)")).toBeVisible();

    // Test login email is read-only
    const loginEmailInput = page.locator('input[type="email"][disabled]');
    await expect(loginEmailInput).toHaveValue(REGULAR_USER.email);
    await expect(loginEmailInput).toBeDisabled();

    // Test navigation links
    await expect(page.locator('a[href="/exchange"]')).toBeVisible();
    await expect(page.locator('a[href="/trades"]')).toBeVisible();
  });
});

test.describe("Profile - Form Behavior", () => {
  test.beforeEach(async ({ context, page }) => {
    await context.addInitScript(() => {
      window.localStorage.setItem("arbret-locale", "en");
    });
    await clearAuth(page);
    await loginUser(page, REGULAR_USER.email, REGULAR_USER.password);
    // Clear any existing profile data
    await clearProfileData(page);
  });

  test("form state management, save, persistence, and clearing fields", async ({ page }) => {
    await page.goto("/profile");

    // All editable fields should be empty
    await expect(page.getByLabel("Contact Email")).toHaveValue("");
    await expect(page.getByLabel("Telegram")).toHaveValue("");
    await expect(page.getByLabel("Signal")).toHaveValue("");
    await expect(page.getByLabel("Nostr (npub)")).toHaveValue("");

    // Save button should be disabled when no changes
    const saveButton = page.getByRole("button", { name: /save changes/i });
    await expect(saveButton).toBeDisabled();

    // Make a change - button should be enabled
    await page.fill("#telegram", "@testhandle");
    await expect(saveButton).toBeEnabled();

    // Now test saving and persistence - fill in all fields
    await page.fill("#contact_email", "contact@test.com");
    await page.fill("#telegram", "@testuser");
    await page.fill("#signal", "signal.42");
    await page.fill("#nostr_npub", VALID_NPUB);

    // Save
    await page.click('button:has-text("Save Changes")');
    await expect(page.getByText(/saved successfully/i)).toBeVisible();

    // Reload and verify values persist
    await page.reload();
    await expect(page.getByLabel("Contact Email")).toHaveValue("contact@test.com");
    await expect(page.getByLabel("Telegram")).toHaveValue("@testuser");
    await expect(page.getByLabel("Signal")).toHaveValue("signal.42");
    await expect(page.getByLabel("Nostr (npub)")).toHaveValue(VALID_NPUB);

    // Test clearing a field
    await page.fill("#telegram", "@initial");
    await page.click('button:has-text("Save Changes")');
    await expect(page.getByText(/saved successfully/i)).toBeVisible();
    await expect(page.getByText(/saved successfully/i)).not.toBeVisible({ timeout: 5000 });

    // Clear the field
    await page.fill("#telegram", "");
    await page.click('button:has-text("Save Changes")');
    await expect(page.getByText(/saved successfully/i)).toBeVisible();

    // Reload and verify it's cleared
    await page.reload();
    await expect(page.getByLabel("Telegram")).toHaveValue("");
  });
});

test.describe("Profile - Validation", () => {
  test.beforeEach(async ({ context, page }) => {
    await context.addInitScript(() => {
      window.localStorage.setItem("arbret-locale", "en");
    });
    await clearAuth(page);
    await loginUser(page, REGULAR_USER.email, REGULAR_USER.password);
    await clearProfileData(page);
  });

  test("validation - all field validations and error fixing", async ({ page }) => {
    await page.goto("/profile");

    // Test telegram auto-prepend
    await page.fill("#telegram", "testhandle");
    await expect(page.locator("#telegram")).toHaveValue("@testhandle");

    // Test telegram error - no characters after @
    await page.fill("#telegram", "@");
    await expect(page.getByText(/at least one character after @/i)).toBeVisible({ timeout: 2000 });
    const saveButton = page.getByRole("button", { name: /save changes/i });
    await expect(saveButton).toBeDisabled();

    // Test invalid npub
    await page.fill("#nostr_npub", "invalidnpub");
    await expect(page.getByText(/must start with 'npub1'/i)).toBeVisible();
    await expect(saveButton).toBeDisabled();

    // Test invalid email format
    await page.fill("#contact_email", "not-an-email");
    await expect(page.getByText(/valid email/i)).toBeVisible();
    await expect(saveButton).toBeDisabled();

    // Fix all validation errors and save
    await page.fill("#telegram", "@validhandle");
    await expect(page.getByText(/at least one character after @/i)).not.toBeVisible({
      timeout: 2000,
    });

    await page.fill("#nostr_npub", VALID_NPUB);
    await expect(page.getByText(/must start with 'npub1'/i)).not.toBeVisible({ timeout: 2000 });

    await page.fill("#contact_email", "valid@email.com");
    await expect(page.getByText(/valid email/i)).not.toBeVisible({ timeout: 2000 });

    // Now all errors are fixed, save button should be enabled
    await expect(saveButton).toBeEnabled();
    await page.click('button:has-text("Save Changes")');
    await expect(page.getByText(/saved successfully/i)).toBeVisible();
  });
});

test.describe("Profile - Admin User Access", () => {
  test.beforeEach(async ({ context, page }) => {
    await context.addInitScript(() => {
      window.localStorage.setItem("arbret-locale", "en");
    });
    await clearAuth(page);
    await loginUser(page, ADMIN_USER.email, ADMIN_USER.password);
  });

  test("admin cannot access profile page or API", async ({ page, request }) => {
    // Admin should not see profile link
    await page.goto("/admin/trades");
    await expect(page).toHaveURL("/admin/trades");
    await expect(page.locator('a[href="/profile"]')).toHaveCount(0);

    // Admin should be redirected when accessing profile page
    await page.goto("/profile");
    await expect(page).toHaveURL("/admin/trades");

    // Admin API call should return 403
    const cookies = await page.context().cookies();
    const authCookie = cookies.find((c) => c.name === "auth_token");

    if (authCookie) {
      const response = await request.get(`${getBackendUrl()}/api/profile`, {
        headers: {
          Cookie: `auth_token=${authCookie.value}`,
        },
      });
      expect(response.status()).toBe(403);
    }
  });
});

test.describe("Profile - Unauthenticated Access", () => {
  test.beforeEach(async ({ context, page }) => {
    await context.addInitScript(() => {
      window.localStorage.setItem("arbret-locale", "en");
    });
    await clearAuth(page);
  });

  test("profile page and API require authentication", async ({ page, request }) => {
    // Page redirects to login
    await page.goto("/profile");
    await expect(page).toHaveURL("/login");

    // API requires authentication
    const response = await request.get(`${getBackendUrl()}/api/profile`);
    expect(response.status()).toBe(401);
  });
});