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

/**
 * 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
 */

const API_URL = process.env.NEXT_PUBLIC_API_URL || "http://localhost:8000";

// 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(`${API_URL}/api/profile`, {
      headers: {
        Cookie: `auth_token=${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 ({ page }) => {
    await clearAuth(page);
    await loginUser(page, REGULAR_USER.email, REGULAR_USER.password);
  });

  test("can navigate to profile page from counter", async ({ page }) => {
    await page.goto("/");
    
    // Should see My Profile link
    await expect(page.getByText("My Profile")).toBeVisible();
    
    // Click to navigate
    await page.click('a[href="/profile"]');
    await expect(page).toHaveURL("/profile");
  });

  test("can navigate to profile page from sum", async ({ page }) => {
    await page.goto("/sum");
    
    // Should see My Profile link
    await expect(page.getByText("My Profile")).toBeVisible();
    
    // Click to navigate
    await page.click('a[href="/profile"]');
    await expect(page).toHaveURL("/profile");
  });

  test("profile page displays correct elements", async ({ page }) => {
    await page.goto("/profile");
    
    // Should see page title
    await expect(page.getByRole("heading", { name: "My Profile" })).toBeVisible();
    
    // Should see login email label with read-only badge
    await expect(page.getByText("Login EmailRead only")).toBeVisible();
    
    // Should see contact details section
    await expect(page.getByText("Contact Details")).toBeVisible();
    await expect(page.getByText(/communication purposes only/i)).toBeVisible();
    
    // Should see all form fields
    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 displayed and read-only", async ({ page }) => {
    await page.goto("/profile");
    
    // Login email should show the user's email
    const loginEmailInput = page.locator('input[type="email"][disabled]');
    await expect(loginEmailInput).toHaveValue(REGULAR_USER.email);
    await expect(loginEmailInput).toBeDisabled();
  });

  test("navigation shows Counter, Sum, and My Profile", async ({ page }) => {
    await page.goto("/profile");
    
    // Should see all nav items (Counter and Sum as links)
    await expect(page.locator('a[href="/"]')).toBeVisible();
    await expect(page.locator('a[href="/sum"]')).toBeVisible();
    // My Profile is the page title (h1) since we're on this page
    await expect(page.getByRole("heading", { name: "My Profile" })).toBeVisible();
  });
});

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

  test("new user has empty profile 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("");
  });

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

  test("save button is enabled after making changes", async ({ page }) => {
    await page.goto("/profile");
    
    // Make a change
    await page.fill("#telegram", "@testhandle");
    
    // Save button should be enabled
    const saveButton = page.getByRole("button", { name: /save changes/i });
    await expect(saveButton).toBeEnabled();
  });

  test("can save profile and values persist", async ({ page }) => {
    await page.goto("/profile");
    
    // 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")');
    
    // Should see success message
    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("can clear a field and save", async ({ page }) => {
    await page.goto("/profile");
    
    // First set a value
    await page.fill("#telegram", "@initial");
    await page.click('button:has-text("Save Changes")');
    await expect(page.getByText(/saved successfully/i)).toBeVisible();
    
    // Wait for toast to disappear
    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 ({ page }) => {
    await clearAuth(page);
    await loginUser(page, REGULAR_USER.email, REGULAR_USER.password);
    await clearProfileData(page);
  });

  test("auto-prepends @ for telegram when starting with letter", async ({ page }) => {
    await page.goto("/profile");
    
    // Type a letter without @ - should auto-prepend @
    await page.fill("#telegram", "testhandle");
    
    // Should show @testhandle in the input
    await expect(page.locator("#telegram")).toHaveValue("@testhandle");
  });

  test("shows error for telegram handle that is too short", async ({ page }) => {
    await page.goto("/profile");
    
    // Enter telegram with @ but too short (needs 5+ chars)
    await page.fill("#telegram", "@ab");
    
    // Wait for debounced validation
    await page.waitForTimeout(600);
    
    // Should show error about length
    await expect(page.getByText(/at least 5 characters/i)).toBeVisible();
    
    // Save button should be disabled
    const saveButton = page.getByRole("button", { name: /save changes/i });
    await expect(saveButton).toBeDisabled();
  });

  test("shows error for invalid npub", async ({ page }) => {
    await page.goto("/profile");
    
    // Enter invalid npub
    await page.fill("#nostr_npub", "invalidnpub");
    
    // Should show error
    await expect(page.getByText(/must start with 'npub1'/i)).toBeVisible();
    
    // Save button should be disabled
    const saveButton = page.getByRole("button", { name: /save changes/i });
    await expect(saveButton).toBeDisabled();
  });

  test("can fix validation error and save", async ({ page }) => {
    await page.goto("/profile");
    
    // Enter invalid telegram
    await page.fill("#telegram", "noat");
    await expect(page.getByText(/must start with @/i)).toBeVisible();
    
    // Fix it
    await page.fill("#telegram", "@validhandle");
    
    // Error should disappear
    await expect(page.getByText(/must start with @/i)).not.toBeVisible();
    
    // Should be able to save
    const saveButton = page.getByRole("button", { name: /save changes/i });
    await expect(saveButton).toBeEnabled();
    
    await page.click('button:has-text("Save Changes")');
    await expect(page.getByText(/saved successfully/i)).toBeVisible();
  });

  test("shows error for invalid email format", async ({ page }) => {
    await page.goto("/profile");
    
    // Enter invalid email
    await page.fill("#contact_email", "not-an-email");
    
    // Should show error
    await expect(page.getByText(/valid email/i)).toBeVisible();
  });
});

test.describe("Profile - Admin User Access", () => {
  test.beforeEach(async ({ page }) => {
    await clearAuth(page);
    await loginUser(page, ADMIN_USER.email, ADMIN_USER.password);
  });

  test("admin does not see My Profile link", async ({ page }) => {
    await page.goto("/audit");
    
    // Should be on audit page
    await expect(page).toHaveURL("/audit");
    
    // Should NOT see My Profile link
    await expect(page.locator('a[href="/profile"]')).toHaveCount(0);
  });

  test("admin cannot access profile page - redirected to audit", async ({ page }) => {
    await page.goto("/profile");
    
    // Should be redirected to audit
    await expect(page).toHaveURL("/audit");
  });

  test("admin API call to profile returns 403", async ({ page, request }) => {
    const cookies = await page.context().cookies();
    const authCookie = cookies.find(c => c.name === "auth_token");
    
    if (authCookie) {
      // Try to call profile API directly
      const response = await request.get(`${API_URL}/api/profile`, {
        headers: {
          Cookie: `auth_token=${authCookie.value}`,
        },
      });
      
      expect(response.status()).toBe(403);
    }
  });
});

test.describe("Profile - Unauthenticated Access", () => {
  test.beforeEach(async ({ page }) => {
    await clearAuth(page);
  });

  test("profile page redirects to login", async ({ page }) => {
    await page.goto("/profile");
    await expect(page).toHaveURL("/login");
  });

  test("profile API requires authentication", async ({ page, request }) => {
    const response = await request.get(`${API_URL}/api/profile`);
    expect(response.status()).toBe(401);
  });
});