"""E2E tests for the comment submission flow."""

from __future__ import annotations

import pytest
from playwright.sync_api import Page, expect

ARTICLE_SLUG = "nightly-playwright-journey"


def _go_to_article(page: Page, base_url: str) -> None:
    page.goto(f"{base_url}/articles/{ARTICLE_SLUG}/", wait_until="networkidle")


def _submit_comment(page: Page, *, name: str = "E2E Tester", email: str = "e2e@example.com", body: str) -> None:
    """Fill and submit the main (non-reply) comment form."""
    form = page.locator("form[data-comment-form]")
    form.locator('input[name="author_name"]').fill(name)
    form.locator('input[name="author_email"]').fill(email)
    form.locator('textarea[name="body"]').fill(body)
    form.get_by_role("button", name="Post comment").click()


@pytest.mark.e2e
def test_valid_comment_shows_moderation_message(page: Page, base_url: str) -> None:
    """Successful comment submission must show the awaiting-moderation banner."""
    _go_to_article(page, base_url)
    _submit_comment(page, body="This is a test comment from Playwright.")

    page.wait_for_url(lambda url: "commented=1" in url, timeout=10_000)
    expect(page.get_by_text("Your comment is awaiting moderation")).to_be_visible()


@pytest.mark.e2e
def test_valid_comment_not_immediately_visible(page: Page, base_url: str) -> None:
    """Submitted comment must NOT appear in the comments list before moderation."""
    _go_to_article(page, base_url)
    unique_body = "Unique unmoderated comment body xq7z"
    _submit_comment(page, body=unique_body)

    page.wait_for_url(lambda url: "commented=1" in url, timeout=10_000)
    expect(page.get_by_text(unique_body)).not_to_be_visible()


@pytest.mark.e2e
def test_empty_body_shows_form_errors(page: Page, base_url: str) -> None:
    _go_to_article(page, base_url)
    _submit_comment(page, body="   ")  # whitespace-only body
    page.wait_for_load_state("networkidle")

    expect(page.locator('[aria-label="Comment form errors"]')).to_be_visible()
    assert "commented=1" not in page.url


@pytest.mark.e2e
def test_missing_name_shows_form_errors(page: Page, base_url: str) -> None:
    _go_to_article(page, base_url)

    form = page.locator("form[data-comment-form]")
    form.locator('input[name="author_name"]').fill("")
    form.locator('input[name="author_email"]').fill("e2e@example.com")
    form.locator('textarea[name="body"]').fill("Comment without a name.")
    form.get_by_role("button", name="Post comment").click()
    page.wait_for_load_state("networkidle")

    assert "commented=1" not in page.url


@pytest.mark.e2e
def test_reply_form_visible_on_approved_comment(page: Page, base_url: str) -> None:
    """An approved seeded comment must display a reply form."""
    _go_to_article(page, base_url)

    # The seeded approved comment should be visible
    expect(page.get_by_text("E2E Approved Commenter")).to_be_visible()
    # And a Reply button for it
    expect(page.get_by_role("button", name="Reply")).to_be_visible()


@pytest.mark.e2e
def test_reply_submission_redirects(page: Page, base_url: str) -> None:
    """Submitting a reply to an approved comment should redirect with commented=1."""
    _go_to_article(page, base_url)

    # The reply form is always visible below the approved seeded comment
    reply_form = page.locator("form[action]").filter(has=page.get_by_role("button", name="Reply")).first
    reply_form.locator('input[name="author_name"]').fill("E2E Replier")
    reply_form.locator('input[name="author_email"]').fill("replier@example.com")
    reply_form.locator('textarea[name="body"]').fill("This is a test reply.")
    reply_form.get_by_role("button", name="Reply").click()

    page.wait_for_url(lambda url: "commented=1" in url, timeout=10_000)
    expect(page.get_by_text("Your comment is awaiting moderation")).to_be_visible()


@pytest.mark.e2e
def test_comments_section_absent_when_disabled(page: Page, base_url: str) -> None:
    """Article with comments_enabled=False must not show the comments section."""
    response = page.goto(f"{base_url}/articles/e2e-no-comments/", wait_until="networkidle")
    assert response is not None and response.status == 200, (
        f"Expected 200 for e2e-no-comments article, got {response and response.status}"
    )
    expect(page.get_by_role("heading", level=1)).to_have_text("No Comments Article")
    expect(page.get_by_role("heading", name="Comments", exact=True)).to_have_count(0)
    expect(page.get_by_role("button", name="Post comment")).to_have_count(0)