"""
e2e tests for the source drop box feature.

The drop box is split into two distinct surfaces:
- Admin surface (/dropbox/admin) — authenticated, token management
- Source surface (/dropbox/upload/<token>) — unauthenticated, CSRF-exempt

Tests that exercise the source surface navigate in a fresh browser context
(or just navigate directly to the upload URL) to confirm there is no
session/authentication requirement on that path.
"""

from __future__ import annotations

import re
import time

import pytest
from playwright.sync_api import Page, expect

from tests.e2e.helpers import create_test_image, create_test_txt


# ---------------------------------------------------------------------------
# Helpers
# ---------------------------------------------------------------------------


def _create_token(page: Page, live_server: str, label: str = "e2e source", hours: int = 24) -> str:
    """Create a drop box token via the admin UI and return the full upload URL."""
    page.goto(f"{live_server}/dropbox/admin")
    page.wait_for_load_state("networkidle")

    label_input = page.locator("input[name='label']")
    if label_input.count():
        label_input.fill(label)

    page.fill("input[name='hours']", str(hours))
    page.fill("input[name='max_files']", "5")
    page.click("button[type='submit']")
    page.wait_for_load_state("networkidle")

    # Flash message contains the upload URL
    flash = page.locator("[class*='alert']").first.inner_text()
    match = re.search(r"http://\S+", flash)
    if not match:
        raise RuntimeError(f"No upload URL found in flash message: {flash!r}")

    return match.group(0)


# ---------------------------------------------------------------------------
# Admin panel tests
# ---------------------------------------------------------------------------


@pytest.mark.e2e
def test_dropbox_admin_page(live_server: str, authenticated_page: Page) -> None:
    """The /dropbox/admin page loads and shows the token creation form."""
    page = authenticated_page
    page.goto(f"{live_server}/dropbox/admin")
    page.wait_for_load_state("networkidle")

    expect(page.locator("input[name='label']")).to_be_visible()
    expect(page.locator("input[name='hours']")).to_be_visible()
    expect(page.locator("input[name='max_files']")).to_be_visible()
    expect(page.locator("button[type='submit']")).to_be_visible()


@pytest.mark.e2e
def test_create_upload_token(live_server: str, authenticated_page: Page) -> None:
    """Creating a token shows a success flash and the token appears in the active list."""
    page = authenticated_page
    upload_url = _create_token(page, live_server, label="my-e2e-source")

    # The upload URL must contain the expected prefix
    assert "/dropbox/upload/" in upload_url, f"Unexpected upload URL: {upload_url}"

    # The token should now appear in the active token table
    # (token[:12] is shown in the table as per the template)
    token_slug = upload_url.split("/dropbox/upload/")[1].split("?")[0]
    table = page.locator("table")
    if table.count() > 0:
        expect(table).to_contain_text(token_slug[:12])


@pytest.mark.e2e
def test_source_upload_page_accessible_without_auth(
    live_server: str, authenticated_page: Page, page: Page
) -> None:
    """The source upload page is accessible without any authentication.

    We get the URL via the admin (authenticated), then open it in a *separate*
    fresh page that has no session cookie.
    """
    upload_url = _create_token(authenticated_page, live_server, label="anon-test")

    # Navigate to the upload URL in the unauthenticated page
    page.goto(upload_url)
    page.wait_for_load_state("networkidle")

    # Must not redirect to login
    assert "/login" not in page.url, (
        f"Source upload page redirected to login: {page.url}"
    )

    # Upload form must be present
    expect(page.locator("input[type='file'], input[name='files']")).to_be_visible()


@pytest.mark.e2e
def test_source_upload_file(live_server: str, authenticated_page: Page, page: Page) -> None:
    """A source can upload a file via the drop box and receives a receipt code."""
    upload_url = _create_token(authenticated_page, live_server, label="upload-test")

    # Submit a file as the anonymous source (unauthenticated page)
    page.goto(upload_url)
    page.wait_for_load_state("networkidle")

    txt_bytes = create_test_txt()
    page.set_input_files(
        "input[type='file'], input[name='files']",
        files=[{"name": "tip.txt", "mimeType": "text/plain", "buffer": txt_bytes}],
    )

    page.click("button[type='submit']")
    page.wait_for_load_state("networkidle")

    # The response page should show a receipt code
    body_text = page.locator("body").inner_text()
    assert any(word in body_text.lower() for word in ("receipt", "success", "received", "upload")), (
        f"No success/receipt indication found after upload. Body: {body_text[:300]}"
    )


@pytest.mark.e2e
def test_invalid_token_rejected(live_server: str, page: Page) -> None:
    """A request with an invalid/missing token returns 404, not a login redirect."""
    page.goto(f"{live_server}/dropbox/upload/totally-invalid-token-xyz")
    page.wait_for_load_state("networkidle")

    # Should be a 404 / plain-text "expired or invalid" message, NOT a redirect to login
    assert "/login" not in page.url, (
        f"Invalid token redirected to login instead of showing 404: {page.url}"
    )
    body = page.locator("body").inner_text()
    assert any(word in body.lower() for word in ("expired", "invalid", "not found")), (
        f"Expected 'expired or invalid' message, got: {body[:200]}"
    )


@pytest.mark.e2e
def test_revoke_token(live_server: str, authenticated_page: Page, page: Page) -> None:
    """An admin can revoke a token; after revocation the upload URL returns 404."""
    admin_page = authenticated_page
    upload_url = _create_token(admin_page, live_server, label="revoke-test")
    token = upload_url.split("/dropbox/upload/")[1].split("?")[0]

    # Verify the token works before revocation
    page.goto(upload_url)
    page.wait_for_load_state("networkidle")
    assert "/login" not in page.url

    # Revoke via admin UI
    admin_page.goto(f"{live_server}/dropbox/admin")
    admin_page.wait_for_load_state("networkidle")

    # Find the revoke button for this token and click it
    revoke_form = admin_page.locator(f"form input[name='token'][value='{token}']").locator("..")
    if revoke_form.count() == 0:
        # Try by partial token match in the table row
        revoke_form = admin_page.locator("form").filter(
            has=admin_page.locator(f"input[value='{token}']")
        )

    if revoke_form.count() > 0:
        revoke_form.locator("button[type='submit']").click()
        admin_page.wait_for_load_state("networkidle")

        # Now the upload URL should return 404
        page.goto(upload_url)
        page.wait_for_load_state("networkidle")
        body = page.locator("body").inner_text()
        assert any(word in body.lower() for word in ("expired", "invalid", "not found")), (
            f"Expected 404 after revocation, got: {body[:200]}"
        )