"""
Integration tests for the Links feature.
Links are managed via Django template views, tested through the Django test client.
"""

import pytest

from links.models import Link


@pytest.mark.django_db
class TestLinksUI:
    def test_list_page_returns_200(self, client):
        response = client.get("/", follow=True)
        assert response.status_code == 200

    def test_create_link(self, client):
        response = client.post(
            "/create/",
            {
                "alias": "testlink",
                "original_url": "https://example.com",
                "link_type": Link.LinkType.LINK,
                "description": "",
                "text": "",
            },
            follow=True,
        )
        assert response.status_code == 200
        assert Link.objects.filter(alias="testlink").exists()

    def test_redirect_follows_alias(self, client):
        Link.objects.create(alias="gh", original_url="https://github.com")
        response = client.get("/gh/")
        assert response.status_code == 302
        assert response["Location"] == "https://github.com"

    def test_redirect_unknown_alias_goes_to_create(self, client):
        response = client.get("/definitely-not-a-real-alias/")
        assert response.status_code == 302
        assert "create" in response["Location"]

    def test_delete_link(self, client):
        link = Link.objects.create(alias="del-me", original_url="https://example.com")
        response = client.post(f"/delete/{link.pk}/")
        assert response.status_code in (200, 302)
        assert not Link.objects.filter(pk=link.pk).exists()

    def test_link_with_template_url(self, client):
        Link.objects.create(
            alias="gosearch",
            original_url="https://google.com/search?q={query,default=hello}",
        )
        response = client.get("/gosearch/")
        assert response.status_code == 302
        assert "q=hello" in response["Location"]

    def test_link_with_template_param_override(self, client):
        Link.objects.create(
            alias="wiki",
            original_url="https://en.wikipedia.org/wiki/{topic,default=Python}",
        )
        response = client.get("/wiki/Django/")
        assert response.status_code == 302
        assert "Django" in response["Location"]


@pytest.mark.django_db
class TestTemplateLinkFormValidation:
    """Tests for template URL validation in LinkForm, including static Unicode text."""

    def test_create_link_with_unicode_prefix_in_template_url(self, client):
        """Static Chinese text before a template param should be accepted."""
        original_url = 'https://chatgpt.com/?q=翻译下面的段落为中文: {query,default=Cool beans}'
        response = client.post(
            "/create/",
            {
                "alias": "chatgpt-translate",
                "original_url": original_url,
                "link_type": Link.LinkType.LINK,
                "description": "",
                "text": "",
            },
            follow=True,
        )
        assert response.status_code == 200
        link = Link.objects.get(alias="chatgpt-translate")
        assert link.original_url == original_url

    def test_create_link_with_unicode_suffix_in_template_url(self, client):
        """Static Chinese text after a template param should be accepted."""
        original_url = 'https://chatgpt.com/?q={query,default=Cool beans}，保证真实性'
        response = client.post(
            "/create/",
            {
                "alias": "chatgpt-verify",
                "original_url": original_url,
                "link_type": Link.LinkType.LINK,
                "description": "",
                "text": "",
            },
            follow=True,
        )
        assert response.status_code == 200
        link = Link.objects.get(alias="chatgpt-verify")
        assert link.original_url == original_url

    def test_create_link_with_unicode_around_template_param(self, client):
        """Static Unicode text both before and after a template param should be accepted."""
        original_url = 'https://chatgpt.com/?q=翻译: {query,default=hello} 保证真实性'
        response = client.post(
            "/create/",
            {
                "alias": "chatgpt-both",
                "original_url": original_url,
                "link_type": Link.LinkType.LINK,
                "description": "",
                "text": "",
            },
            follow=True,
        )
        assert response.status_code == 200
        link = Link.objects.get(alias="chatgpt-both")
        assert link.original_url == original_url

    def test_create_link_with_invalid_url_still_rejected(self, client):
        """A completely invalid URL (no scheme/host) must still be rejected."""
        response = client.post(
            "/create/",
            {
                "alias": "bad-url",
                "original_url": "not-a-url-at-all",
                "link_type": Link.LinkType.LINK,
                "description": "",
                "text": "",
            },
            follow=True,
        )
        assert not Link.objects.filter(alias="bad-url").exists()