"""Tests for app/views/help.py module – user-facing Help Center."""

import pytest


@pytest.mark.integration
class TestHelpViews:
    """Tests for the Help Center view routes."""

    def test_help_returns_200(self, client):
        """GET /help should return the Help Center page."""
        response = client.get("/help")
        assert response.status_code == 200

    def test_help_contains_help_center_title(self, client):
        """The page should contain the Help Center heading."""
        response = client.get("/help")
        assert b"Help Center" in response.content

    def test_help_contains_quick_start_section(self, client):
        """The page should contain the Quick Start section."""
        response = client.get("/help")
        assert b"Quick Start" in response.content

    def test_help_contains_sources_section(self, client):
        """The page should contain the Sources section."""
        response = client.get("/help")
        assert b"Sources" in response.content

    def test_help_contains_destinations_section(self, client):
        """The page should contain the Destinations section."""
        response = client.get("/help")
        assert b"Destinations" in response.content

    def test_help_contains_faq_section(self, client):
        """The page should contain the FAQ section."""
        response = client.get("/help")
        assert b"Frequently Asked Questions" in response.content

    def test_help_contains_support_section(self, client):
        """The page should contain the Contact Support section."""
        response = client.get("/help")
        assert b"Contact Support" in response.content

    def test_help_route_is_registered(self, client):
        """Verify the /help route exists in the app router."""
        response = client.get("/help")
        assert response.status_code != 405


@pytest.mark.unit
class TestHelpViewUnit:
    """Unit tests for the help view module."""

    def test_help_returns_200(self):
        """Verify the help center returns HTTP 200."""
        from fastapi import FastAPI
        from fastapi.testclient import TestClient
        from starlette.middleware.sessions import SessionMiddleware

        from app.views.help import router

        app = FastAPI()
        app.add_middleware(SessionMiddleware, secret_key="test-secret")
        app.include_router(router)
        with TestClient(app) as tc:
            resp = tc.get("/help")
        assert resp.status_code == 200

    def test_help_page_has_seo_meta(self):
        """Verify SEO meta tags are present in the response."""
        from fastapi import FastAPI
        from fastapi.testclient import TestClient
        from starlette.middleware.sessions import SessionMiddleware

        from app.views.help import router

        app = FastAPI()
        app.add_middleware(SessionMiddleware, secret_key="test-secret")
        app.include_router(router)
        with TestClient(app) as tc:
            resp = tc.get("/help")
        assert b'name="description"' in resp.content
        assert b'name="robots"' in resp.content

    def test_help_page_has_structured_data(self):
        """Verify JSON-LD structured data is present."""
        from fastapi import FastAPI
        from fastapi.testclient import TestClient
        from starlette.middleware.sessions import SessionMiddleware

        from app.views.help import router

        app = FastAPI()
        app.add_middleware(SessionMiddleware, secret_key="test-secret")
        app.include_router(router)
        with TestClient(app) as tc:
            resp = tc.get("/help")
        assert b"application/ld+json" in resp.content
        assert b"FAQPage" in resp.content

    def test_docs_build_path_constant(self):
        """Verify _DOCS_BUILD_DIR is resolved relative to the app package."""
        import pathlib

        from app.views.help import _DOCS_BUILD_DIR

        assert isinstance(_DOCS_BUILD_DIR, pathlib.Path)
        # Should point to <repo_root>/docs_build
        assert _DOCS_BUILD_DIR.name == "docs_build"

    def test_zammad_chat_hidden_when_disabled(self):
        """Chat widget markup should not appear when Zammad chat is disabled."""
        from fastapi import FastAPI
        from fastapi.testclient import TestClient
        from starlette.middleware.sessions import SessionMiddleware

        from app.views.help import router

        app = FastAPI()
        app.add_middleware(SessionMiddleware, secret_key="test-secret")
        app.include_router(router)
        with TestClient(app) as tc:
            resp = tc.get("/help")
        # Default settings: zammad_chat_enabled=False → no chat script
        assert b"ZammadChat" not in resp.content

    def test_zammad_form_hidden_when_disabled(self):
        """Ticket form markup should not appear when Zammad form is disabled."""
        from fastapi import FastAPI
        from fastapi.testclient import TestClient
        from starlette.middleware.sessions import SessionMiddleware

        from app.views.help import router

        app = FastAPI()
        app.add_middleware(SessionMiddleware, secret_key="test-secret")
        app.include_router(router)
        with TestClient(app) as tc:
            resp = tc.get("/help")
        # Default settings: zammad_form_enabled=False → no form script
        assert b"ZammadForm" not in resp.content


@pytest.mark.unit
class TestHelpViewUserContext:
    """Tests that user context is passed to Zammad widgets."""

    @staticmethod
    def _make_app_with_session(user_data: dict | None = None):
        """Build a minimal FastAPI app with session middleware and optional user session."""
        from fastapi import FastAPI
        from fastapi.testclient import TestClient
        from starlette.middleware.sessions import SessionMiddleware

        from app.views.help import router

        app = FastAPI()
        app.add_middleware(SessionMiddleware, secret_key="test-secret")
        app.include_router(router)
        tc = TestClient(app)

        if user_data is not None:
            # Seed a session by setting the cookie through a helper endpoint
            from fastapi import Request as _Req
            from fastapi.responses import JSONResponse

            @app.get("/_test_set_session")
            async def _set_session(request: _Req):
                request.session["user"] = user_data
                return JSONResponse({"ok": True})

            tc.get("/_test_set_session")

        return tc

    def test_user_context_not_in_page_when_anonymous(self):
        """Anonymous visitors should not see user context variables in the output."""
        tc = self._make_app_with_session(user_data=None)
        resp = tc.get("/help")
        assert resp.status_code == 200
        # No user context metadata should appear
        assert b"DocuElevate User Context" not in resp.content

    def test_user_context_rendered_in_zammad_form_when_logged_in(self):
        """With Zammad form enabled, logged-in user's name/email should appear in the script block."""
        from unittest.mock import patch

        tc = self._make_app_with_session(
            user_data={
                "name": "Test User",
                "email": "test@example.com",
                "preferred_username": "testuser",
            }
        )
        with patch("app.views.help.settings") as mock_settings:
            mock_settings.external_hostname = "localhost"
            mock_settings.zammad_url = "https://zammad.example.com"
            mock_settings.zammad_form_enabled = True
            mock_settings.zammad_chat_enabled = False
            mock_settings.zammad_chat_id = 1
            mock_settings.support_email = None
            resp = tc.get("/help")
        assert resp.status_code == 200
        assert b"Test User" in resp.content
        assert b"test@example.com" in resp.content
        assert b"testuser" in resp.content
        assert b"DocuElevate User Context" in resp.content

    def test_user_context_rendered_in_zammad_chat_when_logged_in(self):
        """With Zammad chat enabled, user's name/email should appear in the ZammadChat constructor."""
        from unittest.mock import patch

        tc = self._make_app_with_session(
            user_data={
                "name": "Chat User",
                "email": "chat@example.com",
                "preferred_username": "chatuser",
            }
        )
        with patch("app.views.help.settings") as mock_settings:
            mock_settings.external_hostname = "localhost"
            mock_settings.zammad_url = "https://zammad.example.com"
            mock_settings.zammad_form_enabled = False
            mock_settings.zammad_chat_enabled = True
            mock_settings.zammad_chat_id = 1
            mock_settings.support_email = None
            resp = tc.get("/help")
        assert resp.status_code == 200
        assert b"Chat User" in resp.content
        assert b"chat@example.com" in resp.content

    def test_user_id_falls_back_to_email(self):
        """When preferred_username is absent, user_id should resolve to email."""
        from unittest.mock import patch

        tc = self._make_app_with_session(
            user_data={
                "email": "only-email@example.com",
            }
        )
        with patch("app.views.help.settings") as mock_settings:
            mock_settings.external_hostname = "localhost"
            mock_settings.zammad_url = "https://zammad.example.com"
            mock_settings.zammad_form_enabled = True
            mock_settings.zammad_chat_enabled = False
            mock_settings.zammad_chat_id = 1
            mock_settings.support_email = None
            resp = tc.get("/help")
        assert resp.status_code == 200
        # user_id falls back to email; check it appears in the Username metadata line
        content = resp.text
        assert "only-email@example.com" in content
        assert "DocuElevate User Context" in content

    def test_user_name_falls_back_to_display_name(self):
        """When 'name' is absent, display_name should be used as the user_name fallback."""
        from unittest.mock import patch

        tc = self._make_app_with_session(
            user_data={
                "display_name": "Display Only",
                "email": "display@example.com",
                "id": "user-123",
            }
        )
        with patch("app.views.help.settings") as mock_settings:
            mock_settings.external_hostname = "localhost"
            mock_settings.zammad_url = "https://zammad.example.com"
            mock_settings.zammad_form_enabled = True
            mock_settings.zammad_chat_enabled = False
            mock_settings.zammad_chat_id = 1
            mock_settings.support_email = None
            resp = tc.get("/help")
        assert resp.status_code == 200
        # display_name used as fallback for user_name
        assert b"Display Only" in resp.content


@pytest.mark.integration
class TestHelpNavigationLink:
    """Tests that the Help link appears in the navigation."""

    def test_help_link_in_nav(self, client):
        """The Help navigation link should appear in the base template."""
        response = client.get("/about")
        assert response.status_code == 200
        # The Help link should be present somewhere in the rendered page
        assert b"/help" in response.content

    def test_help_link_has_accessible_text(self, client):
        """The Help link should have visible text for accessibility."""
        response = client.get("/about")
        assert response.status_code == 200
        content = response.text
        # Should include the word "Help" associated with /help
        assert "Help" in content


@pytest.mark.integration
class TestAdminDocsLinks:
    """Tests that admin doc links are in the admin menu markup."""

    def test_api_docs_link_in_admin_menu(self, client):
        """The admin menu HTML should contain the API Docs link."""
        response = client.get("/about")
        assert response.status_code == 200
        assert b"/admin/api-docs" in response.content

    def test_developer_docs_link_in_admin_menu(self, client):
        """The admin menu HTML should contain the Developer Docs link."""
        response = client.get("/about")
        assert response.status_code == 200
        assert b"/developer-docs/" in response.content