"""Integration tests for Story 2.6: Generate Registration Link."""

from datetime import datetime, timedelta

from src.models import Exchange


class TestGenerateRegistrationLink:
    """Test cases for registration link generation (Story 2.6)."""

    def test_registration_link_generated_for_exchange(self, client, db, admin):  # noqa: ARG002
        """Test that unique link is generated for each exchange.

        Acceptance Criteria:
        - Unique link generated for each exchange
        """
        # Login first
        client.post(
            "/admin/login",
            data={
                "email": "admin@example.com",
                "password": "testpassword123",
            },
            follow_redirects=True,
        )

        # Create two exchanges
        future_close_date = datetime.utcnow() + timedelta(days=7)
        future_exchange_date = datetime.utcnow() + timedelta(days=14)

        exchange1 = Exchange(
            slug=Exchange.generate_slug(),
            name="Exchange 1",
            budget="$20-30",
            max_participants=10,
            registration_close_date=future_close_date,
            exchange_date=future_exchange_date,
            timezone="America/New_York",
            state=Exchange.STATE_DRAFT,
        )

        exchange2 = Exchange(
            slug=Exchange.generate_slug(),
            name="Exchange 2",
            budget="$20-30",
            max_participants=10,
            registration_close_date=future_close_date,
            exchange_date=future_exchange_date,
            timezone="America/New_York",
            state=Exchange.STATE_DRAFT,
        )

        db.session.add(exchange1)
        db.session.add(exchange2)
        db.session.commit()

        # View first exchange details
        response1 = client.get(f"/admin/exchange/{exchange1.id}")
        assert response1.status_code == 200

        # View second exchange details
        response2 = client.get(f"/admin/exchange/{exchange2.id}")
        assert response2.status_code == 200

        # Verify different slugs in registration links
        assert exchange1.slug.encode() in response1.data
        assert exchange2.slug.encode() in response2.data
        assert exchange1.slug != exchange2.slug

    def test_registration_link_is_copyable(self, client, db, admin):  # noqa: ARG002
        """Test that link is copyable to clipboard.

        Acceptance Criteria:
        - Link is copyable to clipboard
        """
        # Login first
        client.post(
            "/admin/login",
            data={
                "email": "admin@example.com",
                "password": "testpassword123",
            },
            follow_redirects=True,
        )

        # Create an exchange
        future_close_date = datetime.utcnow() + timedelta(days=7)
        future_exchange_date = datetime.utcnow() + timedelta(days=14)

        exchange = Exchange(
            slug=Exchange.generate_slug(),
            name="Test Exchange",
            budget="$20-30",
            max_participants=10,
            registration_close_date=future_close_date,
            exchange_date=future_exchange_date,
            timezone="America/New_York",
            state=Exchange.STATE_DRAFT,
        )

        db.session.add(exchange)
        db.session.commit()

        # View exchange details
        response = client.get(f"/admin/exchange/{exchange.id}")
        assert response.status_code == 200

        # Verify copy button or mechanism exists
        assert b"copy" in response.data.lower() or b"clipboard" in response.data.lower()

    def test_registration_link_displayed_in_detail_view(self, client, db, admin):  # noqa: ARG002
        """Test that link is displayed when exchange is in appropriate state.

        Acceptance Criteria:
        - Link is displayed when exchange is in appropriate state
        """
        # Login first
        client.post(
            "/admin/login",
            data={
                "email": "admin@example.com",
                "password": "testpassword123",
            },
            follow_redirects=True,
        )

        # Create exchange
        future_close_date = datetime.utcnow() + timedelta(days=7)
        future_exchange_date = datetime.utcnow() + timedelta(days=14)

        exchange = Exchange(
            slug=Exchange.generate_slug(),
            name="Test Exchange",
            budget="$20-30",
            max_participants=10,
            registration_close_date=future_close_date,
            exchange_date=future_exchange_date,
            timezone="America/New_York",
            state=Exchange.STATE_DRAFT,
        )

        db.session.add(exchange)
        db.session.commit()

        # View exchange details
        response = client.get(f"/admin/exchange/{exchange.id}")
        assert response.status_code == 200

        # Verify registration link section exists
        assert (
            b"Registration Link" in response.data
            or b"registration link" in response.data.lower()
        )

    def test_registration_link_leads_to_correct_page(self, client, db, admin):  # noqa: ARG002
        """Test that link leads to registration page for that specific exchange.

        Acceptance Criteria:
        - Link leads to registration page for that specific exchange
        """
        # Login first
        client.post(
            "/admin/login",
            data={
                "email": "admin@example.com",
                "password": "testpassword123",
            },
            follow_redirects=True,
        )

        # Create exchange
        future_close_date = datetime.utcnow() + timedelta(days=7)
        future_exchange_date = datetime.utcnow() + timedelta(days=14)

        exchange = Exchange(
            slug=Exchange.generate_slug(),
            name="Test Exchange",
            budget="$20-30",
            max_participants=10,
            registration_close_date=future_close_date,
            exchange_date=future_exchange_date,
            timezone="America/New_York",
            state=Exchange.STATE_DRAFT,
        )

        db.session.add(exchange)
        db.session.commit()

        # View exchange details
        response = client.get(f"/admin/exchange/{exchange.id}")
        assert response.status_code == 200

        # Verify the link format contains the slug
        expected_link_part = f"/exchange/{exchange.slug}/register"
        assert expected_link_part.encode() in response.data

    def test_registration_link_uses_slug_not_id(self, client, db, admin):  # noqa: ARG002
        """Test that registration link uses slug instead of numeric ID.

        Acceptance Criteria:
        - Unique link generated for each exchange
        - Link uses slug (not ID) for security
        """
        # Login first
        client.post(
            "/admin/login",
            data={
                "email": "admin@example.com",
                "password": "testpassword123",
            },
            follow_redirects=True,
        )

        # Create exchange
        future_close_date = datetime.utcnow() + timedelta(days=7)
        future_exchange_date = datetime.utcnow() + timedelta(days=14)

        exchange = Exchange(
            slug=Exchange.generate_slug(),
            name="Test Exchange",
            budget="$20-30",
            max_participants=10,
            registration_close_date=future_close_date,
            exchange_date=future_exchange_date,
            timezone="America/New_York",
            state=Exchange.STATE_DRAFT,
        )

        db.session.add(exchange)
        db.session.commit()

        # View exchange details
        response = client.get(f"/admin/exchange/{exchange.id}")
        assert response.status_code == 200

        # Verify slug is in the link
        assert exchange.slug.encode() in response.data

        # Verify numeric ID is NOT in the registration link part
        # (It will be in admin URLs, but not in the public registration link)
        response_text = response.data.decode()
        # Extract registration link section
        if "Registration Link" in response_text:
            # Find the registration link
            assert f"/exchange/{exchange.slug}/register" in response_text
            # Should NOT contain /exchange/{id}/register
            assert f"/exchange/{exchange.id}/register" not in response_text

    def test_registration_link_contains_full_url(self, client, db, admin):  # noqa: ARG002
        """Test that registration link is a complete URL.

        Acceptance Criteria:
        - Link is copyable (implies full URL)
        """
        # Login first
        client.post(
            "/admin/login",
            data={
                "email": "admin@example.com",
                "password": "testpassword123",
            },
            follow_redirects=True,
        )

        # Create exchange
        future_close_date = datetime.utcnow() + timedelta(days=7)
        future_exchange_date = datetime.utcnow() + timedelta(days=14)

        exchange = Exchange(
            slug=Exchange.generate_slug(),
            name="Test Exchange",
            budget="$20-30",
            max_participants=10,
            registration_close_date=future_close_date,
            exchange_date=future_exchange_date,
            timezone="America/New_York",
            state=Exchange.STATE_DRAFT,
        )

        db.session.add(exchange)
        db.session.commit()

        # View exchange details
        response = client.get(f"/admin/exchange/{exchange.id}")
        assert response.status_code == 200

        # Verify full URL is displayed (starts with http:// or https://)
        assert (
            b"http://" in response.data or b"https://" in response.data
        ), "Registration link should be a full URL"

    def test_registration_link_available_in_all_states(self, client, db, admin):  # noqa: ARG002
        """Test that registration link is available regardless of exchange state.

        Acceptance Criteria:
        - Link is displayed when exchange is in appropriate state
        - Note: Based on design, link is always shown but may have different behavior
        """
        # Login first
        client.post(
            "/admin/login",
            data={
                "email": "admin@example.com",
                "password": "testpassword123",
            },
            follow_redirects=True,
        )

        future_close_date = datetime.utcnow() + timedelta(days=7)
        future_exchange_date = datetime.utcnow() + timedelta(days=14)

        # Test in different states
        for state in [
            Exchange.STATE_DRAFT,
            Exchange.STATE_REGISTRATION_OPEN,
        ]:
            exchange = Exchange(
                slug=Exchange.generate_slug(),
                name=f"Exchange in {state}",
                budget="$20-30",
                max_participants=10,
                registration_close_date=future_close_date,
                exchange_date=future_exchange_date,
                timezone="America/New_York",
                state=state,
            )

            db.session.add(exchange)
            db.session.commit()

            # View exchange details
            response = client.get(f"/admin/exchange/{exchange.id}")
            assert response.status_code == 200

            # Verify registration link is displayed
            assert exchange.slug.encode() in response.data
            assert b"/exchange/" in response.data
            assert b"/register" in response.data