"""Integration tests for authentication API endpoints.

Note: These tests are marked as auth_intensive because they make many login
requests which can trigger rate limiting on deployed environments. They are
excluded from CI integration tests but run in local and unit test suites.
"""

import pytest
from uuid import uuid4


# Mark all tests in this module as auth_intensive
pytestmark = pytest.mark.auth_intensive


class TestAuthLogin:
    """Tests for login endpoint."""

    @pytest.mark.integration
    def test_login_success(self, integration_client):
        """Test successful login with default admin credentials."""
        response = integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )
        assert response.status_code == 200
        data = response.json()
        assert data["username"] == "admin"
        assert data["is_admin"] is True
        assert "orchard_session" in response.cookies

    @pytest.mark.integration
    def test_login_invalid_password(self, integration_client):
        """Test login with wrong password."""
        response = integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "wrongpassword"},
        )
        assert response.status_code == 401
        assert "Invalid username or password" in response.json()["detail"]

    @pytest.mark.integration
    def test_login_nonexistent_user(self, integration_client):
        """Test login with non-existent user."""
        response = integration_client.post(
            "/api/v1/auth/login",
            json={"username": "nonexistent", "password": "password"},
        )
        assert response.status_code == 401


class TestAuthLogout:
    """Tests for logout endpoint."""

    @pytest.mark.integration
    def test_logout_success(self, integration_client):
        """Test successful logout."""
        # First login
        login_response = integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )
        assert login_response.status_code == 200

        # Then logout
        logout_response = integration_client.post("/api/v1/auth/logout")
        assert logout_response.status_code == 200
        assert "Logged out successfully" in logout_response.json()["message"]

    @pytest.mark.integration
    def test_logout_without_session(self, integration_client):
        """Test logout without being logged in."""
        response = integration_client.post("/api/v1/auth/logout")
        # Should succeed even without session
        assert response.status_code == 200


class TestAuthMe:
    """Tests for get current user endpoint."""

    @pytest.mark.integration
    def test_get_me_authenticated(self, integration_client):
        """Test getting current user when authenticated."""
        # Login first
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )

        response = integration_client.get("/api/v1/auth/me")
        assert response.status_code == 200
        data = response.json()
        assert data["username"] == "admin"
        assert data["is_admin"] is True
        assert "id" in data
        assert "created_at" in data

    @pytest.mark.integration
    def test_get_me_unauthenticated(self, integration_client):
        """Test getting current user without authentication."""
        # Clear any existing cookies
        integration_client.cookies.clear()

        response = integration_client.get("/api/v1/auth/me")
        assert response.status_code == 401
        assert "Not authenticated" in response.json()["detail"]


class TestAuthChangePassword:
    """Tests for change password endpoint."""

    @pytest.mark.integration
    def test_change_password_success(self, integration_client):
        """Test successful password change."""
        # Login first
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )

        # Change password
        response = integration_client.post(
            "/api/v1/auth/change-password",
            json={"current_password": "changeme123", "new_password": "newpassword123"},
        )
        assert response.status_code == 200

        # Verify old password no longer works
        integration_client.cookies.clear()
        response = integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )
        assert response.status_code == 401

        # Verify new password works
        response = integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "newpassword123"},
        )
        assert response.status_code == 200

        # Reset password back to original for other tests
        reset_response = integration_client.post(
            "/api/v1/auth/change-password",
            json={"current_password": "newpassword123", "new_password": "changeme123"},
        )
        assert reset_response.status_code == 200, "Failed to reset admin password back to default"

    @pytest.mark.integration
    def test_change_password_wrong_current(self, integration_client):
        """Test password change with wrong current password."""
        # Login first
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )

        response = integration_client.post(
            "/api/v1/auth/change-password",
            json={"current_password": "wrongpassword", "new_password": "newpassword"},
        )
        assert response.status_code == 400
        assert "Current password is incorrect" in response.json()["detail"]


class TestAPIKeys:
    """Tests for API key management endpoints."""

    @pytest.mark.integration
    def test_create_and_list_api_key(self, integration_client):
        """Test creating and listing API keys."""
        # Login first
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )

        # Create API key
        create_response = integration_client.post(
            "/api/v1/auth/keys",
            json={"name": "test-key", "description": "Test API key"},
        )
        assert create_response.status_code == 200
        data = create_response.json()
        assert data["name"] == "test-key"
        assert data["description"] == "Test API key"
        assert "key" in data
        assert data["key"].startswith("orch_")
        key_id = data["id"]
        api_key = data["key"]

        # List API keys
        list_response = integration_client.get("/api/v1/auth/keys")
        assert list_response.status_code == 200
        keys = list_response.json()
        assert any(k["id"] == key_id for k in keys)

        # Clean up - delete the key
        integration_client.delete(f"/api/v1/auth/keys/{key_id}")

    @pytest.mark.integration
    def test_use_api_key_for_auth(self, integration_client):
        """Test using API key for authentication."""
        # Login and create API key
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )
        create_response = integration_client.post(
            "/api/v1/auth/keys",
            json={"name": "auth-test-key"},
        )
        api_key = create_response.json()["key"]
        key_id = create_response.json()["id"]

        # Clear cookies and use API key
        integration_client.cookies.clear()
        response = integration_client.get(
            "/api/v1/auth/me",
            headers={"Authorization": f"Bearer {api_key}"},
        )
        assert response.status_code == 200
        assert response.json()["username"] == "admin"

        # Clean up
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )
        integration_client.delete(f"/api/v1/auth/keys/{key_id}")

    @pytest.mark.integration
    def test_delete_api_key(self, integration_client):
        """Test revoking an API key."""
        # Login and create API key
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )
        create_response = integration_client.post(
            "/api/v1/auth/keys",
            json={"name": "delete-test-key"},
        )
        key_id = create_response.json()["id"]
        api_key = create_response.json()["key"]

        # Delete the key
        delete_response = integration_client.delete(f"/api/v1/auth/keys/{key_id}")
        assert delete_response.status_code == 200

        # Verify key no longer works
        integration_client.cookies.clear()
        response = integration_client.get(
            "/api/v1/auth/me",
            headers={"Authorization": f"Bearer {api_key}"},
        )
        assert response.status_code == 401


class TestAdminUserManagement:
    """Tests for admin user management endpoints."""

    @pytest.mark.integration
    def test_list_users(self, integration_client):
        """Test listing users as admin."""
        # Login as admin
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )

        response = integration_client.get("/api/v1/admin/users")
        assert response.status_code == 200
        users = response.json()
        assert len(users) >= 1
        assert any(u["username"] == "admin" for u in users)

    @pytest.mark.integration
    def test_create_user(self, integration_client):
        """Test creating a new user as admin."""
        # Login as admin
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )

        # Create new user
        test_username = f"testuser_{uuid4().hex[:8]}"
        response = integration_client.post(
            "/api/v1/admin/users",
            json={
                "username": test_username,
                "password": "testpassword",
                "email": "test@example.com",
            },
        )
        assert response.status_code == 200
        data = response.json()
        assert data["username"] == test_username
        assert data["email"] == "test@example.com"
        assert data["is_admin"] is False

        # Verify new user can login
        integration_client.cookies.clear()
        login_response = integration_client.post(
            "/api/v1/auth/login",
            json={"username": test_username, "password": "testpassword"},
        )
        assert login_response.status_code == 200

    @pytest.mark.integration
    def test_update_user(self, integration_client):
        """Test updating a user as admin."""
        # Login as admin
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )

        # Create a test user
        test_username = f"updateuser_{uuid4().hex[:8]}"
        integration_client.post(
            "/api/v1/admin/users",
            json={"username": test_username, "password": "password"},
        )

        # Update the user
        response = integration_client.put(
            f"/api/v1/admin/users/{test_username}",
            json={"email": "updated@example.com", "is_admin": True},
        )
        assert response.status_code == 200
        data = response.json()
        assert data["email"] == "updated@example.com"
        assert data["is_admin"] is True

    @pytest.mark.integration
    def test_reset_user_password(self, integration_client):
        """Test resetting a user's password as admin."""
        # Login as admin
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )

        # Create a test user
        test_username = f"resetuser_{uuid4().hex[:8]}"
        integration_client.post(
            "/api/v1/admin/users",
            json={"username": test_username, "password": "oldpassword"},
        )

        # Reset password
        response = integration_client.post(
            f"/api/v1/admin/users/{test_username}/reset-password",
            json={"new_password": "newpassword"},
        )
        assert response.status_code == 200

        # Verify new password works
        integration_client.cookies.clear()
        login_response = integration_client.post(
            "/api/v1/auth/login",
            json={"username": test_username, "password": "newpassword"},
        )
        assert login_response.status_code == 200

    @pytest.mark.integration
    def test_non_admin_cannot_access_admin_endpoints(self, integration_client):
        """Test that non-admin users cannot access admin endpoints."""
        # Login as admin and create non-admin user
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )
        test_username = f"nonadmin_{uuid4().hex[:8]}"
        integration_client.post(
            "/api/v1/admin/users",
            json={"username": test_username, "password": "password", "is_admin": False},
        )

        # Login as non-admin
        integration_client.cookies.clear()
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": test_username, "password": "password"},
        )

        # Try to access admin endpoints
        response = integration_client.get("/api/v1/admin/users")
        assert response.status_code == 403
        assert "Admin privileges required" in response.json()["detail"]


class TestSecurityEdgeCases:
    """Tests for security edge cases and validation."""

    @pytest.mark.integration
    def test_login_inactive_user(self, integration_client):
        """Test that inactive users cannot login."""
        # Login as admin and create a user
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )
        test_username = f"inactive_{uuid4().hex[:8]}"
        integration_client.post(
            "/api/v1/admin/users",
            json={"username": test_username, "password": "password123"},
        )

        # Deactivate the user
        integration_client.put(
            f"/api/v1/admin/users/{test_username}",
            json={"is_active": False},
        )

        # Try to login as inactive user
        integration_client.cookies.clear()
        response = integration_client.post(
            "/api/v1/auth/login",
            json={"username": test_username, "password": "password123"},
        )
        assert response.status_code == 401
        assert "Invalid username or password" in response.json()["detail"]

    @pytest.mark.integration
    def test_password_too_short_on_create(self, integration_client):
        """Test that short passwords are rejected when creating users."""
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )

        response = integration_client.post(
            "/api/v1/admin/users",
            json={"username": f"shortpw_{uuid4().hex[:8]}", "password": "short"},
        )
        assert response.status_code == 400
        assert "at least 8 characters" in response.json()["detail"]

    @pytest.mark.integration
    def test_password_too_short_on_change(self, integration_client):
        """Test that short passwords are rejected when changing password."""
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )

        response = integration_client.post(
            "/api/v1/auth/change-password",
            json={"current_password": "changeme123", "new_password": "short"},
        )
        assert response.status_code == 400
        assert "at least 8 characters" in response.json()["detail"]

    @pytest.mark.integration
    def test_password_too_short_on_reset(self, integration_client):
        """Test that short passwords are rejected when resetting password."""
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )

        # Create a test user first
        test_username = f"resetshort_{uuid4().hex[:8]}"
        integration_client.post(
            "/api/v1/admin/users",
            json={"username": test_username, "password": "password123"},
        )

        response = integration_client.post(
            f"/api/v1/admin/users/{test_username}/reset-password",
            json={"new_password": "short"},
        )
        assert response.status_code == 400
        assert "at least 8 characters" in response.json()["detail"]

    @pytest.mark.integration
    def test_duplicate_username_rejected(self, integration_client):
        """Test that duplicate usernames are rejected."""
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )

        test_username = f"duplicate_{uuid4().hex[:8]}"
        # Create user first time
        response1 = integration_client.post(
            "/api/v1/admin/users",
            json={"username": test_username, "password": "password123"},
        )
        assert response1.status_code == 200

        # Try to create same username again
        response2 = integration_client.post(
            "/api/v1/admin/users",
            json={"username": test_username, "password": "password456"},
        )
        assert response2.status_code == 409
        assert "already exists" in response2.json()["detail"]

    @pytest.mark.integration
    def test_cannot_delete_other_users_api_key(self, integration_client):
        """Test that users cannot delete API keys owned by other users."""
        # Login as admin and create an API key
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )
        create_response = integration_client.post(
            "/api/v1/auth/keys",
            json={"name": "admin-key"},
        )
        admin_key_id = create_response.json()["id"]

        # Create a non-admin user
        test_username = f"nonadmin_{uuid4().hex[:8]}"
        integration_client.post(
            "/api/v1/admin/users",
            json={"username": test_username, "password": "password123"},
        )

        # Login as non-admin
        integration_client.cookies.clear()
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": test_username, "password": "password123"},
        )

        # Try to delete admin's API key
        response = integration_client.delete(f"/api/v1/auth/keys/{admin_key_id}")
        assert response.status_code == 403
        assert "Cannot delete another user's API key" in response.json()["detail"]

        # Cleanup: login as admin and delete the key
        integration_client.cookies.clear()
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )
        integration_client.delete(f"/api/v1/auth/keys/{admin_key_id}")

    @pytest.mark.integration
    def test_sessions_invalidated_on_password_change(self, integration_client):
        """Test that all sessions are invalidated when password is changed."""
        # Create a test user
        integration_client.post(
            "/api/v1/auth/login",
            json={"username": "admin", "password": "changeme123"},
        )
        test_username = f"sessiontest_{uuid4().hex[:8]}"
        integration_client.post(
            "/api/v1/admin/users",
            json={"username": test_username, "password": "password123"},
        )

        # Login as test user
        integration_client.cookies.clear()
        login_response = integration_client.post(
            "/api/v1/auth/login",
            json={"username": test_username, "password": "password123"},
        )
        assert login_response.status_code == 200

        # Verify session works
        me_response = integration_client.get("/api/v1/auth/me")
        assert me_response.status_code == 200

        # Change password
        integration_client.post(
            "/api/v1/auth/change-password",
            json={"current_password": "password123", "new_password": "newpassword123"},
        )

        # Old session should be invalidated - try to access /me
        # (note: the change-password call itself may have cleared the session cookie)
        me_response2 = integration_client.get("/api/v1/auth/me")
        # This should fail because all sessions were invalidated
        assert me_response2.status_code == 401