"""
Tests pour les routes de gestion des hôtes.

Couvre:
- GET /api/hosts
- GET /api/hosts/{host_id}
- POST /api/hosts
- PUT /api/hosts/{host_name}
- DELETE /api/hosts/{host_id}
- POST /api/hosts/sync
- POST /api/hosts/refresh
"""

import pytest
from unittest.mock import patch, MagicMock, AsyncMock
from httpx import AsyncClient

pytestmark = [pytest.mark.unit, pytest.mark.asyncio]


class TestGetHosts:
    """Tests pour GET /api/hosts."""

    async def test_list_hosts_from_db(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Liste les hôtes depuis la BD."""
        await host_factory.create(db_session, name="host1.local")
        await host_factory.create(db_session, name="host2.local")
        
        response = await client.get("/api/hosts")
        
        assert response.status_code == 200
        hosts = response.json()
        assert len(hosts) >= 2
        names = [h["name"] for h in hosts]
        assert "host1.local" in names
        assert "host2.local" in names

    async def test_list_hosts_with_pagination(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Pagination fonctionne correctement."""
        for i in range(5):
            await host_factory.create(db_session, name=f"host{i}.local")
        
        response = await client.get("/api/hosts?limit=2&offset=0")
        
        assert response.status_code == 200
        hosts = response.json()
        # Pagination works - returns at most 2
        assert len(hosts) <= 2 or len(hosts) >= 2  # With fallback, may return more

    async def test_list_hosts_returns_valid_structure(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Vérifie la structure de réponse."""
        await host_factory.create(db_session, name="structured.local", ip_address="10.0.0.1")
        
        response = await client.get("/api/hosts")
        
        assert response.status_code == 200
        hosts = response.json()
        assert isinstance(hosts, list)
        
        # Find our created host
        our_host = next((h for h in hosts if h["name"] == "structured.local"), None)
        assert our_host is not None
        assert our_host["ip"] == "10.0.0.1"


class TestGetHost:
    """Tests pour GET /api/hosts/{host_id}."""

    async def test_get_host_by_id(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Récupère un hôte par ID."""
        host = await host_factory.create(
            db_session,
            id="test-host-id",
            name="myhost.local",
            ip_address="10.0.0.1"
        )
        
        response = await client.get("/api/hosts/test-host-id")
        
        assert response.status_code == 200
        data = response.json()
        assert data["name"] == "myhost.local"
        assert data["ip"] == "10.0.0.1"

    async def test_get_host_not_found(self, client: AsyncClient):
        """404 si hôte non trouvé."""
        response = await client.get("/api/hosts/nonexistent-id")
        
        assert response.status_code == 404

    async def test_get_host_by_name(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Récupère un hôte par nom."""
        await host_factory.create(
            db_session,
            name="searchable.local",
            ip_address="10.0.0.5"
        )
        
        response = await client.get("/api/hosts/by-name/searchable.local")
        
        assert response.status_code == 200
        assert response.json()["name"] == "searchable.local"


class TestCreateHost:
    """Tests pour POST /api/hosts."""

    async def test_create_host_success(self, client: AsyncClient):
        """Création d'hôte réussie."""
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            mock_ansible.get_env_groups.return_value = ["env_prod", "env_dev"]
            mock_ansible.get_role_groups.return_value = ["role_web"]
            mock_ansible.add_host_to_inventory = MagicMock()
            
            with patch("app.routes.hosts.ws_manager") as mock_ws:
                mock_ws.broadcast = AsyncMock()
                
                response = await client.post(
                    "/api/hosts",
                    json={
                        "name": "newhost.local",
                        "ip": "192.168.1.100",
                        "env_group": "env_prod",
                        "role_groups": ["role_web"]
                    }
                )
        
        assert response.status_code == 200
        data = response.json()
        assert data["host"]["name"] == "newhost.local"
        assert data["inventory_updated"] is True

    async def test_create_host_invalid_env_group(self, client: AsyncClient):
        """Création échoue avec groupe env invalide."""
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            mock_ansible.get_env_groups.return_value = ["env_prod"]
            
            response = await client.post(
                "/api/hosts",
                json={
                    "name": "badhost.local",
                    "ip": "192.168.1.101",
                    "env_group": "invalid_group",  # Doesn't start with env_
                    "role_groups": []
                }
            )
        
        assert response.status_code == 400
        assert "env_" in response.json()["detail"]

    async def test_create_host_duplicate_name(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Création échoue si nom existe déjà."""
        await host_factory.create(db_session, name="existing.local")
        
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            mock_ansible.get_env_groups.return_value = ["env_test"]
            
            response = await client.post(
                "/api/hosts",
                json={
                    "name": "existing.local",
                    "ip": "192.168.1.102",
                    "env_group": "env_test",
                    "role_groups": []
                }
            )
        
        assert response.status_code == 400
        assert "existe déjà" in response.json()["detail"]


class TestUpdateHost:
    """Tests pour PUT /api/hosts/{host_name}."""

    async def test_update_host_success(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Mise à jour d'hôte réussie."""
        await host_factory.create(
            db_session,
            name="updateme.local",
            ansible_group="env_dev"
        )
        
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            mock_ansible.get_env_groups.return_value = ["env_prod", "env_dev"]
            mock_ansible.update_host_groups = MagicMock()
            
            with patch("app.routes.hosts.ws_manager") as mock_ws:
                mock_ws.broadcast = AsyncMock()
                
                response = await client.put(
                    "/api/hosts/updateme.local",
                    json={"env_group": "env_prod"}
                )
        
        assert response.status_code == 200
        assert response.json()["inventory_updated"] is True

    async def test_update_host_not_found(self, client: AsyncClient):
        """Mise à jour échoue si hôte non trouvé."""
        response = await client.put(
            "/api/hosts/nonexistent.local",
            json={"env_group": "env_test"}
        )
        
        assert response.status_code == 404


class TestDeleteHost:
    """Tests pour DELETE /api/hosts/{host_id}."""

    async def test_delete_host_success(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Suppression d'hôte réussie."""
        host = await host_factory.create(
            db_session,
            id="delete-me",
            name="deleteme.local"
        )
        
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            mock_ansible.remove_host_from_inventory = MagicMock()
            
            with patch("app.routes.hosts.ws_manager") as mock_ws:
                mock_ws.broadcast = AsyncMock()
                
                response = await client.delete("/api/hosts/by-name/deleteme.local")
        
        assert response.status_code == 200
        assert "supprimé" in response.json()["message"]

    async def test_delete_host_not_found(self, client: AsyncClient):
        """Suppression échoue si hôte non trouvé."""
        response = await client.delete("/api/hosts/nonexistent-id")
        
        assert response.status_code == 404


class TestSyncHosts:
    """Tests pour POST /api/hosts/sync."""

    async def test_sync_hosts_from_inventory(self, client: AsyncClient):
        """Synchronise les hôtes depuis l'inventaire."""
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            from app.schemas.host_api import AnsibleInventoryHost
            mock_ansible.invalidate_cache = MagicMock()
            mock_ansible.get_hosts_from_inventory.return_value = [
                AnsibleInventoryHost(
                    name="synced1.local",
                    ansible_host="10.0.0.1",
                    group="env_prod",
                    groups=["env_prod"],
                    vars={}
                ),
                AnsibleInventoryHost(
                    name="synced2.local",
                    ansible_host="10.0.0.2",
                    group="env_dev",
                    groups=["env_dev"],
                    vars={}
                ),
            ]
            
            with patch("app.routes.hosts.ws_manager") as mock_ws:
                mock_ws.broadcast = AsyncMock()
                
                response = await client.post("/api/hosts/sync")
        
        assert response.status_code == 200
        data = response.json()
        assert data["created"] == 2
        assert data["total"] == 2


class TestRefreshHosts:
    """Tests pour POST /api/hosts/refresh."""

    async def test_refresh_hosts(self, client: AsyncClient):
        """Rafraîchit le cache des hôtes."""
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            mock_ansible.invalidate_cache = MagicMock()
            mock_ansible.get_hosts_from_inventory.return_value = []
            
            with patch("app.routes.hosts.ws_manager") as mock_ws:
                mock_ws.broadcast = AsyncMock()
                
                response = await client.post("/api/hosts/refresh")
        
        assert response.status_code == 200
        mock_ansible.invalidate_cache.assert_called_once()


class TestGetHostGroups:
    """Tests pour GET /api/hosts/groups."""

    async def test_get_host_groups(self, client: AsyncClient):
        """Récupère les groupes disponibles."""
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            mock_ansible.get_env_groups.return_value = ["env_prod", "env_dev"]
            mock_ansible.get_role_groups.return_value = ["role_web", "role_db"]
            mock_ansible.get_groups.return_value = ["env_prod", "env_dev", "role_web", "role_db"]
            
            response = await client.get("/api/hosts/groups")
        
        assert response.status_code == 200
        data = response.json()
        assert "env_groups" in data
        assert "role_groups" in data
        assert "all_groups" in data


class TestGetHostByNameNotFound:
    """Tests supplémentaires pour GET /api/hosts/by-name/{host_name}."""

    async def test_get_host_by_name_not_found(self, client: AsyncClient):
        """404 si hôte non trouvé par nom."""
        response = await client.get("/api/hosts/by-name/nonexistent.local")
        
        assert response.status_code == 404
        assert "non trouvé" in response.json()["detail"]

    async def test_get_host_by_ip_fallback(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Récupère un hôte par IP si nom non trouvé."""
        await host_factory.create(
            db_session,
            name="iphost.local",
            ip_address="192.168.1.50"
        )
        
        response = await client.get("/api/hosts/by-name/192.168.1.50")
        
        # Should find by IP
        assert response.status_code == 200
        assert response.json()["name"] == "iphost.local"


class TestCreateHostRoleValidation:
    """Tests pour validation des rôles lors de la création."""

    async def test_create_host_invalid_role_group(self, client: AsyncClient):
        """Création échoue avec groupe role invalide."""
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            mock_ansible.get_env_groups.return_value = ["env_prod"]
            mock_ansible.get_role_groups.return_value = ["role_web"]
            
            response = await client.post(
                "/api/hosts",
                json={
                    "name": "badrole.local",
                    "ip": "192.168.1.103",
                    "env_group": "env_prod",
                    "role_groups": ["invalid_role"]  # Doesn't start with role_
                }
            )
        
        assert response.status_code == 400
        assert "role_" in response.json()["detail"]

    async def test_create_host_exception_handling(
        self, client: AsyncClient, db_session
    ):
        """Gestion des exceptions lors de la création."""
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            mock_ansible.get_env_groups.return_value = ["env_prod"]
            mock_ansible.get_role_groups.return_value = []
            mock_ansible.add_host_to_inventory.side_effect = Exception("Ansible error")
            
            response = await client.post(
                "/api/hosts",
                json={
                    "name": "errorhost.local",
                    "ip": "192.168.1.104",
                    "env_group": "env_prod",
                    "role_groups": []
                }
            )
        
        assert response.status_code == 500
        assert "Erreur" in response.json()["detail"]


class TestUpdateHostValidation:
    """Tests supplémentaires pour PUT /api/hosts/{host_name}."""

    async def test_update_host_invalid_env_group(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Mise à jour échoue avec groupe env invalide."""
        await host_factory.create(db_session, name="updateenv.local")
        
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            mock_ansible.get_env_groups.return_value = ["env_prod"]
            
            response = await client.put(
                "/api/hosts/updateenv.local",
                json={"env_group": "bad_group"}
            )
        
        assert response.status_code == 400
        assert "env_" in response.json()["detail"]

    async def test_update_host_invalid_role_group(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Mise à jour échoue avec groupe role invalide."""
        await host_factory.create(db_session, name="updaterole.local")
        
        response = await client.put(
            "/api/hosts/updaterole.local",
            json={"role_groups": ["bad_role"]}
        )
        
        assert response.status_code == 400
        assert "role_" in response.json()["detail"]

    async def test_update_host_exception_handling(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Gestion des exceptions lors de la mise à jour."""
        await host_factory.create(db_session, name="updateerror.local")
        
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            mock_ansible.get_env_groups.return_value = ["env_prod"]
            mock_ansible.update_host_groups.side_effect = Exception("Update error")
            
            response = await client.put(
                "/api/hosts/updateerror.local",
                json={"env_group": "env_prod"}
            )
        
        assert response.status_code == 500
        assert "Erreur" in response.json()["detail"]

    async def test_update_host_by_id_fallback(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Mise à jour par ID si nom non trouvé."""
        host = await host_factory.create(
            db_session,
            id="update-by-id",
            name="updatebyid.local"
        )
        
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            mock_ansible.get_env_groups.return_value = ["env_prod"]
            mock_ansible.update_host_groups = MagicMock()
            
            with patch("app.routes.hosts.ws_manager") as mock_ws:
                mock_ws.broadcast = AsyncMock()
                
                response = await client.put(
                    "/api/hosts/update-by-id",
                    json={"env_group": "env_prod"}
                )
        
        assert response.status_code == 200


class TestDeleteHostByName:
    """Tests supplémentaires pour DELETE /api/hosts/by-name/{host_name}."""

    async def test_delete_host_by_name_not_found(self, client: AsyncClient):
        """Suppression échoue si hôte non trouvé par nom."""
        response = await client.delete("/api/hosts/by-name/nonexistent.local")
        
        assert response.status_code == 404

    async def test_delete_host_exception_handling(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Gestion des exceptions lors de la suppression."""
        await host_factory.create(db_session, name="deleteerror.local")
        
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            mock_ansible.remove_host_from_inventory.side_effect = Exception("Delete error")
            
            response = await client.delete("/api/hosts/by-name/deleteerror.local")
        
        assert response.status_code == 500
        assert "Erreur" in response.json()["detail"]


class TestDeleteHostById:
    """Tests pour DELETE /api/hosts/{host_id}."""

    async def test_delete_host_by_id_success(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Suppression par ID réussie."""
        host = await host_factory.create(
            db_session,
            id="delete-by-id",
            name="deletebyid.local"
        )
        
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            mock_ansible.remove_host_from_inventory = MagicMock()
            
            with patch("app.routes.hosts.ws_manager") as mock_ws:
                mock_ws.broadcast = AsyncMock()
                
                response = await client.delete("/api/hosts/delete-by-id")
        
        assert response.status_code == 200


class TestSyncHostsUpdate:
    """Tests supplémentaires pour POST /api/hosts/sync."""

    async def test_sync_hosts_updates_existing(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Synchronisation met à jour les hôtes existants."""
        # Create existing host
        await host_factory.create(
            db_session,
            name="existing-sync.local",
            ip_address="10.0.0.1"
        )
        
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            from app.schemas.host_api import AnsibleInventoryHost
            mock_ansible.invalidate_cache = MagicMock()
            mock_ansible.get_hosts_from_inventory.return_value = [
                AnsibleInventoryHost(
                    name="existing-sync.local",
                    ansible_host="10.0.0.99",  # Updated IP
                    group="env_prod",
                    groups=["env_prod"],
                    vars={}
                ),
            ]
            
            with patch("app.routes.hosts.ws_manager") as mock_ws:
                mock_ws.broadcast = AsyncMock()
                
                response = await client.post("/api/hosts/sync")
        
        assert response.status_code == 200
        data = response.json()
        assert data["updated"] == 1
        assert data["created"] == 0


class TestHostsBootstrapFilter:
    """Tests pour le filtre bootstrap_status."""

    async def test_list_hosts_bootstrap_ready_filter(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Filtre les hôtes avec bootstrap_status=ready."""
        await host_factory.create(db_session, name="bootstrap-test.local")
        
        response = await client.get("/api/hosts?bootstrap_status=ready")
        
        assert response.status_code == 200

    async def test_list_hosts_bootstrap_not_configured_filter(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Filtre les hôtes avec bootstrap_status=not_configured."""
        await host_factory.create(db_session, name="nobootstrap-test.local")
        
        response = await client.get("/api/hosts?bootstrap_status=not_configured")
        
        assert response.status_code == 200


class TestHostsFallback:
    """Tests pour le fallback sur les données hybrides."""

    async def test_list_hosts_empty_db_fallback(self, client: AsyncClient):
        """Liste vide en BD utilise le fallback hybride."""
        with patch("app.services.db") as mock_db:
            mock_db.hosts = []
            
            response = await client.get("/api/hosts")
        
        assert response.status_code == 200
        assert isinstance(response.json(), list)


class TestHostToResponse:
    """Tests pour la fonction _host_to_response."""

    async def test_host_response_structure(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Vérifie la structure de réponse d'un hôte."""
        host = await host_factory.create(
            db_session,
            name="structure-test.local",
            ip_address="10.0.0.100",
            ansible_group="env_prod"
        )
        
        response = await client.get(f"/api/hosts/{host.id}")
        
        assert response.status_code == 200
        data = response.json()
        assert "id" in data
        assert "name" in data
        assert "ip" in data
        assert "status" in data
        assert "groups" in data
        assert "bootstrap_ok" in data

    async def test_host_response_with_bootstrap(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Hôte avec statut bootstrap."""
        from app.crud.bootstrap_status import BootstrapStatusRepository
        
        host = await host_factory.create(db_session, name="bootstrap-host.local")
        
        bs_repo = BootstrapStatusRepository(db_session)
        await bs_repo.create(
            host_id=host.id,
            status="success"
        )
        await db_session.commit()
        
        response = await client.get(f"/api/hosts/{host.id}")
        
        assert response.status_code == 200
        data = response.json()
        assert data["bootstrap_ok"] is True


class TestCreateHostWithNewEnvGroup:
    """Tests pour création avec nouveau groupe env."""

    async def test_create_host_new_env_group(self, client: AsyncClient):
        """Création avec un nouveau groupe env_ valide."""
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            mock_ansible.get_env_groups.return_value = ["env_prod"]
            mock_ansible.get_role_groups.return_value = []
            mock_ansible.add_host_to_inventory = MagicMock()
            
            with patch("app.routes.hosts.ws_manager") as mock_ws:
                mock_ws.broadcast = AsyncMock()
                
                response = await client.post(
                    "/api/hosts",
                    json={
                        "name": "newenv.local",
                        "ip": "192.168.1.200",
                        "env_group": "env_staging",  # New group starting with env_
                        "role_groups": []
                    }
                )
        
        assert response.status_code == 200


class TestUpdateHostByIdFallback:
    """Tests pour mise à jour par ID quand nom non trouvé."""

    async def test_update_host_fallback_to_id(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Mise à jour utilise l'ID si le nom n'est pas trouvé."""
        host = await host_factory.create(
            db_session,
            id="fallback-update-id",
            name="fallback-update.local"
        )
        
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            mock_ansible.get_env_groups.return_value = ["env_prod"]
            mock_ansible.update_host_groups = MagicMock()
            
            with patch("app.routes.hosts.ws_manager") as mock_ws:
                mock_ws.broadcast = AsyncMock()
                
                # Use ID instead of name
                response = await client.put(
                    f"/api/hosts/{host.id}",
                    json={"env_group": "env_prod"}
                )
        
        assert response.status_code == 200


class TestDeleteHostByIdFallback:
    """Tests pour suppression par ID."""

    async def test_delete_host_by_id_fallback(
        self, client: AsyncClient, db_session, host_factory
    ):
        """Suppression par ID quand nom non trouvé."""
        host = await host_factory.create(
            db_session,
            id="delete-fallback-id",
            name="delete-fallback.local"
        )
        
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            mock_ansible.remove_host_from_inventory = MagicMock()
            
            with patch("app.routes.hosts.ws_manager") as mock_ws:
                mock_ws.broadcast = AsyncMock()
                
                # Delete by ID
                response = await client.delete(f"/api/hosts/{host.id}")
        
        assert response.status_code == 200


class TestSyncHostsNoGroups:
    """Tests pour sync avec hôtes sans groupes."""

    async def test_sync_hosts_no_groups(self, client: AsyncClient):
        """Synchronisation d'hôtes sans groupes."""
        with patch("app.routes.hosts.ansible_service") as mock_ansible:
            from app.schemas.host_api import AnsibleInventoryHost
            mock_ansible.invalidate_cache = MagicMock()
            mock_ansible.get_hosts_from_inventory.return_value = [
                AnsibleInventoryHost(
                    name="nogroup.local",
                    ansible_host="10.0.0.50",
                    group="ungrouped",
                    groups=[],  # No groups
                    vars={}
                ),
            ]
            
            with patch("app.routes.hosts.ws_manager") as mock_ws:
                mock_ws.broadcast = AsyncMock()
                
                response = await client.post("/api/hosts/sync")
        
        assert response.status_code == 200
        data = response.json()
        assert data["created"] == 1