"""Tests for the Ollama integration."""

from unittest.mock import patch

from httpx import ConnectError
import pytest

from homeassistant.components import ollama
from homeassistant.components.ollama.const import DOMAIN
from homeassistant.core import HomeAssistant
from homeassistant.helpers import device_registry as dr, entity_registry as er
from homeassistant.setup import async_setup_component

from . import TEST_OPTIONS, TEST_USER_DATA

from tests.common import MockConfigEntry


@pytest.mark.parametrize(
    ("side_effect", "error"),
    [
        (ConnectError(message="Connect error"), "Connect error"),
        (RuntimeError("Runtime error"), "Runtime error"),
    ],
)
async def test_init_error(
    hass: HomeAssistant,
    mock_config_entry: MockConfigEntry,
    caplog: pytest.LogCaptureFixture,
    side_effect,
    error,
) -> None:
    """Test initialization errors."""
    with patch(
        "ollama.AsyncClient.list",
        side_effect=side_effect,
    ):
        assert await async_setup_component(hass, ollama.DOMAIN, {})
        await hass.async_block_till_done()
        assert error in caplog.text


async def test_migration_from_v1_to_v2(
    hass: HomeAssistant,
    device_registry: dr.DeviceRegistry,
    entity_registry: er.EntityRegistry,
) -> None:
    """Test migration from version 1 to version 2."""
    # Create a v1 config entry with conversation options and an entity
    mock_config_entry = MockConfigEntry(
        domain=DOMAIN,
        data=TEST_USER_DATA,
        options=TEST_OPTIONS,
        version=1,
        title="llama-3.2-8b",
    )
    mock_config_entry.add_to_hass(hass)

    device = device_registry.async_get_or_create(
        config_entry_id=mock_config_entry.entry_id,
        identifiers={(DOMAIN, mock_config_entry.entry_id)},
        name=mock_config_entry.title,
        manufacturer="Ollama",
        model="Ollama",
        entry_type=dr.DeviceEntryType.SERVICE,
    )
    entity = entity_registry.async_get_or_create(
        "conversation",
        DOMAIN,
        mock_config_entry.entry_id,
        config_entry=mock_config_entry,
        device_id=device.id,
        suggested_object_id="llama_3_2_8b",
    )

    # Run migration
    with patch(
        "homeassistant.components.ollama.async_setup_entry",
        return_value=True,
    ):
        await hass.config_entries.async_setup(mock_config_entry.entry_id)

    assert mock_config_entry.version == 2
    assert mock_config_entry.data == TEST_USER_DATA
    assert mock_config_entry.options == {}

    assert len(mock_config_entry.subentries) == 1

    subentry = next(iter(mock_config_entry.subentries.values()))
    assert subentry.unique_id is None
    assert subentry.title == "llama-3.2-8b"
    assert subentry.subentry_type == "conversation"
    assert subentry.data == TEST_OPTIONS

    migrated_entity = entity_registry.async_get(entity.entity_id)
    assert migrated_entity is not None
    assert migrated_entity.config_entry_id == mock_config_entry.entry_id
    assert migrated_entity.config_subentry_id == subentry.subentry_id
    assert migrated_entity.unique_id == subentry.subentry_id

    # Check device migration
    assert not device_registry.async_get_device(
        identifiers={(DOMAIN, mock_config_entry.entry_id)}
    )
    assert (
        migrated_device := device_registry.async_get_device(
            identifiers={(DOMAIN, subentry.subentry_id)}
        )
    )
    assert migrated_device.identifiers == {(DOMAIN, subentry.subentry_id)}
    assert migrated_device.id == device.id


async def test_migration_from_v1_to_v2_with_multiple_urls(
    hass: HomeAssistant,
    device_registry: dr.DeviceRegistry,
    entity_registry: er.EntityRegistry,
) -> None:
    """Test migration from version 1 to version 2 with different URLs."""
    # Create two v1 config entries with different URLs
    mock_config_entry = MockConfigEntry(
        domain=DOMAIN,
        data={"url": "http://localhost:11434", "model": "llama3.2:latest"},
        options=TEST_OPTIONS,
        version=1,
        title="Ollama 1",
    )
    mock_config_entry.add_to_hass(hass)
    mock_config_entry_2 = MockConfigEntry(
        domain=DOMAIN,
        data={"url": "http://localhost:11435", "model": "llama3.2:latest"},
        options=TEST_OPTIONS,
        version=1,
        title="Ollama 2",
    )
    mock_config_entry_2.add_to_hass(hass)

    device = device_registry.async_get_or_create(
        config_entry_id=mock_config_entry.entry_id,
        identifiers={(DOMAIN, mock_config_entry.entry_id)},
        name=mock_config_entry.title,
        manufacturer="Ollama",
        model="Ollama 1",
        entry_type=dr.DeviceEntryType.SERVICE,
    )
    entity_registry.async_get_or_create(
        "conversation",
        DOMAIN,
        mock_config_entry.entry_id,
        config_entry=mock_config_entry,
        device_id=device.id,
        suggested_object_id="ollama_1",
    )

    device_2 = device_registry.async_get_or_create(
        config_entry_id=mock_config_entry_2.entry_id,
        identifiers={(DOMAIN, mock_config_entry_2.entry_id)},
        name=mock_config_entry_2.title,
        manufacturer="Ollama",
        model="Ollama 2",
        entry_type=dr.DeviceEntryType.SERVICE,
    )
    entity_registry.async_get_or_create(
        "conversation",
        DOMAIN,
        mock_config_entry_2.entry_id,
        config_entry=mock_config_entry_2,
        device_id=device_2.id,
        suggested_object_id="ollama_2",
    )

    # Run migration
    with patch(
        "homeassistant.components.ollama.async_setup_entry",
        return_value=True,
    ):
        await hass.config_entries.async_setup(mock_config_entry.entry_id)
        await hass.async_block_till_done()

    entries = hass.config_entries.async_entries(DOMAIN)
    assert len(entries) == 2

    for idx, entry in enumerate(entries):
        assert entry.version == 2
        assert not entry.options
        assert len(entry.subentries) == 1
        subentry = list(entry.subentries.values())[0]
        assert subentry.subentry_type == "conversation"
        assert subentry.data == TEST_OPTIONS
        assert subentry.title == f"Ollama {idx + 1}"

        dev = device_registry.async_get_device(
            identifiers={(DOMAIN, list(entry.subentries.values())[0].subentry_id)}
        )
        assert dev is not None


async def test_migration_from_v1_to_v2_with_same_urls(
    hass: HomeAssistant,
    device_registry: dr.DeviceRegistry,
    entity_registry: er.EntityRegistry,
) -> None:
    """Test migration from version 1 to version 2 with same URLs consolidates entries."""
    # Create two v1 config entries with the same URL
    mock_config_entry = MockConfigEntry(
        domain=DOMAIN,
        data={"url": "http://localhost:11434", "model": "llama3.2:latest"},
        options=TEST_OPTIONS,
        version=1,
        title="Ollama",
    )
    mock_config_entry.add_to_hass(hass)
    mock_config_entry_2 = MockConfigEntry(
        domain=DOMAIN,
        data={"url": "http://localhost:11434", "model": "llama3.2:latest"},  # Same URL
        options=TEST_OPTIONS,
        version=1,
        title="Ollama 2",
    )
    mock_config_entry_2.add_to_hass(hass)

    device = device_registry.async_get_or_create(
        config_entry_id=mock_config_entry.entry_id,
        identifiers={(DOMAIN, mock_config_entry.entry_id)},
        name=mock_config_entry.title,
        manufacturer="Ollama",
        model="Ollama",
        entry_type=dr.DeviceEntryType.SERVICE,
    )
    entity_registry.async_get_or_create(
        "conversation",
        DOMAIN,
        mock_config_entry.entry_id,
        config_entry=mock_config_entry,
        device_id=device.id,
        suggested_object_id="ollama",
    )

    device_2 = device_registry.async_get_or_create(
        config_entry_id=mock_config_entry_2.entry_id,
        identifiers={(DOMAIN, mock_config_entry_2.entry_id)},
        name=mock_config_entry_2.title,
        manufacturer="Ollama",
        model="Ollama",
        entry_type=dr.DeviceEntryType.SERVICE,
    )
    entity_registry.async_get_or_create(
        "conversation",
        DOMAIN,
        mock_config_entry_2.entry_id,
        config_entry=mock_config_entry_2,
        device_id=device_2.id,
        suggested_object_id="ollama_2",
    )

    # Run migration
    with patch(
        "homeassistant.components.ollama.async_setup_entry",
        return_value=True,
    ):
        await hass.config_entries.async_setup(mock_config_entry.entry_id)
        await hass.async_block_till_done()

    # Should have only one entry left (consolidated)
    entries = hass.config_entries.async_entries(DOMAIN)
    assert len(entries) == 1

    entry = entries[0]
    assert entry.version == 2
    assert not entry.options
    assert len(entry.subentries) == 2  # Two subentries from the two original entries

    # Check both subentries exist with correct data
    subentries = list(entry.subentries.values())
    titles = [sub.title for sub in subentries]
    assert "Ollama" in titles
    assert "Ollama 2" in titles

    for subentry in subentries:
        assert subentry.subentry_type == "conversation"
        assert subentry.data == TEST_OPTIONS

        # Check devices were migrated correctly
        dev = device_registry.async_get_device(
            identifiers={(DOMAIN, subentry.subentry_id)}
        )
        assert dev is not None