from __future__ import annotations

import asyncio
from types import SimpleNamespace
from unittest.mock import AsyncMock, Mock

import pytest

from langbot.pkg.api.http.service.model import _runtime_model_data
from langbot.pkg.api.http.service.provider import ModelProviderService
from langbot.pkg.entity.persistence import model as persistence_model
from langbot.pkg.provider.modelmgr import requester
from langbot.pkg.provider.modelmgr.modelmgr import ModelManager
from langbot.pkg.provider.modelmgr.token import TokenManager
from langbot.pkg.api.http.context import ExecutionContext
from langbot.pkg.workspace.entities import WorkspaceExecutionBinding


def test_runtime_llm_model_data_preserves_uuid_after_update_payload_uuid_removed():
    update_payload = {
        'name': 'Qwen3.5-27B',
        'provider_uuid': 'provider-uuid',
        'abilities': [],
        'extra_args': {},
    }

    runtime_entity = persistence_model.LLMModel(**_runtime_model_data('model-uuid', update_payload))

    assert runtime_entity.uuid == 'model-uuid'
    assert runtime_entity.name == 'Qwen3.5-27B'


def test_runtime_embedding_model_data_preserves_uuid_after_update_payload_uuid_removed():
    update_payload = {
        'name': 'embedding-model',
        'provider_uuid': 'provider-uuid',
        'extra_args': {},
    }

    runtime_entity = persistence_model.EmbeddingModel(**_runtime_model_data('embedding-uuid', update_payload))

    assert runtime_entity.uuid == 'embedding-uuid'
    assert runtime_entity.name == 'embedding-model'


def test_runtime_rerank_model_data_preserves_uuid_after_update_payload_uuid_removed():
    update_payload = {
        'name': 'rerank-model',
        'provider_uuid': 'provider-uuid',
        'extra_args': {},
    }

    runtime_entity = persistence_model.RerankModel(**_runtime_model_data('rerank-uuid', update_payload))

    assert runtime_entity.uuid == 'rerank-uuid'
    assert runtime_entity.name == 'rerank-model'


def test_normalize_space_provider_api_keys_filters_blank_values():
    assert ModelProviderService._normalize_api_keys('space-key') == ['space-key']
    assert ModelProviderService._normalize_api_keys('  trimmed-key  ') == ['trimmed-key']
    assert ModelProviderService._normalize_api_keys('') == []
    assert ModelProviderService._normalize_api_keys('   ') == []
    assert ModelProviderService._normalize_api_keys(None) == []
    assert ModelProviderService._normalize_api_keys([' first-key ', '', 'first-key', 'second-key']) == [
        'first-key',
        'second-key',
    ]


def test_token_manager_filters_blank_and_duplicate_tokens():
    token_mgr = TokenManager('provider-uuid', ['  first-key  ', '', 'first-key', 'second-key', '   '])

    assert token_mgr.tokens == ['first-key', 'second-key']
    assert token_mgr.get_token() == 'first-key'


def test_token_manager_next_token_ignores_empty_token_list():
    token_mgr = TokenManager('provider-uuid', [])

    token_mgr.next_token()

    assert token_mgr.get_token() == ''
    assert token_mgr.using_token_index == 0


@pytest.mark.asyncio
async def test_model_manager_initialize_skips_space_sync_after_timeout():
    ap = SimpleNamespace()
    ap.discover = SimpleNamespace(get_components_by_kind=Mock(return_value=[]))
    ap.instance_config = SimpleNamespace(data={'space': {'models_sync_timeout': 0.01}})
    ap.logger = Mock()
    binding = WorkspaceExecutionBinding(
        instance_uuid='instance-test',
        workspace_uuid='workspace-test',
        placement_generation=1,
        write_fenced=False,
        state='active',
    )
    ap.workspace_service = SimpleNamespace(
        get_local_execution_binding=AsyncMock(return_value=binding),
        get_execution_binding=AsyncMock(return_value=binding),
    )

    mgr = ModelManager(ap)
    mgr.load_models_from_db = AsyncMock()

    async def slow_sync(_context):
        await asyncio.sleep(1)

    mgr.sync_new_models_from_space = AsyncMock(side_effect=slow_sync)

    await mgr.initialize()

    mgr.load_models_from_db.assert_awaited_once()
    mgr.sync_new_models_from_space.assert_awaited_once()
    ap.logger.warning.assert_any_call('LangBot Space model sync timed out after 0.01s, skipping startup sync.')


@pytest.mark.asyncio
async def test_updated_llm_model_immediately_refreshes_runtime_cache():
    from langbot.pkg.api.http.service.model import LLMModelsService

    model_uuid = 'qwen-model-uuid'
    provider_uuid = 'ollama-provider-uuid'
    workspace_uuid = 'workspace-test'
    execution_context = ExecutionContext(
        instance_uuid='instance-test',
        workspace_uuid=workspace_uuid,
        placement_generation=1,
        bot_uuid='bot-uuid',
        pipeline_uuid='pipeline-uuid',
    )

    ap = SimpleNamespace()
    ap.logger = Mock()
    ap.persistence_mgr = SimpleNamespace(execute_async=AsyncMock())
    binding = WorkspaceExecutionBinding(
        instance_uuid='instance-test',
        workspace_uuid=workspace_uuid,
        placement_generation=1,
        write_fenced=False,
        state='active',
    )
    ap.workspace_service = SimpleNamespace(get_execution_binding=AsyncMock(return_value=binding))

    ap.model_mgr = ModelManager(ap)
    runtime_provider = Mock(
        execution_context=execution_context,
        provider_entity=persistence_model.ModelProvider(
            workspace_uuid=workspace_uuid,
            uuid=provider_uuid,
            name='Ollama',
            requester='ollama',
            base_url='http://localhost:11434',
            api_keys=[],
        ),
    )
    cache_key = ('instance-test', workspace_uuid, 1, provider_uuid)
    ap.model_mgr.provider_dict = {cache_key: runtime_provider}
    runtime_model = requester.RuntimeLLMModel(
        execution_context=execution_context,
        model_entity=persistence_model.LLMModel(
            workspace_uuid=workspace_uuid,
            uuid=model_uuid,
            name='old-qwen-name',
            provider_uuid=provider_uuid,
            abilities=[],
            extra_args={},
        ),
        provider=runtime_provider,
    )
    ap.model_mgr.llm_model_dict = {
        ('instance-test', workspace_uuid, 1, model_uuid): runtime_model,
    }

    ap.provider_service = SimpleNamespace(
        get_provider=AsyncMock(return_value={'uuid': provider_uuid, 'workspace_uuid': workspace_uuid})
    )
    model_service = LLMModelsService(ap)
    model_service.get_llm_model = AsyncMock(
        return_value={
            'uuid': model_uuid,
            'workspace_uuid': workspace_uuid,
            'name': 'old-qwen-name',
            'provider_uuid': provider_uuid,
            'abilities': [],
            'context_length': None,
            'extra_args': {},
            'prefered_ranking': 0,
        }
    )
    await model_service.update_llm_model(
        workspace_uuid,
        model_uuid,
        {
            'name': 'Qwen3.5-27B',
            'provider_uuid': provider_uuid,
            'abilities': [],
            'extra_args': {},
        },
    )

    runtime_model = await ap.model_mgr.get_model_by_uuid(execution_context, model_uuid)
    assert runtime_model.model_entity.uuid == model_uuid
    assert runtime_model.model_entity.name == 'Qwen3.5-27B'