"""Red tests for native Ollama adapter (_send_llama_native + ollama_chat).

When _llama_base_url points at localhost/127.0.0.1 (Ollama default), _send_llama
should route to a native adapter that POSTs to /api/chat (NOT the OpenAI-compat
/v1/chat/completions endpoint). The native adapter supports Ollama's vendor-
specific fields: think, images, thinking.

This file is t4_2 (red phase) of qwen_llama_grok_followup_20260611 Phase 4.
"""
from unittest.mock import MagicMock, patch
import pytest
from src import ai_client

@pytest.fixture(autouse=True)
def _reset_llama_state():
 if hasattr(ai_client, '_llama_client'):
  ai_client._llama_client = None
 if hasattr(ai_client, '_llama_history'):
  ai_client._llama_history = []
 if hasattr(ai_client, '_llama_base_url'):
  ai_client._llama_base_url = "http://localhost:11434/v1"
 if hasattr(ai_client, '_llama_api_key'):
  ai_client._llama_api_key = "ollama"
 yield

def _mock_requests_with(post_response: MagicMock):
 """Return a context manager that patches _require_warmed('requests') with a mock whose .post returns the given response."""
 mock_requests = MagicMock()
 mock_requests.post.return_value = post_response
 return patch("src.ai_client._require_warmed", return_value=mock_requests)

def test_ollama_chat_posts_to_native_api_chat_endpoint() -> None:
 """ollama_chat hits /api/chat (not /v1/chat/completions) and returns parsed JSON."""
 mock_response = MagicMock()
 mock_response.json.return_value = {
  "message": {"role": "assistant", "content": "ok"},
  "done": True,
 }
 with _mock_requests_with(mock_response) as warm:
  result = ai_client.ollama_chat(model="llama3.2:3b", messages=[{"role": "user", "content": "hi"}])
  assert result["message"]["content"] == "ok"
  post = warm.return_value.post
  called_url = post.call_args.args[0]
  assert called_url == "http://localhost:11434/api/chat"
  payload = post.call_args.kwargs["json"]
  assert payload["model"] == "llama3.2:3b"
  assert payload["stream"] is False
  assert payload["messages"] == [{"role": "user", "content": "hi"}]

def test_ollama_chat_includes_think_param_when_set() -> None:
 """Ollama native adapter should set the 'think' field in the payload."""
 mock_response = MagicMock()
 mock_response.json.return_value = {"message": {"content": "ok"}, "done": True}
 with _mock_requests_with(mock_response) as warm:
  ai_client.ollama_chat(model="qwen3:8b", messages=[{"role": "user", "content": "x"}], think="high")
  payload = warm.return_value.post.call_args.kwargs["json"]
  assert payload["think"] == "high"

def test_ollama_chat_includes_images_when_provided() -> None:
 """Ollama native adapter should include images in the payload (base64 strings)."""
 mock_response = MagicMock()
 mock_response.json.return_value = {"message": {"content": "i see a cat"}, "done": True}
 with _mock_requests_with(mock_response) as warm:
  ai_client.ollama_chat(
   model="llama3.2-vision:11b",
   messages=[{"role": "user", "content": "describe this"}],
   images=["iVBOR..."],
  )
  payload = warm.return_value.post.call_args.kwargs["json"]
  assert payload["images"] == ["iVBOR..."]

def test_send_llama_native_calls_ollama_chat_when_localhost() -> None:
 """_send_llama_native wraps ollama_chat and returns the message content."""
 ai_client.set_provider("llama", "llama-3.2-3b-preview")
 ai_client._llama_base_url = "http://localhost:11434/v1"
 mock_response = MagicMock()
 mock_response.json.return_value = {
  "message": {"role": "assistant", "content": "hi from native ollama"},
  "done": True,
 }
 with _mock_requests_with(mock_response):
  result = ai_client._send_llama_native("system", "user", ".", None, "", False, None, None, None)
  assert "hi from native ollama" in result

def test_send_llama_native_preserves_thinking_field() -> None:
 """Ollama's 'thinking' field should be captured and rendered in the output."""
 ai_client.set_provider("llama", "qwen3:8b")
 ai_client._llama_base_url = "http://localhost:11434/v1"
 mock_response = MagicMock()
 mock_response.json.return_value = {
  "message": {"role": "assistant", "content": "answer", "thinking": "I thought about it"},
  "done": True,
 }
 with _mock_requests_with(mock_response):
  result = ai_client._send_llama_native("system", "user", ".", None, "", False, None, None, None)
  assert "I thought about it" in result
  assert "answer" in result

def test_send_llama_routes_to_native_when_localhost() -> None:
 """The dispatcher in _send_llama must route localhost/127.0.0.1 to _send_llama_native."""
 ai_client.set_provider("llama", "llama-3.2-3b-preview")
 ai_client._llama_base_url = "http://localhost:11434/v1"
 mock_response = MagicMock()
 mock_response.json.return_value = {
  "message": {"role": "assistant", "content": "via native"},
  "done": True,
 }
 with _mock_requests_with(mock_response), \
      patch("src.ai_client._ensure_llama_client") as ensure:
  result = ai_client._send_llama("system", "user", ".", None, "", False, None, None, None)
  assert "via native" in result
  assert not ensure.called, "_send_llama should NOT instantiate the openai client for native backend"

def test_send_llama_keeps_openai_path_for_non_local() -> None:
 """_send_llama must NOT route to native for non-localhost URLs (custom server, OpenRouter)."""
 ai_client.set_provider("llama", "llama-3.1-70b-versatile")
 ai_client._llama_base_url = "https://openrouter.ai/api/v1"
 mock_client = MagicMock()
 mock_client.chat.completions.create.return_value = MagicMock(
  choices=[MagicMock(message=MagicMock(content="via openrouter", tool_calls=[]))],
  usage=MagicMock(prompt_tokens=5, completion_tokens=3),
 )
 with patch("src.ai_client._ensure_llama_client", return_value=mock_client) as ensure, \
      _mock_requests_with(MagicMock(json=MagicMock(return_value={}))) as warm:
  result = ai_client._send_llama("system", "user", ".", None, "", False, None, None, None)
  assert "via openrouter" in result
  assert ensure.called
  assert not warm.return_value.post.called, "non-local backend must NOT hit Ollama's /api/chat"