import copy

from content_agent.integrations import query_variant
from content_agent.integrations.query_prompt_config import DEFAULT_PROFILE
from content_agent.integrations.query_variant import (
    MissingQueryVariantClient,
    OpenRouterQueryVariantClient,
    _messages,
    _render_messages,
    query_variant_client_from_env,
)


def test_query_variant_client_empty_env_does_not_read_process_env(monkeypatch):
    monkeypatch.setenv("OPENROUTER_API_KEY", "process-secret")
    monkeypatch.setenv("CONTENT_AGENT_QUERY_LLM_MODEL", "process-model")

    client = query_variant_client_from_env({})

    assert isinstance(client, MissingQueryVariantClient)


def test_query_variant_client_uses_model_fallback_without_exposing_key():
    client = query_variant_client_from_env(
        {
            "OPEN_ROUTER_API_KEY": "test-secret",
            "MODEL": "test-model",
            "OPENROUTER_BASE_URL": "https://example.invalid/api/v1",
            "CONTENT_AGENT_QUERY_LLM_TIMEOUT_SECONDS": "12",
            "CONTENT_AGENT_QUERY_LLM_PROMPT_VERSION": "prompt-test",
        }
    )

    assert isinstance(client, OpenRouterQueryVariantClient)
    assert client.model == "test-model"
    assert client.timeout_seconds == 12
    assert client.prompt_version == "query_variant.v1"


def test_default_render_messages_matches_legacy_messages():
    evidence = {"seed_term": "中医养生", "support": 0.2}

    rendered = _render_messages(DEFAULT_PROFILE, "中医养生", evidence)

    assert rendered == _messages("中医养生", evidence)
    assert str(evidence) in rendered[1]["content"]
    assert '"seed_term"' not in rendered[1]["content"]


def test_openrouter_client_uses_custom_profile(monkeypatch):
    profile = copy.deepcopy(DEFAULT_PROFILE)
    profile.update(
        {
            "prompt_version": "custom-query-v2",
            "system": "custom system",
            "user": "Seed={seed_term}; Evidence={evidence_context}",
            "temperature": 0.9,
            "max_tokens": 23,
        }
    )
    captured = {}

    class FakeResponse:
        def raise_for_status(self):
            return None

        def json(self):
            return {"choices": [{"message": {"content": " 气血食疗 "}}]}

    def fake_post(url, *, headers, json, timeout):
        captured.update({"url": url, "headers": headers, "json": json, "timeout": timeout})
        return FakeResponse()

    monkeypatch.setattr(query_variant.httpx, "post", fake_post)
    client = OpenRouterQueryVariantClient(
        api_key="secret",
        model="model-x",
        base_url="https://example.invalid/api/v1",
        timeout_seconds=7,
        prompt_version="ignored-env-version",
        profile=profile,
    )

    result = client.generate_variant(seed_term="中医养生", evidence_context={"support": 0.2})

    assert result.query == "气血食疗"
    assert result.prompt_version == "custom-query-v2"
    assert captured["timeout"] == 7
    assert captured["json"]["temperature"] == 0.9
    assert captured["json"]["max_tokens"] == 23
    assert captured["json"]["messages"] == [
        {"role": "system", "content": "custom system"},
        {"role": "user", "content": "Seed=中医养生; Evidence={'support': 0.2}"},
    ]