"""Tests for the JSON-envelope extractor and the reviewer agent.

The two together replaced the regex `clean_summary` + `looks_like_leakage`
scaffolding that used to live in indicator_summary_job. The extractor is
pure-function so it's covered exhaustively; the reviewer makes an LLM
call and is exercised via the httpx MockTransport that the other
openrouter tests use."""
from __future__ import annotations

import httpx
import pytest

from app.jobs.indicator_summary_job import _extract_read
from app.services import openrouter as ot
from app.services.output_review import review_read


# ---------------------------------------------------------------------------
# _extract_read — JSON envelope handling
# ---------------------------------------------------------------------------


def test_extract_read_returns_trimmed_field():
    raw = '{"read": "  The market is pricing growth.  "}'
    assert _extract_read(raw) == "The market is pricing growth."


def test_extract_read_returns_none_on_invalid_json():
    assert _extract_read("not json") is None
    assert _extract_read("{bad}") is None
    assert _extract_read("") is None


def test_extract_read_returns_none_when_field_missing():
    assert _extract_read('{"other": "x"}') is None


def test_extract_read_returns_none_when_field_not_string():
    assert _extract_read('{"read": 42}') is None
    assert _extract_read('{"read": null}') is None
    assert _extract_read('{"read": ["a","b"]}') is None


def test_extract_read_returns_none_when_field_empty():
    assert _extract_read('{"read": ""}') is None
    assert _extract_read('{"read": "   "}') is None


def test_extract_read_returns_none_when_envelope_not_object():
    # A bare string or array is valid JSON but not the expected shape.
    assert _extract_read('"just a string"') is None
    assert _extract_read('["a", "b"]') is None


# ---------------------------------------------------------------------------
# review_read — judges candidate read via a second LLM call
# ---------------------------------------------------------------------------


def _mock_post(handler):
    return httpx.MockTransport(handler)


def _configure(monkeypatch):
    """Minimal env so call_llm believes a provider is configured.
    Both review_read (which pins to OpenRouter for a non-thinking model)
    and the openrouter module itself read get_settings, so we patch
    both module-level references."""
    import app.services.output_review as orr
    settings = type("S", (), {
        "LLM_PROVIDER": "deepseek", "LLM_FALLBACK": "",
        "DEEPSEEK_API_KEY": "sk-d", "OPENROUTER_API_KEY": "sk-or",
        "DEEPSEEK_URL": "https://x/deepseek", "DEEPSEEK_MODEL": "deepseek-v4-flash",
        "OPENROUTER_URL": "https://x/or",      "OPENROUTER_MODEL": "deepseek/deepseek-v4-flash",
        "REVIEWER_MODEL": "anthropic/claude-haiku-4.5",
    })()
    monkeypatch.setattr(ot, "get_settings", lambda: settings)
    monkeypatch.setattr(orr, "get_settings", lambda: settings)


@pytest.mark.asyncio
async def test_review_clean_verdict(monkeypatch):
    _configure(monkeypatch)
    def handler(_req):
        return httpx.Response(200, json={
            "choices": [{"message": {"content": '{"clean": true, "reason": "ok"}'},
                         "finish_reason": "stop"}],
            "usage": {"prompt_tokens": 50, "completion_tokens": 12, "cost": 0.00007},
        })
    async with httpx.AsyncClient(transport=_mock_post(handler)) as client:
        v = await review_read(client, "Markets are pricing tighter policy.")
    assert v.clean is True
    assert v.cost_usd == 0.00007


@pytest.mark.asyncio
async def test_review_unclean_verdict(monkeypatch):
    _configure(monkeypatch)
    def handler(_req):
        return httpx.Response(200, json={
            "choices": [{"message": {"content":
                         '{"clean": false, "reason": "chain of thought"}'},
                         "finish_reason": "stop"}],
            "usage": {"prompt_tokens": 50, "completion_tokens": 14, "cost": 0.00009},
        })
    async with httpx.AsyncClient(transport=_mock_post(handler)) as client:
        v = await review_read(client, "Let's see, is it X? Actually Y?")
    assert v.clean is False
    assert "chain of thought" in v.reason


@pytest.mark.asyncio
async def test_review_failsafe_on_malformed_json(monkeypatch):
    """Reviewer returned prose instead of JSON → conservative reject."""
    _configure(monkeypatch)
    def handler(_req):
        return httpx.Response(200, json={
            "choices": [{"message": {"content": "yes it looks clean"},
                         "finish_reason": "stop"}],
            "usage": {"prompt_tokens": 50, "completion_tokens": 6},
        })
    async with httpx.AsyncClient(transport=_mock_post(handler)) as client:
        v = await review_read(client, "Some candidate.")
    assert v.clean is False
    assert "non-JSON" in v.reason


@pytest.mark.asyncio
async def test_review_failsafe_on_missing_clean_field(monkeypatch):
    _configure(monkeypatch)
    def handler(_req):
        return httpx.Response(200, json={
            "choices": [{"message": {"content": '{"reason": "no field"}'},
                         "finish_reason": "stop"}],
            "usage": {"prompt_tokens": 50, "completion_tokens": 6},
        })
    async with httpx.AsyncClient(transport=_mock_post(handler)) as client:
        v = await review_read(client, "Some candidate.")
    assert v.clean is False


@pytest.mark.asyncio
async def test_review_failsafe_on_empty_candidate(monkeypatch):
    """No LLM call should fire if the candidate is empty."""
    _configure(monkeypatch)
    calls = []
    def handler(_req):
        calls.append(1)
        return httpx.Response(500, json={"error": "should not be called"})
    async with httpx.AsyncClient(transport=_mock_post(handler)) as client:
        v = await review_read(client, "   ")
    assert v.clean is False
    assert calls == []