"""Tests for LLM extraction — respx mocks the llama-cpp /completion endpoint."""
from __future__ import annotations

import json
from datetime import date
from decimal import Decimal

import httpx
import pytest
import respx

from fire_planner.examples.llm_extract import (
    extract_with_fallback,
    extract_with_qwen,
    to_gbp,
)
from fire_planner.examples.models import RawPost

LLAMA_URL = "http://llama-cpp.llama-cpp.svc.cluster.local:8000/v1/chat/completions"
CLAUDE_URL = "http://claude-agent-service.claude-agent.svc.cluster.local:8080/v1/chat/completions"


def _post() -> RawPost:
    return RawPost(
        reddit_id="a1",
        source_sub="ExpatFIRE",
        url="u",
        title="FIRE'd at 38 — Manila",
        body="Net worth $1.2M, living in Manila with family of 3, retired last year.",
        created_at=date(2026, 1, 1),
    )


@respx.mock
@pytest.mark.asyncio
async def test_extract_with_qwen_parses_json_response() -> None:
    payload = {
        "country": "Philippines",
        "city": "Manila",
        "portfolio_native": 1200000,
        "annual_exp_native": 18000,
        "raw_currency": "USD",
        "age": 38,
        "family_size": 3,
        "fi_status": "FIRE",
        "is_retired": True,
        "confidence": 0.85,
    }
    respx.post(LLAMA_URL).respond(
        200,
        json={"choices": [{"message": {"content": json.dumps(payload)}}]},
    )

    async with httpx.AsyncClient() as client:
        out = await extract_with_qwen(_post(), llama_url=LLAMA_URL, client=client)

    assert out is not None
    assert out.country == "Philippines"
    assert out.portfolio_native == Decimal("1200000")
    assert out.confidence == Decimal("0.85")
    assert out.llm_model == "qwen3-8b"


@respx.mock
@pytest.mark.asyncio
async def test_extract_with_qwen_returns_none_on_unparseable_json() -> None:
    respx.post(LLAMA_URL).respond(
        200,
        json={"choices": [{"message": {"content": "definitely not json"}}]},
    )

    async with httpx.AsyncClient() as client:
        out = await extract_with_qwen(_post(), llama_url=LLAMA_URL, client=client)

    assert out is None


@respx.mock
@pytest.mark.asyncio
async def test_extract_with_qwen_returns_none_on_http_error() -> None:
    respx.post(LLAMA_URL).respond(500)

    async with httpx.AsyncClient() as client:
        out = await extract_with_qwen(_post(), llama_url=LLAMA_URL, client=client)

    assert out is None


@respx.mock
@pytest.mark.asyncio
async def test_fallback_escalates_when_qwen_returns_none() -> None:
    respx.post(LLAMA_URL).respond(500)  # qwen down
    claude_payload = {
        "country": "Philippines",
        "city": "Manila",
        "confidence": 0.95,
    }
    respx.post(CLAUDE_URL).respond(
        200,
        json={"choices": [{"message": {"content": json.dumps(claude_payload)}}]},
    )

    async with httpx.AsyncClient() as client:
        out = await extract_with_fallback(
            _post(),
            llama_url=LLAMA_URL,
            claude_url=CLAUDE_URL,
            claude_bearer="t",
            client=client,
        )

    assert out is not None
    assert out.llm_model == "haiku"
    assert out.country == "Philippines"


@respx.mock
@pytest.mark.asyncio
async def test_fallback_escalates_on_low_confidence() -> None:
    qwen_payload = {"country": None, "confidence": 0.2}
    respx.post(LLAMA_URL).respond(
        200,
        json={"choices": [{"message": {"content": json.dumps(qwen_payload)}}]},
    )
    claude_payload = {"country": "Thailand", "city": "Bangkok", "confidence": 0.9}
    respx.post(CLAUDE_URL).respond(
        200,
        json={"choices": [{"message": {"content": json.dumps(claude_payload)}}]},
    )

    async with httpx.AsyncClient() as client:
        out = await extract_with_fallback(
            _post(),
            llama_url=LLAMA_URL,
            claude_url=CLAUDE_URL,
            claude_bearer="t",
            client=client,
            confidence_threshold=Decimal("0.5"),
        )

    assert out is not None
    assert out.country == "Thailand"
    assert out.llm_model == "haiku"


@respx.mock
@pytest.mark.asyncio
async def test_fallback_keeps_high_confidence_qwen_result() -> None:
    payload = {
        "country": "Philippines",
        "confidence": 0.9,
    }
    respx.post(LLAMA_URL).respond(
        200,
        json={"choices": [{"message": {"content": json.dumps(payload)}}]},
    )
    claude_route = respx.post(CLAUDE_URL).respond(
        200,
        json={"choices": [{"message": {"content": "{}"}}]},
    )

    async with httpx.AsyncClient() as client:
        out = await extract_with_fallback(
            _post(),
            llama_url=LLAMA_URL,
            claude_url=CLAUDE_URL,
            claude_bearer="t",
            client=client,
            confidence_threshold=Decimal("0.5"),
        )

    assert out is not None
    assert out.llm_model == "qwen3-8b"
    assert claude_route.called is False  # high-confidence qwen → claude not hit


def test_to_gbp_converts_usd() -> None:
    rates = {"GBP": Decimal("1"), "USD": Decimal("0.80")}
    assert to_gbp(Decimal("100"), "USD", rates) == Decimal("80.00")


def test_to_gbp_passes_through_gbp() -> None:
    assert to_gbp(Decimal("100"), "GBP", {"GBP": Decimal("1")}) == Decimal("100.00")


def test_to_gbp_returns_none_for_unknown_currency() -> None:
    assert to_gbp(Decimal("100"), "XYZ", {"GBP": Decimal("1"), "USD": Decimal("0.8")}) is None


def test_to_gbp_returns_none_for_none_amount() -> None:
    assert to_gbp(None, "USD", {"USD": Decimal("0.8")}) is None