import importlib
import os
import sys
from pathlib import Path

from fastapi.testclient import TestClient


ROOT = Path(__file__).resolve().parents[1]
if str(ROOT) not in sys.path:
    sys.path.insert(0, str(ROOT))


def load_app_module(monkeypatch):
    monkeypatch.setenv("AI_SERVICE_SKIP_MODEL_LOAD", "1")
    monkeypatch.delenv("OLLAMA_MODEL", raising=False)
    if "app" in sys.modules:
        del sys.modules["app"]
    module = importlib.import_module("app")
    return importlib.reload(module)


def test_health_reports_runtime_without_ollama(monkeypatch):
    module = load_app_module(monkeypatch)
    client = TestClient(module.app)

    response = client.get("/health")

    assert response.status_code == 200
    payload = response.json()
    assert payload["ok"] is True
    assert payload["device"] == "cpu"
    assert payload["ollama_configured"] is False
    assert payload["ollama_model"] is None
    assert payload["ollama_installed_models"] == []
    assert payload["ollama_loaded_models"] == []


def test_classify_block_returns_structured_json(monkeypatch):
    module = load_app_module(monkeypatch)

    def fake_generate_json(prompt: str):
        assert "Senior Platform Engineer" in prompt
        return {
            "section": "Work Experience",
            "confidence": 0.91,
            "reason": "job block",
            "title": "Senior Platform Engineer",
            "company": "Atlas Systems",
            "location": "Oslo",
            "start": "2019",
            "end": "Present",
            "bullets": ["Built event-driven APIs and migration tooling."],
            "summary": [],
            "skills": ["Python", "SQL"],
        }

    monkeypatch.setattr(module, "_ollama_generate_json", fake_generate_json)
    client = TestClient(module.app)

    response = client.post("/cv/classify-block", json={"block": "Senior Platform Engineer at Atlas Systems, Oslo, 2019 - Present. Built event-driven APIs and migration tooling."})

    assert response.status_code == 200
    payload = response.json()
    assert payload["section"] == "Work Experience"
    assert payload["title"] == "Senior Platform Engineer"
    assert payload["company"] == "Atlas Systems"
    assert payload["bullets"] == ["Built event-driven APIs and migration tooling."]
    assert payload["summary"] == []
    assert payload["skills"] == ["Python", "SQL"]


def test_classify_block_defaults_missing_section_to_other(monkeypatch):
    module = load_app_module(monkeypatch)
    monkeypatch.setattr(module, "_ollama_generate_json", lambda prompt: {"bullets": []})
    client = TestClient(module.app)

    response = client.post("/cv/classify-block", json={"block": "Miscellaneous profile text"})

    assert response.status_code == 200
    payload = response.json()
    assert payload["section"] == "Other"
    assert payload["bullets"] == []
    assert payload["summary"] == []
    assert payload["skills"] == []