"""Tests for the Arbetsformedlingen connector.

Uses a recorded JSON fixture (no live network). The fixture is loaded
into an httpx.MockTransport that returns the recorded response.
"""

from __future__ import annotations

import json
from pathlib import Path

import httpx
import pytest

from connectors.arbetsformedlingen import ArbetsformedlingenConnector
from connectors.models import SearchQuery

FIXTURES_DIR = Path(__file__).parent / "fixtures"


def _load_fixture(name: str) -> str:
    """Load a fixture file as raw text."""
    return (FIXTURES_DIR / name).read_text(encoding="utf-8")


def _make_client(response_body: str, status_code: int = 200) -> httpx.Client:
    """Create an httpx.Client with a mock transport returning the fixture."""
    def handler(request: httpx.Request) -> httpx.Response:
        return httpx.Response(status_code, content=response_body, headers={
            "content-type": "application/json",
        })
    transport = httpx.MockTransport(handler)
    return httpx.Client(transport=transport)


class TestArbetsformedlingenMapping:
    """Test field mapping from AF API response to RawPosting."""

    def test_basic_mapping(self):
        """Test that API fields map correctly to RawPosting fields."""
        fixture = _load_fixture("af_search_response.json")
        client = _make_client(fixture)
        connector = ArbetsformedlingenConnector(client=client)
        results = connector.fetch(SearchQuery(query="python", limit=3))

        assert len(results) == 3

        # First hit
        first = results[0]
        assert first.source == "arbetsformedlingen"
        assert first.external_id == "12345678901"
        assert first.title == "Senior Python Developer"
        assert first.company == "Tech Innovators AB"
        assert first.url == "https://arbetsformedlingen.se/platsbanken/annonser/12345678901"
        assert "FastAPI" in first.description
        assert first.location == "Malmo"
        # raw should contain the original hit
        assert first.raw["id"] == "12345678901"

    def test_swedish_text_preserved(self):
        """Test that Swedish characters (a, a, o) are preserved."""
        fixture = _load_fixture("af_search_response.json")
        client = _make_client(fixture)
        connector = ArbetsformedlingenConnector(client=client)
        results = connector.fetch(SearchQuery(query="utvecklare", limit=3))

        second = results[1]
        assert second.title == "Fullstack Utvecklare"
        assert "Nordic Solutions AB" in second.company
        assert "soker" in second.description
        assert "miljo" in second.description

    def test_missing_description_field(self):
        """Test graceful handling when description is missing."""
        fixture_data = {
            "hits": [
                {
                    "id": "999",
                    "headline": "No Description Job",
                    "employer": {"name": "Empty Corp"},
                    "webpage_url": "https://example.com/job/999",
                }
            ]
        }
        client = _make_client(json.dumps(fixture_data))
        connector = ArbetsformedlingenConnector(client=client)
        results = connector.fetch(SearchQuery(query="test", limit=1))

        assert len(results) == 1
        assert results[0].description == ""
        assert results[0].title == "No Description Job"
        assert results[0].company == "Empty Corp"

    def test_missing_employer_name(self):
        """Test graceful handling when employer name is missing."""
        fixture_data = {
            "hits": [
                {
                    "id": "888",
                    "headline": "Mystery Job",
                    "webpage_url": "https://example.com/job/888",
                    "description": {"text": "A job with no employer name."},
                }
            ]
        }
        client = _make_client(json.dumps(fixture_data))
        connector = ArbetsformedlingenConnector(client=client)
        results = connector.fetch(SearchQuery(query="test", limit=1))

        assert len(results) == 1
        assert results[0].company == ""

    def test_empty_hits(self):
        """Test handling of an empty results list."""
        fixture_data = {"hits": [], "total": {"value": 0, "relation": "eq"}}
        client = _make_client(json.dumps(fixture_data))
        connector = ArbetsformedlingenConnector(client=client)
        results = connector.fetch(SearchQuery(query="nonexistent", limit=10))

        assert results == []

    def test_region_param_passed(self):
        """Test that region parameter is mapped and sent to the API."""
        fixture = _load_fixture("af_search_response.json")
        captured_params: dict = {}

        def handler(request: httpx.Request) -> httpx.Response:
            captured_params.update(dict(request.url.params))
            return httpx.Response(200, content=fixture, headers={
                "content-type": "application/json",
            })

        transport = httpx.MockTransport(handler)
        client = httpx.Client(transport=transport)
        connector = ArbetsformedlingenConnector(client=client)
        connector.fetch(SearchQuery(query="dev", region="malmo"))

        assert captured_params.get("q") == "dev"
        assert captured_params.get("region") == "Skane lan"

    def test_limit_param_passed(self):
        """Test that limit parameter is sent to the API."""
        fixture = _load_fixture("af_search_response.json")
        captured_params: dict = {}

        def handler(request: httpx.Request) -> httpx.Response:
            captured_params.update(dict(request.url.params))
            return httpx.Response(200, content=fixture, headers={
                "content-type": "application/json",
            })

        transport = httpx.MockTransport(handler)
        client = httpx.Client(transport=transport)
        connector = ArbetsformedlingenConnector(client=client)
        connector.fetch(SearchQuery(query="dev", limit=50))

        assert captured_params.get("limit") == "50"

    def test_workplace_address_municipality_fallback(self):
        """Test that municipality is used when city is missing."""
        fixture_data = {
            "hits": [
                {
                    "id": "777",
                    "headline": "Rural Job",
                    "employer": {"name": "Rural Corp"},
                    "webpage_url": "https://example.com/job/777",
                    "description": {"text": "Work in the countryside."},
                    "workplace_address": {
                        "municipality": "Helsingborg",
                        "country": "Sverige",
                    },
                }
            ]
        }
        client = _make_client(json.dumps(fixture_data))
        connector = ArbetsformedlingenConnector(client=client)
        results = connector.fetch(SearchQuery(query="test", limit=1))

        assert results[0].location == "Helsingborg"

    def test_raw_preserves_original_hit(self):
        """Test that the raw field preserves the full original hit data."""
        fixture = _load_fixture("af_search_response.json")
        client = _make_client(fixture)
        connector = ArbetsformedlingenConnector(client=client)
        results = connector.fetch(SearchQuery(query="dev", limit=3))

        third = results[2]
        assert third.raw["occupation"]["label"] == "DevOps-ingenjor"
        assert third.raw["publication_date"] == "2026-07-30T09:00:00+02:00"