import pytest
from copy import deepcopy
from plib import Station, StationError, StationMap


@pytest.fixture
def js1():
    js = {
        "code": "abkn",
        "height": 219.23325751908123,
        "status": "new",
        "location": {
            "lat": 0.0,
            "lon": 15.5
        },
        "xyz": [
            -90768.799,
            3777267.336,
            5121588.168
        ]
    }

    return js


@pytest.fixture
def js2():
    js = {
        "code": "abkn",
        "height": 219.23325751908123,
        "status": "new",
        "location": {
            "lat": 0.0,
            "lon": 0.0
        },
        "xyz": [
            -90768.799,
            3777267.336,
            5121588.168
        ]
    }
    return js


@pytest.fixture
def json_data():
    text = [
        {
            "code": "akya",
            "height": 330.27589765004814,
            "status": "new",
            "location": {
                "lat": 0.0,
                "lon": 0.0
            },
            "xyz": [
                2078592.977,
                3354438.194,
                4994390.812
            ]
        },
        {
            "code": "alek",
            "height": 174.47401913441718,
            "location": {
                "lat": 10.0,
                "lon": 0.0
            },
            "status": "new",
            "xyz": [
                2959560.1322,
                2236904.702,
                5171064.6737
            ]
        },
        {
            "code": "abdl",
            "height": 86.10842919163406,
            "status": "new",
            "location": {
                "lat": 15.5,
                "lon": 15.5
            },
            "xyz": [
                3025653.429,
                2742460.808,
                4883170.747
            ]
        }
    ]
    return text


class TestStation:
    def test_creation(self, js1):
        try:
            Station(**js1)
        except Exception as e:
            pytest.fail(f"Failed with exception  '{type(e)} - {e}'")

        for field in ["code", "height", "status", "location"]:
            js_copy = deepcopy(js1)
            del js1["location"]
            with pytest.raises(StationError):
                Station(**js1)

    def test_manual_creator(self):
        st = Station()

    def test_distance_to(self, js1, js2):
        s1 = Station(**js1)
        s2 = Station(**js2)
        assert s1.distance_to(s2) == 15.5


class TestStationMap:
    def test_creation(self, js1, js2):
        st1 = Station(**js1)
        st2 = Station(**js2)
        stations = StationMap([st1, st2])
        assert stations["abdl"] == st1

    def test_load_from_json(self, json_data):
        stations = StationMap.from_json(json_data)
        assert len(stations) == 3
        names = list(stations)

        import json
        js = json.loads(json_data)
        names_js = [item["code"] for item in js]
        assert names == names_js

    def test_save_to_json(self, json_data):
        text = StationMap.from_json(json_data).to_json()
        assert text == json_data

    def test_nearest_station(self, json_data):
        stations = StationMap.from_json(json_data)
        assert stations.nearest("abdl").code == "alek"