import os

import pytest
import networkx as nx
import rtree

from evrouting.osm.imports import read_osm, insert_charging_stations
from evrouting.osm.profiles import car
from evrouting.graph_tools import CHARGING_COEFFICIENT_KEY


@pytest.fixture
def graph():
    G = nx.DiGraph()
    G.rtree = rtree.index.Index()

    node_coordinates = [
        (51.7705832, 7.0002595),
        (51.7696529, 6.9568520)
    ]

    for n_id, coordinates in enumerate(node_coordinates):
        lat, lon = coordinates
        # Add two nodes, that exist in osm test map
        G.add_node(n_id, lat=lat, lon=lon)
        G.rtree.insert(n_id, (lon, lat, lon, lat))

    yield G
    del G


def test_read_osm():
    """Just check if it runs. Todo: Delete."""
    G = read_osm(os.path.join(os.path.dirname(__file__), 'static/map.osm'),
                 car)
    assert True

def test_insert_charging_stations_close(graph):
    # Close two node 1
    S = [{"lon": 7.0002593, "lat": 51.7705832, "power": 22.0}]

    graph = insert_charging_stations(graph, S)

    assert graph.nodes[0][CHARGING_COEFFICIENT_KEY] == 22.0
    assert CHARGING_COEFFICIENT_KEY not in graph.nodes[1]


def test_insert_charging_stations_eq(graph):
    # Close exactly at node 1
    S = [{"lon": 7.0002595, "lat": 51.7705832, "power": 22.0}]

    graph = insert_charging_stations(graph, S)

    assert graph.nodes[0][CHARGING_COEFFICIENT_KEY] == 22.0
    assert CHARGING_COEFFICIENT_KEY not in graph.nodes[1]