import json

import algorithms
import store
from lib import run_server, get, post, read_html


nodes = None
grid = None


@get('/')
def index():
    global nodes
    global grid
    nodes, grid = store.extract_osm_nodes("university.osm")
    return read_html('templates/index.html')


@post('/shortest-path')
def shortest_path(body):
    body = json.loads(body)
    source_id = algorithms.get_closest_node_id(nodes, store.Node(-1, body['lat1'], body['lng1']))
    target_id = algorithms.get_closest_node_id(nodes, store.Node(-1, body['lat2'], body['lng2']))

    path = algorithms.find_shortest_path(nodes, source_id, target_id)
    print(path)
    response = {"path": [(nodes[node].lat, nodes[node].lng) for node in path]}

    return json.dumps(response)


run_server()