import json

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


nodes = None


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


@get('/show-area')
def show_area():
    rect = dict()
    for (k, node) in enumerate(store.select_nodes_in_rectangle(nodes, 58.3984, 58.3990, 15.5733, 15.576)):
        rect[node.id] = node.coord_tuple()
    return json.dumps(rect)


@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']))

    start = time.time()
    astar = algorithms.find_shortest_path_astar(nodes,
                                                source_id,
                                                target_id)
    stop = time.time()
    print(f"A*   {stop-start:.4f}s  {algorithms.path_length(nodes, astar)}")

    start = time.time()
    dijkstra = algorithms.find_shortest_path_dijkstra(nodes,
                                                      source_id,
                                                      target_id)
    stop = time.time()
    print(f"Dij  {stop-start:.4f}s  {algorithms.path_length(nodes, dijkstra)}")

    response = {"path": [(nodes[node].lat, nodes[node].lng) for node in astar]}
    return json.dumps(response)


run_server()