led_karte/draw_map.py

#!/usr/bin/python
import requests
import json
import pickle
import os.path
import svgwrite
import math

URL = "https://directory.spaceapi.io/"
NORTHERNMOST = 55.05
EASTERNMOST = 15.033333
SOUTHERNMOST = 47.270108
WESTERNMOST = 5.866667
threshold = 0.10
YSPAN = NORTHERNMOST - SOUTHERNMOST
XSPAN = EASTERNMOST - WESTERNMOST
locations = {}
doorstati = {}
blacklist = ["Chaostreff Salzburg", "DevLoL", "CCC Basel", "Chaostreff Zürich",
             "ChaosStuff", "Level2", "Bastli", "Maakplek", "TkkrLab", "Hack42",
             "Hackerspace Nijmegen", "TDvenlo", "ACKspace"]


def dist(n1, n2):
    y = n1[0] - n2[0]
    x = n1[1] - n2[1]
    return math.sqrt(math.pow(x, 2) + math.pow(y, 2))


def conflict(targetlist, node):
    returner = None
    for element in targetlist:
        if dist(node, targetlist[element]) < threshold:
            returner = element
            continue
    return returner


def merge(n1, n2):
    lat = (n1[0] + n2[0]) / 2
    lon = (n1[1] + n2[1]) / 2
    returner = []
    returner.append(lat)
    returner.append(lon)
    returner.append(n1[2] or n2[2])
    return returner


if os.path.isfile('locations.bin'):
    print("using offline data...")
    with open("locations.bin", "rb") as f:
        locations = pickle.load(f)
else:
    print("offline data not available, downloading...,")
    r = requests.get(url=URL)
    data = r.json()
    for space in data:
        spacerequest = None
        try:
            spacerequest = requests.get(url=data[space], timeout=1)
        except requests.exceptions.RequestException as e:  # This is the correct syntax
            continue
        try:
            spacedata = spacerequest.json()
        except json.JSONDecodeError as jde:
            continue
        if "location" in spacedata:
            if "lat" in spacedata["location"]:
                lat = spacedata["location"]["lat"]
                lon = spacedata["location"]["lon"]
                if "state" in spacedata:
                    if "open" in spacedata["state"]:
                        locations[space] = [float(lat), float(
                            lon), spacedata["state"]["open"]]

    for space in locations:
        print(space + " " + str(locations[space]))
    with open("locations.bin", "wb") as f:
        pickle.dump(locations, f, pickle.HIGHEST_PROTOCOL)
print("Removing non-german points...")
german_locations = locations.copy()
for space in locations:
    if locations[space][0] > NORTHERNMOST:
        del german_locations[space]
    elif locations[space][0] < SOUTHERNMOST:
        del german_locations[space]
    elif locations[space][1] < WESTERNMOST:
        del german_locations[space]
    elif locations[space][1] > EASTERNMOST:
        del german_locations[space]

for space in blacklist:
    del german_locations[space]


finallist = {}
while german_locations:
    n1 = next(iter(german_locations))
    conflictnode = conflict(finallist, german_locations[n1])
    if conflictnode == None:
        finallist.update({n1: german_locations[n1]})
        del german_locations[n1]
    else:
        mergenode = merge(german_locations[n1], finallist[conflictnode])
        del german_locations[n1]
        del finallist[conflictnode]
        german_locations.update(
            {"MERGED: " + n1 + " " + conflictnode: mergenode})

for space in finallist:
    #print(space + " " + str(finallist[space][0]) + " " + str(finallist[space][1]))
    print(str(finallist[space][0]) + " " + str(finallist[space][1]) + " {" +
          space + "}  Doorstatus: " + str(finallist[space][2]))

dwg = svgwrite.Drawing('svgwrite-example.svg', profile='tiny')
dwg.add(svgwrite.image.Image(href="Karte_Deutschland.svg", size=(592, 801)))
dwg.add(dwg.circle(center=(0, 0), r=3, fill='black'))
for space in finallist:
    ypoint = (801 - (((finallist[space][0] - SOUTHERNMOST) / YSPAN) * 801))
    xpoint = ((finallist[space][1] - WESTERNMOST) / XSPAN) * 592
    if finallist[space][2]:
        dwg.add(dwg.circle(center=(xpoint, ypoint), r=5, fill='green'))
    else:
        dwg.add(dwg.circle(center=(xpoint, ypoint), r=5, fill='green'))
dwg.save()