import json
import numpy as np
import sys
from tqdm import tqdm 
import argparse

parser = argparse.ArgumentParser(description='viz1090 SVG Map Converter')
parser.add_argument("--resolution", default=250, type=int, help="downsample resolution")
parser.add_argument("file", nargs="+", help="filename")

args = parser.parse_args()

if(len(args.file) == 0):
	print("No input filename given")
	exit()

bin_file = open("mapdata.bin", "wb")

outlist = []

resolution = args.resolution

for file in args.file:
	with open(file, "r") as read_file:
	    data = json.load(read_file)



	print("Reading points")
	for i in tqdm(range(len(data['features']))):


		if(data['features'][i]['geometry']['type'] == 'LineString'):
			prevx = 0
			prevy = 0

			temp = []

			for currentPoint in data['features'][i]['geometry']['coordinates']:

				currentx = float(int(resolution * float(currentPoint[0]))) / resolution		
				currenty = float(int(resolution * float(currentPoint[1]))) / resolution

				if(currentx != prevx or currenty != prevy):
					temp.extend([currentx,currenty])

				prevx = currentx
				prevy = currenty
			temp.extend(["0","0"])
		else:
			prevx = 0
			prevy = 0

			temp = []

			for currentLine in data['features'][i]['geometry']['coordinates']:
				for currentPoint in currentLine:
						
					currentx = float(int(resolution * float(currentPoint[0]))) / resolution		
					currenty = float(int(resolution * float(currentPoint[1]))) / resolution

					if(currentx != prevx or currenty != prevy):
						temp.extend([currentx,currenty])

					prevx = currentx
					prevy = currenty

				temp.extend(["0","0"])


		outlist.extend(temp)

np.asarray(outlist).astype(np.single).tofile(bin_file)
bin_file.close()

print("Wrote %d points" % (len(outlist) / 2))