#!/usr/bin/env python3
import json
import os
import struct
import subprocess
import sys

def send(msg):
    data = json.dumps(msg).encode('utf-8')
    sys.stdout.buffer.write(struct.pack('I', len(data)))
    sys.stdout.buffer.write(data)
    sys.stdout.buffer.flush()

def read():
    raw = sys.stdin.buffer.read(4)
    if len(raw) == 0:
        return None
    length = struct.unpack('I', raw)[0]
    return json.loads(sys.stdin.buffer.read(length).decode('utf-8'))

def get_accent():
    try:
        helper = os.path.join(os.path.dirname(__file__), '..', 'getaccent')
        color = subprocess.check_output([helper], stderr=subprocess.DEVNULL).decode().strip()
        if color:
            return color
    except Exception:
        pass
    return '#000000'

while True:
    msg = read()
    if msg is None:
        break
    if msg.get('query') == 'color':
        send({'color': get_accent()})