# coding: utf-8
import os
import shutil
import requests
from tkinter import *

HOST_URL   = 'http://localhost/pi/' if os.path.exists('/home/pi/Desktop/dev.update') else 'http://www-ict.dent.agu.ac.jp/pi/'
MANAGER    = 'manager.py'
TARGET_DIR = "/home/pi/agud-pi"

def update(newest_version):
    os.system('rm -f ' + TARGET_DIR + '/' + MANAGER)
    res = requests.get(HOST_URL + MANAGER, timeout=1, stream=True)
    if res.status_code == 200:
        with open(TARGET_DIR + '/' + MANAGER, 'wb') as file:
            res.raw.decode_content = True
            shutil.copyfileobj(res.raw, file)
            cmd = 'python3 ' + TARGET_DIR + '/' + MANAGER + ' ' + HOST_URL + ' ' + newest_version
            os.system('lxterminal -e ' + cmd)
    else:
        pass

if not os.path.isdir(TARGET_DIR):
    os.makedirs(TARGET_DIR)

try:
    res = requests.get(HOST_URL + 'newest_version.txt', timeout=0.5)
    if res.status_code == 200:
        newest_version = res.text
        update(newest_version)
    else:
        pass

except:
    root = Tk()
    root.title('エラー')
    text = Text(root, width=60, height=6)
    text.insert(END, 'エラーが発生しました。\n接続先：' + HOST_URL + '\n')
    text.pack()
    root.mainloop()