#!/usr/bin/env python3

import json
import os
import logging
from types import SimpleNamespace
from huami_token import HuamiAmazfit

class ConfigHandler:
    def __init__(self, args, config_path='./config.json'):
        self.config_path = config_path
        new_config = self.load_config()
        config_change = False
        if args.logfile:
            self.config.logfile = args.logfile
            config_change = True
        if hasattr(self.config, 'logfile'):
            logging.basicConfig(filename=self.config.logfile, level=logging.DEBUG if args.verbose else logging.INFO)
        else:
            logging.basicConfig(level=logging.DEBUG if args.verbose else logging.INFO)

        if not hasattr(self.config, 'credentials'):
            self.config.credentials = SimpleNamespace()
            config_change = True
        if not hasattr(self.config.credentials, 'email'):
            self.config.credentials.email = input('Username/Email: ')
            config_change = True
        if not hasattr(self.config.credentials, 'password'):
            self.config.credentials.password = getpass('Password: ')
            config_change = True
        if args.targets:
            self.config.targets = args.targets
            config_change = True
        elif not args.use_config:
            self.config.targets = []

        if args.target_dir:
            self.config.target_dir = os.path.abspath(args.target_dir)
            config_change = True
        elif not self.config.target_dir:
            self.config.target_dir = ''

        if config_change and (new_config or args.save):
            save_config()

    @property
    def target_dir(self):
        return self.config.target_dir

    @target_dir.setter
    def target_dir(self, value):
        self.config.target_dir = value

    def load_config(self):
        try:
            with open(self.config_path) as config_file:
                self.config = json.load(config_file, object_hook=lambda d: SimpleNamespace(**d))
                return False
        except IOError:
            self.config = SimpleNamespace()
            return True

    def save_config(self):
        log.debug('Saving config')
        with open(self.config_path, 'w') as config_file:
            json.dump(self.config, config_file, default=lambda x: vars(x))

    def configureHuamiDevice(self):
        huamidevice = HuamiAmazfit(email=self.config.credentials.email, password=self.config.credentials.password)
        huamidevice.method = 'amazfit'
        if hasattr(self.config, 'targets') and self.config.targets:
            huamidevice.agps_packs = dict(filter(lambda entry: entry[0] in self.config.targets, huamidevice.AGPS_PACKS.items()))
        return huamidevice