{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [],
   "source": [
    "import json\n",
    "import os\n",
    "\n",
    "\n",
    "class DST():\n",
    "    def __init__(self):\n",
    "        self.state = json.load(open('dictionary.json'))\n",
    "\n",
    "    def update(self, user_act=None):\n",
    "        for intent, domain, slot, value in user_act:\n",
    "            domain = domain.lower()\n",
    "            intent = intent.lower()\n",
    "            slot = slot.lower()\n",
    "            \n",
    "            if domain not in self.state['belief_state']:\n",
    "                continue\n",
    "\n",
    "            if intent == 'inform':\n",
    "                if slot == 'none' or slot == '':\n",
    "                    continue\n",
    "\n",
    "                domain_dic = self.state['belief_state'][domain]\n",
    "\n",
    "                if slot in domain_dic:\n",
    "                    self.state['belief_state'][domain][slot] = value\n",
    "\n",
    "            elif intent == 'request':\n",
    "                if domain not in self.state['request_state']:\n",
    "                    self.state['request_state'][domain] = {}\n",
    "                if slot not in self.state['request_state'][domain]:\n",
    "                    self.state['request_state'][domain][slot] = 0\n",
    "\n",
    "        return self.state"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {},
   "outputs": [],
   "source": [
    "dst = DST()\n",
    "user_act = [('inform', 'payment', 'type', 'credit card'), ('inform', 'product', 'name', 'iPhone')]\n",
    "state = dst.update(user_act)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "{'payment': {'type': 'credit card', 'amount': '', 'loyalty_card': ''}, 'delivery': {'type': '', 'address': '', 'time': ''}, 'product': {'name': 'iPhone', 'type': '', 'brand': '', 'price': '', 'quantity': '', 'quality': ''}}\n",
      "{}\n"
     ]
    }
   ],
   "source": [
    "print(state['belief_state'])\n",
    "print(state['request_state'])"
   ]
  }
 ],
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