chatbot/modules/state_monitor.py

@@ -13,7 +13,7 @@ class DialogStateMonitor:
                 'delivery_method': {},
                 'payment_method': {},
                 'email': {},
-                'order-complete': False,
+                'order-completed': False,
             },
             act='',
             slot_names=[])
@@ -37,6 +37,11 @@ class DialogStateMonitor:
                          ['item', 'address', 'card_nr', 'delivery_method', 'payment_method', 'email'])
         self.state['belief_state']['order-complete'] = all_filled
 
+    def find_first_empty_slot(self):
+        for slot_name, slot_value in self.state['belief_state'].items():
+            if slot_name != 'order-completed' and self.is_value_empty(slot_value):
+                return slot_name
+
     def update(self, act: UserAct) -> None:
         print(act)
         if act.intent == 'inform':

chatbot/modules/strategy.py

@@ -1,8 +1,24 @@
-import random
+from modules.nlu import UserAct, Slot
+from numpy.random.mtrand import random
 
 
-class DialogueStrategy:
-    @staticmethod
-    def decide_response(state: dict, responses) -> str:
-        intent_responses = responses.get(state['last_intent'], ["Przepraszam, nie rozumiem. Możesz to powtórzyć?"])
-        return random.choice(intent_responses)
+class DialoguePolicy:
+    def __init__(self, dst):
+        self.dialogue_state = dst.state
+
+    def next_action(self):
+        if not self.dialogue_state['belief_state']['order-complete']:
+            user_intent = self.dialogue_state['act']
+            if user_intent == "inform":
+                empty_slot = dst.find_first_empty_slot()
+                return UserAct(intent="request", slots=[Slot(name=empty_slot, value='')])
+            if user_intent == "request":
+                if self.dialogue_state['slot_names']:
+                    slot = random.choice(self.state['slot_names'])
+                    return UserAct(intent="inform", slots=[Slot(name=slot, value='')])
+                else:
+                    return UserAct(intent="inform", slots=[Slot(name='unknown', value='')])
+            if user_intent == "bye":
+                return UserAct(intent="bye", slots=[Slot(name='', value='')])
+        else:
+            return UserAct(intent=  "inform", slots=[Slot(name='confirmation', value='Zamówienie złożono poprawnie.')])