Update src/streamlit_app.py

src/streamlit_app.py

@@ -1,40 +1,177 @@
-import altair as alt
-import numpy as np
-import pandas as pd
 import streamlit as st
+import random
+import re
 
-"""
-# Welcome to Streamlit!
-
-Edit `/streamlit_app.py` to customize this app to your heart's desire :heart:.
-If you have any questions, checkout our [documentation](https://docs.streamlit.io) and [community
-forums](https://discuss.streamlit.io).
-
-In the meantime, below is an example of what you can do with just a few lines of code:
-"""
-
-num_points = st.slider("Number of points in spiral", 1, 10000, 1100)
-num_turns = st.slider("Number of turns in spiral", 1, 300, 31)
-
-indices = np.linspace(0, 1, num_points)
-theta = 2 * np.pi * num_turns * indices
-radius = indices
-
-x = radius * np.cos(theta)
-y = radius * np.sin(theta)
-
-df = pd.DataFrame({
-    "x": x,
-    "y": y,
-    "idx": indices,
-    "rand": np.random.randn(num_points),
-})
-
-st.altair_chart(alt.Chart(df, height=700, width=700)
-    .mark_point(filled=True)
-    .encode(
-        x=alt.X("x", axis=None),
-        y=alt.Y("y", axis=None),
-        color=alt.Color("idx", legend=None, scale=alt.Scale()),
-        size=alt.Size("rand", legend=None, scale=alt.Scale(range=[1, 150])),
-    ))
+# Configure page
+st.set_page_config(
+    page_title="Nepali Chatbot",
+    page_icon="🇳🇵",
+    layout="centered"
+)
+
+class SimpleNepaliChatbot:
+    def __init__(self):
+        self.english_responses = {
+            "greeting": [
+                "Hello! How are you today?",
+                "Hi there! Nice to meet you!",
+                "Hey! How can I help you?",
+                "Hello! What would you like to talk about?"
+            ],
+            "how_are_you": [
+                "I'm doing great, thank you for asking! How about you?",
+                "I'm fine, thanks! How are things with you?",
+                "I'm well! What brings you here today?"
+            ],
+            "name": [
+                "I'm your friendly Nepali chatbot! You can call me Bot.",
+                "I'm a chatbot designed to chat in Nepali and English!",
+                "My name is NepaliBot. Nice to meet you!"
+            ],
+            "goodbye": [
+                "Goodbye! Have a wonderful day!",
+                "See you later! Take care!",
+                "Bye! It was nice chatting with you!"
+            ],
+            "nepal": [
+                "Nepal is a beautiful country in the Himalayas!",
+                "I love talking about Nepal! What would you like to know?",
+                "Nepal has amazing mountains, culture, and people!"
+            ],
+            "default": [
+                "That's interesting! Tell me more about it.",
+                "I see! What else would you like to talk about?",
+                "Thanks for sharing! How does that make you feel?",
+                "That's a good point. What do you think about it?",
+                "I understand. Can you elaborate on that?"
+            ]
+        }
+        
+        self.nepali_responses = {
+            "greeting": [
+                "नमस्ते! तपाईं कस्तो हुनुहुन्छ?",
+                "नमस्कार! तपाईंलाई भेटेर खुशी लाग्यो!",
+                "हाल कस्तो छ? म कसरी मद्दत गर्न सक्छु?",
+                "नमस्ते! के कुरा गर्न चाहनुहुन्छ?"
+            ],
+            "how_are_you": [
+                "म सञ्चै छु, धन्यवाद! तपाईं कस्तो हुनुहुन्छ?",
+                "म राम्रो छु! तपाईंको हाल कस्तो छ?",
+                "म ठिकै छु! आज के गर्दै हुनुहुन्छ?"
+            ],
+            "name": [
+                "म तपाईंको नेपाली च्याटबोट हुँ! मलाई बोट भन्न सक्नुहुन्छ।",
+                "म एक च्याटबोट हुँ जसले नेपाली र अंग्रेजी दुवैमा कुरा गर्छु!",
+                "मेरो नाम नेपालीबोट हो। तपाईंलाई भेटेर खुशी लाग्यो!"
+            ],
+            "goodbye": [
+                "नमस्कार! राम्रो दिन बिताउनुहोस्!",
+                "फेरि भेटौंला! ख्याल गर्नुहोस्!",
+                "बाइ बाइ! तपाईंसँग कुरा गर्न राम्रो लाग्यो!"
+            ],
+            "nepal": [
+                "नेपाल हिमालयको एक सुन्दर देश हो!",
+                "मलाई नेपालको बारेमा कुरा गर्न मन पर्छ! के जान्न चा���नुहुन्छ?",
+                "नेपालमा अद्भुत पहाडहरू, संस्कृति र मानिसहरू छन्!"
+            ],
+            "default": [
+                "त्यो रोचक छ! मलाई थप बताउनुहोस्।",
+                "बुझे! अरू के कुरा गर्न चाहनुहुन्छ?",
+                "धन्यवाद साझा गर्नुभएकोमा! यसले तपाईंलाई कस्तो लाग्छ?",
+                "राम्रो कुरा हो। तपाईं के सोच्नुहुन्छ?",
+                "बुझें। यसबारे अलि विस्तारमा भन्न सक्नुहुन्छ?"
+            ]
+        }
+
+    def is_nepali_text(self, text):
+        return bool(re.search(r'[\u0900-\u097F]', text))
+
+    def get_response_type(self, message):
+        message_lower = message.lower()
+        
+        # Pattern matching
+        if re.search(r'\b(hello|hi|hey|namaste|namaskar)\b|नमस्ते|नमस्कार|हाल|हलो', message_lower):
+            return "greeting"
+        elif re.search(r'\b(how are you|kasto cha)\b|कस्तो छ|कस्तो हुनुहुन्छ', message_lower):
+            return "how_are_you"
+        elif re.search(r'\b(name|naam|who)\b|नाम|को हो', message_lower):
+            return "name"
+        elif re.search(r'\b(bye|goodbye|jaau)\b|बाइ|जाउँ', message_lower):
+            return "goodbye"
+        elif re.search(r'\b(nepal|nepali)\b|नेपाल', message_lower):
+            return "nepal"
+        else:
+            return "default"
+
+    def generate_response(self, message):
+        if not message.strip():
+            return "Please say something!"
+            
+        is_nepali = self.is_nepali_text(message)
+        response_type = self.get_response_type(message)
+        
+        if is_nepali:
+            responses = self.nepali_responses.get(response_type, self.nepali_responses["default"])
+        else:
+            responses = self.english_responses.get(response_type, self.english_responses["default"])
+        
+        return random.choice(responses)
+
+# Initialize chatbot
+if 'chatbot' not in st.session_state:
+    st.session_state.chatbot = SimpleNepaliChatbot()
+
+if 'messages' not in st.session_state:
+    st.session_state.messages = [
+        {"role": "assistant", "content": "नमस्ते! Hello! I'm your Nepali chatbot. तपाईंलाई कसरी मद्दत गर्न सक्छु?"}
+    ]
+
+# UI
+st.title("🇳🇵 नेपाली च्याटबोट")
+st.markdown("**Simple Nepali Chatbot - नेपालीमा वा अंग्रेजीमा कुराकानी गर्नुहोस्!**")
+
+# Display chat history
+for message in st.session_state.messages:
+    with st.chat_message(message["role"]):
+        st.write(message["content"])
+
+# Input
+if prompt := st.chat_input("यहाँ लेख्नुहोस् / Type here..."):
+    # Add user message
+    st.session_state.messages.append({"role": "user", "content": prompt})
+    with st.chat_message("user"):
+        st.write(prompt)
+    
+    # Generate bot response
+    response = st.session_state.chatbot.generate_response(prompt)
+    st.session_state.messages.append({"role": "assistant", "content": response})
+    with st.chat_message("assistant"):
+        st.write(response)
+
+# Sidebar with examples
+st.sidebar.header("🔄 Try these examples:")
+examples = [
+    "नमस्ते!",
+    "Hello!",
+    "तपाईंको नाम के हो?",
+    "How are you?",
+    "कस्तो छ?",
+    "Tell me about Nepal",
+    "धन्यवाद!"
+]
+
+for example in examples:
+    if st.sidebar.button(example):
+        st.session_state.messages.append({"role": "user", "content": example})
+        response = st.session_state.chatbot.generate_response(example)
+        st.session_state.messages.append({"role": "assistant", "content": response})
+        st.rerun()
+
+if st.sidebar.button("🗑️ Clear Chat"):
+    st.session_state.messages = [
+        {"role": "assistant", "content": "नमस्ते! Hello! I'm your Nepali chatbot. तपाईंलाई कसरी मद्दत गर्न सक्छु?"}
+    ]
+    st.rerun()
+
+st.sidebar.markdown("---")
+st.sidebar.info("This chatbot uses simple pattern matching to respond in Nepali and English.")