app.py

from fastai.text.all import *
from transformers import AutoModelForSequenceClassification, AutoTokenizer, BlenderbotForConditionalGeneration, BlenderbotTokenizer
import torch
import gradio as gr

# Load the medical model
medical_learn = load_learner('model.pkl')

# Medical model configuration
medical_description = "Medical Diagnosis"
medical_categories = ['Allergy', 'Anemia', 'Bronchitis', 'Diabetes', 'Diarrhea', 'Fatigue', 'Flu', 'Malaria', 'Stress']

def classify_medical_text(txt):
    pred, idx, probs = medical_learn.predict(txt)
    return dict(zip(medical_categories, map(float, probs)))

# Load the psychiatric model from Hugging Face
psychiatric_model_name = "nlp4good/psych-search"  # Replace with the appropriate model
psychiatric_tokenizer = AutoTokenizer.from_pretrained(psychiatric_model_name)
psychiatric_model = AutoModelForSequenceClassification.from_pretrained(psychiatric_model_name)

# Psychiatric model configuration
psychiatric_description = "Psychiatric Analysis"
psychiatric_labels = ['Depression', 'Anxiety', 'Bipolar Disorder', 'PTSD', 'OCD', 'Stress', 'Schizophrenia']  # Adjust based on the model

def classify_psychiatric_text(txt):
    inputs = psychiatric_tokenizer(txt, return_tensors="pt", truncation=True, padding=True)
    with torch.no_grad():
        outputs = psychiatric_model(**inputs)
    logits = outputs.logits
    probabilities = torch.softmax(logits, dim=1).squeeze().tolist()
    return dict(zip(psychiatric_labels, probabilities))

# Load BlenderBot for Lifestyle and Nutrition Chatbot
blender_model_name = "facebook/blenderbot-3B"  # Pre-trained BlenderBot 3B model
blender_tokenizer = BlenderbotTokenizer.from_pretrained(blender_model_name)
blender_model = BlenderbotForConditionalGeneration.from_pretrained(blender_model_name)

# Chat function for Lifestyle and Nutrition
chat_history = []

def chatbot_response(user_input):
    global chat_history
    new_input_ids = blender_tokenizer.encode(user_input + blender_tokenizer.eos_token, return_tensors='pt')
    bot_input_ids = torch.cat([chat_history, new_input_ids], dim=-1) if chat_history else new_input_ids
    chat_history = blender_model.generate(bot_input_ids, max_length=1000, pad_token_id=blender_tokenizer.eos_token_id)
    response = blender_tokenizer.decode(chat_history[:, bot_input_ids.shape[-1]:][0], skip_special_tokens=True)
    return response

def clear_chat():
    global chat_history
    chat_history = []
    return []

# Gradio Interfaces
medical_text = gr.Textbox(lines=2, label='Describe your symptoms in detail')
medical_label = gr.Label()
medical_examples = ['I feel short of breath and have a high fever.', 'My throat hurts and I keep sneezing.', 'I am always thirsty.']

psychiatric_text = gr.Textbox(lines=2, label='Describe your mental health concerns in detail')
psychiatric_label = gr.Label()
psychiatric_examples = ['I feel hopeless and have no energy.', 'I am unable to concentrate and feel anxious all the time.', 'I have recurring intrusive thoughts.']

lifestyle_chatbot = gr.Chatbot(label="Chat with me about diet and nutrition!")
lifestyle_msg = gr.Textbox(placeholder="Ask your question here...", label="Your Question")
lifestyle_clear = gr.Button("Clear Chat")

def user_message(input_text):
    if not input_text.strip():
        return lifestyle_chatbot, "Please enter a question."
    response = chatbot_response(input_text)
    lifestyle_chatbot.append((input_text, response))
    return lifestyle_chatbot, ""

# Lifestyle & Nutrition Interface
lifestyle_interface = gr.Interface(
    fn=user_message,
    inputs=[lifestyle_msg],
    outputs=[lifestyle_chatbot, lifestyle_msg],
    live=True,
    title="Nutritionist Chatbot",
    description="Ask me anything about diet, food, and nutrition!"
)

# Medical Diagnosis Interface
medical_interface = gr.Interface(
    fn=classify_medical_text,
    inputs=medical_text,
    outputs=medical_label,
    examples=medical_examples,
    description=medical_description,
)

# Psychiatric Analysis Interface
psychiatric_interface = gr.Interface(
    fn=classify_psychiatric_text,
    inputs=psychiatric_text,
    outputs=psychiatric_label,
    examples=psychiatric_examples,
    description=psychiatric_description,
)

# Combine interfaces using Tabs
app = gr.TabbedInterface(
    [medical_interface, psychiatric_interface, lifestyle_interface],
    ["Medical Diagnosis", "Psychiatric Analysis", "Lifestyle & Nutrition Chat"]
)

app.launch(inline=False)