app.py

import gradio as gr
from transformers import pipeline
from speechbrain.pretrained import Tacotron2, HIFIGAN, EncoderDecoderASR
import matplotlib.pyplot as plt
import pandas as pd

# Initialize psychometric model
psych_model_name = "KevSun/Personality_LM"
psych_model = pipeline("text-classification", model=psych_model_name)

# Initialize ASR and TTS models
asr_model = EncoderDecoderASR.from_hparams(source="speechbrain/asr-crdnn-rnnlm-librispeech", savedir="tmp_asr")
tts_model = Tacotron2.from_hparams(source="speechbrain/tts-tacotron2-ljspeech", savedir="tmp_tts")
voc_model = HIFIGAN.from_hparams(source="speechbrain/tts-hifigan-ljspeech", savedir="tmp_voc")

# Psychometric Test Questions
text_questions = [
    "How do you handle criticism?",
    "Describe a time when you overcame a challenge.",
    "What motivates you to work hard?"
]

audio_questions = [
    "What does teamwork mean to you?",
    "How do you handle stressful situations?"
]

# Function to analyze text responses
def analyze_text_responses(responses):
    analysis = [psych_model(response)[0] for response in responses]
    traits = {response["label"]: response["score"] for response in analysis}
    return traits

# Function to handle TTS
def generate_audio_question(question):
    mel_output, alignment, _ = tts_model.encode_text(question)
    waveforms = voc_model.decode_batch(mel_output)
    return waveforms[0].numpy()

def process_audio_response(audio):
    # Check if the audio input is None
    if audio is None:
        return "No audio provided"
    
    # Process the audio if it's a valid input
    try:
        text_response = asr_model.transcribe_file(audio)
        return text_response
    except Exception as e:
        return f"Error processing audio: {str(e)}"

# Gradio interface functions
def text_part(candidate_name, responses):
    traits = analyze_text_responses(responses)
    df = pd.DataFrame(traits.items(), columns=["Trait", "Score"])
    plt.figure(figsize=(8, 6))
    plt.bar(df["Trait"], df["Score"], color="skyblue")
    plt.title(f"Psychometric Analysis for {candidate_name}")
    plt.xlabel("Traits")
    plt.ylabel("Score")
    plt.xticks(rotation=45)
    plt.tight_layout()
    return df, plt

def audio_part(candidate_name, audio_responses):
    # Check if any audio response is invalid (None)
    valid_audio_responses = [process_audio_response(audio) for audio in audio_responses if audio is not None]
    
    # If all responses are invalid, return an error message
    if not valid_audio_responses:
        return "No valid audio responses provided", None

    traits = analyze_text_responses(valid_audio_responses)
    df = pd.DataFrame(traits.items(), columns=["Trait", "Score"])
    plt.figure(figsize=(8, 6))
    plt.bar(df["Trait"], df["Score"], color="lightcoral")
    plt.title(f"Audio Psychometric Analysis for {candidate_name}")
    plt.xlabel("Traits")
    plt.ylabel("Score")
    plt.xticks(rotation=45)
    plt.tight_layout()
    return df, plt


# Gradio UI function
def chat_interface(candidate_name, *responses):
    # Separate text responses and audio responses
    num_text_questions = len(text_questions)
    text_responses = responses[:num_text_questions]
    audio_responses = responses[num_text_questions:]
    
    # Process text responses
    text_df, text_plot = text_part(candidate_name, text_responses)
    
    # Process audio responses
    audio_df, audio_plot = audio_part(candidate_name, audio_responses)
    
    return text_df, text_plot, audio_df, audio_plot

# Create text inputs and audio inputs
text_inputs = [gr.Textbox(label=f"Response to Q{i+1}: {q}") for i, q in enumerate(text_questions)]
audio_inputs = [gr.Audio(label=f"Response to Q{i+1}: {q}", type="filepath") for i, q in enumerate(audio_questions)]

interface = gr.Interface(
    fn=chat_interface,
    inputs=[gr.Textbox(label="Candidate Name")] + text_inputs + audio_inputs,
    outputs=["dataframe", "plot", "dataframe", "plot"],
    title="Psychometric Analysis Chatbot"
)

# Launch the interface
interface.launch()