server.py

''' Executing this function initiates the application of sentiment
    analysis to be executed over the Flask channel and deployed on
    localhost:5000.
'''
from flask import Flask, render_template, request
from EmotionDetection.emotion_detection import emotion_detector

app = Flask("Emotion Analyzer")

@app.route("/emotionDetector")
def sent_analyzer():
    ''' This code receives the text from the HTML interface and 
        runs emotion analysis over it using emotion_detector()
        function. The output returned shows the label and its confidence 
        score for the provided text.
    '''
    text_to_analyze = request.args.get('textToAnalyze')
    response = emotion_detector(text_to_analyze)
    anger = response['anger']
    disgust = response['disgust']
    fear = response['fear']
    joy = response['joy']
    sadness = response['sadness']
    dominant_emotion = response['dominant_emotion']

    if dominant_emotion is None:
        return "Invalid text! Please try again!."
    else:
        return (f"For the given statement, the system response is 'anger': {anger}, "
        f"'disgust': {disgust}, 'fear': {fear}, 'joy': {joy} and 'sadness': {sadness}.")

@app.route("/")
def render_index_page():
    ''' This function initiates the rendering of the main application
    page over the Flask channel
    '''
    return render_template('index.html')

if __name__ == "__main__":
    ''' This functions executes the flask app and deploys it on localhost:5000'''
    app.run(host="0.0.0.0", port=5002)