import gradio as gr
import joblib 
import re
import string
from nltk.corpus import stopwords
from nltk.tokenize import word_tokenize
from nltk.stem import PorterStemmer, WordNetLemmatizer
import nltk

nltk.download('stopwords')
stop_words = set(stopwords.words('english'))

# downloading the additional resources required by nltk
nltk.download('punkt')
nltk.download('wordnet')
nltk.download('omw-1.4')

# model initiation
cv = joblib.load('finalized_model.sav')
model = joblib.load('best_rf.sav')

def preprocess_text(text):
    """
    Runs a set of transformational steps to
    preprocess the text of the tweet.
    """
    # convert all text to lower case
    text = text.lower()

    # remove any urls
    text = re.sub(r'http\S+|www\S+|https\S+', "", text, flags=re.MULTILINE)

    # replace '****' with 'curse'
    text = re.sub(r'\*\*\*\*', "gaali", text)

    # remove punctuations
    text = text.translate(str.maketrans("", "", string.punctuation))

    # remove user @ references and hashtags
    text = re.sub(r'\@\w+|\#', "", text)

    # remove useless characters
    text = re.sub(r'[^ -~]', '', text)

    # remove stopwords
    tweet_tokens = word_tokenize(text)
    filtered_words = [word for word in tweet_tokens if word not in stop_words]

    # stemming
    ps = PorterStemmer()
    stemmed_words = [ps.stem(w) for w in filtered_words]

    # lemmatizing
    lemmatizer = WordNetLemmatizer()
    lemma_words = [lemmatizer.lemmatize(w, pos='a') for w in stemmed_words]

    return ' '.join(lemma_words)

def sentiment_analysis(text):

    text = cv.transform([preprocess_text(text)])
    pred_prob = model.predict_proba(text)[0]
    
    output = {"not_cyberbullying": float(pred_prob[0]), 
              "gender": float(pred_prob[1]), 
              "religion": float(pred_prob[2]),
              "age": float(pred_prob[3]),
              "ethnicity": float(pred_prob[4]),
              "other_cyberbullying": float(pred_prob[5])}
    
    # print(output)
    return output


intfc = gr.Interface(
    fn=sentiment_analysis,
    inputs=gr.Textbox(label="Input here", lines=2, placeholder="Input your text"),
    outputs=gr.Label(label="Sentiment Analysis"),
)
intfc.launch()