import streamlit as st
from transformers import pipeline

unmasker = pipeline('fill-mask', model='dsfsi/zabantu-nso-ven-170m')

def fill_mask(sentences):
    results = {}
    for sentence in sentences:
        unmasked = unmasker(sentence)
        results[sentence] = unmasked
    return results

def replace_mask(sentence, predicted_word):
    return sentence.replace("<mask>", predicted_word)

st.title("Fill Mask | Zabantu-nso-ven-170m)
st.write(f"")

col1, col2 = st.columns(2)

with col1:
    sample_sentences = [
        "Vhana vhane vha kha ḓi bva u bebwa vha kha khombo ya u <mask> nga Listeriosis"
    ]

    text_input = st.text_area(
        "Enter sentences with <mask> token (one per line):",
        "\n".join(sample_sentences)
    )

    input_sentences = text_input.split(",")

    if st.button("Submit"):
        result = fill_mask(input_sentences)

with col2:
    if 'result' in locals():  
        if result:
            for sentence, predictions in result.items():
                for prediction in predictions:
                    predicted_word = prediction['token_str']
                    score = prediction['score'] * 100

                    st.markdown(f"""
                    <div class="bar">
                        <div class="bar-fill" style="width: {score}%;"></div>
                    </div>
                    <div class="container">
                        <div style="align-items: left;">{predicted_word}</div>
                        <div style="align-items: right;">{score:.2f}%</div>
                    </div>
                    """, unsafe_allow_html=True)

if 'result' in locals():  
        if result:
            for sentence, predictions in result.items():
                predicted_word = predictions[0]['token_str']
                full_sentence = replace_mask(sentence, predicted_word)
                st.write(f"**Sentence:** {full_sentence }")

css = """
<style>
footer {display:none !important;}

.gr-button-primary {
    z-index: 14;
    height: 43px;
    width: 130px;
    left: 0px;
    top: 0px;
    padding: 0px;
    cursor: pointer !important; 
    background: none rgb(17, 20, 45) !important;
    border: none !important;
    text-align: center !important;
    font-family: Poppins !important;
    font-size: 14px !important;
    font-weight: 500 !important;
    color: rgb(255, 255, 255) !important;
    line-height: 1 !important;
    border-radius: 12px !important;
    transition: box-shadow 200ms ease 0s, background 200ms ease 0s !important;
    box-shadow: none !important;
}
.gr-button-primary:hover{
    z-index: 14;
    height: 43px;
    width: 130px;
    left: 0px;
    top: 0px;
    padding: 0px;
    cursor: pointer !important;
    background: none rgb(66, 133, 244) !important;
    border: none !important;
    text-align: center !important;
    font-family: Poppins !important;
    font-size: 14px !important;
    font-weight: 500 !important;
    color: rgb(255, 255, 255) !important;
    line-height: 1 !important;
    border-radius: 12px !important;
    transition: box-shadow 200ms ease 0s, background 200ms ease 0s !important;
    box-shadow: rgb(0 0 0 / 23%) 0px 1px 7px 0px !important;
}
.hover\:bg-orange-50:hover {
    --tw-bg-opacity: 1 !important;
    background-color: rgb(229,225,255) !important;
}
.to-orange-200 {
    --tw-gradient-to: rgb(37 56 133 / 37%) !important;
}
.from-orange-400 {
    --tw-gradient-from: rgb(17, 20, 45) !important;
    --tw-gradient-to: rgb(255 150 51 / 0);
    --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to) !important;
}
.group-hover\:from-orange-500{
    --tw-gradient-from:rgb(17, 20, 45) !important; 
    --tw-gradient-to: rgb(37 56 133 / 37%);
    --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to) !important;
}
.group:hover .group-hover\:text-orange-500{
    --tw-text-opacity: 1 !important;
    color:rgb(37 56 133 / var(--tw-text-opacity)) !important;
}
.container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 5px;
    width: 100%;
}
.bar {
    width: 70%;
    background-color: #e6e6e6;
    border-radius: 12px;
    overflow: hidden;
    margin-right: 10px;
    height: 5px;
}
.bar-fill {
    background-color: #17152e;
    height: 100%;
    border-radius: 12px;
}
</style>
"""

st.markdown(css, unsafe_allow_html=True)