import gradio as gr
from transformers import pipeline, AutoTokenizer, AutoConfig, AutoModelForSequenceClassification
from gradio.themes.utils import sizes


theme = gr.themes.Default(radius_size=sizes.radius_none).set(
    block_label_text_color = '#4D63FF',
    block_title_text_color = '#4D63FF',
    button_primary_text_color = '#4D63FF',
    button_primary_background_fill='#FFFFFF',
    button_primary_border_color='#4D63FF',
    button_primary_background_fill_hover='#EDEFFF',
)

modelName="distilbert-base-uncased-finetuned-sst-2-english"

tokenizer = AutoTokenizer.from_pretrained(modelName)
model = AutoModelForSequenceClassification.from_pretrained(modelName)
sentimentPipeline = pipeline("sentiment-analysis", model=model, tokenizer=tokenizer)

def sentiment_analysis(text):
    results = sentimentPipeline(text)

    return f"Sentiment: {results[0].get('label')}, Score: {results[0].get('score'):.2f}" 

with gr.Blocks(theme=theme, css="footer {visibility: hidden}") as demo:
    gr.Markdown("""
    <div align='center' ><font size='60'>文本情感分析</font></div>
    """)
    with gr.Row():
        with gr.Column():
            box1 = gr.Textbox(label="文本")
            with gr.Row():
                button = gr.Button("提交", variant="primary")
                clear = gr.Button("清除", variant="primary")
        box2 = gr.Textbox(label="文本")

    button.click(fn=sentiment_analysis, inputs=box1, outputs=box2)
    clear.click(lambda x: gr.update(value=''), [], [box1])
    examples = gr.Examples(examples=[['I am happy!'],['I am sad!']],  inputs=[box1], label="例子")
    

if __name__ == "__main__":
    demo.queue(concurrency_count=3)
    demo.launch(server_name = "0.0.0.0", server_port = 7028)