from meutils.pipe import *
from appzoo.streamlit_app import Page

import streamlit as st

"""
https://zhuanlan.zhihu.com/p/518115802?utm_medium=social&utm_oi=1290068536690085888
"""
class MyPage(Page):

    def main(self):
        with st.form("PDF"):
            file = st.file_uploader("选择待上传的PDF文件", type=['pdf'])

            if st.form_submit_button('开始预览', help='先上传文件！！！'):
                if file is not None:
                    base64_pdf = base64.b64encode(file.read()).decode('utf-8')
                    pdf_display = f"""<embed src="data:application/pdf;base64,{base64_pdf}" width="100%" height="800" type="application/pdf">"""
                    st.markdown(pdf_display, unsafe_allow_html=True)


if __name__ == '__main__':
    app_title = "# PDF应用"
    app_info = "PDF预览"
    MyPage(
        app_title=app_title,
        app_info=app_info,
        sidebar_title=None,
    ).main()