import streamlit as st
from interface.utils import get_pipelines, extract_text_from_url, extract_text_from_file
from interface.draw_pipelines import get_pipeline_graph


def component_select_pipeline(container):
    pipeline_names, pipeline_funcs = get_pipelines()
    with container:
        selected_pipeline = st.selectbox(
            "Select pipeline",
            pipeline_names,
            index=pipeline_names.index("Keyword Search")
            if "Keyword Search" in pipeline_names
            else 0,
        )
        if (
            st.session_state["pipeline"] is None
            or st.session_state["pipeline"]["name"] != selected_pipeline
        ):
            (
                search_pipeline,
                index_pipeline,
            ) = pipeline_funcs[pipeline_names.index(selected_pipeline)]()
            st.session_state["pipeline"] = {
                "name": selected_pipeline,
                "search_pipeline": search_pipeline,
                "index_pipeline": index_pipeline,
            }


def component_show_pipeline(pipeline):
    """Draw the pipeline"""
    with st.expander("Show pipeline"):
        fig = get_pipeline_graph(pipeline)
        st.plotly_chart(fig, use_container_width=True)


def component_show_search_result(container, results):
    with container:
        for idx, document in enumerate(results):
            st.markdown(f"### Match {idx+1}")
            st.markdown(f"**Text**: {document['text']}")
            st.markdown(f"**Document**: {document['id']}")
            if document["score"] is not None:
                st.markdown(f"**Score**: {document['score']:.3f}")
            st.markdown("---")


def component_text_input(container):
    """Draw the Text Input widget"""
    with container:
        texts = []
        doc_id = 1
        with st.expander("Enter documents"):
            while True:
                text = st.text_input(f"Document {doc_id}", key=doc_id)
                if text != "":
                    texts.append({"text": text})
                    doc_id += 1
                    st.markdown("---")
                else:
                    break
        corpus = [
            {"text": doc["text"], "id": doc_id} for doc_id, doc in enumerate(texts)
        ]
        return corpus


def component_article_url(container):
    """Draw the Article URL widget"""
    with container:
        urls = []
        doc_id = 1
        with st.expander("Enter URLs"):
            while True:
                url = st.text_input(f"URL {doc_id}", key=doc_id)
                if url != "":
                    urls.append({"text": extract_text_from_url(url)})
                    doc_id += 1
                    st.markdown("---")
                else:
                    break

        for idx, doc in enumerate(urls):
            with st.expander(f"Preview URL {idx}"):
                st.write(doc)

        corpus = [
            {"text": doc["text"], "id": doc_id} for doc_id, doc in enumerate(urls)
        ]
        return corpus


def component_file_input(container):
    """Draw the extract text from file widget"""
    with container:
        files = []
        doc_id = 1
        with st.expander("Enter Files"):
            while True:
                file = st.file_uploader(
                    "Upload a .txt, .pdf, .csv, image file", key=doc_id
                )
                if file != None:
                    extracted_text = extract_text_from_file(file)
                    if extracted_text != None:
                        files.append({"text": extracted_text})
                        doc_id += 1
                        st.markdown("---")
                    else:
                        break
                else:
                    break

        for idx, doc in enumerate(files):
            with st.expander(f"Preview File {idx}"):
                st.write(doc)

        corpus = [
            {"text": doc["text"], "id": doc_id} for doc_id, doc in enumerate(files)
        ]
        return corpus