import streamlit as st
import datasets
import os
import json
from transformers import AutoTokenizer
import ast

CACHE_DIR = "cache_ds/" #Use this to build the dataset
contribution_json = "contributors.json"

contribution_dict = json.load(open(contribution_json,"r"))


splits = ['EuroParliamentProceedings', 'TED2020', 'PileOfLaw', 'StackExchange_ver2', 'GithubIssues', 'Opensubtitles', 'USPTO', 'S2ORC', 'DevDocs', 'CodePileReddit2022', 'DMMath', 'Gutenberg', 'USENET', 'GithubDiff', 'Enwiki', 'GNOME', 'ASFPublicMail', 'PileV2Reddit2020', 'CodePilePosts', 'Discourse', 'Tanzil', 'arXiv', 'UbuntuIRC', 'PubMed', 'CodePileReddit2020', 'CodePileReddit2021', 'GlobalVoices', 'FreeLaw_Options', 'PileV2Posts','Bible']

cached_ds = os.listdir(CACHE_DIR)
tokenizer = AutoTokenizer.from_pretrained('EleutherAI/gpt-neox-20b')


def load_page(split):
    with st.spinner('Downloading and buidling dataset...'):
        if split not in cached_ds:
            ds = datasets.load_dataset('CarperAI/pile-v2-small-filtered',"train", data_files="data/"+split+"/data.json")
        else:
            ds = datasets.load_from_disk(CACHE_DIR+split)
    print("Sucessfully loaded "+split)
    st.title("Dataset Explorer")
    st.write(f"# {split}")
    st.caption(f"Contributors: {','.join(contribution_dict[split])}")
    with st.form("dataset_form"):
        index = st.slider('Select a row', 0, len(ds['train'])-1, 0)
        if st.form_submit_button("Load"):
            st.write(f"Row {index}")
            data = ds['train'][index]
            content = data["text"]
            meta = data["meta"]
            with st.expander("Render Content"):
                st.write(content)
            st.write("### Content:")
            st.text(content)
            st.write("### Meta:")
            st.write(ast.literal_eval(meta))
            tokenized =  tokenizer(content, return_length=True)['length'][0]
            token_count_metric = st.metric("Token Count",value=tokenized,delta=2048-tokenized)



demo_name = st.sidebar.selectbox("Choose a demo", splits)
load_page(demo_name)
    # st.write(f"Loaded {ds} with {len(dataset['train'])} rows")

# st.sidebar.title('Pile v2 Explorer')
# split = st.sidebar.selectbox('Select a split', splits)
# st.sidebar.write('You selected:', split)
# dataset = datasets.load_dataset('CarperAI/pile-v2-small-filtered', data_dir="data/"+split+"/data.json")
# index = st.sidebar.slider('Select a row', 0, len(dataset['train'])-1, 0)
# st.write(dataset['train'][index]['text'])