viewervoice / app.py
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import os
from git import Repo
import streamlit as st
import time
from PIL import Image
import base64
from transformers import pipeline
import spacy
import numpy as np
from sentence_transformers import SentenceTransformer
from matplotlib import colormaps
from matplotlib.colors import ListedColormap
GITHUB_PAT = os.environ['GITHUB']
SENTIMENT = os.environ['SENTIMENT']
EMBEDDING = os.environ['EMBEDDING']
if not os.path.exists('repo_directory'):
try:
Repo.clone_from(f'https://marcus-t-s:{GITHUB_PAT}@github.com/marcus-t-s/yt-comment-analyser.git', 'repo_directory' )
except:
st.error("Error: Oops there's an issue on our end, please wait a moment and try again.")
st.stop()
from repo_directory.utils.chart_utils import *
from repo_directory.youtube_comment_class import *
# Streamlit configuration
st.set_page_config(
page_title="ViewerVoice | YouTube Comment Analyser",
layout="wide",
page_icon=Image.open('images/page_icon.png')
)
# Define and load cached resources
@st.cache_resource
def load_models():
sentiment_pipeline = pipeline("sentiment-analysis", model=r"cardiffnlp/twitter-roberta-base-sentiment")
embedding_model = SentenceTransformer('flax-sentence-embeddings/all_datasets_v4_MiniLM-L6')
spacy_nlp = spacy.load("en_core_web_sm")
add_custom_stopwords(spacy_nlp, {"bring", "know", "come"})
return sentiment_pipeline, embedding_model, spacy_nlp
@st.cache_resource
def load_colors_image():
mask = np.array(Image.open('images/youtube_icon.jpg'))
Reds = colormaps['Reds']
colors = ListedColormap(Reds(np.linspace(0.4, 0.8, 256)))
with open("images/viewervoice_logo_crop.png", "rb") as img_file:
logo_image = base64.b64encode(img_file.read()).decode("utf-8")
return mask, colors, logo_image
sentiment_pipeline, embedding_model, spacy_nlp = load_models()
mask, colors, logo_image = load_colors_image()
# Hide line at the top and "made with streamlit" text
hide_decoration_bar_style = """
<style>
header {visibility: hidden;}
footer {visibility: hidden;}
</style>
"""
st.markdown(hide_decoration_bar_style, unsafe_allow_html=True)
if 'YouTubeParser' not in st.session_state:
st.session_state['YouTubeParser'] = YoutubeCommentParser()
if 'comment_fig' not in st.session_state:
st.session_state["comment_fig"] = None
st.session_state["wordcloud_fig"] = None
st.session_state["topic_fig"] = None
st.session_state["sentiment_fig"] = None
if 'rerun_button' not in st.session_state:
st.session_state['rerun_button'] = "INIT"
if 'topic_filter' not in st.session_state:
st.session_state['topic_filter'] = False
if 'sentiment_filter' not in st.session_state:
st.session_state['sentiment_filter'] = False
if 'filter_state' not in st.session_state:
st.session_state['filter_state'] = "INIT"
if 'video_link' not in st.session_state:
st.session_state["video_link"] = None
if 'num_comments' not in st.session_state:
st.session_state['num_comments'] = None
# Set reference to YouTubeParser object for more concise code
yt_parser = st.session_state['YouTubeParser']
main_page = st.container()
def query_comments_button():
# Delete larger objects from session state to later replace
del st.session_state["comment_fig"]
del st.session_state["wordcloud_fig"]
del st.session_state["topic_fig"]
del st.session_state["sentiment_fig"]
del st.session_state["YouTubeParser"]
# Reset session state variables back to placeholder values
st.session_state.rerun_button = "QUERYING"
st.session_state['filter_state'] = "INIT"
st.session_state["topic_filter"] = False
st.session_state["sentiment_filter"] = False
st.session_state["semantic_filter"] = False
st.session_state["figures_built"] = False
st.session_state["comment_fig"] = None
st.session_state["wordcloud_fig"] = None
st.session_state["topic_fig"] = None
st.session_state["sentiment_fig"] = None
st.session_state["YouTubeParser"] = YoutubeCommentParser()
def filter_visuals_button():
st.session_state["filter_state"] = "FILTERING"
with st.sidebar:
st.session_state["video_link"] = st.text_input('YouTube Video URL', value="")
st.session_state["max_comments"] = st.slider(label="Maximum number of comments to query",
min_value=100,
max_value=2000,
step=100)
st.session_state["max_topics"] = st.slider(label="Maximum number of topics",
min_value=5,
max_value=20,
step=1)
st.button('Query comments :left_speech_bubble:', on_click=query_comments_button)
with main_page:
# Reduce space at the top
reduce_header_height_style = """
<style>
div.block-container {padding-top:0rem;}
div.block-container {padding-bottom:1rem;}
div.block-container {padding-left:1.5rem;}
</style>
"""
st.markdown(reduce_header_height_style, unsafe_allow_html=True)
# Title and intro section
markdown_content = f"""
<div style='display: flex; align-items: center; justify-content: center;'>
<img src='data:image/png;base64,{logo_image}' height='135px';/>
</div>
"""
st.markdown(markdown_content, unsafe_allow_html=True)
# LinkedIn links
lnk = '<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">'
st.markdown(lnk + """
<div style="display: flex; justify-content: center; align-items: center; flex-direction: column;">
<br>
<p style="text-align: center;"><b>Made by</b>
<b>
<a href='https://www.linkedin.com/in/afiba-7715ab166/' style="text-decoration: none">
<i class='fa fa-linkedin-square'></i>&nbsp;<span style='color: #000000'>Afiba Annor</span></a>
<a href='https://www.linkedin.com/in/marcus-singh-305927172/' style="text-decoration: none">
<i class='fa fa-linkedin-square'></i>&nbsp;<span style='color: #000000'>Marcus Singh</span></a>
</b></p>
</div>
""", unsafe_allow_html=True)
st.markdown("<hr>", unsafe_allow_html=True)
# Notes section
st.markdown("<p style='font-size: 1.3rem;'><b>📝 Notes</b></p>", unsafe_allow_html=True)
html_content = """
<ul>
<li style='font-size: 0.95rem;'>This dashboard is still under development; further updates will be implemented
in due course.</li>
<li style='font-size: 0.95rem;'>Currently, the dashboard exclusively caters to comments in English and does not
include comment replies.</li>
<li style='font-size: 0.95rem;'>Comments undergo cleaning and pre-processing to optimise modelling. As a result,
the returned comment count may fall short of the maximum queried amount.</li>
<li style='font-size: 0.95rem;'>Please note that the sentiment analysis currently does not take emojis into
account.</li>
<li style='font-size: 0.95rem;'>For optimal performance of the current topic model, we recommend retrieving
thousands of comments.</li>
<li style='font-size: 0.95rem;'>Please anticipate that querying comments and running the models may require
a few minutes to complete.</li>
</ul>
<hr>
"""
# Display the HTML content using st.markdown()
st.markdown(html_content, unsafe_allow_html=True)
# Query comments section
if (st.session_state.rerun_button == "QUERYING") and (st.session_state["video_link"] is not None):
with st.spinner('Querying comments and running models'):
yt_parser = st.session_state["YouTubeParser"]
try:
yt_parser.get_comments(st.session_state['video_link'], st.session_state['max_comments'])
yt_parser.get_video_title(st.session_state['video_link'])
except:
st.error("Error: Unable to query comments, incorrect YouTube URL.")
st.stop()
# Run formatting and models
try:
yt_parser.format_comments()
yt_parser.clean_comments()
yt_parser.run_sentiment_pipeline(sentiment_pipeline)
yt_parser.run_topic_modelling_pipeline(embedding_model,
nlp=spacy_nlp,
max_topics=st.session_state['max_topics'])
except ValueError:
st.error("Error: Oops there are not enough comments to analyse, please try a different video.")
st.stop()
except:
st.error("Error: Oops there's an issue on our end, please wait a moment and try again.")
st.stop()
# Set "QUERY COMPLETE" to bypass running this section on script re-run
st.session_state.rerun_button = "QUERY COMPLETE"
# Once comments are queried, build charts ready to visualise
if st.session_state.rerun_button == "QUERY COMPLETE":
# Check for built figures:
if (not st.session_state["figures_built"]) or (st.session_state.filter_state == "FILTERING"):
# Select colors for wordcloud
# If filtering button pressed
if st.session_state.filter_state == "FILTERING":
df_filtered = yt_parser.df_comments.copy()
if st.session_state["topic_filter"]:
df_filtered = df_filtered.query(f"Topic == {st.session_state.topic_filter}")
if st.session_state["sentiment_filter"]:
df_filtered = df_filtered.query(f"Sentiment == {st.session_state.sentiment_filter}")
if st.session_state["semantic_filter"]:
df_filtered = semantic_search(df=df_filtered, query=st.session_state["semantic_filter"],
embedding_model=embedding_model,
text_col='Comment_Clean')
if len(df_filtered) == 0:
st.session_state['num_comments'] = 0
else:
st.session_state['num_comments'] = len(df_filtered)
# Build filtered table figure
st.session_state["table_fig"] = comments_table(df_filtered,
['publishedAt', 'Comment_Formatted', 'Likes',
'Sentiment', 'Topic'],
{'publishedAt': 'Date', 'Comment_Formatted': 'Comment'})
# Build filtered wordcloud figure
st.session_state["wordcloud_fig"] = comment_wordcloud(df_filtered, mask, colors)
# Build filtered topic figure
st.session_state["topic_fig"] = topic_treemap(df_filtered, "Topic")
# Build filtered sentiment figure
st.session_state["sentiment_fig"] = sentiment_chart(df_filtered, "Sentiment")
st.session_state["figures_built"] = True
st.session_state.filter_state = "FILTERED"
# No filtering selected
else:
st.session_state['num_comments'] = len(yt_parser.df_comments)
# Can only build graphs if we have comments
if st.session_state['num_comments'] > 0:
try:
# Build unfiltered table figure
st.session_state["table_fig"] = comments_table(yt_parser.df_comments,
['publishedAt', 'Comment_Formatted', 'Likes',
'Sentiment', 'Topic'],
{'publishedAt': 'Date',
'Comment_Formatted': 'Comment'})
# Build unfiltered wordcloud figure
st.session_state["wordcloud_fig"] = comment_wordcloud(yt_parser.df_comments,
mask, colors)
# Build unfiltered topic figure
st.session_state["topic_fig"] = topic_treemap(yt_parser.df_comments, "Topic")
# Build unfiltered sentiment figure
st.session_state["sentiment_fig"] = sentiment_chart(yt_parser.df_comments, "Sentiment")
st.session_state["figures_built"] = True
except:
st.error("Error: Oops there's an issue on our end, please wait a moment and try again.")
st.stop()
with main_page:
if st.session_state.rerun_button == "QUERY COMPLETE":
st.subheader(f"{yt_parser.title}")
st.markdown("<hr><br>", unsafe_allow_html=True)
if st.session_state['num_comments'] > 0:
table_col, word_cloud_col = st.columns([0.55, 0.45])
with table_col:
st.markdown(f"""<p style='font-size: 1.3rem;
display: flex; align-items: center; justify-content: center;'><b>
Comments</b></p>""", unsafe_allow_html=True)
st.plotly_chart(st.session_state["table_fig"], use_container_width=True)
with word_cloud_col:
st.markdown(f"""<p style='font-size: 1.3rem;
display: flex; align-items: center; justify-content: center;'><b>
Word Cloud</b></p>""", unsafe_allow_html=True)
st.pyplot(st.session_state["wordcloud_fig"], use_container_width=True)
treemap_col, sentiment_donut_col = st.columns([0.55, 0.45])
with treemap_col:
st.markdown(f"""<p style='font-size: 1.3rem;
display: flex; align-items: center; justify-content: center;'><b>
Topic Proportions</b></p>""", unsafe_allow_html=True)
st.plotly_chart(st.session_state["topic_fig"], use_container_width=True)
with sentiment_donut_col:
st.markdown(f"""<p style='font-size: 1.3rem;
display: flex; align-items: center; justify-content: center;'><b>
Sentiment Distribution</b></p>""", unsafe_allow_html=True)
st.plotly_chart(st.session_state["sentiment_fig"], use_container_width=True)
# st.table(yt_parser.df_comments.head())
else:
st.write("Unfortunately we couldn't find any comments for this set of filters, please try "
"editing the filters and try again")
with st.sidebar:
# Define the HTML and CSS for the button-style container
if st.session_state['num_comments'] is not None:
num_comments = st.session_state['num_comments']
else:
num_comments = 0
htmlstr = f"""
<p style='background-color: rgb(255, 255, 255, 0.75);
color: rgb(0, 0, 0, 0.75);
font-size: 40px;
border-radius: 7px;
padding-top: 25px;
padding-bottom: 25px;
padding-right: 25px;
padding-left: 25px;
line-height:25px;
display: flex;
align-items: center;
justify-content: center;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);'>
&nbsp;{num_comments}</p>
"""
# Display the button-style container with number of comments
st.subheader("Number of comments")
st.markdown(htmlstr, unsafe_allow_html=True)
# Filters section
st.subheader("Filters")
if yt_parser.df_comments is not None:
st.session_state["topic_filter"] = st.multiselect("Topic",
options=sorted(list(yt_parser.df_comments['Topic'].unique())))
st.session_state["sentiment_filter"] = st.multiselect("Sentiment",
options=list(yt_parser.df_comments['Sentiment'].unique()))
st.session_state["semantic_filter"] = st.text_input("Keyword search",
max_chars=30)
st.button('Filter visualisations :sleuth_or_spy:', on_click=filter_visuals_button)
else:
st.multiselect("Topic",
options=["Please query comments from a video"],
disabled=True)
st.multiselect("Sentiment",
options=["Please query comments from a video"],
disabled=True)
st.text_input("Keyword search",
disabled=True)
st.button('Please query comments before filtering',
disabled=True)