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# a minimal snippet for validating the upload sequence, for testing purposes (with AppTest)
from typing import List
import streamlit as st
# to run streamlit from this subdir, we need the the src dir on the path
# NOTE: pytest doesn't need this to run the tests, but to develop the test
# harness is hard without running streamlit
import sys
from os import path
# src (parent from here)
src_dir = path.dirname( path.dirname( path.abspath(__file__) ) )
sys.path.append(src_dir)
# we aim to validate:
# - user uploads multple files via FileUploader (with key=file_uploader_data)
# - they get buffered into session state
# - some properties are extracted from the files, and are displayed in a visual
# element so we can validate them with apptest.
from input.input_handling import (
spoof_metadata, is_valid_email,
get_image_datetime, get_image_latlon,
init_input_data_session_states
)
def buffer_uploaded_files():
st.write("buffering files! ")
uploaded_files:List = st.session_state.file_uploader_data
for ix, file in enumerate(uploaded_files):
image_datetime_raw = get_image_datetime(file)
latitude0, longitude0 = get_image_latlon(file)
#st.write(f"- file {ix}: {file.name}")
#st.write(f" - datetime: {image_datetime_raw}")
#st.write(f" - lat/lon: {latitude0}, {longitude0}")
s = f"index: {ix}, name: {file.name}, datetime: {image_datetime_raw}, lat: {latitude0}, lon:{longitude0}"
st.text_area(f"{file.name}", value=s, key=f"metadata_{ix}")
print(s)
init_input_data_session_states()
with st.sidebar:
author_email = st.text_input("Author Email", spoof_metadata.get('author_email', ""),
key="input_author_email")
if author_email and not is_valid_email(author_email):
st.error("Please enter a valid email address.")
st.file_uploader(
"Upload one or more images", type=["png", 'jpg', 'jpeg', 'webp'],
accept_multiple_files=True,
key="file_uploader_data",
on_change=buffer_uploaded_files
)
# this is the callback that would be triggered by the FileUploader
# - unfortunately, we get into a mess now
# - in real app, this runs twice and breaks (because of the duplicate keys)
# - in the test, if we don't run manually, we don't get the frontend elements to validate
# - if we remove the on_change, both run ok. but it deviates from the true app.
# - possible ways forward?
# - could we patch the on_change, or substitute the buffer_uploaded_files?
if (1 and "file_uploader_data" in st.session_state and
len(st.session_state.file_uploader_data) ):
print(f"buffering files: {len(st.session_state.file_uploader_data)}")
buffer_uploaded_files() |