bot to save a pdf uploaded by the user to host computer

[mae5357]

Hello. I would like to create a bot that can read in an uploaded file (pdf) uploaded by the user and save it to a server (for now on the host computer). I am thinking the files.info method might work, but I am not sure how to get to the specific file. Could you post an example of how to do this?

import os
from slack_bolt import App

app = App(
    token= os.environ.get('SLACK_BOT_TOKEN'),
    signing_secret=os.environ.get("SLACK_SIGNING_SECRET")
)


# # # LISTENING FUNCTIONS # # # 
# This will matc h any message that contains "Hi!"
@app.message("Hi!")
def initial_message_func(message, say):
	say("please upload your pdf")


@app.message("")
def message_to_sam_func(client,message):
    client.file.info(file = file_ID)    #not sure how to get file_ID
                                        

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[seratch]

@mae5357 If the message argument in app.message listeners has attached files, they should have their file IDs. You can pass an ID to files.info for fetching detailed metadata. The files.info response provides url_private_download etc. You can download the content from the URL as long as your HTTP requests have a valid Authorization: Bearer {your token here} header.

Bolt for Python and its underlying Slack SDK do not offer any out-of-the-box module for downloading file data at this point. Please use your favorite HTTP client (say, requests?) for it.

[seratch]

For your information, the Java SDK project has a simple example demonstrating how to download the file form a file URL: https://github.com/slackapi/java-slack-sdk/blob/v1.7.0/slack-api-client/src/test/java/test_with_remote_apis/methods/samples/Issue453_DownloadingFiles_Test.java

[seratch]

@mae5357 You asked another question. Can you close this issue?

[mae5357]

Thank you for posting this code. The only part I cannot make sense of in python is how to get the private url when a file is uploaded? I am trying to do something like this:

#!/usr/bin/env python3
# Usage: python3 download_files_from_slack.py <URL>

import sys
import re
import requests

url = " ".join(sys.argv[1:])

token = 'SLACK_TOKEN'
resp = requests.get(url, headers={'Authorization': 'Bearer %s' % token})

headers = resp.headers['content-disposition']
fname = re.findall("filename=(.*?);", headers)[0].strip("'").strip('"')

assert not os.path.exists(fname), print("File already exists. Please remove/rename and re-run")
out_file = open(fname, mode="wb+")
out_file.write(resp.content)
out_file.close()

https://stackoverflow.com/questions/36144761/access-slack-files-from-a-slack-bot

However I am not sure what the url is suppose to be?

[seratch]

@mae5357 As the Java SDK example I've shared above demonstrates, a file object has url_private_download and you can use the URL for it. You can call files.info with file ID for knowing the URL at any time.

[mae5357]

Hello, this is the function I am trying to use.

@app.event("file_shared")
def file_func(payload, client):
    my_file = payload.get('file').get('id')
    print("THIS IS MY INFO:"+ client.files_info(imy_file))

however when I run I get this error:

ERROR:slack_bolt.App:Failed to run listener function (error: files_info() missing 1 required keyword-only argument: 'file')

I am not sure what to try next.

[seratch]

@mae5357

files_info() missing 1 required keyword-only argument: 'file'

As this error message says, you can use keyword arguments for the method call.

client.files_info(file=my_file)

[mae5357]

Thank you for the help. Posted final code in case others had issues

@app.event("file_shared")
def file_func(payload, client, ack):
    ack()

    #get the file id every time someone uploads a pdf
    my_file = payload.get('file').get('id')
    
    #get the json using files_info
    url = client.files_info(file = my_file).get('file').get('url_private')
    file_name = client.files_info(file = my_file).get('file').get('title')

    # save file
    resp = requests.get(url, headers={'Authorization': 'Bearer %s' % token})
    save_file = Path(file_name)
    save_file.write_bytes(resp.content)

[mauriciogracia]

In case you need your slack bot to recieve a file shared by DM here a starting point

@app.event("message")
def handle_message_events(body, logger):
    # Unhandled request({'type': 'event_callback', 'event': {'type': 'message', 'subtype': 'file_share'}})
    logging.warning(body)

You need ngrok to be running (when in development mode) and you need to enable Event Subscriptions and configure it with the URL that ngrok generates automatically.

Keep in mind that if you restart ngrok a new URL will be generated

If you want a stable URL you need to pay for ngrok or set another type of forwarding - https://ngrok.com/docs