Download Roam images locally for use with Obsidian vault

downloadfirebase.py

# Opens files in directory, outputs firebase URLs to a file, downloads them, and replaces the links with a link to the new files.
# To use, replace PATH in the variable vaultDir with your vault's root directory.
# This automatically puts filenames in /assets - change the newFilePath variable if you want to change this

import re
import glob
import os
import requests
import calendar
import time

vaultDir = '/PATH'

firebaseShort = 'none'
fullRead = 'none'
fileFullPath = ''
fullTempFilePath = ''
i = 0
ext = ''

# Walk through all files in all directories within the specified vault directory
for subdir, dirs, files in os.walk(vaultDir):
    for file in files:
        # Open file in directory
        fileFullPath = os.path.join(subdir,file)
        fhand = open(fileFullPath, errors='ignore')
        for line in fhand:
            # Download the Firebase file and save it in the assets folder
            if 'firebasestorage' in line:
                try:
                    # If it's a PDF, it will be in the format {{pdf: link}}
                    if '{{pdf:' in line:
                        link = re.search(r'https://firebasestorage(.*)\?alt(.*)\}', line)
                    else:
                        link = re.search(r'https://firebasestorage(.*)\?alt(.*)\)', line)
                    firebaseShort = 'https://firebasestorage' + link.group(1) # https://firebasestorage.googleapis.com/v0/b/firescript-577a2.appspot.com/o/imgs%2Fapp%2FDownloadMyBrain%2FLy4Wel-rjk.png
                    firebaseUrl = link.group(0)[:-1] # https://firebasestorage.googleapis.com/v0/b/firescript-577a2.appspot.com/o/imgs%2Fapp%2FDownloadMyBrain%2FLy4Wel-rjk.png?alt=media&token=0fbafc8f-0a47-4720-9e68-88f70803ced6
                    # Download the file locally
                    r = requests.get(firebaseUrl)
                    timestamp = calendar.timegm(time.gmtime())
                    # Get file extension of file. Ex: .png; .jpeg
                    reg = re.search(r'(.*)\.(.+)', firebaseShort[-5:]) # a.png / .jpeg
                    ext = '.' + reg.group(2) # .jpeg
                    # Create assets folder if it doesn't exist
                    if not os.path.exists(vaultDir + '/assets'):
                        os.makedirs(vaultDir + '/assets')
                    # Create new local file out of downloaded firebase file
                    newFilePath = 'assets/' + str(timestamp) + '_' + str(i) + ext
                    # print(firebaseUrl + '>>>' + newFilePath)
                    with open(vaultDir + '/' + newFilePath,'wb') as output_file:
                        output_file.write(r.content)
                except AttributeError: # This is to prevent the AttributeError exception when no matches are returned
                    continue
                # Save Markdown file with new local file link as a temp file
                # If there is already a temp version of a file, open that.
                fullTempFilePath = vaultDir + '/temp_' + file
                if os.path.exists(fullTempFilePath):
                    fullRead = open(fullTempFilePath, errors='ignore')
                else:
                    fullRead = open(fileFullPath, errors='ignore')
                data = fullRead.read()
                data = data.replace(firebaseUrl,newFilePath)
                with open(fullTempFilePath,'wt') as temp_file:
                    temp_file.write(data)
                    i = i + 1
                if os.path.exists(fullTempFilePath):
                    path = os.replace(fullTempFilePath,fileFullPath)
                fullRead.close()
        # Close file
        fhand.close()

Thank you so much for this! Made a fork for anyone trying to download roam images and desiring filenames based on page titles (e.g. 'my-page-1.png' vs. 'timestampnum-1.png' ) : https://gist.github.com/seltzered/f93cd6dbe7db28ac820591e7ee14b820

Hi Nicole, thanks for making this and making it avaialble.

I'm trying to download voice memos (audio files) with this script but I fear I'm out of my depth. I'm a very novice programmer. If this is fairly straightforward, I would love any tips. If it's most complicated, I'll get more experience before I attempt further. Thanks for your time.

Hi Nicole,

I was able to get the audio files downloaded but the links in the MD files aren't working for PDFs or audio files. Here's what I'm seeing:

{{pdf: assets/1686594009_3.pdf}
{{audio: assets/1686594007_0.wav}

Again, if this is a simple fix, great. If not, still appreciate your time.