Added support for media download/upload.

main.py

 import sys
 
 import json
+import re
+import tempfile
+from urllib.parse import urlparse
 
 import requests
 from mastodon import Mastodon
     baseurl = 'https://%s' % config['hostname']
     return Mastodon(access_token=config['token'], api_base_url=baseurl)
 
+def download_file(url, destdir):
+    resp = requests.get(url)
+    resp.raise_for_status()
+
+    fname = None
+    if 'content-disposition' in resp.headers:
+        # Taken from: https://stackoverflow.com/questions/31804799/
+        d = resp.headers['content-disposition']
+        fname = re.findall("filename=(.+)", d)[0]
+    else:
+        u = urlparse(url)
+        fname = u.path.rsplit('/', 1)[-1]
+
+    destpath = os.path.join(destdir, fname)
+
+    with open(destpath, 'wb') as f:
+        f.write(resp.content)
+
+    return destpath
+
 def make_post(masto, data):
-    body = '%s\n\nby /u/%s at https://old.reddit.com/%s' % (data['title'], data['username'], data['rid'])
+    with tempfile.TemporaryDirectory(prefix='mastoreddit.', dir='/tmp') as td:
+        os.makedirs(td, exist_ok=True)
 
-    #if len(data['attachments']) > 4:
-    #    data['attachments'] = data['attachments'][:4]
+        if len(data['media']) > 4:
+            data['media'] = data['media'][:4]
 
-    image_resps = None
-    #if data['attachments'] is not None:
-    #    for a in data['attachments']:
-    #        res = masto.media_post(a)
-    #        res.raise_for_status()
-    #        image_resps.append(res)
-    #else:
-    #    image_resps = None
+        image_resps = None
+        if data['media'] is not None and len(data['media']) > 0:
+            image_resps = []
+            for a in data['media']:
+                dlpath = download_file(a, td)
+                res = masto.media_post(dlpath)
+                image_resps.append(res)
 
-    masto.status_post(body, media_ids=image_resps)
+        body = '%s\n\nby /u/%s at https://old.reddit.com/%s' % (data['title'], data['username'], data['rid'])
+        masto.status_post(body, media_ids=image_resps)
 
 def extract_media_urls(data):
+
     if 'selftext' in data:
-        return []
+        st = data['selftext']
+        if st is not None and len(st) > 0:
+            return []
 
     if 'post_hint' not in data:
         if 'gallery_data' in data:
 
     raise ValueError('unknown hint type ' + hint)
 
+def process_post(post):
+    d = post['data']
+
+    media = []
+    try:
+        media = extract_media_urls(d)
+    except Exception as e:
+        print('error processing ' + d['id'] + ': ' + str(e))
+
+    return {
+        'rid': d['id'],
+        'title': d['title'],
+        'username': d['author'],
+        'score': d['ups'],
+        'media': media
+    }
+
 def query_tops(config):
     url = 'https://www.reddit.com/r/%s/top.json?sort=top&t=day' % config['subreddit']
     resp = requests.get(url, headers = {'User-agent': 'mastoreddit'})
     for post in j['data']['children']:
         if post['kind'] != 't3':
             print('found post of kind', post['kind'])
-        d = post['data']
-
-        media = None
-        try:
-            media = extract_media_urls(d)
-        except Exception as e:
-            print('error processing ' + d['id'] + ': ' + str(e))
-
-        posts.append({
-            'rid': d['id'],
-            'title': d['title'],
-            'username': d['author'],
-            'score': d['ups'],
-            'media': media
-        })
+        posts.append(process_post(post))
 
     return posts
 
     masto = make_masto(config)
     #    make_post(masto, {'title': sys.argv[1], 'username': 'nobody', 'rid': 'none', 'attachments': [sys.argv[2]]})
     res = query_tops(config)
-    for r in res[:5]:
-        print('posting', r['rid'], '-', r['title'])
+    for r in res:
+        print('posting', r['rid'], '-', r['title'], '=====', r)
         make_post(masto, r)
 
 if __name__ == '__main__':