Adding mastodon API examples

CircuitPython_Mastodon_API_Examples/Read_From_Mastodon/code.py

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+# SPDX-FileCopyrightText: 2022 Liz Clark for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
+import os
+import re
+import time
+import ssl
+import wifi
+import socketpool
+import microcontroller
+import adafruit_requests
+
+#  enter the hashtag that you want to follow
+hashtag = "CircuitPython"
+
+#  connect to SSID
+wifi.radio.connect(os.getenv('WIFI_SSID'), os.getenv('WIFI_PASSWORD'))
+
+#  add your mastodon token as 'mastodon_token' to your .env file
+headers = {'Authorization': 'Bearer ' + os.getenv('mastodon_token') + 'read:statuses'}
+
+pool = socketpool.SocketPool(wifi.radio)
+requests = adafruit_requests.Session(pool, ssl.create_default_context())
+
+#  initial request, gets most recent matching hashtag post
+#  add your mastodon instance (mastodon.social, tech.lgbt, etc) to your .env file as mastodon_host
+r = requests.get("https://%s/api/v1/timelines/tag/%s?limit=1" % (os.getenv('mastodon_host'), hashtag), headers=headers) # pylint: disable=line-too-long
+json_data = r.json()
+post_id = str(json_data[0]['id'])
+print("A new #%s post from @%s:" % (hashtag, str(json_data[0]['account']['acct'])))
+print(re.sub('<[^>]+>', '', json_data[0]['content']))
+print()
+
+while True:
+    try:
+        time.sleep(360)
+        # compares post_id to see if a new post to the hashtag has been found
+        r = requests.get("https://%s/api/v1/timelines/tag/%s?since_id=%s" % (os.getenv('mastodon_host'), hashtag, post_id), headers=headers) # pylint: disable=line-too-long
+        json_data = r.json()
+        json_length = len(json_data)
+        # if the id's match, then the json array is empty (length of 0)
+        # otherwise there is a new post
+        if json_length > 0:
+            post_id = str(json_data[0]['id'])
+            print("A new #%s post from @%s:" % (hashtag, str(json_data[0]['account']['acct'])))
+            print(re.sub('<[^>]+>', '', json_data[0]['content']))
+            print()
+        else:
+            print("no new #%s posts" % hashtag)
+            print(json_length)
+            print()
+
+    except Exception as e:  # pylint: disable=broad-except
+        print("Error:\n", str(e))
+        print("Resetting microcontroller in 10 seconds")
+        time.sleep(10)
+        microcontroller.reset()

CircuitPython_Mastodon_API_Examples/Send_To_Mastodon/code.py

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+# SPDX-FileCopyrightText: 2022 Liz Clark for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
+import os
+import ssl
+import wifi
+import socketpool
+import adafruit_requests
+
+# add your mastodon token as 'mastodon_token' to your .env file
+headers = {'Authorization': 'Bearer ' + os.getenv('mastodon_token')}
+
+# add your mastodon instance to your .env file as mastodon_host
+url = 'https://' + os.getenv('mastodon_host') + '/api/v1/statuses'
+
+# connect to SSID
+wifi.radio.connect(os.getenv('WIFI_SSID'), os.getenv('WIFI_PASSWORD'))
+
+pool = socketpool.SocketPool(wifi.radio)
+requests = adafruit_requests.Session(pool, ssl.create_default_context())
+
+# you'll be prompted in the REPL to enter your post text
+post = input("Please enter your Mastodon post text: ")
+# pack the post for sending with the API
+post_text = {"status": post}
+
+# confirm in the REPL that you want to post by entering y for yes or n for no
+send_check = input("Send post to Mastodon (y/n)?")
+
+# if you type y
+if send_check == "y":
+    # send to mastodon with a POST request
+    r = requests.post(url, data=post_text, headers=headers)
+    print()
+    print("You posted '%s' to Mastodon. Goodbye." % post)
+# if you type n
+else:
+    print("You did not post to Mastodon. Goodbye.")