add discord bot to the repo

discord_bot.py

@@ -0,0 +1,80 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+import logging
+import discord
+import yaml
+import re
+
+TOKEN = os.environ['DISCORD_TOKEN']
+TARG = os.environ['TARGET_SERVER']
+ROLE_ID = os.environ['ROLE_ID']
+
+intents = discord.Intents.default()
+intents.members = True
+
+client = discord.Client(intents=intents)
+exit_code = 0
+
+@client.event
+async def on_ready():
+	try:
+		print(f'{client.user} has connected to Discord!')
+		server = None
+		for g in client.guilds:
+			if g.name == TARG:
+				server = g
+				break
+		if server == None:
+			print(f'Error: Bot is not in a server named {TARG}')
+			exit_code = 1
+			await client.close()
+		
+		role = server.get_role(int(ROLE_ID))
+		if not role:
+			print('Error: requested role does not exist on server!')
+			exit_code = 1
+			await client.close()
+		
+		participants = []
+		for project in os.listdir('./projects'):
+			info_file = os.path.join('projects', project, 'info.yaml')
+			if not os.path.exists(info_file):
+				print(f'info.yaml does not exist for project {project}. Skipping.')
+			else:
+				try:
+					stream = open(info_file, 'r')
+					data = yaml.load(stream, Loader=yaml.FullLoader)
+					stream.close()
+					dname = data['documentation']
+					if 'discord' in dname:
+						dname = dname['discord']
+						parts = dname.split('#')
+						if len(parts) != 2 or len(parts[0]) == 0 or not re.match('^[0-9]{4}$', parts[1]):
+							print(f'Invalid format for discord username {dname} in project {project}. Skipping.')
+						else:
+							participants.append({'name': parts[0], 'discriminator': parts[1]})
+					else:
+						print(f'Project {project} has no discord username listed. Skipping.')
+				except Exception as ex:
+					print(f'Error parsing info.yaml for project {project}. Skipping.')
+					print(f'Error was: {ex}')
+		
+		for m in server.members:
+			a = [d for d in participants if d['name'] == m.name and d['discriminator'] == m.discriminator]
+			if len(a) != 0:
+				if len([d for d in m.roles if d.id == role.id]) == 0:
+					print(f'Giving the role to {m.name}#{m.discriminator}')
+					await m.add_roles(role, reason='Automatic role assignment by GitHub actions pipeline.')
+
+		print('All done!')
+		await client.close()
+	except Exception as ex:
+		print('Exception was thrown!')
+		print(ex)
+		exit_code = 1
+		await client.close()
+
+client.run(TOKEN)
+sys.exit(exit_code)