Added remove command

cli.py

@@ -21,6 +21,8 @@ elif cmd == "help":
 	import cli.help
 elif cmd == "add":
 	import cli.add
+elif cmd == "remove":
+	import cli.remove
 elif cmd == "clear":
 	import cli.clear
 else:

cli/remove.py

@@ -0,0 +1,60 @@
+import sys
+import os
+import json
+
+path = os.path.dirname(os.path.realpath(__file__))  + "/.."
+user = sys.argv[1]
+
+if len(sys.argv) == 3:
+	print("Please add the ID of the model to remove as an argument")
+	print("You can find the IDs by running:")
+	print("\n\thowdy " + user + " list\n")
+	sys.exit(1)
+
+if not os.path.exists(path + "/models"):
+	print("Face models have not been initialized yet, please run:")
+	print("\n\thowdy " + user + " add\n")
+	sys.exit(1)
+
+enc_file = path + "/models/" + user + ".dat"
+
+try:
+	encodings = json.load(open(enc_file))
+except FileNotFoundError:
+	print("No face model known for the user " + user + ", please run:")
+	print("\n\thowdy " + user + " add\n")
+	sys.exit(1)
+
+found = False
+
+for enc in encodings:
+	if str(enc["id"]) == sys.argv[3]:
+		print('This will remove the model called "' + enc["label"] + '" for ' + user)
+		ans = input("Do you want to continue [y/N]: ")
+
+		if (ans.lower() != "y"):
+			print('\nInerpeting as a "NO"')
+			sys.exit()
+
+		found = True
+		print()
+		break
+
+if not found:
+	print("No model with ID " + sys.argv[3] + " exists for " + user)
+	sys.exit()
+
+if len(encodings) == 1:
+	os.remove(path + "/models/" + user + ".dat")
+	print("Removed last model, howdy disabled for user")
+else:
+	new_encodings = []
+
+	for enc in encodings:
+		if str(enc["id"]) != sys.argv[3]:
+			new_encodings.append(enc)
+
+	with open(enc_file, "w") as datafile:
+		json.dump(new_encodings, datafile)
+
+	print("Removed model " + sys.argv[3])