Add interactive prompt for managing keys

prompt.rb

@@ -0,0 +1,51 @@
+require_relative 'collab'
+require 'tty-prompt'
+
+$prompt = TTY::Prompt.new
+
+
+def init
+  choices = %w(Keys Users Quit)
+  case $prompt.select("What do you want to do?", choices)
+  when "Users"
+    users
+  when "Keys"
+    keys
+  when "Quit"
+    exit
+  end  
+end
+
+def keys
+  choices = $users
+  user = $prompt.select("Pick a user", choices)
+  keys_user(user)
+end
+
+def keys_user(user)
+  choices = {'List keys' => :list ,'Add key' => :add, 'Remove key' => :remove, 'Reset authorized_keys' => :reset}
+  case $prompt.select("What do you want to do for user #{user}?", choices)
+  when :list
+    get_ssh_pubkeys(user).each{|k| puts k.pretty}
+    keys_user user
+  when :add
+    key = $prompt.ask("Please enter a valid public SSH key", echo: false)
+    add_ssh_pubkey(user,key)
+  when :remove
+    keys = get_ssh_pubkeys(user)#.map{|k| puts k.pretty}
+    key = $prompt.select("Select the key to delete", keys)
+    unless $prompt.no?("Are you sure you want to delete this key?")
+      remove_ssh_pubkey(user,key)
+    end
+  when :reset
+    unless $prompt.no?("Are you sure you want to reset the keys for this user?")
+      unless $prompt.no?("Really sure?")
+        reset_pubkeys(user)
+      end
+    end
+  end
+end
+
+while true
+  init
+end