"bundle exec twenty connect" works

twenty-cli/lib/twenty/cli.rb

@@ -1,4 +1,36 @@
 module Twenty
+  module DB
+    require "json"
+    DEFAULTS = { connections: [] }
+
+    ##
+    # FIXME:
+    # The following methods are required by
+    # both twenty-cli, and twenty-backend. Eventually
+    # they should be moved into their own package.
+
+    extend self
+
+    def home
+      File.join Dir.home, ".local", "share", "twenty"
+    end
+
+    def database
+      Ryo.from DEFAULTS.dup.merge(JSON.parse(database_path))
+    rescue
+      Ryo.from(DEFAULTS.dup)
+    end
+
+    def database_path
+      File.join(home, "database.json")
+    end
+
+    def save!(db)
+      File.binwrite database_path,
+                    JSON.dump(Ryo.table_of(db, recursive: true))
+    end
+  end
+
   require "twenty/backend"
   require "twenty/frontend"
   require_relative "command"

twenty-cli/lib/twenty/command/connect.rb

@@ -1,15 +1,27 @@
 class Twenty::Command::Connect < Twenty::Command
+  require "fileutils"
+  include Twenty::DB
+  include FileUtils
+
   set_banner usage: "twenty connect [OPTIONS]",
              description: "Connect a project to twenty"
 
   def run
     options = parse_options(argv)
-    options.help ? show_help : run_command
+    options.help ? show_help : run_command(options)
   end
 
   private
 
-  def run_command
-    warn "[twenty] connect..."
+  def run_command(options)
+    mkdir_p File.dirname(database_path)
+    path = Dir.getwd
+    name = File.basename(path)
+    db.connections.push({name:, path:})
+    save!(db)
+  end
+
+  def db
+    @db ||= database
   end
 end