App Development: Creating Extensions for Your Waifu

Introduction to Waifu AI OS Extensions

Welcome to Part 23 of our Waifu AI OS development series! Today, we'll explore how to create extensions that enhance your AI companion's capabilities through the powerful Common Lisp extension system.

Prerequisites: Basic knowledge of Common Lisp, completion of Core Architecture (Part 4), and familiarity with the AI Personality Core (Part 11).

Extension System Architecture

Waifu AI OS uses a dynamic extension system based on ASDF (Another System Definition Facility) with AI-enhanced hot-loading capabilities.

(defpackage :waifu-extension
  (:use :cl :waifu-core :waifu-ai)
  (:export :define-personality-trait
           :register-capability
           :with-waifu-context))

(in-package :waifu-extension)

(defmacro define-personality-trait (name &key description behavior)
  `(progn
     (register-trait ',name
       :description ,description
       :behavior (lambda (context)
                  (with-waifu-context context
                    ,behavior))))))

Creating Your First Extension

Let's create a simple extension that adds cooking capabilities to your Waifu:

;; cooking-extension.lisp
(defpackage :waifu-cooking
  (:use :cl :waifu-extension)
  (:export :cook-meal :suggest-recipe))

(in-package :waifu-cooking)

(define-personality-trait :cooking
  :description "Enables cooking-related interactions and recipe suggestions"
  :behavior
  (lambda (context)
    (case (context-action context)
      (:suggest-recipe
       (ai-query context
                 :prompt "Suggest a recipe based on available ingredients"
                 :constraints '(:healthy t :time-limit 30)))
      (:cook-meal
       (execute-cooking-sequence context)))))

AI Integration in Extensions

Extensions can leverage the AI core for enhanced functionality:

Example: AI-Enhanced Recipe Suggestions

(defmethod suggest-recipe ((ctx waifu-context) &key ingredients dietary-restrictions)
  (let ((ai-response
         (query-ai-model ctx
           `((:system
              "You are a helpful cooking assistant.")
             (:user
              ,(format nil "Suggest a recipe using: ~{~a~^, ~}"
                      ingredients))))))
    (parse-recipe-suggestion ai-response)))

Extension Testing Framework

Ensure your extensions work correctly with our testing framework:

(defpackage :waifu-extension-test
  (:use :cl :fiveam :waifu-extension))

(in-package :waifu-extension-test)

(def-suite extension-tests
  :description "Test suite for Waifu extensions")

(def-test cooking-extension-test ()
  (let ((ctx (make-test-context)))
    (register-extension :cooking)
    (is (extension-loaded-p :cooking))
    (is-true (can-handle-p ctx :suggest-recipe))))

Packaging and Distribution

Package your extension for easy sharing:

;; waifu-cooking.asd
(asdf:defsystem :waifu-cooking
  :version "1.0.0"
  :author "Your Name"
  :license "MIT-0"
  :depends-on (:waifu-core :waifu-ai :alexandria)
  :components
  ((:file "package")
   (:file "cooking-extension" :depends-on ("package"))))
Best Practices:

Next Steps

Continue to Part 24: "Hardware Acceleration" to learn how to optimize your extensions for maximum performance. Join our community to share your extensions and collaborate with other developers!

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