(ql:quickload :imbricate)

(defpackage #:imbricate.run
  (:use #:cl))

(in-package :imbricate.run)

(defun print-help ()
  (format t "USAGE: imbricate SOURCE-DIR TARGET-DIR SHEET-TITLE~%~%")
  (format t "       SOURCE-DIR a directory containing png files. Non png files are skipped~%")
  (format t "       TARGET-DIR a directory where the tilesheet is to be built.~%")
  (format t "       SHEET-TITLE a name used for this sheet and its meta info~%~%"))


#+sbcl
(progn 
  (defun main ()
    (unless (= 4 (length sb-ext:*posix-argv*))
      (print-help)
      (uiop:quit))
    (destructuring-bind (src target title) (cdr sb-ext:*posix-argv*)
      (imbricate:imbricate-and-save src target title)
      (uiop:quit)))

  (sb-ext:save-lisp-and-die #p"imbricate" :toplevel #'main :executable t))