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;;;; lazybones-documentation.lisp -- documenting APP instances

(in-package  :lazybones)

(defun sorted-endpoints (endpoints)
  (sort (copy-seq endpoints) #'string< :key #'endpoint-route))

(defun generate-app-documentation (app)
  "For now, generates a single Markdown string that documents each endpoint in APP."
  (symbol-macrolet ((newline (progn  (princ #\newline)(princ #\newline))))
    (with-slots
          (title
           version
           endpoints
           (default-authorizer authorizer)
           default-content-type
           app-error-response-contents
           description)
        app
      (with-output-to-string (*standard-output*) 
        (princ "# ") (princ title) (princ " - ") (princ "v") (princ version) 
        newline
        (princ description)
        newline
        (princ "## Endpoints")
        (dolist (ep (sorted-endpoints endpoints))
          (with-slots (method route authorizer endpoint-documentation) ep
            newline 
            (princ "### ") (princ method) (princ " ") (princ route)
            newline
            (when authorizer 
              (princ "Authorization Required: ")
              (cond ((function-or-function-name-p authorizer)
                     (princ (documentation authorizer 'function)))
                    ((function-or-function-name-p default-authorizer)
                     (princ (documentation default-authorizer 'function))))
              newline)

            (princ endpoint-documentation) ))))))

(defun function-or-function-name-p (thing)
  (or (functionp thing)
      (and (symbolp thing) (fboundp thing))))