;;; guile-sdl3 -- Scheme bindings for SDL3
;;; Copyright © 2024 David Thompson <dthompson2@worcester.edu>
;;;
;;; Licensed under the Apache License, Version 2.0 (the "License");
;;; you may not use this file except in compliance with the License.
;;; You may obtain a copy of the License at
;;;
;;;    http://www.apache.org/licenses/LICENSE-2.0
;;;
;;; Unless required by applicable law or agreed to in writing, software
;;; distributed under the License is distributed on an "AS IS" BASIS,
;;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
;;; See the License for the specific language governing permissions and
;;; limitations under the License.

;;; Commentary:
;;
;; SDL3 initialization and shutdown.
;;
;;; Code:

(define-module (sdl3)
  #:use-module (ice-9 match)
  #:use-module (sdl3 bindings init)
  #:use-module (sdl3 errors)
  #:use-module (srfi srfi-1)
  #:use-module (system foreign)
  #:export (sdl-init
            sdl-quit))

(define* (sdl-init #:optional (subsystems '(audio video joystick haptic gamepad events sensor camera)))
  "Initialize SDL @var{subsystems}, a list of symbols.  By default, all
subsystems are initialized.

Valid subsystem names are:

@itemize
@item @code{audio}
@item @code{video}
@item @code{joystick}
@item @code{haptic}
@item @code{gamepad}
@item @code{events}
@item @code{sensor}
@item @code{camera}
@end itemize"
  (sdl-assert 'sdl-init
              (SDL_Init
               (fold (lambda (name prev)
                       (logior (match name
                                 ('audio SDL_INIT_AUDIO)
                                 ('video SDL_INIT_VIDEO)
                                 ('joystick SDL_INIT_JOYSTICK)
                                 ('haptic SDL_INIT_HAPTIC)
                                 ('gamepad SDL_INIT_GAMEPAD)
                                 ('events SDL_INIT_EVENTS)
                                 ('sensor SDL_INIT_SENSOR)
                                 ('camera SDL_INIT_CAMERA)
                                 (_ (raise (make-sdl-error 'sdl-init
                                                           #:message "invalid subsystem name"
                                                           #:irritants (list name)))))
                               prev))
                     0 subsystems))))

(define (sdl-quit)
  "Clean up all initialized subsystems."
  (SDL_Quit))