/*
  Copyright 2020 David Robillard <d@drobilla.net>

  Permission to use, copy, modify, and/or distribute this software for any
  purpose with or without fee is hereby granted, provided that the above
  copyright notice and this permission notice appear in all copies.

  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

/*
  Tests that realize sends a create event, and can safely be called twice.

  Without handling this case, an application that accidentally calls realize
  twice could end up in a very confusing situation where multiple windows have
  been allocated (and ultimately leaked) for a view.
*/

#undef NDEBUG

#include "test_utils.h"

#include "pugl/pugl.h"
#include "pugl/stub.h"

#include <assert.h>
#include <stdbool.h>
#include <stddef.h>

typedef enum {
  START,
  CREATED,
} State;

typedef struct {
  PuglWorld*      world;
  PuglView*       view;
  PuglTestOptions opts;
  State           state;
} PuglTest;

static PuglStatus
onEvent(PuglView* view, const PuglEvent* event)
{
  PuglTest* test = (PuglTest*)puglGetHandle(view);

  if (test->opts.verbose) {
    printEvent(event, "Event: ", true);
  }

  switch (event->type) {
  case PUGL_CREATE:
    assert(test->state == START);
    test->state = CREATED;
    break;
  default:
    break;
  }

  return PUGL_SUCCESS;
}

int
main(int argc, char** argv)
{
  PuglTest test = {puglNewWorld(PUGL_PROGRAM, 0),
                   NULL,
                   puglParseTestOptions(&argc, &argv),
                   START};

  // Set up view
  test.view = puglNewView(test.world);
  puglSetClassName(test.world, "Pugl Test");
  puglSetWindowTitle(test.view, "Pugl Realize Test");
  puglSetBackend(test.view, puglStubBackend());
  puglSetHandle(test.view, &test);
  puglSetEventFunc(test.view, onEvent);
  puglSetDefaultSize(test.view, 512, 512);

  // Create initially invisible window
  assert(!puglRealize(test.view));
  assert(!puglGetVisible(test.view));
  while (test.state < CREATED) {
    assert(!puglUpdate(test.world, -1.0));
  }

  // Check that calling realize() again is okay
  assert(puglRealize(test.view) == PUGL_FAILURE);

  // Tear down
  puglFreeView(test.view);
  puglFreeWorld(test.world);

  return 0;
}
