#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <gphoto2/gphoto2.h>
#include <time.h>

#define FOCUS_WIDGET_NAME         "manualfocusdrive"
#define VIEWFINDER_WIDGET_NAME    "viewfinder"

/**
 gp_widget_set_value(CameraWidget*, const void) <-sets value
 gp_widget_get_child_by_label(CameraWidget* widget, const char* label, CameraWidget ** child) <- child is widget
 gp_camera_get_config(Camera* camera, CameraWidget **window, GpContext* context) <- window is parent

 camera_init(Camera* camera, GPContext *context)


 Create context: 
 	context = gp_context_new();
      gp_context_set_error_func (context, ctx_error_func, NULL);
      gp_context_set_status_func (context, ctx_status_func, NULL);
 Create camera:
  gp_camera_new(&camera); <- point to return value

**/


int set_widget_value(CameraWidget *widget, void *widget_value, const char *widget_name, Camera *camera, GPContext *context) {
  int err;
  if ((err = gp_widget_set_value(widget, widget_value)) != 0) {
    printf("Error setting local widget value: %s\nThis is not the hardware\'s fault. Fix your code!\n", gp_result_as_string(err));
    return(1);
  }
  if((err = gp_camera_set_single_config(camera, widget_name, widget, context)) != 0) {
    printf("Error modifying camera widget: %s\n", gp_result_as_string(err));
    return(2);
  }
  
}

int main() {
  char *focus_large_temp = "Near 3";
  int viewfinder_state = 1; //wish there was a better way to do this...
  int err;
  Camera *cam;
  CameraWidget *widget_root;
  CameraWidget *focus_widget;
  CameraWidget *liveview_widget;
  
  GPContext *context = gp_context_new(); 
  gp_camera_new(&cam);

  //start up and connect to camera  
  printf("Initilizing camera...\n");
  if ((err = gp_camera_init(cam, context)) != 0) {
    printf("Couldn't connect to camera: %s\n", gp_result_as_string(err));
    return(1);
  }

  //get configuration tree
  gp_camera_get_config(cam, &widget_root, context); 
  //get child widgets
  gp_widget_get_child_by_name(widget_root, FOCUS_WIDGET_NAME, &focus_widget);
  gp_widget_get_child_by_name(widget_root, VIEWFINDER_WIDGET_NAME, &liveview_widget);

  //set to liveview so we can ajust focus
  set_widget_value(liveview_widget, &viewfinder_state, VIEWFINDER_WIDGET_NAME, cam, context); 

  

  
  gp_camera_exit(cam, context); 
  
  
  return(1);

}