#include <stdio.h>
#include <stdlib.h>
#include <gphoto2/gphoto2-camera.h>

int main()
{
	GPContext* context;
	CameraAbilitiesList* al;
	GPPortInfoList* il;
	CameraList* list;
	const char* model;
	const char* port;
	int i, c;
	Camera** cameras;
	
	// Auto-detection of cameras
	context = gp_context_new();
	gp_abilities_list_new(&al);
	gp_abilities_list_load(al, context);
	gp_port_info_list_new(&il);
	gp_port_info_list_load(il);
	gp_list_new(&list);
	gp_abilities_list_detect(al, il, list, context);
	
	// Now we have the list of connected cameras; let's prepare the structures
	c=gp_list_count(list);
	cameras = malloc(sizeof(Camera*)*(c-1));
	printf("Number of cameras: %d\n", c);
	// We skip the first "generic" one
	for(i=1; i<c; i++)
	{
		int m, p;
		GPPortInfo info;
		CameraAbilities a;
		
		// We get info on the abilities of this camera...
		gp_list_get_name(list, i, &model);
		m = gp_abilities_list_lookup_model(al, model);
		gp_abilities_list_get_abilities(al, m, &a);
		
		// We get info about the port...
		gp_list_get_value(list, i, &port);
		p = gp_port_info_list_lookup_path(il, port);
		gp_port_info_list_get_info(il, p, &info);
		
		// We allocate and set the camera.
		printf("Detected camera #%d: name='%s' port='%s'\n", i-1, model, port);
		gp_camera_new(&cameras[i-1]);
		gp_camera_set_abilities(cameras[i-1], a);
		gp_camera_set_port_info(cameras[i-1], info);
	}
	
	// Cleanup
	gp_list_unref(list);
	gp_port_info_list_free(il);
	gp_abilities_list_free(al);
	
	// We now initialize the communication with cameras
	c--;
	for(i=0; i<c; i++)
	{
		gp_camera_init(cameras[i], context);
		printf("Initializing communication with camera #%d\n", i);
	}
	
	// We now ask some configuration data
	for(i=0; i<c; i++)
	{
		CameraWidget* widget_root;
		CameraWidget* widget_main;
		CameraWidget* widget_settings;
		CameraWidget* widget_owner;
		char* value;
		int res;
		
		res = gp_camera_get_config(cameras[i], &widget_root, context);
		printf("Code: %d - %s\n", res, gp_result_as_string(res));
		if(res<0) continue;
		res = gp_widget_get_child_by_name(widget_root, "main", &widget_main);
		printf("Code: %d - %s\n", res, gp_result_as_string(res));
		if(res<0) continue;
		res = gp_widget_get_child_by_name(widget_main, "settings", &widget_settings);
		printf("Code: %d - %s\n", res, gp_result_as_string(res));
		if(res<0) continue;
		res = gp_widget_get_child_by_name(widget_settings, "firmwareversion", &widget_owner);
		printf("Code: %d - %s\n", res, gp_result_as_string(res));
		if(res<0) continue;
		res = gp_widget_get_value(widget_owner, &value);
		printf("Code: %d - %s\n", res, gp_result_as_string(res));
		if(res<0) continue;
		printf("Camera #%d - owner='%s'\n", i, value);
		gp_widget_unref(widget_owner);
		/*
		gp_widget_unref(widget_settings);
		gp_widget_unref(widget_main);
		gp_widget_unref(widget_root);
		*/
	}
	
	// Cleanup
	for(i=0; i<c; i++)
	{
		gp_camera_exit(cameras[i], context);
		gp_camera_unref(cameras[i]);
	}
	gp_context_unref(context);
	return 0;
}