#include "config-process.h"
#include "device.h"
#include "util.h"

#include <libubox/avl-cmp.h>

#include <assert.h>
#include <stdlib.h>
#include <string.h>


typedef struct _process_ctx {
	struct avl_tree *ret;
} process_ctx_t;

typedef struct _config_subtype {
	struct avl_node node;
} config_subtype_t;


static device_t * config_process_device(const char *name, struct json_object *obj) {
	const char *typename = NULL;
	struct json_object *device = neco_json_get_value(obj, "device", json_type_object);
	if (device)
		typename = neco_json_get_string(device, "type");

	const device_type_t *type = get_device_type(typename ?: "interface");
	if (!type)
		return NULL;

	return type->process_config(name, obj);
}

struct avl_tree * config_process(struct json_object *config) {
	if (!json_object_is_type(config, json_type_object))
		return NULL;

	struct json_object *devices = neco_json_get_value(config, "devices", json_type_object);
	if (!devices)
		return NULL;

	process_ctx_t ctx;
	ctx.ret = calloc(1, sizeof(*ctx.ret));
	if (!ctx.ret)
		return NULL;

	avl_init(ctx.ret, avl_strcmp, false, NULL);

	json_object_object_foreach(devices, name, obj) {
		device_t *device = config_process_device(name, obj);
		if (!device)
			continue;

		avl_insert(ctx.ret, &device->node);
	}

	return ctx.ret;
}