#include "base_opt.h"

#include <json/gb_json.h>
#include <huagao/hgscanner_error.h>
#include <sane/sane_ex.h>
#include <string.h>


sane_opt_provider::sane_opt_provider()
{
	set_where(nullptr);
}

sane_opt_provider::~sane_opt_provider()
{
	for (auto& v : following_)
		v.second->release();
	following_.clear();
}

std::string sane_opt_provider::sane_value_2_text(const char* type, void* value)
{
	if(strcmp(type, JSON_SANE_TYPE_BOOL) == 0)
		return *(bool*)value ? "true" : "false";
	else if(strcmp(type, JSON_SANE_TYPE_INT) == 0)
		return std::to_string(*(int*)value);
	else if(strcmp(type, JSON_SANE_TYPE_FIXED) == 0)
		return std::to_string(*(double*)value);
	else if(strcmp(type, JSON_SANE_TYPE_STRING) == 0)
		return (char*)value;
	else
		return "";
}

bool sane_opt_provider::set_opt_json_text(char* txt)
{
	gb_json* jsn = new gb_json();
	bool	ret = jsn->attach_text(txt);

	jsn->release();
	if (ret)
		opt_jsn_txt_ = txt;
	else
		opt_jsn_txt_ = "";

	return ret;
}
void sane_opt_provider::set_where(const char* where)
{
	if (where && *where)
	{
		where_ = where;
	}
	else
	{
		char	buf[20] = { 0 };

		sprintf(buf, "%p", this);
		where_ = buf;
	}
}

const char* sane_opt_provider::get_opt_json(void)
{
	return opt_jsn_txt_.c_str();
}
const char* sane_opt_provider::from(void)
{
	return where_.c_str();
}
void sane_opt_provider::set_following_provider(const char* name, sane_opt_provider* following)
{
	if (following_.count(name))
	{
		following_[name]->release();
		following_.erase(name);
	}

	if (following)
	{
		following_[name] = following;
		following->add_ref();
	}
}
sane_opt_provider* sane_opt_provider::get_following(const char* name)
{
	sane_opt_provider* prvd = nullptr;

	if (following_.count(name))
	{
		prvd = following_[name];
		if (prvd)
			prvd->add_ref();
	}

	return prvd;
}
char* sane_opt_provider::get_value(const char* name, void* value, size_t* size, int* err)
{
	if (err)
		*err = SCANNER_ERR_DEVICE_NOT_SUPPORT;

	if (size)
		*size = 0;

	return nullptr;
}
int sane_opt_provider::set_value(const char* name, void* val)
{
	return SCANNER_ERR_DEVICE_NOT_SUPPORT;
}
void sane_opt_provider::enable(const char* name, bool able)
{}