#ifndef INDOOR_WIFI_SCAN_LINUX_H
#define INDOOR_WIFI_SCAN_LINUX_H

#include "WiFiChannels.h"
#include "WiFiScan.h"
#include "../WiFiMeasurements.h"

#include <stdio.h>
#include <time.h>
#include <iwlib.h>
#include <string>
#include <iostream>

class WiFiScanLinux : public WiFiScan {

private:

	wireless_scan_head head;
	wireless_scan *result;
	iwrange range;
	int sock;

	std::string dev;

public:

	WiFiScanLinux(const std::string& dev) : dev(dev) {

		/* Open socket to kernel */
		sock = iw_sockets_open();
		std::cout << sock << std::endl;

	}

	WiFiMeasurements scan() override {

		WiFiMeasurements res;
		char* dev = (char*) this->dev.c_str();

		/* Get some metadata to use for scanning */
		if (iw_get_range_info(sock, dev, &range) < 0) {
			printf("Error during iw_get_range_info. Aborting.\n");
			exit(2);
		}
		if (range.we_version_compiled < 14) {
			printf("scanning not supported");
			exit(2);
		}

//		// params
//		struct iwreq request;
//		request.u.param.flags = IW_SCAN_DEFAULT;
//		request.u.param.value = 0;
//		if (iw_set_ext(sock, dev, SIOCSIWSCAN, &request) == -1) {
//			printf("iw_set_ext(SIOCSIWSCAN)");
//			exit(EXIT_FAILURE);
//		}

		/* Perform the scan */
		if (iw_scan(sock, dev, range.we_version_compiled, &head) < 0) {
			printf("Error during iw_scan. Aborting.\n");
			exit(2);
		}

		/* Traverse the results */
		result = head.result;
		while (NULL != result) {

			// access-point's MAC
			const uint8_t* macPtr = (const uint8_t*) result->ap_addr.sa_data;
			const uint64_t macLng =  ((uint64_t)macPtr[5]<<40)|((uint64_t)macPtr[4]<<32)|((uint64_t)macPtr[3]<<24)|((uint64_t)macPtr[2]<<16)|((uint64_t)macPtr[1]<<8)|((uint64_t)macPtr[0]<<0);
			const MACAddress mac(macLng);

			const int8_t rssi = result->stats.qual.level;
			const std::string ssid = result->b.essid;

			result->b.

			const int freq = (result->b.freq)/10e5;
			const int channel = WiFiChannels::freqToChannel(freq);
			//std::cout << ssid << "\t" << "freq: " << freq << "\t" << "rssi: " << (int) (rssi) << " dBm" << std::endl;
			//printf("%s - %d\n", result->b.essid,
			result = result->next;

			std::cout << mac.asString() << "\t" << ssid << "\t" << channel << "\t" << (int)rssi << " dBm" << std::endl;

			AccessPoint ap(mac, ssid);

			WiFiMeasurement mes(ap, rssi);
			res.entries.push_back(mes);

		}

		return res;

	}

};

#endif //INDOOR_WIFI_SCAN_LINUX_H