<?php
class Update extends CI_Controller {

	/*
		Controls Updating Elements of Wavelog
		Functions:
			dxcc - imports the latest clublog cty.xml data
			lotw_users - imports lotw users
	*/

    function __construct()
	{
		parent::__construct();
		
		if (ENVIRONMENT == 'maintenance' && $this->session->userdata('user_id') == '') {
            echo "Maintenance Mode is active. Try again later.\n";
			redirect('user/login');
		}
	}

	public function index()
	{
	    $data['page_title'] = "Updates";
	    $this->load->view('interface_assets/header', $data);
	    $this->load->view('update/index');
	    $this->load->view('interface_assets/footer');

	}

    /*
     * Create a path to a file in the updates folder, respecting the datadir
     * configuration option.
     */
    private function make_update_path($path) {
        $path = "updates/" . $path;
        $datadir = $this->config->item('datadir');
        if(!$datadir) {
            return $path;
        }
        return $datadir . "/" . $path;
    }

    /*
     * Load the dxcc entities
     */
	public function dxcc_entities() {
		// Load Database connectors
		$this->load->model('dxcc_entities');

		// Load the cty file
		$xml_data = simplexml_load_file($this->make_update_path("cty.xml"));

		//$xml_data->entities->entity->count();

		$count = 0;
		$a_data=[];
		foreach ($xml_data->entities->entity as $entity) {
			$startinfo = strtotime($entity->start);
			$endinfo = strtotime($entity->end);

			$start_date = ($startinfo) ? date('Y-m-d H:i:s',$startinfo) : null;
			$end_date = ($endinfo) ? date('Y-m-d H:i:s',$endinfo) : null;

			if(!$entity->cqz) {
				$data = array(
					'prefix' => (string) $entity->call,
					'name' =>  (string) $entity->entity,
				);
			} else {
				$data = array(
					'adif' => (int) $entity->adif,
					'name' =>  (string) $entity->name,
					'prefix' => (string)  $entity->prefix,
					'ituz' => (float) $entity->ituz,
					'cqz' => (int) $entity->cqz,
					'cont' => (string) $entity->cont,
					'long' => (float) $entity->long,
					'lat' => (float) $entity->lat,
					'start' => $start_date,
					'end' => $end_date,
				);
			}

			array_push($a_data,$data);
			$count += 1;
			if ($count % 10  == 0)
				$this->update_status("Preparing DXCC-Entries: ".$count);
		}
		$this->db->insert_batch('dxcc_entities', $a_data);

		$this->update_status();
		return $count;
	}

    /*
     * Load the dxcc exceptions
     */
	public function dxcc_exceptions() {
		// Load Database connectors
		$this->load->model('dxcc_exceptions');
		// Load the cty file
		$xml_data = simplexml_load_file($this->make_update_path("cty.xml"));

		$count = 0;
		$a_data=[];
		foreach ($xml_data->exceptions->exception as $record) {
			$startinfo = strtotime($record->start);
			$endinfo = strtotime($record->end);

			$start_date = ($startinfo) ? date('Y-m-d H:i:s',$startinfo) : null;
			$end_date = ($endinfo) ? date('Y-m-d H:i:s',$endinfo) : null;

			$data = array(
				'record' => (int) $record->attributes()->record,
				'call' => (string) $record->call,
				'entity' =>  (string) $record->entity,
				'adif' => (int) $record->adif,
				'cqz' => (int) $record->cqz,
				'cont' => (string) $record->cont,
				'long' => (float) $record->long,
				'lat' => (float) $record->lat,
				'start' => $start_date,
				'end' => $end_date,
			);

			array_push($a_data,$data);
			$count += 1;
			if ($count % 10  == 0)
				$this->update_status("Preparing DXCC Exceptions: ".$count);
		}
		$this->db->insert_batch('dxcc_exceptions', $a_data);

		$this->update_status();
		return $count;
	}

    /*
     * Load the dxcc prefixes
     */
	public function dxcc_prefixes() {
		// Load Database connectors
		$this->load->model('dxcc_prefixes');
		// Load the cty file
		$xml_data = simplexml_load_file($this->make_update_path("cty.xml"));

		$count = 0;
		$a_data=[];
		foreach ($xml_data->prefixes->prefix as $record) {
			$startinfo = strtotime($record->start);
			$endinfo = strtotime($record->end);

			$start_date = ($startinfo) ? date('Y-m-d H:i:s',$startinfo) : null;
			$end_date = ($endinfo) ? date('Y-m-d H:i:s',$endinfo) : null;

			$data = array(
				'record' => (int) $record->attributes()->record,
				'call' => (string) $record->call,
				'entity' =>  (string) $record->entity,
				'adif' => (int) $record->adif,
				'cqz' => (int) $record->cqz,
				'cont' => (string) $record->cont,
				'long' => (float) $record->long,
				'lat' => (float) $record->lat,
				'start' => $start_date,
				'end' => $end_date,
			);

			array_push($a_data,$data);
			$count += 1;
			if ($count % 10  == 0)
				$this->update_status("Preparing DXCC Prefixes: ".$count);
		}
		$this->db->insert_batch('dxcc_prefixes', $a_data);

		//print("$count prefixes processed");
		$this->update_status();
		return $count;
	}

	// Updates the DXCC & Exceptions from the Club Log Cty.xml file.
	public function dxcc() {
	    $this->update_status("Downloading file");

	    // give it 10 minutes...
	    set_time_limit(600);

		// Load Migration data if any.
		$this->load->library('migration');
		$this->fix_migrations();
		$this->migration->latest();

		// Download latest file.
		$url = "https://cdn.clublog.org/cty.php?api=608df94896cb9c5421ae748235492b43815610c9";

		$gz = gzopen($url, 'r');
		if ($gz === FALSE) {
			$this->update_status("FAILED: Could not download from clublog.org");
			log_message('error', 'FAILED: Could not download exceptions from clublog.org');
			return;
		}

		$data = "";
		while (!gzeof($gz)) {
		  $data .= gzgetc($gz);
		}
		gzclose($gz);

		if (file_put_contents($this->make_update_path("cty.xml"), $data) === FALSE) {
			$this->update_status("FAILED: Could not write to cty.xml file");
			return;
		}

	    // Clear the tables, ready for new data
		$this->db->empty_table("dxcc_entities");
		$this->db->empty_table("dxcc_exceptions");
		$this->db->empty_table("dxcc_prefixes");
		$this->update_status();

	    // Parse the three sections of the file and update the tables
	    $this->db->trans_start();
		$this->dxcc_entities();
		$this->dxcc_exceptions();
		$this->dxcc_prefixes();
		$this->db->trans_complete();

		$this->update_status("DONE");
	}

	public function update_status($done=""){

		if ($done != "Downloading file"){
			// Check that everything is done?
			if ($done == ""){
				$done = "Updating...";
			}
			$html = $done."<br/>";
			$html .= "Dxcc Entities: ".$this->db->count_all('dxcc_entities')."<br/>";
			$html .= "Dxcc Exceptions: ".$this->db->count_all('dxcc_exceptions')."<br/>";
			$html .= "Dxcc Prefixes: ".$this->db->count_all('dxcc_prefixes')."<br/>";
		} else {
			$html = $done."....<br/>";
			$datetime = new DateTime("now", new DateTimeZone('UTC'));
			$datetime = $datetime->format('Ymd h:i');
			$this->optionslib->update('dxcc_clublog_update', $datetime , 'no');
		}

		file_put_contents($this->make_update_path("status.html"), $html);
	}


	private function fix_migrations(){
        $res = $this->db->query("select version from migrations");
        if ($res->num_rows() >0){
            $row = $res->row();
            $version = $row->version;

            if ($version < 7){
                $this->db->query("update migrations set version=7");
            }
        }
	}

	public function check_missing_dxcc($all = false){
	    $this->load->model('logbook_model');
        $this->logbook_model->check_missing_dxcc_id($all);

	}

	public function check_missing_continent() {
		$this->load->model('logbook_model');
		$this->logbook_model->check_missing_continent();
	}

	public function update_distances() {
		$this->load->model('logbook_model');
		$this->logbook_model->update_distances();
	}

	public function check_missing_grid($all = false){
	    $this->load->model('logbook_model');
        $this->logbook_model->check_missing_grid_id($all);
	}

    public function update_clublog_scp() {
        $strFile = $this->make_update_path("clublog_scp.txt");
        $url = "https://cdn.clublog.org/clublog.scp.gz";
        set_time_limit(300);
        echo "Downloading Club Log SCP file...<br>";
        $gz = gzopen($url, 'r');
        if ($gz)
        {
            $data = "";
            while (!gzeof($gz)) {
                $data .= gzgetc($gz);
            }
            gzclose($gz);
            if (file_put_contents($strFile, $data) !== FALSE)
            {
                $nCount = count(file($strFile));
                if ($nCount > 0)
                {
                    echo "DONE: " . number_format($nCount) . " callsigns loaded";
                    $datetime = new DateTime("now", new DateTimeZone('UTC'));
                    $datetime = $datetime->format('Ymd h:i');
                    $this->optionslib->update('scp_update', $datetime , 'no');
                } else {
                    echo "FAILED: Empty file";
                }
            } else {
                echo "FAILED: Could not write to Club Log SCP file";
            }
        } else {
            echo "FAILED: Could not connect to Club Log";
        }
    }

    public function download_lotw_users() {
        $contents = file_get_contents('https://lotw.arrl.org/lotw-user-activity.csv', true);

        if($contents === FALSE) {
            echo "Something went wrong with fetching the LoTW users file.";
        } else {
            $file = './updates/lotw_users.csv';

            if (file_put_contents($file, $contents) !== FALSE) {     // Save our content to the file.
                echo "LoTW User Data Saved.";
            } else {
                echo "FAILED: Could not write to LoTW users file";
            }
        }

    }

    public function lotw_users() {
        $mtime = microtime();
        $mtime = explode(" ",$mtime);
        $mtime = $mtime[1] + $mtime[0];
        $starttime = $mtime;

        $file = 'https://lotw.arrl.org/lotw-user-activity.csv';

        $handle = fopen($file, "r");
        if ($handle === FALSE) {
            echo "Something went wrong with fetching the LoTW uses file";
            return;
        }
        $this->db->empty_table("lotw_users");
        $i = 0;
        $data = fgetcsv($handle,1000,",");
        do {
            if ($data[0]) {
                $lotwdata[$i]['callsign'] = $data[0];
                $lotwdata[$i]['lastupload'] = $data[1] . ' ' . $data[2];
                if (($i % 2000) == 0) {
                    $this->db->insert_batch('lotw_users', $lotwdata);
                    unset($lotwdata);
                    // echo 'Record ' . $i . '<br />';
                }
                $i++;
            }
        } while ($data = fgetcsv($handle,1000,","));
        fclose($handle);

        $this->db->insert_batch('lotw_users', $lotwdata);

        $mtime = microtime();
        $mtime = explode(" ",$mtime);
        $mtime = $mtime[1] + $mtime[0];
        $endtime = $mtime;
        $totaltime = ($endtime - $starttime);
        echo "This page was created in ".$totaltime." seconds <br />";
        echo "Records inserted: " . $i . " <br/>";
        $datetime = new DateTime("now", new DateTimeZone('UTC'));
        $datetime = $datetime->format('Ymd h:i');
        $this->optionslib->update('lotw_users_update', $datetime , 'no');
    }

    public function lotw_check() {
        $f = fopen('./updates/lotw_users.csv', "r");
        $result = false;
        while ($row = fgetcsv($f)) {
            if ($row[0] == '4W7EST/MM') {
                $result = $row[0];
                echo "found";
                break;
            }
        }
        fclose($f);
    }

    /*
     * Used for autoupdating the DOK file which is used in the QSO entry dialog for autocompletion.
     */
    public function update_dok() {
        $contents = file_get_contents('https://www.df2et.de/cqrlog/dok_and_sdok.txt', true);

        if($contents === FALSE) {
            echo "Something went wrong with fetching the DOK file.";
        } else {
            $file = './assets/json/dok.txt';

            if (file_put_contents($file, $contents) !== FALSE) {     // Save our content to the file.
                $nCount = count(file($file));
                if ($nCount > 0)
                {
                    echo "DONE: " . number_format($nCount) . " DOKs and SDOKs saved";
                    $datetime = new DateTime("now", new DateTimeZone('UTC'));
                    $datetime = $datetime->format('Ymd h:i');
                    $this->optionslib->update('dok_file_update', $datetime , 'no');
                } else {
                    echo"FAILED: Empty file";
                }
            } else {
                echo"FAILED: Could not write to dok.txt file";
            }
        }
    }

    /*
     * Used for autoupdating the SOTA file which is used in the QSO entry dialog for autocompletion.
     */
    public function update_sota() {
        $csvfile = 'https://www.sotadata.org.uk/summitslist.csv';

        $sotafile = './assets/json/sota.txt';

        $csvhandle = fopen($csvfile,"r");
        if ($csvhandle === FALSE) {
            echo "Something went wrong with fetching the SOTA file";
            return;
        }

        $data = fgetcsv($csvhandle,1000,","); // Skip line we are not interested in
        $data = fgetcsv($csvhandle,1000,","); // Skip line we are not interested in
        $data = fgetcsv($csvhandle,1000,",");
        $sotafilehandle = fopen($sotafile, 'w');

        if ($sotafilehandle === FALSE) {
            echo"FAILED: Could not write to sota.txt file";
            return;
        }

        $nCount = 0;
        do {
            if ($data[0]) {
                fwrite($sotafilehandle, $data[0].PHP_EOL);
                $nCount++;
            }
        } while ($data = fgetcsv($csvhandle,1000,","));

        fclose($csvhandle);
        fclose($sotafilehandle);

        if ($nCount > 0)
        {
            echo "DONE: " . number_format($nCount) . " SOTA's saved";
            $datetime = new DateTime("now", new DateTimeZone('UTC'));
            $datetime = $datetime->format('Ymd h:i');
            $this->optionslib->update('sota_file_update', $datetime , 'no');
        } else {
            echo"FAILED: Empty file";
        }
    }

    /*
     * Pulls the WWFF directory for autocompletion in QSO dialogs
     */
    public function update_wwff() {
        $csvfile = 'https://wwff.co/wwff-data/wwff_directory.csv';

        $wwfffile = './assets/json/wwff.txt';

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $csvfile);
        curl_setopt($ch, CURLOPT_HEADER, false);
        curl_setopt($ch, CURLOPT_USERAGENT, 'Wavelog Updater');
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $csv = curl_exec($ch);
        curl_close($ch);
        if ($csv === FALSE) {
            echo "Something went wrong with fetching the WWFF file";
            return;
        }

        $wwfffilehandle = fopen($wwfffile, 'w');
        if ($wwfffilehandle === FALSE) {
            echo"FAILED: Could not write to wwff.txt file";
            return;
        }

        $data = str_getcsv($csv,"\n");
        $nCount = 0;
        foreach ($data as $idx => $row) {
        if ($idx == 0) continue; // Skip line we are not interested in
        $row = str_getcsv($row, ',');
        if ($row[0]) {
            fwrite($wwfffilehandle, $row[0].PHP_EOL);
            $nCount++;
        }
        }

        fclose($wwfffilehandle);

        if ($nCount > 0)
        {
            echo "DONE: " . number_format($nCount) . " WWFF's saved";
            $datetime = new DateTime("now", new DateTimeZone('UTC'));
            $datetime = $datetime->format('Ymd h:i');
            $this->optionslib->update('wwff_file_update', $datetime , 'no');
        } else {
            echo"FAILED: Empty file";
        }
    }

    public function update_pota() {
        $csvfile = 'https://pota.app/all_parks.csv';

        $potafile = './assets/json/pota.txt';

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $csvfile);
        curl_setopt($ch, CURLOPT_HEADER, false);
        curl_setopt($ch, CURLOPT_USERAGENT, 'Wavelog Updater');
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $csv = curl_exec($ch);
        curl_close($ch);
        if ($csv === FALSE) {
            echo "Something went wrong with fetching the POTA file";
            return;
        }

        $potafilehandle = fopen($potafile, 'w');
        if ($potafilehandle === FALSE) {
            echo"FAILED: Could not write to pota.txt file";
            return;
        }
        $data = str_getcsv($csv,"\n");
        $nCount = 0;
        foreach ($data as $idx => $row) {
        if ($idx == 0) continue; // Skip line we are not interested in
        $row = str_getcsv($row, ',');
        if ($row[0]) {
            fwrite($potafilehandle, $row[0].PHP_EOL);
            $nCount++;
        }
        }

        fclose($potafilehandle);

        if ($nCount > 0)
        {
            echo "DONE: " . number_format($nCount) . " POTA's saved";
            $datetime = new DateTime("now", new DateTimeZone('UTC'));
            $datetime = $datetime->format('Ymd h:i');
            $this->optionslib->update('pota_file_update', $datetime , 'no');
        } else {
            echo"FAILED: Empty file";
        }
    }

}
?>
