skynet/demo.php

## demo.php
<?php

/*
    Task: create an application that:
        - imports the provided XML files (which contain sector data).
        - generate "alerts" based on the ingest data.
        - display the generated alerts in a table.

    Rules/Notes:
        Alerts:
            - An alert is defined by the PFDirection data point.
            - An alert is generated if the current day's PFDirection is different from the previous day's.

        Display:
            - the display feature should take a date as a URL parameter and display all the generated alerts for that date
            - the feature should display the previous day's PFDirection as well as the current day's PFDirection
*/

use Orchestra\Parser\Xml\Facade as XmlParser;
use Illuminate\Support\Facades\Input;
use Carbon\Carbon;

$title = "Sector Data";
$html = '';
$valid_date = true;
$current = '';
$previous = '';

// get date from query string
$input = Input::all();

try {
    $date = Carbon::createFromFormat('ymd', $input['date']);
    $current = $date->format('ymd');
    $title .= " for " . $date->toFormattedDateString();
    $previous = $date->subDay()->format('ymd');
}
catch (Exception $err) {
    $valid_date = false;
}

// check if files exist and parse
$path = storage_path();

$current_file = $path . "/data/us-sectors-{$current}.xml";
$previous_file = $path . "/data/us-sectors-{$previous}.xml";

if ($valid_date && File::exists($current_file)) {

    // parse current
    $xml = XmlParser::load($current_file);
    $map = [
        'PriceDate' => ['uses' => 'PriceDate'],
        'Region' => ['uses' => 'Region'],
        'Sector' => ['uses' => 'Sector[SectorId,Name,BullPC,Current,Prev,Change,PFDirection]'],
    ];
    $data = $xml->parse($map);

    // parse previous
    if (File::exists($previous_file)) {
        $xml = XmlParser::load($previous_file);
        $data_previous = $xml->parse($map);
    } else {
        $title .= ' <mark><span class="warning" style="font-weight: normal">(XML file for previous date not found)</span></mark>';
        $data_previous = false;
    }

    if (! empty($data_previous)) {
        // merge data
        foreach ($data['Sector'] as $k => $d) {
            foreach ($data_previous['Sector'] as $kp => $dp) {
                if ($d['SectorId'] == $dp['SectorId']) {
                    $data['Sector'][$k]['PFDirectionPrevious'] = $dp['PFDirection'];
                }
            }
        }
    }

    // set alerts
    foreach ($data['Sector'] as $k => $d) {
        $data['Sector'][$k]['Alert'] = isset($d['PFDirectionPrevious']) ? $d['PFDirection'] != $d['PFDirectionPrevious'] : false;
        if (! isset($d['PFDirectionPrevious'])) {
            $data['Sector'][$k]['PFDirectionPrevious'] = 'n/a';
        }
    }

    // var_dump($data);

    // build table body
    foreach ($data['Sector'] as $d) {
        $row_class = $d['Alert'] ? 'bg-danger' : '';
        $row_class = $d['PFDirection'] == "O" ? $row_class . ' bg-primary' : $row_class . ' bg-success';
        $html .= <<<HTML
        <tr class="{$row_class}">
          <td scope="row">{$d['SectorId']}</td>
          <td>{$d['Name']}</td>
          <td>{$d['BullPC']}</td>
          <td>{$d['Current']}</td>
          <td>{$d['Prev']}</td>
          <td>{$d['Change']}</td>
          <td>{$d['PFDirection']}</td>
          <td>{$d['PFDirectionPrevious']}</td>
        </tr>
HTML;
    }

} else {
    $html = <<<HTML
    <tr>
      <td colspan=7 scope="row"><mark>XML file for this date not found</mark></td>
    </tr>
HTML;
}
	<?php

	/*
	Task: create an application that:
	- imports the provided XML files (which contain sector data).
	- generate "alerts" based on the ingest data.
	- display the generated alerts in a table.

	Rules/Notes:
	Alerts:
	- An alert is defined by the PFDirection data point.
	- An alert is generated if the current day's PFDirection is different from the previous day's.

	Display:
	- the display feature should take a date as a URL parameter and display all the generated alerts for that date
	- the feature should display the previous day's PFDirection as well as the current day's PFDirection
	*/

	use Orchestra\Parser\Xml\Facade as XmlParser;
	use Illuminate\Support\Facades\Input;
	use Carbon\Carbon;

	$title = "Sector Data";
	$html = '';
	$valid_date = true;
	$current = '';
	$previous = '';

	// get date from query string
	$input = Input::all();

	try {
	$date = Carbon::createFromFormat('ymd', $input['date']);
	$current = $date->format('ymd');
	$title .= " for " . $date->toFormattedDateString();
	$previous = $date->subDay()->format('ymd');
	}
	catch (Exception $err) {
	$valid_date = false;
	}

	// check if files exist and parse
	$path = storage_path();

	$current_file = $path . "/data/us-sectors-{$current}.xml";
	$previous_file = $path . "/data/us-sectors-{$previous}.xml";

	if ($valid_date && File::exists($current_file)) {

	// parse current
	$xml = XmlParser::load($current_file);
	$map = [
	'PriceDate' => ['uses' => 'PriceDate'],
	'Region' => ['uses' => 'Region'],
	'Sector' => ['uses' => 'Sector[SectorId,Name,BullPC,Current,Prev,Change,PFDirection]'],
	];
	$data = $xml->parse($map);

	// parse previous
	if (File::exists($previous_file)) {
	$xml = XmlParser::load($previous_file);
	$data_previous = $xml->parse($map);
	} else {
	$title .= ' <mark><span class="warning" style="font-weight: normal">(XML file for previous date not found)</span></mark>';
	$data_previous = false;
	}

	if (! empty($data_previous)) {
	// merge data
	foreach ($data['Sector'] as $k => $d) {
	foreach ($data_previous['Sector'] as $kp => $dp) {
	if ($d['SectorId'] == $dp['SectorId']) {
	$data['Sector'][$k]['PFDirectionPrevious'] = $dp['PFDirection'];
	}
	}
	}
	}

	// set alerts
	foreach ($data['Sector'] as $k => $d) {
	$data['Sector'][$k]['Alert'] = isset($d['PFDirectionPrevious']) ? $d['PFDirection'] != $d['PFDirectionPrevious'] : false;
	if (! isset($d['PFDirectionPrevious'])) {
	$data['Sector'][$k]['PFDirectionPrevious'] = 'n/a';
	}
	}

	// var_dump($data);

	// build table body
	foreach ($data['Sector'] as $d) {
	$row_class = $d['Alert'] ? 'bg-danger' : '';
	$row_class = $d['PFDirection'] == "O" ? $row_class . ' bg-primary' : $row_class . ' bg-success';
	$html .= <<<HTML
	<tr class="{$row_class}">
	<td scope="row">{$d['SectorId']}</td>
	<td>{$d['Name']}</td>
	<td>{$d['BullPC']}</td>
	<td>{$d['Current']}</td>
	<td>{$d['Prev']}</td>
	<td>{$d['Change']}</td>
	<td>{$d['PFDirection']}</td>
	<td>{$d['PFDirectionPrevious']}</td>
	</tr>
	HTML;
	}

	} else {
	$html = <<<HTML
	<tr>
	<td colspan=7 scope="row"><mark>XML file for this date not found</mark></td>
	</tr>
	HTML;
	}