Fisharebest\Webtrees\Http\RequestHandlers\MapDataExportCSV::handle()

Complexity

Conditions	12
Paths	432

Size

Total Lines	110
Code Lines	62

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

<?php
    public function handle(ServerRequestInterface $request): ResponseInterface
    {
        $parent_id = $request->getAttribute('parent_id');

        if ($parent_id === null) {
            $parent = new PlaceLocation('');
        } else {
            $parent = $this->map_data_service->findById((int) $parent_id);
        }

        for ($tmp = $parent, $hierarchy = []; $tmp->id() !== null; $tmp = $tmp->parent()) {
            $hierarchy[] = $tmp->locationName();
        }

        // Create the file name
        $filename = preg_replace('/[^\p{L}]+/u', '-', $hierarchy[0] ?? 'Global') . '.csv';

        // Recursively search for child places
        $places = [];
        $queue  = [[
            $parent->id(), array_reverse($hierarchy), $parent->latitude(), $parent->longitude()
        ]];

        while ($queue !== []) {
            [$id, $hierarchy, $latitude, $longitude] = array_shift($queue);

            if ($latitude !== null && $longitude !== null) {
                $places[] = (object) [
                    'hierarchy' => $hierarchy,
                    'latitude'  => $latitude,
                    'longitude' => $longitude,
                ];
            }

            $query = DB::table('place_location');
            // Data for the next level.

            if ($id === null) {
                $query->whereNull('parent_id');
            } else {
                $query->where('parent_id', '=', $id);
            }

            $rows = $query
                ->orderBy('place', 'DESC')
                ->select(['id', 'place', 'latitude', 'longitude'])
                ->get();

            $next_level = count($hierarchy);

            foreach ($rows as $row) {
                $hierarchy[$next_level] = $row->place;
                array_unshift($queue, [$row->id, $hierarchy, $row->latitude, $row->longitude]);
            }
        }

        // Pad all locations to the length of the longest.
        $max_level = 0;
        foreach ($places as $place) {
            $max_level = max($max_level, count($place->hierarchy));
        }

        $places = array_map(function (object $place) use ($max_level): array {
            return array_merge(
                [
                    count($place->hierarchy) - 1,
                ],
                array_pad($place->hierarchy, $max_level, ''),
                [
                    $this->map_data_service->writeLongitude((float) $place->longitude),
                    $this->map_data_service->writeLatitude((float) $place->latitude),
                    '',
                    '',
                ]
            );
        }, $places);

        // Create the header line for the output file (always English)
        $header = [
            'Level',
        ];

        for ($i = 0; $i < $max_level; $i++) {
            $header[] = 'Place' . $i;
        }

        $header[] = 'Longitude';
        $header[] = 'Latitude';
        $header[] = 'Zoom';
        $header[] = 'Icon';

        $resource = fopen('php://memory', 'wb+');

        if ($resource === false) {
            throw new RuntimeException('Failed to create temporary stream');
        }

        fputcsv($resource, $header, MapDataService::CSV_SEPARATOR, '"', '\\');

        foreach ($places as $place) {
            fputcsv($resource, $place, MapDataService::CSV_SEPARATOR, '"', '\\');
        }

        rewind($resource);

        $filename = addcslashes($filename, '"');

        return response(stream_get_contents($resource))
            ->withHeader('content-type', 'text/csv; charset=UTF-8')
            ->withHeader('content-disposition', 'attachment; filename="' . $filename . '"');
    }