<?php
$feature = $variables['node']->feature;

if ($feature->type_id->name == 'polypeptide') {
    foreach ($feature->feature_relationship->subject_id as $rel) {
        if ($rel->object_id->type_id->name == 'mRNA') {
            $mrna_feat = chado_expand_var($rel->object_id, 'table', 'feature_relationship');

            if (count($mrna_feat->feature_relationship->subject_id) == 0) {
                // In some cases we might only have mRNA with no genes (brassica napus or transcriptomes
                $target_id = $mrna_feat->uniquename;
                echo '<a href="' . getenv('ENABLE_AUREME_LINKS') . $target_id . '">View data from metabolic model for ' . $feature->uniquename . '</a>';
                break;
            }
            foreach ($mrna_feat->feature_relationship->subject_id as $rel_g) {
                if ($rel_g->type_id->name == 'gene') {
                    $target_id = $rel_g->uniquename;
                    echo '<a href="' . getenv('ENABLE_AUREME_LINKS') . $target_id . '">View data from metabolic model for ' . $feature->uniquename . '</a>';
                    break;
                }
            }
        }
    }
}
else if ($feature->type_id->name == 'mRNA') {
    if (count($feature->feature_relationship->subject_id) == 0) {
        // In some cases we might only have mRNA with no genes (brassica napus or transcriptomes
        $target_id = $feature->uniquename;
        echo '<a href="' . getenv('ENABLE_AUREME_LINKS') . $target_id . '">View data from metabolic model for ' . $feature->uniquename . '</a>';
    }
    foreach ($feature->feature_relationship->subject_id as $rel) {
        if ($rel->object_id->type_id->name == 'gene') {
            $target_id = $rel->object_id->uniquename;
            echo '<a href="' . getenv('ENABLE_AUREME_LINKS') . $target_id . '">View data from metabolic model for ' . $feature->uniquename . '</a>';
            break;
        }
    }
}
else if ($feature->type_id->name == 'gene') {
    echo '<a href="' . getenv('ENABLE_AUREME_LINKS') . $feature->uniquename . '">View data from metabolic model for ' . $feature->uniquename . '</a>';
}