Add collation to getCollections and getViews

Although it's not displayed anywhere other than `db:table` for now, the `collation`
column is present in some of laravel's artisan dabase commands.

Author: paulinevos

src/Schema/Builder.php

@@ -15,6 +15,7 @@
 use function array_column;
 use function array_fill_keys;
 use function array_filter;
+use function array_key_exists;
 use function array_keys;
 use function array_map;
 use function array_merge;
@@ -26,6 +27,7 @@
 use function implode;
 use function in_array;
 use function is_array;
+use function is_bool;
 use function is_string;
 use function iterator_to_array;
 use function sort;
@@ -170,6 +172,9 @@ private function getCollectionRows(
                 continue;
             }
 
+            $options = $collectionInfo->getOptions();
+            $collation = $options['collation'] ?? [];
+
             // Aggregation is not supported on views
             $shouldAggregateStats = $aggregateStats !== null && $collectionInfo->getType() !== 'view';
 
@@ -181,7 +186,7 @@ private function getCollectionRows(
                 'schema_qualified_name' => $db->getDatabaseName() . '.' . $collectionName,
                 'size' => $stats[0]?->storageStats?->totalSize ?? null,
                 'comment' => null,
-                'collation' => null,
+                'collation' => $this->collationToString($collation),
                 'engine' => null,
             ];
         }
@@ -191,6 +196,32 @@ private function getCollectionRows(
         return $collections;
     }
 
+    private function collationToString(array $collation): string
+    {
+        $map = [
+            'locale' => 'l',
+            'strength' => 's',
+            'caseLevel' => 'cl',
+            'caseFirst' => 'cf',
+            'numericOrdering' => 'no',
+            'alternate' => 'a',
+            'maxVariable' => 'mv',
+            'normalization' => 'n',
+            'backwards' => 'b',
+        ];
+
+        $parts = [];
+        foreach ($collation as $key => $value) {
+            if (array_key_exists($key, $map)) {
+                $shortKey = $map[$key];
+                $shortValue = is_bool($value) ? ($value ? '1' : '0') : $value;
+                $parts[] = "{$shortKey}={$shortValue}";
+            }
+        }
+
+        return implode(';', $parts);
+    }
+
     /** @param string|null $schema Database name */
     public function getTables($schema = null)
     {