fix: display shard key in collection tooltip

l10n/bundle.l10n.json

@@ -995,6 +995,7 @@
   "sessionId is required for query optimization": "sessionId is required for query optimization",
   "Settings:": "Settings:",
   "Severe multikey expansion": "Severe multikey expansion",
+  "Shard Key": "Shard Key",
   "SHARD_MERGE · {0} shards": "SHARD_MERGE · {0} shards",
   "SHARD_MERGE · {0} shards · {1} docs · {2}ms": "SHARD_MERGE · {0} shards · {1} docs · {2}ms",
   "Shard: {0}": "Shard: {0}",

src/documentdb/ClustersClient.ts

@@ -71,6 +71,7 @@ export interface DatabaseItemModel {
 export interface CollectionItemModel {
     name: string;
     type?: string;
+    shardKey?: Record<string, number | string>;
 }
 
 /**
@@ -602,7 +603,14 @@ export class ClustersClient {
         }
 
         const rawCollections = await this._mongoClient.db(databaseName).listCollections().toArray();
-        const collections: CollectionItemModel[] = rawCollections;
+        const collections: CollectionItemModel[] = rawCollections.map((c) => ({
+            name: c.name,
+            type: c.type,
+            shardKey:
+                'options' in c
+                    ? (c.options as { shardKey?: Record<string, number | string> } | undefined)?.shardKey
+                    : undefined,
+        }));
 
         this._collectionsCache.set(databaseName, collections);
 

src/tree/documentdb/CollectionItem.ts

@@ -137,6 +137,22 @@ export class CollectionItem implements TreeElement, TreeElementWithExperience, T
             md.appendMarkdown(`**${l10n.t('Documents')}:** ${formatDocumentCount(this.documentCount)}\n\n`);
         }
 
+        // Shard key
+        if (this.collectionInfo.shardKey) {
+            const shardKeyEntries = Object.entries(this.collectionInfo.shardKey);
+            if (shardKeyEntries.length > 0) {
+                const entries = shardKeyEntries
+                    .map(([k, v]) => {
+                        const escapedKey = escapeMarkdown(k);
+                        const valueText = typeof v === 'string' ? `"${v}"` : String(v);
+                        const escapedValue = escapeMarkdown(valueText);
+                        return `${escapedKey}: ${escapedValue}`;
+                    })
+                    .join(', ');
+                md.appendMarkdown(`**${l10n.t('Shard Key')}:** \`{ ${entries} }\`\n\n`);
+            }
+        }
+
         return md;
     }
 }