Download history to client

static/js/node_store.mjs

@@ -456,7 +456,24 @@ class NodeHistoryStore extends SimpleNodeStore {
 			request.onerror = (event) => reject(event.target.error)
 		})
 	}//}}}
-	retrievePage(uuid, perPage, page) {
+	hasNode(uuid, updated) {
+		return new Promise((resolve, reject) => {
+			const req = this.db
+				.transaction(['nodes', this.storeName], 'readonly')
+				.objectStore(this.storeName)
+				.getKey([uuid, updated])
+
+			req.onsuccess = (event) => {
+				resolve(event.target.result !== undefined)
+			}
+
+			req.onerror = (event) => {
+				console.log(event.target.error)
+				reject(event.target.error)
+			}
+		})
+	}
+	retrievePage(uuid, perPage, page) {// {{{
 		return new Promise((resolve, _reject) => {
 			const cursor = this.db
 				.transaction(['nodes', this.storeName], 'readonly')
@@ -497,10 +514,10 @@ class NodeHistoryStore extends SimpleNodeStore {
 				}
 			}
 		})
-	}
+	}// }}}
 }
 
-export function uuidv7() {
+export function uuidv7() {// {{{
 	// random bytes
 	const value = new Uint8Array(16)
 	crypto.getRandomValues(value)
@@ -524,6 +541,6 @@ export function uuidv7() {
 		.map((b) => b.toString(16).padStart(2, "0"))
 		.join("")
 	return `${str.slice(0, 8)}-${str.slice(8, 12)}-${str.slice(12, 16)}-${str.slice(16, 20)}-${str.slice(20)}`
-}
+}// }}}
 
 // vim: foldmethod=marker