refactoring

Resolve #7779

packages/backend/src/db/elasticsearch.ts

@@ -0,0 +1,56 @@
+import * as elasticsearch from '@elastic/elasticsearch';
+import config from '@/config/index';
+
+const index = {
+	settings: {
+		analysis: {
+			analyzer: {
+				ngram: {
+					tokenizer: 'ngram'
+				}
+			}
+		}
+	},
+	mappings: {
+		properties: {
+			text: {
+				type: 'text',
+				index: true,
+				analyzer: 'ngram',
+			},
+			userId: {
+				type: 'keyword',
+				index: true,
+			},
+			userHost: {
+				type: 'keyword',
+				index: true,
+			}
+		}
+	}
+};
+
+// Init ElasticSearch connection
+const client = config.elasticsearch ? new elasticsearch.Client({
+	node: `${config.elasticsearch.ssl ? 'https://' : 'http://'}${config.elasticsearch.host}:${config.elasticsearch.port}`,
+	auth: (config.elasticsearch.user && config.elasticsearch.pass) ? {
+		username: config.elasticsearch.user,
+		password: config.elasticsearch.pass
+	} : undefined,
+	pingTimeout: 30000
+}) : null;
+
+if (client) {
+	client.indices.exists({
+		index: config.elasticsearch.index || 'misskey_note',
+	}).then(exist => {
+		if (!exist.body) {
+			client.indices.create({
+				index: config.elasticsearch.index || 'misskey_note',
+				body: index
+			});
+		}
+	});
+}
+
+export default client;