Merge Lightning backend into Mempool backend

backend/src/api/lightning/lnd/lnd-api.ts

@@ -0,0 +1,44 @@
+import { AbstractLightningApi } from '../lightning-api-abstract-factory';
+import { ILightningApi } from '../lightning-api.interface';
+import * as fs from 'fs';
+import * as lnService from 'ln-service';
+import config from '../../../config';
+import logger from '../../../logger';
+
+class LndApi implements AbstractLightningApi {
+  private lnd: any;
+  constructor() {
+    if (!config.LIGHTNING.ENABLED) {
+      return;
+    }
+    try {
+      const tls = fs.readFileSync(config.LND_NODE_AUTH.TLS_CERT_PATH).toString('base64');
+      const macaroon = fs.readFileSync(config.LND_NODE_AUTH.MACAROON_PATH).toString('base64');
+
+      const { lnd } = lnService.authenticatedLndGrpc({
+        cert: tls,
+        macaroon: macaroon,
+        socket: config.LND_NODE_AUTH.SOCKET,
+      });
+
+      this.lnd = lnd;
+    } catch (e) {
+      logger.err('Could not initiate the LND service handler: ' + (e instanceof Error ? e.message : e));
+      process.exit(1);
+    }
+  }
+
+  async $getNetworkInfo(): Promise<ILightningApi.NetworkInfo> {
+    return await lnService.getNetworkInfo({ lnd: this.lnd });
+  }
+
+  async $getNetworkGraph(): Promise<ILightningApi.NetworkGraph> {
+    return await lnService.getNetworkGraph({ lnd: this.lnd });
+  }
+
+  async $getChanInfo(id: string): Promise<ILightningApi.Channel> {
+    return await lnService.getChannel({ lnd: this.lnd, id });
+  }
+}
+
+export default LndApi;