Use oldest custom domain in deployment requests

packages/backend/src/database.ts

@@ -603,6 +603,25 @@ export class Database {
     return domains;
   }
 
+  async getOldestDomainByProjectId(
+    projectId: string,
+  ): Promise<Domain[]> {
+    const domainRepository = this.dataSource.getRepository(Domain);
+
+    const domains = await domainRepository.find({
+      where: {
+        project: {
+          id: projectId
+        },
+      },
+      order: {
+        createdAt: 'ASC'
+      }
+    });
+
+    return domains;
+  }
+
   async getLatestDNSDataByProjectId(
     projectId: string,
   ): Promise<DNSRecordAttributes | null> {

packages/backend/src/service.ts

@@ -663,6 +663,14 @@ export class Service {
     const address = await this.getAddress();
     const { repo, repoUrl } = await getRepoDetails(octokit, data.project.repository, data.commitHash);
     const environmentVariablesObj = await this.getEnvVariables(data.project!.id!);
+
+    // If a custom domain is present then use that as the DNS in the deployment request
+    const domain = await this.db.getOldestDomainByProjectId(data.projectId!);
+    let dns: string | undefined = undefined;
+    if (domain) {
+      dns = domain[0].name;
+    }
+
     // To set project DNS
     if (data.environment === Environment.Production) {
       // On deleting deployment later, project DNS deployment is also deleted
@@ -690,7 +698,7 @@ export class Service {
         lrn: deployer!.deployerLrn!,
         apiUrl: deployer!.deployerApiUrl!,
         environmentVariables: environmentVariablesObj,
-        dns: `${newDeployment.project.name}-${newDeployment.id}`,
+        dns: dns || `${newDeployment.project.name}-${newDeployment.id}`,
         payment: data.project.txHash,
         auctionId: data.project.auctionId,
         requesterAddress: address,