Continue cert mgmt mvp

backend/src/services/certificate-authority/certificate-authority-dal.ts

@@ -1,10 +1,47 @@
 import { TDbClient } from "@app/db";
 import { TableName } from "@app/db/schemas";
+import { DatabaseError } from "@app/lib/errors";
 import { ormify } from "@app/lib/knex";
 
 export type TCertificateAuthorityDALFactory = ReturnType<typeof certificateAuthorityDALFactory>;
 
 export const certificateAuthorityDALFactory = (db: TDbClient) => {
   const caOrm = ormify(db, TableName.CertificateAuthority);
-  return caOrm;
+
+  const buildCertificateChain = async (caId: string) => {
+    try {
+      const result: {
+        caId: string;
+        parentCaId?: string;
+        certificate: string;
+      }[] = await db
+        .withRecursive("cte", (cte) => {
+          void cte
+            .select("ca.id as caId", "ca.parentCaId", "cert.certificate")
+            .from({ ca: TableName.CertificateAuthority })
+            .leftJoin({ cert: TableName.CertificateAuthorityCert }, "ca.id", "cert.caId")
+            .where("ca.id", caId)
+            .unionAll((builder) => {
+              void builder
+                .select("ca.id as caId", "ca.parentCaId", "cert.certificate")
+                .from({ ca: TableName.CertificateAuthority })
+                .leftJoin({ cert: TableName.CertificateAuthorityCert }, "ca.id", "cert.caId")
+                .innerJoin("cte", "cte.parentCaId", "ca.id");
+            });
+        })
+        .select("*")
+        .from("cte");
+
+      // Extract certificates and reverse the order to have the root CA at the end
+      const certChain: string[] = result.map((row) => row.certificate);
+      return certChain;
+    } catch (error) {
+      throw new DatabaseError({ error, name: "BuildCertificateChain" });
+    }
+  };
+
+  return {
+    ...caOrm,
+    buildCertificateChain
+  };
 };