feat: add database reconciler

command/db.ts

@@ -0,0 +1,83 @@
+import { defineCommand } from "citty";
+import { ctx } from "../lib/context";
+import {
+  DATABASE_HOST,
+  DATABASE_PORT,
+  buildDatabaseUrl,
+  getComposePostgresClaims,
+  getRoleCredentials,
+} from "../lib/database";
+import { toTable } from "../lib/format";
+
+const list = defineCommand({
+  meta: {
+    name: "ls",
+    description: "List managed postgres claims",
+  },
+  async run() {
+    const claims = getComposePostgresClaims(await ctx().compose());
+    if (claims.length === 0) {
+      console.log("No managed postgres volumes declared");
+      return;
+    }
+
+    console.log(
+      toTable(
+        claims.map((claim) => ({
+          service: claim.service,
+          username: claim.username,
+          database: claim.database,
+          secret: claim.secretName,
+        })),
+      ),
+    );
+  },
+});
+
+const creds = defineCommand({
+  meta: {
+    name: "creds",
+    description: "Print postgres credentials for a service",
+  },
+  async run({ args }) {
+    const service = args._[0];
+    if (!service) throw new Error("Service name is required");
+
+    const claim = getComposePostgresClaims(await ctx().compose()).find(
+      (entry) => entry.service === service,
+    );
+    if (!claim) {
+      throw new Error(
+        `Service ${service} does not declare a managed postgres volume.`,
+      );
+    }
+
+    const credentials = await getRoleCredentials(claim.username);
+    const url = buildDatabaseUrl(claim, credentials);
+
+    console.log(
+      toTable([
+        {
+          service: claim.service,
+          username: credentials.username,
+          database: claim.database,
+          host: DATABASE_HOST,
+          port: DATABASE_PORT,
+          secret: claim.secretName,
+        },
+      ]),
+    );
+    console.log(`DATABASE_URL=${url}`);
+  },
+});
+
+export const db = defineCommand({
+  meta: {
+    name: "db",
+    description: "Inspect managed postgres databases",
+  },
+  subCommands: {
+    creds,
+    ls: list,
+  },
+});