[FEATURE] Basic System with file manager (#4)

Co-authored-by: dunemask <dunemask@gmail.com>
Co-authored-by: Dunemask <dunemask@gmail.com>
Reviewed-on: https://gitea.dunemask.dev/elysium/minecluster/pulls/4

lib/database/queries/server-queries.js

@@ -0,0 +1,41 @@
+import pg from "../postgres.js";
+import { deleteQuery, insertQuery, selectWhereQuery } from "../pg-query.js";
+import ExpressClientError from "../../util/ExpressClientError.js";
+const table = "servers";
+
+const asExpressClientError = (e) => {
+  throw new ExpressClientError({ m: e.message, c: 409 });
+};
+
+export async function createServerEntry(serverSpec) {
+  const { name, host, version, serverType: server_type, memory } = serverSpec;
+  const q = insertQuery(table, { name, host, version, server_type, memory });
+  return pg.query(q).catch(asExpressClientError);
+}
+
+export async function deleteServerEntry(serverName) {
+  if (!serverName) asExpressClientError({ message: "Server Name Required!" });
+  const q = deleteQuery(table, { name: serverName });
+  return pg.query(q).catch(asExpressClientError);
+}
+
+export async function getServerEntry(serverName) {
+  if (!serverName) asExpressClientError({ message: "Server Name Required!" });
+  const q = selectWhereQuery(table, { name: serverName });
+  try {
+    const serverSpecs = await pg.query(q);
+    if (serverSpecs.length === 0) return [];
+    if (!serverSpecs.length === 1)
+      throw Error("Multiple servers found with the same name!");
+    const {
+      name,
+      host,
+      version,
+      server_type: serverType,
+      memory,
+    } = serverSpecs[0];
+    return { name, host, version, serverType, memory };
+  } catch (e) {
+    asExpressClientError(e);
+  }
+}