feat: add server settings (#487)

* feat: add server settings

* feat: remove old migration

* feat: add new migrations

* refactor: format

* fix: build error

* refactor: format

* fix: lint

packages/api/src/router/serverSettings.ts

@@ -0,0 +1,43 @@
+import SuperJSON from "superjson";
+
+import { eq } from "@homarr/db";
+import { serverSettings } from "@homarr/db/schema/sqlite";
+import type { ServerSettings } from "@homarr/server-settings";
+import { defaultServerSettingsKeys } from "@homarr/server-settings";
+import { z } from "@homarr/validation";
+
+import { createTRPCRouter, protectedProcedure } from "../trpc";
+
+export const serverSettingsRouter = createTRPCRouter({
+  getAll: protectedProcedure.query(async ({ ctx }) => {
+    const settings = await ctx.db.query.serverSettings.findMany();
+
+    const data = {} as ServerSettings;
+    defaultServerSettingsKeys.forEach((key) => {
+      const settingValue = settings.find(
+        (setting) => setting.settingKey === key,
+      )?.value;
+      if (!settingValue) {
+        return;
+      }
+      data[key] = SuperJSON.parse(settingValue);
+    });
+    return data;
+  }),
+  saveSettings: protectedProcedure
+    .input(
+      z.object({
+        settingsKey: z.enum(defaultServerSettingsKeys),
+        value: z.record(z.string(), z.unknown()),
+      }),
+    )
+    .mutation(async ({ ctx, input }) => {
+      const databaseRunResult = await ctx.db
+        .update(serverSettings)
+        .set({
+          value: SuperJSON.stringify(input.value),
+        })
+        .where(eq(serverSettings.settingKey, input.settingsKey));
+      return databaseRunResult.changes === 1;
+    }),
+});