Add SEO settings and root admin save flows

lib/app-config.ts

@@ -1,14 +1,45 @@
-import { prisma } from "@/lib/prisma";
-
+import { prisma } from "./prisma";
 export const MAINTENANCE_MODE_KEY = "maintenance_mode";
+export {
+  SITE_NAME_KEY,
+  SITE_SETTINGS_DEFAULT_OG_IMAGE_FIELD_KEY,
+  SITE_SETTINGS_ENTITY_ID,
+  SITE_SETTINGS_ENTITY_TYPE,
+  SITE_SETTINGS_FAVICON_FIELD_KEY,
+  SITE_SETTINGS_KEY,
+  DEFAULT_SITE_NAME,
+  buildDefaultSiteSettings,
+  getDefaultSiteSettingsMediaBindings,
+  parseSiteSettingsValue,
+  type SiteSettings,
+  type SiteSettingsMediaBindings,
+} from "./site-settings";
+import {
+  DEFAULT_SITE_NAME,
+  SITE_NAME_KEY,
+  SITE_SETTINGS_DEFAULT_OG_IMAGE_FIELD_KEY,
+  SITE_SETTINGS_ENTITY_ID,
+  SITE_SETTINGS_ENTITY_TYPE,
+  SITE_SETTINGS_FAVICON_FIELD_KEY,
+  SITE_SETTINGS_KEY,
+  buildDefaultSiteSettings,
+  getDefaultSiteSettingsMediaBindings,
+  parseSiteSettingsValue,
+  type SiteSettings,
+  type SiteSettingsMediaBindings,
+} from "./site-settings";
 
 export async function getMaintenanceMode(): Promise<boolean> {
-  const config = await prisma.appConfig.findUnique({
-    where: { key: MAINTENANCE_MODE_KEY },
-    select: { value: true },
-  });
+  try {
+    const config = await prisma.appConfig.findUnique({
+      where: { key: MAINTENANCE_MODE_KEY },
+      select: { value: true },
+    });
 
-  return config?.value === "true";
+    return config?.value === "true";
+  } catch {
+    return false;
+  }
 }
 
 export async function setMaintenanceMode(enabled: boolean): Promise<void> {
@@ -23,3 +54,81 @@ export async function setMaintenanceMode(enabled: boolean): Promise<void> {
     },
   });
 }
+
+export async function getSiteSettings(): Promise<SiteSettings> {
+  try {
+    const configs = await prisma.appConfig.findMany({
+      where: {
+        key: {
+          in: [SITE_SETTINGS_KEY, SITE_NAME_KEY],
+        },
+      },
+      select: {
+        key: true,
+        value: true,
+      },
+    });
+
+    const configMap = new Map(configs.map((config) => [config.key, config.value]));
+    const fallbackName = configMap.get(SITE_NAME_KEY) ?? DEFAULT_SITE_NAME;
+
+    return parseSiteSettingsValue(configMap.get(SITE_SETTINGS_KEY), fallbackName);
+  } catch {
+    return buildDefaultSiteSettings();
+  }
+}
+
+export async function updateSiteSettings(settings: SiteSettings): Promise<void> {
+  await prisma.appConfig.upsert({
+    where: { key: SITE_SETTINGS_KEY },
+    update: {
+      value: JSON.stringify(settings),
+    },
+    create: {
+      key: SITE_SETTINGS_KEY,
+      value: JSON.stringify(settings),
+    },
+  });
+}
+
+export async function getSiteSettingsMediaBindings(): Promise<SiteSettingsMediaBindings> {
+  try {
+    const usages = await prisma.mediaUsage.findMany({
+      where: {
+        entityType: SITE_SETTINGS_ENTITY_TYPE,
+        entityId: SITE_SETTINGS_ENTITY_ID,
+      },
+      include: {
+        asset: {
+          select: {
+            id: true,
+            url: true,
+          },
+        },
+      },
+    });
+
+    return usages.reduce<SiteSettingsMediaBindings>(
+      (result, usage) => {
+        if (usage.fieldKey === SITE_SETTINGS_FAVICON_FIELD_KEY) {
+          result.favicon = {
+            assetId: usage.asset.id,
+            url: usage.asset.url,
+          };
+        }
+
+        if (usage.fieldKey === SITE_SETTINGS_DEFAULT_OG_IMAGE_FIELD_KEY) {
+          result.defaultOgImage = {
+            assetId: usage.asset.id,
+            url: usage.asset.url,
+          };
+        }
+
+        return result;
+      },
+      getDefaultSiteSettingsMediaBindings(),
+    );
+  } catch {
+    return getDefaultSiteSettingsMediaBindings();
+  }
+}