feat(templates): persist independent guide applications

app/admin/actions.ts

@@ -9,8 +9,11 @@ import {
   savePageDraft,
 } from "@/lib/content/mutations";
 import { dataSourceSnapshotSchema } from "@/lib/content/data-source";
+import { slugSchema } from "@/lib/content/lifecycle";
 import type { DataSourceSnapshot, PageSnapshot } from "@/lib/content/types";
 import { requireAdmin } from "@/lib/auth/server";
+import { builtInTemplates } from "@/lib/templates";
+import { persistTemplateApplication } from "@/lib/templates/persist";
 
 const serializedBlockSchema = z.strictObject({
   id: z.string().uuid(),
@@ -132,3 +135,56 @@ export async function createEditorRevision(
   const id = await createNamedRevision(parsed.data, safeLabel.data, admin.user.id);
   return id ? { status: "saved", id } : { status: "error" };
 }
+
+const templateApplicationSchema = z.strictObject({
+  templateSlug: z.string().min(1).max(120),
+  characterSlug: slugSchema,
+  nameTh: z.string().trim().min(1).max(160),
+  nameEn: z.string().trim().max(160).optional(),
+  description: z.string().trim().max(2_000).optional(),
+});
+
+export async function applyEditorTemplate(input: unknown): Promise<
+  | { status: "created"; location: string }
+  | { status: "validation-error"; issues: string[] }
+  | { status: "error"; message: string }
+> {
+  const admin = await requireAdmin();
+  const parsed = templateApplicationSchema.safeParse(input);
+  if (!parsed.success) {
+    return {
+      status: "validation-error",
+      issues: parsed.error.issues.map((issue) => issue.message),
+    };
+  }
+  const template = builtInTemplates.find(
+    (candidate) => candidate.slug === parsed.data.templateSlug,
+  );
+  if (!template) {
+    return { status: "validation-error", issues: ["ไม่พบเทมเพลต"] };
+  }
+  if (process.env.BUZZ_DEMO_MODE === "true") {
+    return { status: "created", location: "/admin/astra/info" };
+  }
+  try {
+    const applied = await persistTemplateApplication(
+      template,
+      {
+        slug: parsed.data.characterSlug,
+        nameTh: parsed.data.nameTh,
+        nameEn: parsed.data.nameEn,
+        description: parsed.data.description,
+      },
+      admin.user.id,
+    );
+    return {
+      status: "created",
+      location: `/admin/${applied.characterSlug}/${applied.firstPageSlug}`,
+    };
+  } catch (cause) {
+    return {
+      status: "error",
+      message: cause instanceof Error ? cause.message : "สร้างคู่มือไม่สำเร็จ",
+    };
+  }
+}