feat: add onboarding with oldmarr import (#1606)

packages/old-import/src/analyse/analyse-oldmarr-import.ts

@@ -0,0 +1,64 @@
+import AdmZip from "adm-zip";
+import { z } from "zod";
+
+import { logger } from "@homarr/log";
+import { oldmarrConfigSchema } from "@homarr/old-schema";
+
+import { oldmarrImportUserSchema } from "../user-schema";
+import type { analyseOldmarrImportInputSchema } from "./input";
+
+export const analyseOldmarrImportForRouterAsync = async (input: z.infer<typeof analyseOldmarrImportInputSchema>) => {
+  const { configs, checksum, users } = await analyseOldmarrImportAsync(input.file);
+
+  return {
+    configs,
+    checksum,
+    userCount: users.length,
+  };
+};
+
+export const analyseOldmarrImportAsync = async (file: File) => {
+  const arrayBuffer = await file.arrayBuffer();
+  const zip = new AdmZip(Buffer.from(arrayBuffer));
+  const entries = zip.getEntries();
+  const configEntries = entries.filter((entry) => entry.entryName.endsWith(".json") && !entry.entryName.includes("/"));
+  const configs = configEntries.map((entry) => {
+    const result = oldmarrConfigSchema.safeParse(JSON.parse(entry.getData().toString()));
+    if (!result.success) {
+      logger.error(`Failed to parse config ${entry.entryName} with error: ${JSON.stringify(result.error)}`);
+    }
+
+    return {
+      name: entry.name,
+      config: result.data ?? null,
+      isError: !result.success,
+    };
+  });
+
+  const userEntry = entries.find((entry) => entry.entryName === "users/users.json");
+  const users = parseUsers(userEntry);
+
+  const checksum = entries
+    .find((entry) => entry.entryName === "checksum.txt")
+    ?.getData()
+    .toString("utf-8");
+
+  return {
+    configs,
+    users,
+    checksum,
+  };
+};
+
+export type AnalyseResult = Awaited<ReturnType<typeof analyseOldmarrImportForRouterAsync>>;
+
+const parseUsers = (entry: AdmZip.IZipEntry | undefined) => {
+  if (!entry) return [];
+
+  const result = z.array(oldmarrImportUserSchema).safeParse(JSON.parse(entry.getData().toString()));
+  if (!result.success) {
+    logger.error(`Failed to parse users with error: ${JSON.stringify(result.error)}`);
+  }
+
+  return result.data ?? [];
+};

packages/old-import/src/analyse/index.ts

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+export * from "./input";
+export { analyseOldmarrImportForRouterAsync } from "./analyse-oldmarr-import";

packages/old-import/src/analyse/input.ts

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+import { zfd } from "zod-form-data";
+
+export const analyseOldmarrImportInputSchema = zfd.formData({
+  file: zfd.file(),
+});

packages/old-import/src/analyse/types.ts

@@ -0,0 +1,7 @@
+import type { Modify } from "@homarr/common/types";
+import type { OldmarrConfig } from "@homarr/old-schema";
+
+import type { AnalyseResult } from "./analyse-oldmarr-import";
+
+export type AnalyseConfig = AnalyseResult["configs"][number];
+export type ValidAnalyseConfig = Modify<AnalyseConfig, { config: OldmarrConfig }>;