feat: add License validation + CRUD (src/lib/licenses.ts)

src/lib/licenses.ts

@@ -0,0 +1,131 @@
+import { z } from "zod";
+import { prisma } from "./prisma";
+
+export type LicenseType = "perpetual" | "subscription";
+
+export interface LicenseRecord {
+  id: string;
+  name: string;
+  vendor: string;
+  seats_total: number;
+  seats_used: number;
+  expiry_date: string | null;
+  license_type: LicenseType;
+  created_at: string;
+}
+
+export interface CreateLicenseInput {
+  name: string;
+  vendor: string;
+  seatsTotal: number;
+  expiryDate?: Date | null;
+  licenseType: LicenseType;
+}
+
+export type ValidationResult =
+  | { ok: true; value: CreateLicenseInput }
+  | { ok: false; error: string };
+
+// Mirrors src/lib/assets.ts's nonEmptyString helper.
+function nonEmptyString(message: string) {
+  return z.string({ required_error: message, invalid_type_error: message }).refine(
+    (value) => value.trim() !== "",
+    { message }
+  );
+}
+
+// Mirrors src/lib/assets.ts's dateString helper — accepts any string
+// Date.parse() can handle (e.g. "2026-07-31") and transforms it into a Date
+// for Prisma.
+function dateString(message: string) {
+  return z
+    .string({ required_error: message, invalid_type_error: message })
+    .refine((value) => !Number.isNaN(Date.parse(value)), { message })
+    .transform((value) => new Date(value));
+}
+
+const createLicenseSchema = z.object({
+  name: nonEmptyString("name is required and must be a non-empty string"),
+  vendor: nonEmptyString("vendor is required and must be a non-empty string"),
+  seatsTotal: z
+    .number({ required_error: "seatsTotal is required and must be a positive integer", invalid_type_error: "seatsTotal is required and must be a positive integer" })
+    .int({ message: "seatsTotal is required and must be a positive integer" })
+    .positive({ message: "seatsTotal is required and must be a positive integer" }),
+  expiryDate: dateString("expiryDate must be a valid date string").optional().nullable(),
+  licenseType: z.enum(["perpetual", "subscription"], {
+    errorMap: () => ({
+      message: "licenseType is required and must be either 'perpetual' or 'subscription'",
+    }),
+  }),
+});
+
+/**
+ * Validates raw (untyped) license-creation input. name/vendor must be
+ * non-empty strings, seatsTotal must be a positive integer, expiryDate is
+ * optional/nullable but must be a valid date string if present, licenseType
+ * must be one of the two enum values. seatsUsed is not accepted here — new
+ * licenses always start at 0 (same pattern as AssetItem always starting
+ * "in_stock"), seats are only ever consumed via other operations (once
+ * Assignment exists), not at creation.
+ */
+export function validateCreateLicenseInput(input: {
+  name?: unknown;
+  vendor?: unknown;
+  seatsTotal?: unknown;
+  expiryDate?: unknown;
+  licenseType?: unknown;
+}): ValidationResult {
+  const result = createLicenseSchema.safeParse(input);
+  if (!result.success) {
+    const message = result.error.issues[0]?.message ?? "Invalid input";
+    return { ok: false, error: message };
+  }
+  return { ok: true, value: result.data };
+}
+
+function toRecord(row: {
+  id: string;
+  name: string;
+  vendor: string;
+  seatsTotal: number;
+  seatsUsed: number;
+  expiryDate: Date | null;
+  licenseType: LicenseType;
+  createdAt: Date;
+}): LicenseRecord {
+  return {
+    id: row.id,
+    name: row.name,
+    vendor: row.vendor,
+    seats_total: row.seatsTotal,
+    seats_used: row.seatsUsed,
+    expiry_date: row.expiryDate ? row.expiryDate.toISOString() : null,
+    license_type: row.licenseType,
+    created_at: row.createdAt.toISOString(),
+  };
+}
+
+/**
+ * Creates a License. No unique constraint exists on `name` (unlike
+ * AssetItem.serialNumber), so unlike createAssetItem() there's no known
+ * Prisma error code to catch/translate here.
+ */
+export async function createLicense(input: CreateLicenseInput): Promise<LicenseRecord> {
+  const created = await prisma.license.create({
+    data: {
+      name: input.name,
+      vendor: input.vendor,
+      seatsTotal: input.seatsTotal,
+      expiryDate: input.expiryDate ?? null,
+      licenseType: input.licenseType,
+    },
+  });
+  return toRecord(created);
+}
+
+export async function listLicenses(): Promise<LicenseRecord[]> {
+  const rows = await prisma.license.findMany({
+    orderBy: [{ createdAt: "desc" }, { id: "desc" }],
+  });
+  return rows.map(toRecord);
+}