Phase2: Invoicecomputation/AdminpricingUI/Ainvoicemgnt

src/types/index.ts

@@ -520,3 +520,130 @@ export interface OrgBillingConfig {
   createdAt: string;
   updatedAt: string;
 }
+
+// ---------------------------------------------------------------------------
+// Billing — Phase 2: invoices and lines
+// ---------------------------------------------------------------------------
+
+export type InvoiceStatus =
+  | "draft"
+  | "open"
+  | "paid"
+  | "overdue"
+  | "void"
+  | "uncollectible";
+
+export type InvoicePaymentMethod = "invoice" | "card";
+
+export type InvoiceLineKind =
+  | "tenant_monthly"
+  | "tenant_setup"
+  | "ai_usage"
+  | "threema_messages"
+  | "skill_usage"
+  | "adjustment";
+
+/**
+ * Snapshot of the customer's billing details captured at invoice
+ * issue time. Subsequent edits to org_billing do not mutate
+ * historical invoices.
+ *
+ * Field names mirror OrgBilling (minus the timestamps) so the
+ * snapshot is a straightforward copy at issue time.
+ */
+export interface InvoiceBillingSnapshot {
+  companyName: string;
+  streetAddress: string;
+  postalCode: string;
+  city: string;
+  country: string;
+  vatNumber: string | null;
+  billingEmail: string;
+  notes: string | null;
+}
+
+/**
+ * One line on an invoice. The `metadata` shape varies by `kind`:
+ *   tenant_monthly:   { proration_days, days_in_month, billable_days, suspended_days }
+ *   tenant_setup:     {}
+ *   ai_usage:         { litellm_key_alias, spend_chf, requests }
+ *   threema_messages: { in_count, out_count, total_count }
+ *   skill_usage:      { skill_id, billable_days, event_count }
+ *   adjustment:       { reason, admin_user_id }
+ */
+export interface InvoiceLine {
+  id: string;
+  invoiceId: string;
+  tenantName: string | null;
+  kind: InvoiceLineKind;
+  description: string;
+  quantity: number;
+  unitLabel: string | null;
+  unitPriceChf: number;
+  amountChf: number;
+  metadata: Record<string, unknown> | null;
+  displayOrder: number;
+}
+
+/**
+ * Immutable invoice record. The PDF blob is fetched separately via
+ * the download endpoint to avoid loading bytea on every list query.
+ */
+export interface Invoice {
+  id: string;
+  invoiceNumber: string;
+  zitadelOrgId: string;
+  periodStart: string; // ISO date (YYYY-MM-DD)
+  periodEnd: string;
+  issuedAt: string;
+  dueAt: string;
+  subtotalChf: number;
+  vatRate: number;
+  vatAmountChf: number;
+  totalChf: number;
+  status: InvoiceStatus;
+  locale: string;
+  paymentMethod: InvoicePaymentMethod;
+  billingSnapshot: InvoiceBillingSnapshot;
+  stripePaymentIntentId: string | null;
+  pdfFilename: string | null;
+  hasPdf: boolean; // computed: pdf_data IS NOT NULL
+  adminNotes: string | null;
+  paidAt: string | null;
+  paidBy: string | null;
+  paidMethodDetail: string | null;
+  createdAt: string;
+}
+
+/** Invoice with its line items, used by detail views. */
+export interface InvoiceDetail {
+  invoice: Invoice;
+  lines: InvoiceLine[];
+}
+
+/**
+ * In-memory draft produced by the computation pipeline before the
+ * invoice is allocated a number and persisted. Used by both the
+ * preview endpoint (return without persisting) and the commit
+ * endpoint (compute → persist atomically).
+ */
+export interface InvoiceDraft {
+  zitadelOrgId: string;
+  periodStart: string;
+  periodEnd: string;
+  dueAt: string;
+  locale: string;
+  paymentMethod: InvoicePaymentMethod;
+  billingSnapshot: InvoiceBillingSnapshot;
+  lines: Omit<InvoiceLine, "id" | "invoiceId">[];
+  subtotalChf: number;
+  vatRate: number;
+  vatAmountChf: number;
+  totalChf: number;
+  /**
+   * Non-blocking warnings the compute pipeline surfaced — e.g.
+   * "tenant X has no LiteLLM team, AI usage skipped". Rendered in
+   * the admin UI to help the operator decide whether to commit.
+   */
+  warnings: string[];
+}