import { Organization } from 'fhir/r4';

// Mirrors the server's organization-invoice-terms.ts - the server WRITES this exact URL, the plugin
// READS it back - so the literal MUST match byte for byte.
export const ORGANIZATION_INVOICE_DEFAULT_TERMS_EXTENSION_URL =
    'https://akashichealthrecords.com/fhir/StructureDefinition/organization-invoice-default-terms';

// Pure reader - the org's default invoice payment terms as net days (0 = due on receipt; 15/30/60/90).
// Default when absent = 30 (net-30, the common practice default), matching the server's getDefaultNetDays.
// A stored 0 (due on receipt) is preserved, not treated as "absent".
export const getDefaultNetDays = (org?: Organization): number => {
    const value = org?.extension?.find(
        (e) => e.url === ORGANIZATION_INVOICE_DEFAULT_TERMS_EXTENSION_URL,
    )?.valueInteger;
    return typeof value === 'number' && Number.isFinite(value) ? value : 30;
};

// Mirrors the server's organization-invoice-terms.ts ORG_ALLOW_PARTIAL_PAYMENTS_EXTENSION_URL (Task 5a) -
// the server WRITES this exact URL via the same organization-invoice-terms PUT, the plugin READS it back -
// so the literal MUST match byte for byte. Uses the `/fhir/extensions/` convention (like tz-code), not the
// `/fhir/StructureDefinition/` convention above - intentional, matches the server literal.
export const ORGANIZATION_ALLOW_PARTIAL_PAYMENTS_EXTENSION_URL =
    'https://akashichealthrecords.com/fhir/extensions/organization-allow-partial-payments';

// Pure reader - whether the org allows partial payment by default. This is the org-wide house default a
// billing:manage user sets; a new invoice's own allow-partial-pay toggle seeds from it. Default when
// absent = false (privacy/simplicity-first - off unless the org turns it on), matching the server's
// getOrgAllowPartialPayments.
export const getOrgAllowPartialPayments = (org?: Organization): boolean =>
    org?.extension?.find((e) => e.url === ORGANIZATION_ALLOW_PARTIAL_PAYMENTS_EXTENSION_URL)?.valueBoolean ??
    false;