import { Organization } from 'fhir/r4';

export const ORG_FORM_SUBMISSION_NOTIFICATIONS_EXTENSION_URL =
    'https://akashichealthrecords.com/fhir/StructureDefinition/organization-form-submission-notifications';

export interface FormSubmissionNotificationSettings { enabled: boolean; recipients: string[]; }

export const getFormSubmissionNotifications = (
    organization?: Organization | null,
): FormSubmissionNotificationSettings | undefined => {
    const ext = organization?.extension?.find(e => e.url === ORG_FORM_SUBMISSION_NOTIFICATIONS_EXTENSION_URL);
    if (!ext) return undefined;
    const enabled = ext.extension?.find(s => s.url === 'enabled')?.valueBoolean ?? true;
    const recipients = (ext.extension ?? [])
        .filter(s => s.url === 'recipient')
        .map(s => s.valueString)
        .filter((v): v is string => !!v);
    return { enabled, recipients };
};

// Effective/default for display: enabled + seeded from org contact email when nothing saved yet (R4).
export const getEffectiveFormSubmissionNotifications = (
    organization?: Organization | null,
): FormSubmissionNotificationSettings => {
    const saved = getFormSubmissionNotifications(organization);
    if (saved) return saved;
    const email = organization?.telecom?.find(t => t.system === 'email' && !!t.value)?.value;
    return { enabled: true, recipients: email ? [email] : [] };
};