import {
  calendarPickerOptions,
  calendarPickerTenantId,
  type CalendarPickerOption
} from "../src/features/calendar/calendarPickerLogic";

function assert(condition: unknown, message: string): void {
  if (!condition) throw new Error(message);
}

function calendar(id: string, name: string, isDefault = false): CalendarPickerOption {
  return {
    id,
    name,
    is_default: isDefault
  };
}

const input = [
  calendar("z", "Zulu"),
  calendar("b", "Bravo", true),
  calendar("a", "alpha")
];
const ordered = calendarPickerOptions(input);

assert(ordered.map((item) => item.id).join(",") === "b,a,z", "default calendar should lead, followed by names");
assert(input.map((item) => item.id).join(",") === "z,b,a", "picker sorting must not mutate API data");
assert(
  calendarPickerTenantId({ tenant: { id: "fallback" }, active_tenant: { id: "active" } }) === "active",
  "active tenant should partition picker requests"
);
assert(
  calendarPickerTenantId({ tenant: { id: "fallback" } }) === "fallback",
  "legacy tenant should remain a supported fallback"
);

console.log("Calendar picker behavior checks passed.");