export default {
  functionName: 'findAvailableSlots',
  prompt: `// Write an async JavaScript function 'findAvailableSlots' to find mutual available meeting times for two people.
// - The function must accept two calendars (arrays of busy slots) and a constraints object.
// - Calendar format: [{ start: 'ISODateString', end: 'ISODateString' }, ...]
// - Constraints format: { durationMinutes: number, searchRange: { start: 'ISODateString', end: 'ISODateString' }, workHours: { start: 'HH:mm', end: 'HH:mm' } }
// - You MUST use a dynamic import() to load one or more libraries from a CDN for date/time manipulation.
// - The function should find all non-overlapping time slots of 'durationMinutes' where both parties are free, within their working hours, and within the search range.
// - Return an array of available slots, each as an object: { start: 'ISODateString', end: 'ISODateString' }`,
  getTestCases: () => {
    const today = new Date().toISOString().split('T')[0];
    const calendar1 = [
      { start: `${today}T09:00:00.000Z`, end: `${today}T10:30:00.000Z` },
      { start: `${today}T12:00:00.000Z`, end: `${today}T13:00:00.000Z` },
    ];
    const calendar2 = [
      { start: `${today}T10:00:00.000Z`, end: `${today}T11:00:00.000Z` },
      { start: `${today}T14:00:00.000Z`, end: `${today}T14:30:00.000Z` },
    ];
    const constraints = {
      durationMinutes: 60,
      searchRange: { start: `${today}T00:00:00.000Z`, end: `${today}T23:59:59.999Z` },
      workHours: { start: '09:00', end: '17:00' }
    };
    return [calendar1, calendar2, constraints];
  },
  runTest: async (findAvailableSlots) => {
    const assert = {
      deepStrictEqual: (a, e, m) => { if (JSON.stringify(a) !== JSON.stringify(e)) throw new Error(m || `FAIL: ${JSON.stringify(a)} !== ${JSON.stringify(e)}`) },
    };
    const [calendar1, calendar2, constraints] = globalThis.getTestCases ? globalThis.getTestCases() : this.getTestCases();
    const today = new Date().toISOString().split('T')[0];
    const expected = [
      { start: `${today}T11:00:00.000Z`, end: `${today}T12:00:00.000Z` },
      { start: `${today}T13:00:00.000Z`, end: `${today}T14:00:00.000Z` },
      { start: `${today}T14:30:00.000Z`, end: `${today}T15:30:00.000Z` },
      { start: `${today}T15:30:00.000Z`, end: `${today}T16:30:00.000Z` },
    ];
    const result = await findAvailableSlots(calendar1, calendar2, constraints);
    assert.deepStrictEqual(result, expected, 'Test Failed: Incorrect slots found.');
  }
};