'use strict';
const assert = require('node:assert/strict');
const { buildOverview } = require('./days.js');

const ICS = `BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//test//test//EN
BEGIN:VEVENT
UID:standup-1@test
DTSTAMP:20260101T000000Z
DTSTART;TZID=UTC:20260105T090000
DTEND;TZID=UTC:20260105T093000
SUMMARY:Standup
RRULE:FREQ=WEEKLY;BYDAY=MO;COUNT=5
EXDATE;TZID=UTC:20260119T090000
END:VEVENT
BEGIN:VEVENT
UID:standup-1@test
RECURRENCE-ID;TZID=UTC:20260126T090000
DTSTAMP:20260101T000000Z
DTSTART;TZID=UTC:20260127T140000
DTEND;TZID=UTC:20260127T143000
SUMMARY:Standup (moved)
END:VEVENT
BEGIN:VEVENT
UID:trip-1@test
DTSTAMP:20260101T000000Z
DTSTART;VALUE=DATE:20260110
DTEND;VALUE=DATE:20260112
SUMMARY:💜 Weekend trip
END:VEVENT
BEGIN:VEVENT
UID:flight-1@test
DTSTAMP:20260101T000000Z
DTSTART;TZID=UTC:20260106T100000
DTEND;TZID=UTC:20260106T103000
SUMMARY:✈️ Flight to Spain
END:VEVENT
BEGIN:VEVENT
UID:party-1@test
DTSTAMP:20260101T000000Z
DTSTART;TZID=UTC:20260108T200000
DTEND;TZID=UTC:20260108T220000
SUMMARY:🎉 Party
END:VEVENT
BEGIN:VEVENT
UID:combo-1@test
DTSTAMP:20260101T000000Z
DTSTART;TZID=UTC:20260115T090000
DTEND;TZID=UTC:20260115T093000
SUMMARY:✈️💜 Trip with Tessa
END:VEVENT
BEGIN:VEVENT
UID:combo-2@test
DTSTAMP:20260101T000000Z
DTSTART;VALUE=DATE:20260122
DTEND;VALUE=DATE:20260123
SUMMARY:✈️ 💜 Madeira
END:VEVENT
BEGIN:VEVENT
UID:overlap-a@test
DTSTAMP:20260101T000000Z
DTSTART;TZID=UTC:20260109T090000
DTEND;TZID=UTC:20260109T100000
SUMMARY:✈️ Overlap A
END:VEVENT
BEGIN:VEVENT
UID:overlap-b@test
DTSTAMP:20260101T000000Z
DTSTART;TZID=UTC:20260109T093000
DTEND;TZID=UTC:20260109T110000
SUMMARY:💜 Overlap B
END:VEVENT
BEGIN:VEVENT
UID:overlap-resolved-a@test
DTSTAMP:20260101T000000Z
DTSTART;TZID=UTC:20260113T090000
DTEND;TZID=UTC:20260113T100000
SUMMARY:✈️ Overlap C nc
END:VEVENT
BEGIN:VEVENT
UID:quickadd-1@test
DTSTAMP:20260101T000000Z
DTSTART:20260116T070000Z
DTEND:20260116T080000Z
SUMMARY:Quick add
END:VEVENT
BEGIN:VEVENT
UID:overlap-resolved-b@test
DTSTAMP:20260101T000000Z
DTSTART;TZID=UTC:20260113T093000
DTEND;TZID=UTC:20260113T110000
SUMMARY:💜 Overlap D
END:VEVENT
END:VCALENDAR
`;

const tagsConfig = {
  '💜': { label: 'Partner Tessa', color: 'magenta' },
  '✈️': { label: 'Holidays', color: 'aqua' },
};

const overview = buildOverview(ICS, tagsConfig, '2026-01-01', '2026-01-31');

// plain weekly recurrence: morning segment, untagged -> muted
assert.deepEqual(overview['2026-01-05'].segments, ['muted', null, null]);
assert.match(overview['2026-01-05'].tooltip, /10:00 Standup/);

// EXDATE removes this occurrence entirely (nothing else touches this day)
assert.equal(overview['2026-01-19'], undefined);

// RECURRENCE-ID moved the Jan 26 occurrence away
assert.equal(overview['2026-01-26'], undefined);

// ...to Jan 27, 14:00 -> afternoon segment
assert.deepEqual(overview['2026-01-27'].segments, [null, 'muted', null]);
assert.match(overview['2026-01-27'].tooltip, /15:00 Standup \(moved\)/);

// all-day multi-day event with a known leading emoji lights every segment, both spanned days
assert.deepEqual(overview['2026-01-10'].segments, ['magenta', 'magenta', 'magenta']);
assert.deepEqual(overview['2026-01-11'].segments, ['magenta', 'magenta', 'magenta']);
assert.match(overview['2026-01-10'].tooltip, /All day 💜 Weekend trip/);

// DTEND is exclusive: Jan 12 is NOT part of the trip, but it IS a Monday standup
assert.deepEqual(overview['2026-01-12'].segments, ['muted', null, null]);

// leading emoji that IS in tagsConfig takes that entry's color, not re-prefixed in tooltip
assert.deepEqual(overview['2026-01-06'].segments, ['aqua', null, null]);
assert.equal(overview['2026-01-06'].tooltip, '11:00 ✈️ Flight to Spain');

// leading emoji NOT in tagsConfig still stands out (not muted) via the fallback color
assert.deepEqual(overview['2026-01-08'].segments, [null, null, 'blue']);
assert.equal(overview['2026-01-08'].tooltip, '21:00 🎉 Party');

// two consecutive leading emoji (no space between) split the segment into both colors
assert.deepEqual(overview['2026-01-15'].segments, [['aqua', 'magenta'], null, null]);
assert.equal(overview['2026-01-15'].tooltip, '10:00 ✈️💜 Trip with Tessa');
// single-emoji case (Jan 6, asserted above) still resolves to a plain string, not an array —
// the split path only triggers for a genuine two-emoji run.
assert.equal(Array.isArray(overview['2026-01-06'].segments[0]), false);

// two leading emoji WITH a space between them (how this calendar actually types combos) still split
assert.deepEqual(overview['2026-01-22'].segments, [['aqua', 'magenta'], ['aqua', 'magenta'], ['aqua', 'magenta']]);
assert.equal(overview['2026-01-22'].tooltip, 'All day ✈️ 💜 Madeira');

// two tagged events overlapping in time -> conflict flagged on their shared day
assert.equal(overview['2026-01-09'].conflict, true);
// a day with only one tagged event -> no conflict
assert.equal(overview['2026-01-06'].conflict, false);
// untagged (muted) events don't count as a conflict even when they overlap
assert.equal(overview['2026-01-05'].conflict, false);

// "nc" as a standalone word in the title marks that event's conflict as resolved
assert.equal(overview['2026-01-13'].conflict, false);

// bare Z-suffixed timestamp (no TZID, how Google's quick-add events are exported) is an
// absolute instant too -> displayed in Amsterdam local time (08:00 CET), not raw UTC (07:00)
assert.equal(overview['2026-01-16'].tooltip, '08:00 Quick add');

console.log('all assertions passed');