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| 1 | +const QUARTERS = [[0, 4], [0, 7], [0, 10], [1, 1]] |
| 2 | + |
| 3 | +func delivery_date(start: String, description: String): |
| 4 | + var now_details = Time.get_datetime_dict_from_datetime_string(start, true) |
| 5 | + var now_ts = Time.get_unix_time_from_datetime_string(start) |
| 6 | + var delivery = null |
| 7 | + var offset = 0 |
| 8 | + if description == "NOW": |
| 9 | + # NOW: Two hours after the meeting started |
| 10 | + offset = 2 * 60 * 60 |
| 11 | + elif description == "ASAP": |
| 12 | + # ASAP Before 12:00 => Today at 17:00 |
| 13 | + # ASAP After 12:00 => Tomorrow at 12:00 |
| 14 | + if now_details["hour"] <= 12: |
| 15 | + now_details["hour"] = 17 |
| 16 | + else: |
| 17 | + now_details["hour"] = 13 |
| 18 | + offset = 24 * 60 * 60 |
| 19 | + now_details["minute"] = 0 |
| 20 | + now_details["second"] = 0 |
| 21 | + elif description == "EOW": |
| 22 | + # EOW Monday, Tuesday, Wednesday => Friday at 17:00 |
| 23 | + # EOW Thursday or Friday => Sunday at 20:00 |
| 24 | + if now_details["weekday"] in [Time.WEEKDAY_MONDAY, Time.WEEKDAY_TUESDAY, Time.WEEKDAY_WEDNESDAY]: |
| 25 | + now_details["hour"] = 17 |
| 26 | + offset = 24 * 60 * 60 * (Time.WEEKDAY_FRIDAY - now_details["weekday"]) |
| 27 | + else: |
| 28 | + now_details["hour"] = 20 |
| 29 | + offset = 24 * 60 * 60 * (Time.WEEKDAY_SATURDAY + 1 - now_details["weekday"]) |
| 30 | + now_details["minute"] = 0 |
| 31 | + now_details["second"] = 0 |
| 32 | + elif description.ends_with("M"): |
| 33 | + # "<N>M" Before N-th month => At 8:00 on the first workday¹ of this year's N-th month |
| 34 | + # "<N>M" After or in N-th month => At 8:00 on the first workday¹ of next year's N-th month |
| 35 | + var target_month = int(description.rstrip("M")) |
| 36 | + if now_details["month"] >= target_month: |
| 37 | + now_details["year"] += 1 |
| 38 | + now_details["month"] = target_month |
| 39 | + now_details["day"] = 1 |
| 40 | + now_details["hour"] = 8 |
| 41 | + now_details["minute"] = 0 |
| 42 | + now_details["second"] = 0 |
| 43 | + |
| 44 | + # Ensure it is not a weekend -- compute day of week and roll forward to Monday. |
| 45 | + now_details = Time.get_datetime_dict_from_unix_time(Time.get_unix_time_from_datetime_dict(now_details)) |
| 46 | + if now_details["weekday"] == Time.WEEKDAY_SATURDAY: |
| 47 | + offset += 24 * 60 * 60 * 2 |
| 48 | + elif now_details["weekday"] == Time.WEEKDAY_SUNDAY: |
| 49 | + offset += 24 * 60 * 60 * 1 |
| 50 | + elif description[0] == "Q": |
| 51 | + # "Q<N>" Before or in N-th quarter² => At 8:00 on the last workday¹ of this year's N-th quarter² |
| 52 | + # "Q<N>" After N-th quarter² => At 8:00 on the last workday¹ of next year's N-th quarter² |
| 53 | + var quarter = int(description.lstrip("Q")) |
| 54 | + var current = ((now_details["month"] - 1) / 3) + 1 |
| 55 | + var year_offset = QUARTERS[quarter - 1][0] |
| 56 | + var month = QUARTERS[quarter - 1][1] |
| 57 | + if current > quarter: |
| 58 | + year_offset = 1 |
| 59 | + now_details = {"year": now_details["year"] + year_offset, "month": month, "day": 1, "hour": 8, "minute": 0, "second": 0} |
| 60 | + now_details = Time.get_datetime_dict_from_unix_time(Time.get_unix_time_from_datetime_dict(now_details) - 24 * 60 * 60 * 1) |
| 61 | + |
| 62 | + # Ensure it is not a weekend -- compute day of week and roll backward to Friday. |
| 63 | + if now_details["weekday"] == Time.WEEKDAY_SATURDAY: |
| 64 | + offset = 24 * 60 * 60 * -1 |
| 65 | + elif now_details["weekday"] == Time.WEEKDAY_SUNDAY: |
| 66 | + offset = 24 * 60 * 60 * -2 |
| 67 | + |
| 68 | + return Time.get_datetime_string_from_unix_time(Time.get_unix_time_from_datetime_dict(now_details) + offset) |
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