245 lines
7.8 KiB
Python
245 lines
7.8 KiB
Python
import configparser
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import json
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import os
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import typing
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import warnings
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from datetime import date, datetime, timedelta, timezone
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from decimal import Decimal
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from time import time as unixtime
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import dateutil
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import dateutil.parser
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import exchange_calendars
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import holidays
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import pandas
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import pytz
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import requests
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from dateutil.easter import easter
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# from agenda import spacexdata
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warnings.simplefilter(action="ignore", category=FutureWarning)
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# deadline to file tax return
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# credit card expiry dates
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# morzine ski lifts
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# chalet availablity calendar
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# sunrise and sunset
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# starlink visible
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here = dateutil.tz.tzlocal()
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now = datetime.now()
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today = now.date()
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now_str = now.strftime("%Y-%m-%d_%H:%M")
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now_utc = datetime.now(timezone.utc)
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next_us_presidential_election = date(2024, 11, 5)
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next_uk_general_election = date(2024, 5, 2)
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config_filename = os.path.join(os.path.dirname(__file__), "..", "config")
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assert os.path.exists(config_filename)
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config = configparser.ConfigParser()
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config.read(config_filename)
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access_key = config.get("exchangerate", "access_key")
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data_dir = config.get("data", "dir")
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def next_uk_mothers_day() -> date:
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"""Calculate the date of the next UK Mother's Day from the current date."""
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current_year = date.today().year
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easter_date = easter(current_year)
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# Calculate the date of Mother's Day, which is the fourth Sunday of Lent
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mothers_day = easter_date + timedelta(weeks=3)
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# Check if Mother's Day has already passed this year
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today = date.today()
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if today > mothers_day:
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# If it has passed, calculate for the next year
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current_year += 1
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easter_date = easter(current_year)
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mothers_day = easter_date + timedelta(weeks=3)
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return mothers_day
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def next_uk_fathers_day() -> date:
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"""Calculate the date of the next UK Father's Day from the current date."""
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# Get the current date
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today = date.today()
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# Calculate the day of the week for the current date (0 = Monday, 6 = Sunday)
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current_day_of_week = today.weekday()
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# Calculate the number of days until the next Sunday
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days_until_sunday = (6 - current_day_of_week) % 7
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# Calculate the date of the next Sunday
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next_sunday = today + timedelta(days=days_until_sunday)
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# Calculate the date of Father's Day, which is the third Sunday of June
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fathers_day = date(next_sunday.year, 6, 1) + timedelta(
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weeks=2, days=next_sunday.weekday()
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)
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# Check if Father's Day has already passed this year
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if today > fathers_day:
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# If it has passed, calculate for the next year
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fathers_day = date(fathers_day.year + 1, 6, 1) + timedelta(
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weeks=2, days=next_sunday.weekday()
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)
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return fathers_day
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def get_next_timezone_transition(tz_name: str) -> datetime:
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"""Datetime of the next time the clocks change."""
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tz = pytz.timezone(tz_name)
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dt = next(t for t in tz._utc_transition_times if t > now)
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return typing.cast(datetime, dt)
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def get_next_bank_holiday() -> dict[str, date | str]:
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"""Date and name of the next UK bank holiday."""
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url = "https://www.gov.uk/bank-holidays.json"
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filename = os.path.join(data_dir, "bank-holidays.json")
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mtime = os.path.getmtime(filename)
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if (unixtime() - mtime) > 3600: # one hour
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r = requests.get(url)
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open(filename, "w").write(r.text)
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events = json.load(open(filename))["england-and-wales"]["events"]
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next_holiday = None
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for event in events:
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event_date = datetime.strptime(event["date"], "%Y-%m-%d").date()
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if event_date < today:
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continue
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next_holiday = {"date": event_date, "title": event["title"]}
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break
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assert next_holiday
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return next_holiday
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def get_gbpusd() -> Decimal:
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"""Get the current value for GBPUSD, with caching."""
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fx_dir = os.path.join(data_dir, "fx")
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existing_data = os.listdir(fx_dir)
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existing = [f for f in existing_data if f.endswith("_GBPUSD.json")]
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if existing:
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recent_filename = max(existing)
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recent = datetime.strptime(recent_filename, "%Y-%m-%d_%H:%M_GBPUSD.json")
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delta = now - recent
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if existing and delta < timedelta(hours=6):
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full = os.path.join(fx_dir, recent_filename)
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data = json.load(open(full), parse_float=Decimal)
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if "quotes" in data and "USDGBP" in data["quotes"]:
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return typing.cast(Decimal, 1 / data["quotes"]["USDGBP"])
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url = "http://api.exchangerate.host/live"
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params = {"currencies": "GBP,USD", "access_key": access_key}
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filename = f"{fx_dir}/{now_str}_GBPUSD.json"
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r = requests.get(url, params=params)
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open(filename, "w").write(r.text)
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data = json.loads(r.text, parse_float=Decimal)
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return typing.cast(Decimal, 1 / data["quotes"]["USDGBP"])
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def next_economist() -> date:
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"""Next date that the Economist is published."""
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# TODO: handle the Christmas double issue correctly
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return today + timedelta((3 - today.weekday()) % 7)
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def timedelta_display(delta: timedelta) -> str:
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"""Format timedelta as a human readable string."""
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total_seconds = int(delta.total_seconds())
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days, remainder = divmod(total_seconds, 24 * 60 * 60)
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hours, remainder = divmod(remainder, 60 * 60)
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mins, secs = divmod(remainder, 60)
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return " ".join(
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f"{v:>3} {label}"
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for v, label in ((days, "days"), (hours, "hrs"), (mins, "mins"))
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if v
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)
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def stock_markets() -> list[str]:
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"""Stock markets open and close times."""
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# The trading calendars code is slow, maybe there is a faster way to do this
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# Or we could cache the result
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now = pandas.Timestamp.now(timezone.utc)
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now_local = pandas.Timestamp.now(here)
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markets = [
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("XLON", "London"),
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("XNYS", "US"),
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]
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reply = []
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for code, label in markets:
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cal = exchange_calendars.get_calendar(code)
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if cal.is_open_on_minute(now_local):
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next_close = cal.next_close(now).tz_convert(here)
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next_close = next_close.replace(minute=round(next_close.minute, -1))
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delta_close = timedelta_display(next_close - now_local)
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prev_open = cal.previous_open(now).tz_convert(here)
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prev_open = prev_open.replace(minute=round(prev_open.minute, -1))
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delta_open = timedelta_display(now_local - prev_open)
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msg = (
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f"{label:>6} market opened {delta_open} ago, "
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+ f"closes in {delta_close} ({next_close:%H:%M})"
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)
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else:
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ts = cal.next_open(now)
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ts = ts.replace(minute=round(ts.minute, -1))
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ts = ts.tz_convert(here)
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delta = timedelta_display(ts - now_local)
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msg = f"{label:>6} market opens in {delta}" + (
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f" ({ts:%H:%M})" if (ts - now_local) < timedelta(days=1) else ""
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)
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reply.append(msg)
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return reply
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def get_us_holiday() -> dict[str, date | str]:
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"""Date and name of next US holiday."""
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hols = holidays.UnitedStates(years=[today.year, today.year + 1])
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next_hol = next(x for x in sorted(hols.items()) if x[0] >= today)
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return {"date": next_hol[0], "title": next_hol[1]}
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def get_data() -> dict[str, str | object]:
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"""Get data to display on agenda dashboard."""
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reply = {
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"now": now,
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"gbpusd": get_gbpusd(),
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"next_economist": next_economist(),
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"bank_holiday": get_next_bank_holiday(),
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"us_holiday": get_us_holiday(),
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"next_uk_general_election": next_uk_general_election,
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"next_us_presidential_election": next_us_presidential_election,
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# "spacex": spacexdata.get_next_spacex_launch(limit=20),
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"stock_markets": stock_markets(),
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"uk_clock_change": get_next_timezone_transition("Europe/London"),
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"us_clock_change": get_next_timezone_transition("America/New_York"),
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"mothers_day": next_uk_mothers_day(),
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"fathers_day": next_uk_fathers_day(),
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}
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return reply
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