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#!/usr/bin/env python3
#
# Utility functions to parse the XLSX menu for the Daily Bulletin
# Copyright (C) 2024 Runxi Yu <https://runxiyu.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
from typing import Optional, Any
import email
import requests
import datetime
import logging
import os
import openpyxl
import common
logger = logging.getLogger(__name__)
def menu_item_fix(s: str) -> Optional[str]:
if not s:
return None
if s == "Condiments Selection\n葱，香菜，榨菜丝，老干妈，生抽，醋":
return None
return s.strip().replace("Biscuit /", "Biscuit/").replace("Juice /", "Juice/").replace(" \n", "\n").replace("\n ", "\n")
def parse_meal_table(rows: list[Any], initrow: int, t: list[str]) -> dict[str, dict[str, list[str]]]:
assert rows[initrow + 1][1].value is None
igroups = []
i = initrow + 2
while True:
c = rows[i][1]
if not isinstance(c, openpyxl.cell.MergedCell):
igroups.append(i)
i += 1
if len(igroups) >= len(t):
break
wgroups = dict(zip(igroups + [i], t + [None]))
ret: dict[str, dict[str, list[str]]] = {}
kmap = {}
for k in range(2, 7):
ret[rows[initrow + 1][k].value[0:3]] = {}
kmap[k] = rows[initrow + 1][k].value[0:3]
i = 0
wgroupskeys = list(wgroups.keys())
while i < len(wgroupskeys) - 1:
wgroup = wgroups[wgroupskeys[i]]
assert wgroup is not None
for km in ret:
ret[km][wgroup] = []
for j in range(wgroupskeys[i], wgroupskeys[i + 1]):
for k in range(2, 7):
v = menu_item_fix(rows[j][k].value)
if v:
ret[kmap[k]][wgroup].append(v)
i += 1
return ret
def parse_menus(datetime_target: datetime.datetime) -> dict[str, dict[str, dict[str, list[str]]]]:
logger.info("Parsing menus")
filename = "menu-%s.xlsx" % datetime_target.strftime("%Y%m%d")
wb = openpyxl.load_workbook(filename=filename)
ws = wb["菜单"]
rows = list(ws.iter_rows())
final = {}
i = -1
while i < len(rows) - 1:
i += 1
row = rows[i]
if not isinstance(row[1].value, str):
continue
elif "BREAKFAST" in row[1].value:
final["Breakfast"] = parse_meal_table(
rows,
i,
[
"Taste of Asia",
"Eat Global",
"Revolution Noodle",
"Piccola Italia",
"Self Pick-up", # instead of veg and soup
"Fruit/Drink",
],
)
elif "LUNCH" in row[1].value:
final["Lunch"] = parse_meal_table(
rows,
i,
[
"Taste of Asia",
"Eat Global",
"Revolution Noodle",
"Piccola Italia",
"Vegetarian",
"Daily Soup",
"Dessert/Fruit/Drink",
],
)
elif "DINNER" in row[1].value:
final["Dinner"] = parse_meal_table(
rows,
i,
[
"Taste of Asia",
"Eat Global",
"Revolution Noodle",
"Piccola Italia",
"Vegetarian",
"Daily Soup",
"Dessert/Fruit/Drink",
],
)
# elif "Students Snack" in row[1].value:
# parse_meal_table(rows, i)
return final
def download_menu(
token: str,
datetime_target: datetime.datetime,
weekly_menu_query_string: str,
weekly_menu_sender: str,
weekly_menu_subject_regex: str,
weekly_menu_subject_regex_four_groups: tuple[int, int, int, int],
menu_filename: str,
) -> None:
search_results = common.search_mail(token, weekly_menu_query_string)
for hit, matched_groups in common.filter_mail_results_by_subject_regex_groups(
common.filter_mail_results_by_sender(search_results, weekly_menu_sender),
weekly_menu_subject_regex,
weekly_menu_subject_regex_four_groups,
):
try:
subject_1st_month = datetime.datetime.strptime(matched_groups[0], "%b").month # issues here are probably locales
subject_1st_day = int(matched_groups[1])
except ValueError:
raise ValueError(hit["resource"]["subject"], matched_groups[0])
if subject_1st_month == datetime_target.month and subject_1st_day == datetime_target.day:
break
else:
raise ValueError("No menu email found")
with requests.get(
"https://graph.microsoft.com/v1.0/me/messages/%s/$value" % hit["hitId"],
headers={
"Authorization": "Bearer %s" % token,
"Accept-Encoding": "identity",
},
stream=True,
timeout=20,
) as r:
msg = email.message_from_bytes(r.content)
for part in msg.walk():
if part.get_content_type() in [
"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
]:
payload = part.get_payload(decode=True)
pb = bytes(payload)
with open(menu_filename, "wb") as w:
w.write(pb)
break
else:
raise ValueError("No proper attachment found in email")
def download_or_report_menu(token: str, datetime_target: datetime.datetime, weekly_menu_query_string: str, weekly_menu_sender: str, weekly_menu_subject_regex: str, weekly_menu_subject_regex_four_groups: tuple[int, int, int, int]) -> None:
menu_filename = "menu-%s.xlsx" % datetime_target.strftime("%Y%m%d")
if not (os.path.isfile(menu_filename)):
logger.info("Menu not found, downloading")
download_menu(
token,
datetime_target,
weekly_menu_query_string,
weekly_menu_sender,
weekly_menu_subject_regex,
weekly_menu_subject_regex_four_groups,
menu_filename,
)
assert os.path.isfile(menu_filename)
else:
logger.info("Menu already exists")
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