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#!/usr/bin/env python3
"""Convert some funky reminders JSON data to todo.txt."""
from __future__ import annotations
import datetime
import json
import sys
from dataclasses import dataclass
@dataclass(frozen=True)
class TodoEntry:
index: int
title: str | None
notes: str | None
completed: bool
priority: int
completion_date: datetime.datetime | None
creation_date: datetime.datetime | None
due_date: datetime.datetime | None
url: str | None
@staticmethod
def from_str(string: str) -> TodoEntry:
words = string.split()
# Strip from left to find completion
if words[0] == "x":
completed = True
del words[0]
else:
completed = False
# Strip from left to find priority
if len(words[0]) == 3 and words[0].startswith("(") and words[0].endswith(")"):
if words[0] == "(A)":
priority = 9
elif words[0] == "(B)":
priority = 5
else:
priority = 1
else:
priority = 0
# Strip from left to find dates
try:
creation_date = datetime.date.fromisoformat(words[0])
except ValueError:
creation_date = None
completion_date = None
else:
creation_date = datetime.datetime.combine(
creation_date,
datetime.time.min,
datetime.timezone.utc,
)
del words[0]
try:
completion_date = datetime.date.fromisoformat(words[0])
except ValueError:
completion_date = None
else:
completion_date = datetime.datetime.combine(
completion_date,
datetime.time.min,
datetime.timezone.utc,
)
del words[0]
# Strip from right to find meta
meta = {}
while words and ":" in words[-1][1:-1]:
k, v = words.pop(-1).split(":", maxsplit=1)
if k == "due":
v = datetime.date.fromisoformat(v)
v = datetime.datetime.combine(
v,
datetime.time.min,
datetime.timezone.utc,
)
if k == "index":
v = int(v)
if k in meta:
raise ValueError(f"duplicate meta tag {k}")
meta[k] = v
# Strip from right to find context and project
tags = []
while words and (words[-1].startswith("+") or words[-1].startswith("@")):
tags.append("#" + words.pop(-1)[1:])
# Split the rest into title :: notes
rest = " ".join(words)
title, *rest = rest.split(" :: ", maxsplit=1)
if rest:
notes = rest[0]
else:
notes = None
if "https" in meta:
url = "https:" + meta.pop("https")
elif "http" in meta:
url = "http:" + meta.pop("http")
else:
url = None
entry = TodoEntry(
index=meta.pop("index", -1),
title=title,
notes=notes,
completed=completed,
priority=priority,
creation_date=creation_date,
completion_date=completion_date,
due_date=meta.pop("due", None),
url=url,
)
if meta:
raise ValueError(f"Unconsumed meta: {meta}")
return entry
def __str__(self) -> str:
bits = []
# Completion
if self.completed:
bits.append("x")
# Reduce priority to 9->high->A, 5->medium->B, 1->low->C
if self.priority > 6:
bits.append("(A)")
elif self.priority > 3:
bits.append("(B)")
elif self.priority > 0:
bits.append("(C)")
# Creation date required so default if absent
if self.creation_date is None:
bits.append("1970-01-01")
else:
bits.append(roundd(self.creation_date).isoformat())
if self.completion_date is not None:
bits.append(roundd(self.completion_date).isoformat())
# Extract tags from title or notes
tags = ""
if self.notes:
notes, tags = extract_tags(self.notes)
notes = notes.strip()
else:
notes = self.notes
if self.title and not tags:
title, tags = extract_tags(self.title)
title = title.strip()
elif self.title:
title = self.title.strip()
else:
title = self.title
if title and notes:
bits.append(f"{title} :: {notes}")
elif title:
bits.append(title)
elif notes:
bits.append(notes)
bits.append(tags)
if self.due_date is not None:
bits.append("due:" + roundd((self.due_date)).isoformat())
bits.append("index:" + str(self.index))
return " ".join(bits).replace("\n", " ")
def extract_tags(string: str) -> tuple[str, str]:
words = string.split()
tags = []
while words and words[-1].startswith("#"):
tags.append("@" + words.pop(-1)[1:])
return " ".join(words), " ".join(sorted(tags, key=str.lower))
def roundd(dt: datetime.datetime) -> datetime.date:
# Exist in more than one TZ, round to closest date
dates = [
datetime.datetime.combine(
dt.date() + delta,
datetime.time.min,
datetime.timezone.utc,
)
for delta in [
datetime.timedelta(days=-1),
datetime.timedelta(days=0),
datetime.timedelta(days=+1),
]
]
min_date = datetime.date.min
min_delta = datetime.timedelta(days=100)
for date in dates:
delta = abs(date - dt)
if delta < min_delta:
min_date = date.date()
min_delta = delta
return min_date
def _maybe_date(value: str | None) -> datetime.datetime | None:
if value is not None:
if value.endswith("Z"):
value = value[:-1]
dt = datetime.datetime.fromisoformat(value)
if dt.tzinfo is None:
dt = dt.replace(tzinfo=datetime.timezone.utc)
return dt
return None
def main():
data = sys.stdin.read()
try:
json_data = json.loads(data)
except ValueError:
entries = [TodoEntry.from_str(line.strip()) for line in data.splitlines()]
else:
entries = [
TodoEntry(
index=n,
title=row.pop("title", None),
notes=row.pop("notes", None),
completed=row.pop("completed"),
priority=row.pop("priority"),
completion_date=_maybe_date(row.pop("completionDate", None)),
creation_date=_maybe_date(row.pop("creationDate", None)),
due_date=_maybe_date(row.pop("dueDate", None)),
url=row.pop("url", None),
)
for n, row in enumerate(json_data["reminders"])
]
if any(x.keys() - {'uid'} for x in json_data["reminders"]):
print(f"Left over data:\n{json_data['reminders']}")
print("\n".join(map(str, entries)))
if __name__ == "__main__":
main()
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