Files
siftlode/backend/app/discover/budget.py
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peter 4aaaaa7860 chore(comments): drop epic, sprint and review-round ids from the code
The code cited its plan instead of saying why: `E28 review J4`, `(R6 S3b)`, `S1 justified…`,
`deep-review round 5`. That plan lives in the private ops repo, so for every reader of this one the
citation was noise, and a sentence whose subject was the plan step ("round 2 showed…") hid its
lesson behind an id. Each one is gone and the "why" kept: a bare citation is deleted, a sentence
carrying a lesson is reworded around it ("a later attempt showed…").

Measured (`scripts/audit_metrics.py`, product code): 652 lines in 270 files carried an epic code by
the definition the next commit holds (507 / 241 by the old, two-digit-only one) -> 0. Across all
code, tests, scripts and configs: ~1100 epic-code lines plus ~320 sprint/round ids.

Behaviour unchanged, checked mechanically: every changed .py file has the same AST once docstrings
are blanked; css/sh/toml/yml/json files are identical once comments are stripped; the only
non-comment changes in TS/JS are test titles, one description string in a contract table, and five
ESLint messages, whose text is all the gates snapshot diff holds. Not touched: Markdown (docs and
the changelog keep their history), Alembic migrations, TV episode notation (`S2 · E5`), DESIGN.md
ids (`C1`, `B4`, `S3h`), tracker ids (`SEC-16`, `DX-17`).

One stale claim fixed on the way: test_hls_reaper's docstring said the player checkpoints "every
10 s whether or not it is playing", which plex/stream.py calls wrong; it now says what the code does.
2026-10-05 00:19:39 +02:00

63 lines
2.8 KiB
Python

"""The time budget — the replacement for "what mood are you in?".
`random-gondolatok` 15/D asked for a mood questionnaire before the recommendations. The same file's
later BA-interview note (#23) says the mood half is not what makes this work: the friction is
deciding at all. A mood→genre mapping would also be invented data — we store no mood signal and never
will — whereas "how much time do you have" is a question the library can actually answer, from a
column we already have.
So the surface asks about TIME, and the answer is deterministic: four bands, no model, no latency.
The band also picks the source for free — ten minutes is a YouTube video, an evening is a movie —
which is exactly the cross-source behaviour the Home surface exists to provide.
The bands overlap on purpose. "I have 30 minutes" should not be answered with a two-minute Short just
because it fits; a lower bound is as much a part of the promise as the upper one.
"""
from typing import Literal
Budget = Literal["short", "medium", "long", "any"]
DEFAULT_BUDGET: Budget = "any"
# budget -> (min_seconds, max_seconds); None = unbounded on that side.
BANDS: dict[str, tuple[int | None, int | None]] = {
"short": (None, 12 * 60), # "10 perc" — a bit of slack over the round number the chip shows
"medium": (8 * 60, 40 * 60), # "30 perc"
"long": (40 * 60, None), # "Egy este"
"any": (None, None), # "Mindegy"
}
def band(budget: str) -> tuple[int | None, int | None]:
"""The (min, max) seconds for a budget. Unknown budgets fall back to the unbounded band rather
than raising: the route validates the vocabulary with a Literal, so anything reaching here with a
bad value is our own bug, and an unfiltered shelf is a better failure than a 500 on the landing
page."""
return BANDS.get(budget, BANDS["any"])
def remaining_seconds(duration_seconds: int | None, position_seconds: int) -> int | None:
"""What is actually LEFT to watch. The question is "how much time do you have", so a 90-minute
film with 8 minutes to go belongs in the ten-minute band, not the evening one. Unknown duration
stays unknown — see `fits`."""
if duration_seconds is None:
return None
return max(0, duration_seconds - max(0, position_seconds))
def fits(seconds: int | None, budget: str) -> bool:
"""Does a runtime fit the budget?
An unknown duration fits only the unbounded band. We cannot promise an item finishes inside ten
minutes when we do not know how long it is, and quietly including it would make the one control
on this page dishonest — the failure mode the house rules call an un-honest state."""
lo, hi = band(budget)
if seconds is None:
return lo is None and hi is None
if lo is not None and seconds < lo:
return False
if hi is not None and seconds > hi:
return False
return True