timewarrior/doc/notes.txt
2015-12-18 08:59:34 -05:00

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Timewarrior
===========
Tracking time is complex and means different things to different people. It can
range from being as simple as:
$ timew track 9am - now "Prepare for staff meeting"
$ timew track "Staff meeting"
Or as sophisticated as:
$ timew track backfill last week "Design proposal"
It is not necessary to define tags, or define a set of work week exclusions,
and without these, the software is a simple start/stop clock with tags.
For fully automated time tracking, as the line above exhibits, weekly and daily
schedules must be considered. For such a tool to be useful, it must support all
the above, and make time tracking very simple.
Goals
-----
Provide a personal tool to easily track time spent and generate reports in
multiple formats and styles. The tool will "do the right thing" as much as
possible, to make detailed time tracking easy, and not a burden.
Open Source. Localized.
Non-Goals
---------
- No cloud support.
- No multi-user support.
- No sync support.
- No precision higher than a minute.
Integration
-----------
- As a sister-product to Taskwarrior and Tasksh, integration should be as
simple as installing a hook script.
- An export and import feature, using JSON, will allow further integration with
arbitrary tools.
Definitions
-----------
- A timeline is a continuum that is the one-dimensional space that timestamps
and intervals map onto.
- A timestamp is a point on a timeline.
- An interval is a span of time on a timeline, consisting of two timestamps,
with associated tags. An interval may be an inclusion or an exclusion. A
weekend is an exclusion, time spent working is an inclusion.
- A tag is an arbitrary UTF8 string, which may contain whitespace.
- A workweek is defined by exclusions - a set of excluded intervals representing
time not spent working. Those intervals are tagged to be easily identifiable.
- Lunch could be an inclusion, but tagged as non-work. It could also be an
exclusion.
- The time resolution is 1 minute.
Tags
----
Tags represent tracking categories. Tags are arbitrary UTF8 strings. A tag may
be a single unquoted word, or a quoted phrase.
A tag may be used without being defined, but if a tag is defined, then it may
have associated metadata, such as a start date representing the first date on
which it may be used, or an end date, when it expires. A tag may have a budget,
which is the maximum trackable time for a period.
Commands
--------
The command set may include:
define Modify configuration
track Record tracked time
report Run a report
tags Show all tags
query Extract an interval set
import Import JSON data
export Export JSON data
x Run extension 'x'
Macros
------
A macro is a keyword that can take arguments, and expands to a set of one or
more other timew commands, with some dynamic aspect. For example, the macro
named 'staff meeting' could be an interval that is on Wednesdays at 10:00, and
has a set of associated tags. This would then create an appropriately tagged
interval.
General Use Cases
-----------------
Suppose 'today' is 2015-11-24, a Tuesday at noon. This date is chosen because
it is mid-week, a holiday is coming up, and workday exceptions are typical.
Here is the timeline, with the successive exclusions added, as a work week is
defined:
2015
November December
W48 W49
23rd 24th 25th 26th 27th 28th 29th 30th
Monday Tuesday Wednesday Thursday Friday Saturday Sunday Monday
: : : : : : : :
:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..
0 6 12 18 0 6 12 18 0 6 12 18 0 6 12 18 0 6 12 18 0 6 12 18 0 6 12 18 0 6 12 18
|
| ------------ $ timew define holidays eng-USA
| ------------------------ $ timew define workweek mon-fri
---- ---- | ---- ---- ---- ---- ---- ---- $ timew define workday start 8:30am
--- | --- --- --- --- --- --- --- $ timew define workday end 1730
| ---- $ timew define workday tue end 3pm
|
+++++ ++++ +++++ +++++ +++++ Resulting work week
|
now
On that same timeline, here are some example tracked intervals:
|
++++++++++++ tag1 tag2 $ timew track +tag1 +tag2 yesterday
++++++++++++ tag1 tag2 $ timew track +tag1 +tag2 today
+ tag1 tag2 $ timew start +tag1 +tag2
+++++++++++++++++++ tag1 tag2 $ timew start +tag1 +tag2 backfill
+ tag3 | $ timew track +tag3 yesterday 2pm - 4pm
+ tag4 | $ timew track -tag3 +tag4 yesterday 2pm - 4pm
|
now
Extensions
----------
A simple extension mechanism, similar to Taskwarrior would require an executable
script found in a defined location with a conformant name, which then is fed
queried raw data as stdin.
For example, this script clearly defines that it is a 'report' extension named
'abc'.
~/.timewarrior/extensions/report_abc
Unsolved Issues
---------------
- Multiple timelines?
- Terminology for backwards and forwards tracking (backfill for the past, and
just assume everythign else is for the future)?
- Given this:
$ timew track yesterday 9am - 5pm tag1
What does this do:
$ timew track yesterday 10am - 11am tag2
Does it yield:
a) yesterday 540-1020 tag, 600-660 tag2 # overlap
b) yesterday 540-600 tag1, 600-660 tag2, 660-1020 tag1 # no overlap
c) yesterday 540-600 tag1, 600-660 tag1 tag2, 660-1020 tag1 # explicit overlap
Stating 'track yesterday 10am - 11am tag2' sounds imperative, thus overriding
any existing tags in that interval. Perhaps a 'merge' keyword could be added
to combined the results (track yesterday 10am - 11am tag2 merge)?
- If the timelines are not collapsed until needed (report/export), then a command
like this on day 1:
$ timew start tag1
Followed by this on day 5:
$ timew stop
Needs to create a tracking record for each of the 5 days.
---
F: start (frontfill) and backfill (end) could be considered orthogonal to each other. They just operate into different directions. but I think they behave the same, more or less.
F: Which brings me to the topic of overlapping intervals. While most of things would not be multitasking/overlapping. I could think of a few things that could be reported overlapping.
P: Agreed, I can multitask and be pursuing two results at the same time.
F: What about IDs to make this even easier or just “stop” that actuates on the last start?
P: I think a “start” leaves and open-ended time range: 2015-12-10 791- “Painting the kitchen"
The 791 corresponds to my local 1631EST (60 * 16 + 31), with no end time.
F: yes. but i mean more like...
$ timew track “Packing my bags"
Tracking [1] “packing my bags"
$ timew stop 1
or just
$ timew stop
P: The latter works in this example, so no need for ID there. IDs might be useful if Im tracking two things at once, ie no single active thing.
F: exactly. it would avoid typing descriptions...
P: okay, good. Noted.
P: So only if you define a workweek, does the following make sense:
$ timew track last week “Installing shelves"
“last week” clearly means all week, so it can query the timeline for a list of untracked time, then add intervals to fill it. Similarly:
$ timew track today “Paint door”
That can mean fill all time up until now. You could add a keyword “fill” to that, and maybe it goes to end of day.
P: Right. My point here is that “backfill” and “fill” are not necessarily needed, and can be implied from the “last week”. Obviously this implies no fill:
$ timew track yesterday 2pm - 4pm “Do this"
Yes - “today until now” could be an explicit version of “today”. “Today from now” is the same as “track”.
F: the fill thing could be used to indicate just a direction:
P: There is no open-ended fill though. The future is infinite, so we dont want to actually record much. Anything bounded, yes (“until eod”), but anything unbounded (“track do this”) just leaves it open.
F: it fills from the last good point, goes backwards in time until it hits a stop/interval limit.
P: Yes, unless you bound it. ie “timew track last week this thing” can back fill within the “last week”, but exclude any otherwise tracked intervals.
Then we can support a “merge” keyword to overlap any tracked intervals.
F: If you add fill to this I would expect it to start at the end of last week, find the empty intervall and fill it until it hits a limit or another already filled interval.
So it only does one thing.
while the command without fill would operate on the entire week instead.
but this would just be me.
P: Lets explore that. Suppose “last week” is 39 hours of nothing, and 1 hour of a meeting. Suppose we indicate (for clarity here) keywords as “:keyword”. The question then becomes what do the following do:
$ timew track last week “paint the thing”
$ timew track last week “paint the thing” :fill
Our choices are:
39 hours of “paint the thing” filled around the 1 hour “meeting”.
Or 40 hours of “paint the thing” overlapping with 1 hour “meeting”
Or 40 hours of “paint the thing”, and the meeting is gone
F: hm, b would be first choice.
“a" would be second or third.
P: Configurable maybe, or overridden with a keyword.
F: yeah. you could get a warning.
F: I think we could generally use it to “fill” around other already tracked events.
P: So a normal human only does one thing at a time.
F: Yes but then also to make a difference between this
say you had this:
timew track 9-10 meeting
so now a noon you realise that you dont have anything tracked for 8-9 and 10-12.
If I then do timew track 8 "reading email” it either stops automatic tracking for email at 9 (or continues and erases meeting - whatever if that makes sence).
but with timew track 8 “reading email” fill it would do 8-9 mail and 10-12 mail around the 9-10 meeting.
I think it would be more logic to stop a tracking of an event if a new event comes along.
P: I like that: “timew track 8 read” fills in 8-9 and stops. “timew track 8 read :fill” fills in 8-9, 10-12.
F: Yes.
F: Perhaps this could be used in the same way for the yesterday example... So the double tracking would not occur.
P: Agreed.
F: Only when doing it explicitly.
P: There is a use-case for double tracking. Suppose I am a manager, and I do this:
$ timew track yesterday “paint the door” fredde
$ timew track yesterday “paint the window” paul
Its a valid use case. So there would be some kind of configuration that says “this tag can overlap with that tag, but not itself”.
I thought of this: Using a tag with pre-defining it is what we have discussed so far.
But if a tag is predefined somehow (timew define tag “…”) then it could live in configuration, and have metadata, such as an expiration date. This corresponds to “you cant bill this client after EOM”.
It could have a start date, which means “cannot bill before next month”.
Could also define overlap. This could be implemented using Rules.
P: So there are lots of time specification formats to support:
until 4pm
from 11am
since 11am
3pm - 4pm
etc. Assume we support them all.
Also ranges:
last week
last month
monday
last monday
yesterday
etc. Assume we support them all
F: I think we should not only have an undo file, but also a log file.
P: Undo like tw?
ie single stack?
F: Yes. Log file: so we can see what the rules system does.
P: Good point.
I like that. Ill add something.
Good for debugging also.
So there will now be a logging rule, to define what happens.