Multiple issues appearing after using the maintain command

[ksgubanov]

What is the issue? (required)
While the 'maintain %' command works as expected (excluding accuracy mentioned in #295), other functions such as 'charge', 'maintain stop' and 'calibrate' seem to be affected by the limit set by the 'maintain' command.
I don't use the GUI version. Everything here is only applicable to the CLI version.

What exactly did you do to produce the issue? (required)
Steps to reproduce the behavior:

1. Execute 'battery maintain 80'
2. Wait until the charge level reaches 80% and the charging stops
3. Execute one of the following
   a. 'battery maintain stop' or with any other (!= 80) target percentage
   b. 'battery charge 100'
   c. 'battery calibrate'
   d. 'battery discharge' with the percentage lower than 80 maintained previously
4. Observe unexpected behaviour:
   a. the tool reports that the charging has been enabled:
   Battery at 80% (attached; remaining), 11.867V, smc charging enabled
   but the next battery status results in smc charging disabled
   (--force-discharge helps to discharge, but once the charge level has reached the set value, charging gets enabled again and it goes back to initial 80)
   b. the maintaining mode is not switched to charging to 100%
   c. the battery discharges (to be checked if it goes down to 15% or not) then returns to around 80%
   d. reporting Enabling battery discharging followed by the endless waiting to discharge. After the charge state changes (from 80 to 79%), the power source becomes 'Power Adapter' again and the battery is maintained at this level (cat .battery/maintain.percentage shows 50 because I set it 50 by executing 'battery maintain 50')

I also observe that the log message 🚨 Calibration process have been stopped appears after every 'maintain' command execution, even though the calibration supposed to be cancelled long time ago.

Expected behavior (required)
CLI tool consistently executes given commands

Related issues
#282
#290
#295
#301
#302
#321

[js4jiang5]

You can try my version.
I ran into many problems and raised the issues but got no response here, so I decided to fork and solve it by myself.