Add multi-account support

[kamushadenes]

I would like to use this with my personal and work accounts, how can I do that?

[rosenpin]

Currently this script only supports a single account, you could add your work account calendar to your personal account calendar, then sync your personal calendar. This will make the script go through both calendars

[ungarida]

This is not going to be good enough workaround. In case of a Google Account managed by an organization you can share with your personal account only with permission to see busy / free events 😞

[rosenpin]

we could add an option to provide the script with multiple credentials file (using the -c flag)
This will require users to download 2 files, one for each account, then the script will simply fetch n times for each credentials file provided, it will then just merge the resulting lists and from there it's business as usual.

TODO:

1. Change the get_events call to be called for each credential file provided
   https://github.com/rosenpin/i3-agenda/blob/master/i3_agenda/__init__.py#L33

2. Add support for multiple credentials file command line argument
   https://github.com/rosenpin/i3-agenda/blob/master/i3_agenda/config.py#L14

[ungarida]

Just out of curiosity, why is not possible to run the same command with different permission files? Because if that would have been possible, a user could render it in separated blocks with different styles. It would have been a bit more flexible.

[rosenpin]

It's now possible since @notdodo commit

Previously if you did it, both blocks would have pulled from the same cache.
Now you can set a different config dir for each block and let them run simultaneously

You would need something like this

Step 1

You will have to create both directories first
mkdir -p ~/.config/i3agenda/work && mkdir -p ~/.config/i3agenda/personal

Step 2

You will need to download both google credential files for both accounts and place them in the appropriate directories.
More information here

Step 3

Configure your bar
Polybar example

modules-center = agenda-personal agenda-work
....
[module/agenda-personal]
type = custom/script
; Show the next event and forget cache automatically every 60 minutes. Save cache in personal config dir
exec = i3-agenda -c ~/.config/i3agenda/personal/google_credentials.json -ttl 60 --conf ~/.config/i3agenda/personal
interval = 60
....

[module/agenda-work]
type = custom/script
; Show the next event and forget cache automatically every 60 minutes. Save cache in work config dir
exec = i3-agenda -c ~/.config/i3agenda/work/google_credentials.json -ttl 60 --conf ~/.config/i3agenda/work
interval = 60

Edit:
Added this workaround to the README