[Enhancement] Support podcast episode Pub Date without specifying time

[apiweb]

Describe the issue

When I try to edit a podcast episode. If I don't input a time on the Pub Date field, the form is submitted with a null PubDate value.
Some episodes I don't hour the hour date, but the ABS required a time when I try to edit a podcast file.
If I input only the date info, my request is sent with a null/empty value as PubDate.

Steps to reproduce the issue

1. Edit a podcast episode
2. Click on the pub date and insert only the date
3. Save the episode
4. The pub date is saved as null

This happens if you are using the tab key to jump between the inputs
When you insert a date (typing, not choosing by the calendar component), if you press the tab key, the form will jump to the Title field, just with the Date inserted on the PubDate field.
And if you try to save just the date, a null value is sent instead of the Date only.

Audiobookshelf version

v2.2.15

How are you running audiobookshelf?

Docker

[chrishoage]

To me this is a data loss bug. The form should be in an "invalid" state and not let you save at the very least.

I just spent a lot of time filling out podcast details not knowing I was not saving my work.

Edit: My suggestion of disallowing the form submission when the date is invalid was completed in #3805

[advplyr]

The next release will include an error message preventing submission and a red border showing the date is invalid. It won't support leaving the time blank so I'll leave this open.

The issue with leaving the time blank is that we are using the browsers native datetime input by passing datetime-local in the type attribute of the HTML input. When the date and time is either incomplete or invalid the value is left empty on the input.

For example, if you type "25/01/2015" and leave the time blank there is no way (that I know of) to get the "25/01/2015". We have to build a custom input to support that.

I wrote a bit more about that here #3805 (comment)