Logging

[gjermundgaraba]

I find myself wanting a logging system (to file) to more easily be able to debug.

I can implement this, but I want to check a couple of things first:

1. Is that something you want in cliamp?
2. If yes, do you have any strong preferences on libraries and ux?

My suggestion is something like this:
Setup:

• library: log/slog
• format: plain text
• config: log_level = "info"
• CLI override: --log-level debug|info|warn|error
• file output: ~/.config/cliamp/cliamp.log

Behavior/DX:

• Keep stdout/stderr for non-TUI commands and fatal startup errors
• Refactor applog into a app-wide logger as a thin facade over slog with "intent-based" logging (you don't specify sinks, you specify intent), something like (first draft):
  • applog.(Debug(f)|Info(f)|Warn(f)|Error(f)) = diagnostic log
  • applog.Status(f) = footer
  • applog.(UserWarn(f)|UserError(f)) = diagnostic log + footer
• Possible addition: set this up for plugins to utilize as well somehow (haven't given this part so much thought yet)

Let me know what you think.

[bjarneo]

1. Yes, I surely want this. Was asked lately in person today if cliamp has something like this.
2. No

I think if you want to, just go for it, and I'll give it a spin. You have delivered quality PRs and have good thoughts.