Logging (#8)

- Add `Logger`, `Config`
- Back to `nixos-unstable`
- `nix flake update`

src/terminal.rs

@@ -1,22 +1,26 @@
-use std::io::{stdout, Stdout};
+use std::io;
 
 use color_eyre::eyre::Result;
-use crossterm::{execute, terminal::*};
+use crossterm::{
+    cursor, execute,
+    terminal::{EnterAlternateScreen, LeaveAlternateScreen},
+};
 use ratatui::{backend::CrosstermBackend, Terminal as RatatuiTerminal};
 
-pub type Terminal = RatatuiTerminal<CrosstermBackend<Stdout>>;
+pub type Terminal = RatatuiTerminal<CrosstermBackend<io::Stdout>>;
 
-pub fn init() -> Result<Terminal> {
-    enable_raw_mode()?;
-    execute!(stdout(), EnterAlternateScreen)?;
-    let mut terminal = RatatuiTerminal::new(CrosstermBackend::new(stdout()))?;
+pub fn setup() -> Result<Terminal> {
+    let mut stdout = std::io::stdout();
+    crossterm::terminal::enable_raw_mode()?;
+    execute!(stdout, EnterAlternateScreen, cursor::Hide)?;
+    let mut terminal = RatatuiTerminal::new(CrosstermBackend::new(stdout))?;
     terminal.clear()?;
     terminal.hide_cursor()?;
     Ok(terminal)
 }
 
-pub fn restore() -> Result<()> {
-    execute!(stdout(), LeaveAlternateScreen)?;
-    disable_raw_mode()?;
+pub fn teardown() -> Result<()> {
+    execute!(io::stdout(), LeaveAlternateScreen, cursor::Show)?;
+    crossterm::terminal::disable_raw_mode()?;
     Ok(())
 }