better json printing

src/tui/mod.rs

@@ -13,6 +13,7 @@ use tui_widget_list::{ListBuilder, ListView};
 use crate::tui::{
     filter::{FilterKind, WipMatcher},
     log_viewer::{InputState, InputTarget, LogViewer},
+    model::pretty_print_value,
 };
 use crate::tui::{
     filter::{FilterSelection, WipFilter},
@@ -473,9 +474,7 @@ impl Widget for &mut App {
                         let Some((k, v)) = &items.get(cx.index) else {
                             return (Paragraph::new(""), 1);
                         };
-                        let contents = serde_json::to_string_pretty(&v)
-                            .unwrap_or(String::new())
-                            .replace("\n", "\n{:width$}");
+                        let contents = pretty_print_value(&v);
 
                         let mut res = Paragraph::new(format!("{k:width$} {contents}"))
                             .wrap(Wrap { trim: false });

src/tui/model.rs

@@ -9,6 +9,19 @@ use std::{
 use jiff::Timestamp;
 use ratatui::text::Line;
 use serde::Deserialize;
+use serde_json::Value;
+
+pub fn pretty_print_value(v: &Value) -> String {
+    match v {
+        Value::Null => "null".to_string(),
+        Value::Bool(false) => "false".to_string(),
+        Value::Bool(true) => "true".to_string(),
+        Value::Number(number) => number.to_string(),
+        Value::String(s) => s.clone(),
+        v @ Value::Array(..) => v.to_string(),
+        v @ Value::Object(..) => v.to_string(),
+    }
+}
 
 #[derive(Deserialize, Debug, Hash)]
 pub enum Level {
@@ -105,13 +118,18 @@ impl LogEntry {
             raw.fields
                 .message()
                 .map(|i| i.to_string())
-                .or_else(|| raw.fields.fields.get("return").map(|i| format!("↩ {i}")))
+                .or_else(|| {
+                    raw.fields
+                        .fields
+                        .get("return")
+                        .map(|v| format!("↩ {}", pretty_print_value(v)))
+                })
                 .or_else(|| {
                     raw.fields
                         .fields
                         .iter()
                         .next()
-                        .map(|(k, v)| format!("{k} = {v}"))
+                        .map(|(k, v)| format!("{k} = {}", pretty_print_value(v)))
                 })
                 .unwrap_or_else(|| NO_MESSAGE.to_string())
         };