feat: use structured logging using json format

HerrNaN · HerrNaN · commit f1fdd7397f7f · 2026-07-18T11:13:10.000+02:00
diff --git a/cmd/charge/main.go b/cmd/charge/main.go
@@ -19,7 +19,7 @@ const (
 )
 
 func main() {
-	logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{}))
+	logger := slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{}))
 	slog.SetDefault(logger)
 
 	ctx, cleanup := signal.NotifyContext(context.Background(), os.Interrupt)
@@ -40,7 +40,7 @@ func main() {
 		os.Exit(1)
 	}
 
-	logger = slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
+	logger = slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{
 		Level: cfg.LogLevel,
 	}))
 	slog.SetDefault(logger)

Original file line number	Diff line number	Diff line change
`@@ -19,7 +19,7 @@ const (`
`19`	`19`	`)`
`20`	`20`
`21`	`21`	`func main() {`
`22`		`- logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{}))`
	`22`	`+ logger := slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{}))`
`23`	`23`	`slog.SetDefault(logger)`
`24`	`24`
`25`	`25`	`ctx, cleanup := signal.NotifyContext(context.Background(), os.Interrupt)`
`@@ -40,7 +40,7 @@ func main() {`
`40`	`40`	`os.Exit(1)`
`41`	`41`	`}`
`42`	`42`
`43`		`- logger = slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{`
	`43`	`+ logger = slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{`
`44`	`44`	`Level: cfg.LogLevel,`
`45`	`45`	`}))`
`46`	`46`	`slog.SetDefault(logger)`