Log config on startup

cmd/leld/main.go

@@ -3,6 +3,7 @@ package main
 import (
 	"bufio"
 	"context"
+	"encoding/json"
 	"flag"
 	"fmt"
 	"log"
@@ -111,6 +112,7 @@ func main() {
 	go serveControl(logger, ln, d, &cfg, x, &mods, &keycode, reloadPath)
 
 	logger.Printf("ready (hotkey: %s)", cfg.Hotkey)
+	logConfig(logger, cfg, reloadPath)
 
 	if noTray {
 		go handleSignals(logger, d)
@@ -163,6 +165,17 @@ func main() {
 	systray.Run(onReady, func() {})
 }
 
+func logConfig(logger *log.Logger, cfg config.Config, path string) {
+	safe := cfg
+	safe.AIAPIKey = ""
+	data, err := json.MarshalIndent(safe, "", "  ")
+	if err != nil {
+		logger.Printf("config: <error: %v>", err)
+		return
+	}
+	logger.Printf("config (%s):\n%s", path, string(data))
+}
+
 func matchMods(state uint16, want uint16) bool {
 	masked := state & ^uint16(xproto.ModMaskLock|xproto.ModMask2)
 	return masked == want