feat: configurable log level via env

README.md

@@ -42,6 +42,7 @@ Optional env variable(s):
 - `MCP_SERVERS` - MCP HTTP stream server for external function calls (Eg.: `http://localhost:8081/sse`), this could be a comma separated list for multiple servers
 - `SEARCH_ENABLE` - Allow to use Google search for the AI service (Default: `false`, it won't work together with MCP servers)
 - `HISTORY_SUMMARY` - After how many messages the history should be summarized (Default: `20`, `0` means no summary, both model and user messages counts)
+- `LOG_LEVEL` - Log level (Default: `info`, other options: `debug`, `error`, `warn`/`warning`)
 
 All the history will be stored under the `history-gemini` folder.
 

cmd/server-bot/main.go

@@ -21,11 +21,26 @@ import (
 	"hairy-botter/internal/server"
 )
 
+func logLevelEnv() slog.Level {
+	levelStr := os.Getenv("LOG_LEVEL")
+	switch strings.ToLower(levelStr) {
+	case "debug":
+		return slog.LevelDebug
+	case "info":
+		return slog.LevelInfo
+	case "warn", "warning":
+		return slog.LevelWarn
+	case "error":
+		return slog.LevelError
+	default:
+		return slog.LevelInfo
+	}
+}
+
 func main() {
 
 	logger := slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{
-		// Level: slog.LevelDebug, // TODO: set to configurable level
-		Level: slog.LevelInfo,
+		Level: logLevelEnv(),
 	}))
 
 	addr := os.Getenv("ADDR")