logger.go

package goodidea

import (
	"encoding/json"
	"fmt"
	"log/slog"
	"os"
)

// ControllerError - An error with nested response
type ControllerError struct {
	//Msg is a string field to capture a custom error message
	Msg string `json:"msg"`
	//Func is the name of the function the error occured in
	Func string `json:"func"`
	//Reason is a longer explication of what happened, could be a message from library
	Reason string `json:"reason"`
	//Cause is a pointer to why this error is being raised, e.g, error from sub functions
	Cause *ControllerError `json:"cause"`
}

func (e *ControllerError) Error() string {
	s, err := json.Marshal(e)
	if err != nil {
		return fmt.Sprintf(`{"msg":"%s","func":"%s", "reason":"%s","aside":"could not marshal this error properly"}`, e.Msg, e.Func, e.Reason)
	}
	return string(s)
}

func SetupLogger() {
	lvl := slog.LevelInfo
	switch os.Getenv("LOG_LEVEL") {
	case "error":
		lvl = slog.LevelError
	case "warn":
		lvl = slog.LevelWarn
	case "debug":
		lvl = slog.LevelDebug
	}

	logger := slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{
		Level: lvl,
	}))

	slog.SetDefault(logger)
}