package common

import (
	"encoding/json"
	"fmt"
	"log/slog"
	"net/http"
	"strings"
	"unicode"
	"unicode/utf8"

	"payouts/internal/models"
)

func Reason(reason string, params ...any) slog.Attr {
	return slog.String("reason", fmt.Sprintf(reason, params...))
}

func ErrorResponse(w http.ResponseWriter, message string, err error, status int, logOpts ...any) {
	r, size := utf8.DecodeRuneInString(message)
	errorMsg := string(unicode.ToUpper(r)) + strings.ToLower(message[size:])

	logFields := logOpts
	if err != nil {
		logFields = append([]any{slog.String("error", err.Error())}, logOpts...)
	}

	slog.Error(errorMsg, logFields...)
	w.Header().Set("Content-type", "application/json")
	w.WriteHeader(status)

	json.NewEncoder(w).Encode(&models.ErrorResp{
		Message: errorMsg,
		Status:  status,
	})
}