package utils

import (
	"bytes"
	"encoding/json"
	"fmt"
	"net/http"
)

// Json set the content type to json and encode the data
func Json(w http.ResponseWriter, data any) {
	w.Header().Set("Content-Type", "application/json; charset=utf-8")
	var buf bytes.Buffer
	err := json.NewEncoder(&buf).Encode(data)
	if err != nil {
		if recoverErr, ok := data.(recoverErr); ok {
			w.WriteHeader(recoverErr.Code)
			fmt.Fprint(w, recoverErr.Json())
		} else {
			http.Error(w, fmt.Sprintf("encode [%v] failed: %v", data, err), http.StatusInternalServerError)
		}
	}
	fmt.Fprint(w, buf.String())
}