package language

import (
	"encoding/json"
	"net/http"

	"github.com/food-ai/backend/internal/infra/locale"
)

type languageItem struct {
	Code       string `json:"code"`
	NativeName string `json:"native_name"`
	SortOrder  int    `json:"sort_order"`
}

// List handles GET /languages — returns the active language list loaded from DB.
func List(w http.ResponseWriter, r *http.Request) {
	items := make([]languageItem, 0, len(locale.Languages))
	for i, l := range locale.Languages {
		items = append(items, languageItem{
			Code:       l.Code,
			NativeName: l.NativeName,
			SortOrder:  i + 1,
		})
	}
	w.Header().Set("Content-Type", "application/json")
	_ = json.NewEncoder(w).Encode(map[string]any{"languages": items})
}