package app

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

// ---------------------------------------------------------------------
// smartdns wildcards
// ---------------------------------------------------------------------

func handleSmartdnsWildcards(w http.ResponseWriter, r *http.Request) {
	switch r.Method {
	case http.MethodGet:
		payload := struct {
			Domains []string `json:"domains"`
		}{Domains: readSmartDNSWildcardDomains()}
		writeJSON(w, http.StatusOK, payload)
	case http.MethodPost:
		var payload struct {
			Domains []string `json:"domains"`
		}
		if r.Body != nil {
			defer r.Body.Close()
			if err := json.NewDecoder(io.LimitReader(r.Body, 1<<20)).Decode(&payload); err != nil {
				http.Error(w, "bad json", http.StatusBadRequest)
				return
			}
		}
		if err := saveSmartDNSWildcardDomainsState(payload.Domains); err != nil {
			http.Error(w, "write error", http.StatusInternalServerError)
			return
		}
		writeJSON(w, http.StatusOK, map[string]string{"status": "ok"})
	default:
		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
	}
}

func readSmartDNSWildcardDomains() []string {
	domains, _ := loadSmartDNSWildcardDomainsState(nil)
	return domains
}