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This commit is contained in:
Dalibor Marković
2026-05-31 16:30:17 +02:00
parent 685692f7e4
commit 1890cd11ef
9 changed files with 396 additions and 2 deletions
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cmd/ntech/.main.go.kate-swp
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cmd/ntech/main.go
+30 -2
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@@ -1,7 +1,35 @@
package main
import "fmt"
import (
"fmt"
"log"
"net/http"
"os"
"github.com/go-chi/chi/v5"
"ntech/internal/config"
)
func main() {
fmt.Println("NTech pokrenut")
if config.JelPrvoPokretanje() {
config.PokreniSetup()
return
}
// normalno pokretanje
port := os.Getenv("NTECH_PORT")
if port == "" {
port = "8080"
}
r := chi.NewRouter()
r.Get("/", func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintln(w, "Zdravo iz NTech-a")
})
log.Printf("NTech pokrenut na portu %s", port)
err := http.ListenAndServe(":"+port, r)
if err != nil {
log.Fatalf("Greška: port %s je zauzet ili nije dostupan", port)
}
}
go.mod
+1
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@@ -9,6 +9,7 @@ require (
github.com/mattn/go-isatty v0.0.20 // indirect
github.com/ncruces/go-strftime v1.0.0 // indirect
github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
github.com/webview/webview_go v0.0.0-20240831120633-6173450d4dd6 // indirect
golang.org/x/sys v0.42.0 // indirect
modernc.org/libc v1.72.3 // indirect
modernc.org/mathutil v1.7.1 // indirect
go.sum
+2
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@@ -10,6 +10,8 @@ github.com/ncruces/go-strftime v1.0.0 h1:HMFp8mLCTPp341M/ZnA4qaf7ZlsbTc+miZjCLOF
github.com/ncruces/go-strftime v1.0.0/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
github.com/webview/webview_go v0.0.0-20240831120633-6173450d4dd6 h1:VQpB2SpK88C6B5lPHTuSZKb2Qee1QWwiFlC5CKY4AW0=
github.com/webview/webview_go v0.0.0-20240831120633-6173450d4dd6/go.mod h1:yE65LFCeWf4kyWD5re+h4XNvOHJEXOCOuJZ4v8l5sgk=
golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.42.0 h1:omrd2nAlyT5ESRdCLYdm3+fMfNFE/+Rf4bDIQImRJeo=
golang.org/x/sys v0.42.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
internal/config/.firstrun.go.kate-swp
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internal/config/.setup.go.kate-swp
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internal/config/firstrun.go
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@@ -0,0 +1,62 @@
package config
import (
"fmt"
"net"
"os"
)
// lista portova koje proveravamo pri prvom pokretanju
var kandidatPortovi = []int{8080, 3000, 8000, 9090}
// proverava da li je port slobodan
func JelPortSlobodan(port int) bool {
adresa := fmt.Sprintf(":%d", port)
listener, err := net.Listen("tcp", adresa)
if err != nil {
return false
}
listener.Close()
return true
}
// vraća prvi slobodan port sa liste kandidata
func NadjiSlobodanPort() int {
for _, port := range kandidatPortovi {
if JelPortSlobodan(port) {
return port
}
}
// ako ni jedan nije slobodan, vraćamo 0
return 0
}
// proverava da li je ovo prvo pokretanje programa
func JelPrvoPokretanje() bool {
_, err := os.Stat(".env")
return os.IsNotExist(err)
}
// PortStatus čuva informaciju o jednom portu
type PortStatus struct {
Port int `json:"port"`
Slobodan bool `json:"slobodan"`
}
// StatusPortova vraća listu svih kandidat portova sa statusom
func StatusPortova() []PortStatus {
rezultat := make([]PortStatus, len(kandidatPortovi))
for i, port := range kandidatPortovi {
rezultat[i] = PortStatus{
Port: port,
Slobodan: JelPortSlobodan(port),
}
}
return rezultat
}
// SacuvajEnv upisuje izabrani port u .env fajl
func SacuvajEnv(port int) error {
sadrzaj := fmt.Sprintf("NTECH_PORT=%d\n", port)
return os.WriteFile(".env", []byte(sadrzaj), 0600)
}
internal/config/setup.go
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@@ -0,0 +1,81 @@
package config
import (
"encoding/json"
"fmt"
"log"
"net/http"
"os"
"strings"
"github.com/go-chi/chi/v5"
"github.com/webview/webview_go"
)
// PokreniSetup pokreće WebView prozor za prvo podešavanje
func PokreniSetup() {
port := NadjiSlobodanPort()
if port == 0 {
log.Fatal("Greška: nije pronađen nijedan slobodan port")
}
adresa := fmt.Sprintf(":%d", port)
r := chi.NewRouter()
// serviraj setup stranicu
r.Get("/setup", func(w http.ResponseWriter, req *http.Request) {
portovi := StatusPortova()
podaci, err := json.Marshal(portovi)
if err != nil {
http.Error(w, "Greška", http.StatusInternalServerError)
return
}
sadrzaj, err := os.ReadFile("web/templates/setup/index.html")
if err != nil {
http.Error(w, "Greška", http.StatusInternalServerError)
return
}
html := strings.Replace(string(sadrzaj), "PORT_PODACI", string(podaci), 1)
w.Header().Set("Content-Type", "text/html")
fmt.Fprint(w, html)
})
// proverava da li je određeni port slobodan
r.Get("/setup/proveriPort", func(w http.ResponseWriter, req *http.Request) {
portStr := req.URL.Query().Get("port")
var port int
fmt.Sscanf(portStr, "%d", &port)
slobodan := JelPortSlobodan(port)
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(map[string]bool{"slobodan": slobodan})
})
// prima izabrani port i upisuje .env
r.Post("/setup/potvrdi", func(w http.ResponseWriter, req *http.Request) {
var telo struct {
Port int `json:"port"`
}
json.NewDecoder(req.Body).Decode(&telo)
err := SacuvajEnv(telo.Port)
if err != nil {
http.Error(w, "Greška pri čuvanju podešavanja", http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(map[string]bool{"ok": true})
})
// pokreni server u pozadini
go func() {
log.Printf("Setup server pokrenut na portu %d", port)
http.ListenAndServe(adresa, r)
}()
// otvori WebView prozor
w := webview.New(false)
defer w.Destroy()
w.SetTitle("NTech — Konfiguracija")
w.SetSize(520, 580, 0)
w.Navigate(fmt.Sprintf("http://localhost:%d/setup", port))
w.Run()
}
web/templates/setup/index.html
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<!doctype html>
<html lang="sr">
<head>
<meta charset="UTF-8" />
<title>NTech — Konfiguracija</title>
<style>
* {
box-sizing: border-box;
margin: 0;
padding: 0;
}
body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
background: #1a1a2e;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
}
.kartica {
background: #16213e;
padding: 2rem;
border-radius: 12px;
box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
width: 410px;
border: 1px solid #0f3460;
}
.zaglavlje {
text-align: center;
margin-bottom: 1.3rem;
}
.zaglavlje h1 {
color: #f8e45c;
font-size: 1.4rem;
margin-bottom: 0.25rem;
}
.zaglavlje p {
color: #a0a0b0;
font-size: 0.85rem;
}
.sekcija-naslov {
color: #a0a0b0;
font-size: 0.8rem;
text-transform: uppercase;
letter-spacing: 0.05em;
margin-bottom: 0.5rem;
}
.port-opcija {
display: flex;
justify-content: space-between;
align-items: center;
padding: 0.5rem 0.75rem;
margin: 0.25rem 0;
border: 2px solid #0f3460;
border-radius: 8px;
cursor: pointer;
transition: all 0.2s;
color: #e0e0e0;
}
.port-opcija:hover {
border-color: #e94560;
}
.port-opcija.izabran {
border-color: #e94560;
background: rgba(233, 69, 96, 0.1);
}
.port-opcija.zauzet {
opacity: 0.5;
cursor: not-allowed;
}
.slobodan {
color: #2ecc71;
font-size: 0.85rem;
}
.zauzet-tekst {
color: #e74c3c;
font-size: 0.85rem;
}
.razdvojnik {
border: none;
border-top: 1px solid #0f3460;
margin: 1rem 0;
}
input[type="number"] {
width: 100%;
padding: 0.5rem 0.75rem;
background: #0f3460;
border: 2px solid #0f3460;
border-radius: 8px;
font-size: 0.9rem;
color: #e0e0e0;
outline: none;
transition: border-color 0.2s;
}
input[type="number"]:focus {
border-color: #e94560;
}
input[type="number"]::placeholder {
color: #606080;
}
button {
width: 100%;
padding: 0.55rem;
margin-top: 0.75rem;
background: #e94560;
color: white;
border: none;
border-radius: 8px;
font-size: 1rem;
font-weight: 600;
cursor: pointer;
transition: background 0.2s;
}
button:hover {
background: #c73652;
}
.poruka {
text-align: center;
padding: 1rem;
color: #2ecc71;
display: none;
}
</style>
</head>
<body>
<div class="kartica">
<div class="zaglavlje">
<h1>NTech</h1>
<p>Početna konfiguracija</p>
</div>
<p class="sekcija-naslov">Dostupni portovi</p>
<div id="portovi"></div>
<hr class="razdvojnik" />
<p class="sekcija-naslov">Ili unesite drugi port</p>
<input
type="number"
id="vlastitiPort"
min="1024"
max="65535"
placeholder="npr. 8080"
/>
<button onclick="potvrdi()">Potvrdi i pokreni</button>
<div class="poruka" id="poruka">
NTech je konfigurisan! Možete zatvoriti ovaj prozor.
</div>
</div>
<script>
let izabranPort = null;
const portovi = PORT_PODACI;
const kontejner = document.getElementById("portovi");
portovi.forEach((p) => {
const div = document.createElement("div");
div.className = "port-opcija" + (p.slobodan ? "" : " zauzet");
div.innerHTML = `
<span>Port ${p.port}</span>
<span class="${p.slobodan ? "slobodan" : "zauzet-tekst"}">
${p.slobodan ? "✓ slobodan" : "✗ zauzet"}
</span>
`;
if (p.slobodan) {
div.onclick = () => {
document
.querySelectorAll(".port-opcija")
.forEach((el) => el.classList.remove("izabran"));
div.classList.add("izabran");
izabranPort = p.port;
document.getElementById("vlastitiPort").value = "";
};
if (izabranPort === null) {
div.classList.add("izabran");
izabranPort = p.port;
}
}
kontejner.appendChild(div);
});
function potvrdi() {
const vlastiti = document.getElementById("vlastitiPort").value;
const port = vlastiti ? parseInt(vlastiti) : izabranPort;
if (!port) {
alert("Molimo izaberite ili unesite port.");
return;
}
if (vlastiti && (port < 1024 || port > 65535)) {
alert("Port mora biti između 1024 i 65535.");
return;
}
fetch("/setup/proveriPort?port=" + port)
.then((r) => r.json())
.then((d) => {
if (!d.slobodan) {
alert("Port " + port + " je zauzet. Molimo izaberite drugi.");
return;
}
fetch("/setup/potvrdi", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ port: port }),
})
.then((r) => r.json())
.then((d) => {
if (d.ok) {
document.getElementById("poruka").style.display = "block";
document.querySelector("button").disabled = true;
}
});
});
}
</script>
</body>
</html>