package main import ( "crypto/tls" "encoding/json" "fmt" "io" "log" "net/http" "net/http/httputil" "net/url" "os" "os/exec" "strings" "time" "gopkg.in/gomail.v2" ) type TripEntry struct { Name string `json:"name"` Vehicle string `json:"vehicle"` Destination string `json:"destination"` DateStart string `json:"date_start"` TimeStart string `json:"time_start"` DateEnd string `json:"date_end"` TimeEnd string `json:"time_end"` Purpose string `json:"purpose"` KmStart int `json:"km_start"` KmEnd int `json:"km_end"` Coordinates *GeoCoords `json:"coordinates,omitempty"` } type GeoCoords struct { Lat string `json:"lat"` Lng string `json:"lng"` } func main() { log.SetFlags(log.LstdFlags | log.Lshortfile) // Set up reverse proxy to kontakt service kontaktURL, _ := url.Parse("http://webportal:8080") kontaktProxy := httputil.NewSingleHostReverseProxy(kontaktURL) http.Handle("/kontakt/", http.StripPrefix("/kontakt", kontaktProxy)) http.HandleFunc("/submit", enableCORS(handleSubmit)) http.HandleFunc("/health", enableCORS(func(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", "application/json") w.Write([]byte(`{"status":"ok"}`)) })) http.HandleFunc("/", enableCORS(func(w http.ResponseWriter, r *http.Request) { http.ServeFile(w, r, "index.html") })) http.HandleFunc("/evidence-aut", enableCORS(func(w http.ResponseWriter, r *http.Request) { http.ServeFile(w, r, "evidence-aut.html") })) http.HandleFunc("/kontakt", enableCORS(func(w http.ResponseWriter, r *http.Request) { // Check if kontakt service is already running resp, err := http.Get("http://webportal:8080/health") if err == nil && resp.StatusCode == 200 { http.Redirect(w, r, "http://webportal:8080/", http.StatusFound) return } // Start the service if not running cmd := exec.Command("make", "dev") cmd.Dir = "kontakt" err = cmd.Start() if err != nil { http.Error(w, "Failed to start kontakt service", http.StatusInternalServerError) return } // Wait briefly for service to start time.Sleep(2 * time.Second) http.Redirect(w, r, "http://webportal:8080/", http.StatusFound) })) port := os.Getenv("PORT") if port == "" { port = "80" } log.Printf("Server běží na portu %s", port) err := http.ListenAndServe(":"+port, nil) if err != nil { log.Fatalf("Chyba při spuštění serveru: %v", err) } } func enableCORS(next http.HandlerFunc) http.HandlerFunc { return func(w http.ResponseWriter, r *http.Request) { w.Header().Set("Access-Control-Allow-Origin", "*") w.Header().Set("Access-Control-Allow-Methods", "POST, GET, OPTIONS, PUT, DELETE") w.Header().Set("Access-Control-Allow-Headers", "Accept, Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization") if r.Method == "OPTIONS" { w.WriteHeader(http.StatusOK) return } if next != nil { next(w, r) } } } func handleSubmit(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", "application/json") if r.Method != http.MethodPost { if r.Method == http.MethodOptions { w.WriteHeader(http.StatusOK) return } w.WriteHeader(http.StatusMethodNotAllowed) w.Write([]byte(`{"error":"Only POST method is allowed"}`)) return } body, err := io.ReadAll(r.Body) if err != nil { log.Printf("Chyba při čtení těla požadavku: %v", err) w.WriteHeader(http.StatusBadRequest) w.Write([]byte(`{"error":"Failed to read request body"}`)) return } defer r.Body.Close() log.Printf("Přijatá data: %s", string(body)) var entry TripEntry err = json.Unmarshal(body, &entry) if err != nil { log.Printf("Chyba při parsování JSON: %v", err) w.WriteHeader(http.StatusBadRequest) w.Write([]byte(fmt.Sprintf(`{"error":"Failed to parse JSON: %v"}`, err))) return } if entry.Name == "" || entry.Destination == "" || entry.DateStart == "" || entry.DateEnd == "" || entry.Purpose == "" { log.Printf("Chybějící povinná pole: %+v", entry) w.WriteHeader(http.StatusBadRequest) w.Write([]byte(`{"error":"Missing required fields"}`)) return } if entry.KmEnd < entry.KmStart { log.Printf("Neplatný stav tachometru: %d -> %d", entry.KmStart, entry.KmEnd) w.WriteHeader(http.StatusBadRequest) w.Write([]byte(`{"error":"End kilometers must be greater than or equal to start kilometers"}`)) return } // Formátování dat do českého formátu czechMonths := []string{ "ledna", "února", "března", "dubna", "května", "června", "července", "srpna", "září", "října", "listopadu", "prosince", } // Zpracování začátku cesty parsedDateStart, err := time.Parse("2006-01-02", entry.DateStart) if err != nil { log.Printf("Chyba při parsování data začátku: %v", err) } // Zpracování konce cesty parsedDateEnd, err := time.Parse("2006-01-02", entry.DateEnd) if err != nil { log.Printf("Chyba při parsování data konce: %v", err) } err = sendEmail(entry, parsedDateStart, parsedDateEnd, czechMonths) if err != nil { log.Printf("Chyba při odesílání emailu: %v", err) w.WriteHeader(http.StatusInternalServerError) w.Write([]byte(fmt.Sprintf(`{"error":"Failed to send email: %v"}`, err))) return } w.WriteHeader(http.StatusOK) w.Write([]byte(`{"message":"Záznam byl úspěšně uložen a email odeslán"}`)) } func sendEmail(entry TripEntry, parsedDateStart, parsedDateEnd time.Time, czechMonths []string) error { smtpHost := "smtp.gmail.com" smtpPort := 465 sender := "contact.dvorak@gmail.com" password := "pnhkcsahbwsbpyqj" recipient := "contact.dvorak@gmail.com" m := gomail.NewMessage() m.SetHeader("From", sender) m.SetHeader("To", recipient) m.SetHeader("Subject", "Nový záznam o jízdě služebním autem") var htmlContent strings.Builder htmlContent.WriteString(`