Url.h

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#pragma once
 
#include "AudioTools/CoreAudio/AudioBasic/Str.h"
#include "AudioTools/CoreAudio/AudioLogger.h"
 
namespace audio_tools {
 
class Url {
 public:
  Url() = default;
 
  Url(const char* url) {
    LOGD("Url %s", url);
    setUrl(url);
  }
 
  const char* url() { return urlStr.c_str(); }
  const char* path() { return pathStr.c_str(); }
  const char* host() { return hostStr.c_str(); }
  const char* protocol() { return protocolStr.c_str(); }
  const char* urlRoot() {
    return urlRootStr.c_str();
  }  // prefix w/o path -> https://host:port
  int port() { return portInt; }
  // support https on custom ports
  bool isSecure() { return portInt == 443 || protocolStr.startsWith("https"); }
 
  void setUrl(const char* url) {
    LOGD("setUrl %s", url);
    this->urlStr = url;
    parse();
  }
 
 protected:
  Str pathStr{0};
  Str hostStr{0};
  Str protocolStr{0};
  Str urlRootStr{0};
  Str urlStr{0};
  int portInt = 0;
 
  void parse() {
    LOGI("Url::parse");
 
    int protocolEnd = urlStr.indexOf("://");
    if (protocolEnd == -1) {
      return;
    }
    protocolStr.substring(urlStr, 0, protocolEnd);
    int pathStart = urlStr.indexOf("/", protocolEnd + 4);
    int portStart = urlStr.indexOf(":", protocolEnd + 3);
    // check if the found portStart isn't part of the path
    if (pathStart>=0) portStart = portStart < pathStart ? portStart : -1;
    int hostEnd = portStart != -1 ? portStart : pathStart;
    // we have not path -> so then host end is the end of string
    if (hostEnd == -1) {
      hostEnd = urlStr.length();
    }
    hostStr.substring(urlStr, protocolEnd + 3, hostEnd);
    if (portStart > 0) {
      portInt = atoi(urlStr.c_str() + portStart + 1);
    } else {
      if (protocolStr.startsWith("https"))
        portInt = 443;
      else if (protocolStr.startsWith("http"))
        portInt = 80;
      else if (protocolStr.startsWith("ftp"))
        portInt = 21;
      else
        portInt = -1;  // undefined
    }
    if (pathStart <= 0) {
      // we have no path
      pathStr = "/";
      urlRootStr = urlStr;
    } else {
      pathStr.substring(urlStr, pathStart, urlStr.length());
      pathStr.trim();
      urlRootStr.substring(urlStr, 0, pathStart);
    }
    LOGI("url->%s", url());
    LOGI("host->%s", host());
    LOGI("protocol->%s", protocol());
    LOGI("path->%s", path());
    LOGI("port->%d", port());
  }
};
 
}  // namespace audio_tools