var hello = 'hello i2pcontrol';

function makeid(length) {
  var result = '';
  var characters =
    'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
  var charactersLength = characters.length;
  for (var i = 0; i < length; i++) {
    result += characters.charAt(Math.floor(Math.random() * charactersLength));
  }
  return result;
}

function send(
  message,
  control_host = "127.0.0.1",
  control_port = "7657",
  control_path = "jsonrpc"
) {
  async function postData(url = "", data = {}) {
    // Default options are marked with *
    let requestBody = JSON.stringify(data);
    //console.log("(i2pcontrol) sending request", requestBody);
    let opts = {
      method: 'POST', // *GET, POST, PUT, DELETE, etc.
      mode: 'cors', // no-cors, *cors, same-origin
      cache: 'no-cache', // *default, no-cache, reload, force-cache, only-if-cached
      credentials: 'same-origin', // include, *same-origin, omit
      headers: {
        'Content-Type': 'application/json',
      },
      redirect: 'follow', // manual, *follow, error
      referrerPolicy: 'no-referrer', // no-referrer, *client
      body: requestBody, // body data type must match "Content-Type" header
    };
    const response = await fetch(url, opts);
    return await response.json(); // parses JSON response into native JavaScript objects
  }

  //console.log("http://" + control_host + ":" + control_port + "/" + control_path)
  return postData(
    'http://' + control_host + ':' + control_port + '/' + control_path + '/',
    message
  );
}

async function authenticate(
  password = "itoopie",
  control_host = "127.0.0.1",
  control_port = "7657",
  control_path = "jsonrpc"
) {
  var json = new Object();
  json['id'] = makeid(6);
  json['jsonrpc'] = '2.0';
  json['method'] = 'Authenticate';
  json['params'] = new Object();
  json['params']['API'] = 1;
  json['params']['Password'] = password;
  return send(json, control_host, control_port, control_path);
}

async function GetToken(
  password = "itoopie",
  control_host = "127.0.0.1",
  control_port = "7657",
  control_path = "jsonrpc"
) {
  function gettoken(authtoken) {
    return authtoken.result.Token;
  }
  let me = authenticate(password, control_host, control_port, control_path);
  return await me.then(gettoken);
}

async function Echo(
  message,
  control_host = "127.0.0.1",
  control_port = "7657",
  control_path = "jsonrpc",
  password = "itoopie"
) {
  function echo(token) {
    console.log('(i2pcontrol) testing I2PControl connection');
    var json = new Object();
    json['id'] = makeid(6);
    json['jsonrpc'] = '2.0';
    json['method'] = 'Echo';
    json['params'] = new Object();
    json['params']['Token'] = token;
    json['params']['Echo'] = message;
    return send(json, control_host, control_port, control_path);
  }
  let token = GetToken(password, control_host, control_port, control_path);
  let done = await token.then(echo);
  return done;
}

function UpdateEchoElementByID(
  Query,
  ID,
  control_host = "127.0.0.1",
  control_port = "7657",
  control_path = "jsonrpc"
) {
  function updateelement(update) {
    //console.log("(i2pcontrol)", update);
    if (document.getElementById(ID) !== null)
      document.getElementById(ID).innerText = update;
  }
  let net = Echo(Query, control_host, control_port, control_path, password);
  net.then(updateleement);
}

async function GetRate(
  Query,
  control_host = "127.0.0.1",
  control_port = "7657",
  control_path = "jsonrpc",
  password = "itoopie"
) {
  function getrate(token) {
    var json = new Object();
    json['id'] = makeid(6);
    json['jsonrpc'] = '2.0';
    json['method'] = 'I2PControl';
    json['params'] = new Object();
    json['params']['Token'] = token;
    json['params']['Stat'] = Query;
    json['params']['Period'] = 2000;
    return send(json, control_host, control_port, control_path);
  }
  let token = GetToken(password, control_host, control_port, control_path);
  let done = await token.then(getrate);
  return done;
}

function UpdateGetRateElementByID(
  Query,
  ID,
  control_host = "127.0.0.1",
  control_port = "7657",
  control_path = "jsonrpc"
) {
  function updateelement(update) {
    //console.log("(i2pcontrol)", update);
    if (document.getElementById(ID) !== null)
      document.getElementById(ID).innerText = update;
  }
  let net = GetRate(Query, control_host, control_port, control_path, password);
  net.then(updateleement);
}

async function I2PControl(
  Query,
  control_host = "127.0.0.1",
  control_port = "7657",
  control_path = "jsonrpc",
  password = "itoopie"
) {
  function i2pcontrol(token) {
    var json = new Object();
    json['id'] = makeid(6);
    json['jsonrpc'] = '2.0';
    json['method'] = 'I2PControl';
    json['params'] = new Object();
    json['params']['Token'] = token;
    json['params'][Query] = null;
    return send(json, control_host, control_port, control_path);
  }
  let token = GetToken(password, control_host, control_port, control_path);
  let done = await token.then(i2pcontrol);
  return done;
}

function UpdateI2PControlElementByID(
  Query,
  ID,
  control_host = "127.0.0.1",
  control_port = "7657",
  control_path = "jsonrpc"
) {
  function updateelement(update) {
    //console.log("(i2pcontrol)", update);
    if (document.getElementById(ID) !== null)
      document.getElementById(ID).innerText = update;
  }
  let net = I2PControl(
    Query,
    control_host,
    control_port,
    control_path,
    password
  );
  net.then(updateleement);
}

async function RouterInfo(
  Query,
  control_host = "127.0.0.1",
  control_port = "7657",
  control_path = "jsonrpc",
  password = "itoopie"
) {
  function routerinfo(token) {
    var json = new Object();
    json['id'] = makeid(6);
    json['jsonrpc'] = '2.0';
    json['method'] = 'RouterInfo';
    json['params'] = new Object();
    json['params']['Token'] = token;
    json['params'][Query] = null;
    return send(json, control_host, control_port, control_path);
  }
  let token = GetToken(password, control_host, control_port, control_path);
  let done = await token.then(routerinfo);
  return done;
}

function UpdateRouterInfoElementByID(
  Query,
  ID,
  control_host = "127.0.0.1",
  control_port = "7657",
  control_path = "jsonrpc",
  password = "itoopie"
) {
  function updateelement(update) {
    /*console.log(
      "(i2pcontrol) element",
      update.result[Query],
      ID,
      document.getElementById(ID)
    );*/
    if (document.getElementById(ID) !== null)
      document.getElementById(ID).innerText = update.result[Query];
  }

  let net = RouterInfo(
    Query,
    control_host,
    control_port,
    control_path,
    password
  );
  net.then(updateelement);
}

async function RouterManager(
  Query,
  control_host = "127.0.0.1",
  control_port = "7657",
  control_path = "jsonrpc",
  password = "itoopie"
) {
  function routermanager(token) {
    var json = new Object();
    json['id'] = makeid(6);
    json['jsonrpc'] = '2.0';
    json['method'] = 'RouterManager';
    json['params'] = new Object();
    json['params']['Token'] = token;
    json['params'][Query] = null;
    return send(json, control_host, control_port, control_path);
  }
  let token = GetToken(password, control_host, control_port, control_path);
  let done = await token.then(routermanager);
  return done;
}

function UpdateRouterManagerElementByID(
  Query,
  ID,
  control_host = "127.0.0.1",
  control_port = "7657",
  control_path = "jsonrpc",
  password = "itoopie"
) {
  function updateelement(update) {
    //console.log("(i2pcontrol)", update);
    if (document.getElementById(ID) !== null)
      document.getElementById(ID).innerText = update;
  }
  let net = RouterManager(
    Query,
    control_host,
    control_port,
    control_path,
    password
  );
  net.then(updateleement);
}

async function NetworkSetting(
  Query,
  control_host = "127.0.0.1",
  control_port = "7657",
  control_path = "jsonrpc",
  password = "itoopie"
) {
  function networksetting(token) {
    var json = new Object();
    json['id'] = makeid(6);
    json['jsonrpc'] = '2.0';
    json['method'] = 'NetworkSetting';
    json['params'] = new Object();
    json['params']['Token'] = token;
    json['params'][Query] = null;
    return send(json, control_host, control_port, control_path);
  }
  let token = GetToken(password, control_host, control_port, control_path);
  let done = await token.then(networksetting);
  return done;
}

function UpdateNetworkSettingElementByID(
  Query,
  ID,
  control_host = "127.0.0.1",
  control_port = "7657",
  control_path = "jsonrpc",
  password = "itoopie"
) {
  function updateelement(update) {
    //console.log("(i2pcontrol)", update);
    document.getElementById(ID).innerText = update;
  }
  let net = NetworkSetting(
    Query,
    control_host,
    control_port,
    control_path,
    password
  );
  net.then(updateleement);
}

function UpdateContents() {
  UpdateRouterInfoElementByID('i2p.router.status', 'router-status');
  UpdateRouterInfoElementByID('i2p.router.uptime', 'router-uptime');
  UpdateRouterInfoElementByID('i2p.router.version', 'router-version');
  UpdateRouterInfoElementByID(
    'i2p.router.net.bw.inbound.1s',
    'router-net-bw-inbound-1s'
  );
  UpdateRouterInfoElementByID(
    'i2p.router.net.bw.inbound.15s',
    'router-net-bw-inbound-15s'
  );
  UpdateRouterInfoElementByID(
    'i2p.router.net.bw.outbound.1s',
    'router-net-bw-outbound-1s'
  );
  UpdateRouterInfoElementByID(
    'i2p.router.net.bw.outbound.15s',
    'router-net-bw-outbound-15s'
  );
  UpdateRouterInfoElementByID('i2p.router.net.status', 'router-net-status');
  UpdateRouterInfoElementByID(
    'i2p.router.net.tunnels.participating',
    'router-net-tunnels-participating'
  );
  UpdateRouterInfoElementByID(
    'i2p.router.netdb.activepeers',
    'router-netdb-activepeers'
  );
  UpdateRouterInfoElementByID(
    'i2p.router.netdb.fastpeers',
    'router-netdb-fastpeers'
  );
  UpdateRouterInfoElementByID(
    'i2p.router.netdb.highcapacitypeers',
    'router-netdb-highcapacitypeers'
  );
  UpdateRouterInfoElementByID(
    'i2p.router.netdb.isreseeding',
    'router-netdb-isreseeding'
  );
  UpdateRouterInfoElementByID(
    'i2p.router.netdb.knownpeers',
    'router-netdb-knownpeers'
  );
}

var done = Echo(hello);
done.then(Done);

function Done(output) {
  console.log('(i2pcontrol) I2PControl connection tested,', output);
  return output;
}