MPVRemote/server/server.js

var restify = require('restify');
var bunyan = require('bunyan');
var Q = require("q");
var FS = require("q-io/fs");
const net = require('net');

String.prototype.format = function() {
    var formatted = this;
    for (var i = 0; i < arguments.length; i++) {
        var regexp = new RegExp('\\{'+i+'\\}', 'gi');
        formatted = formatted.replace(regexp, arguments[i]);
    }
    return formatted;
};

// CONNECTIONS AND STUF
var socketPath = '/home/daddel9/.mpv-sock';
var log = bunyan.createLogger({name: 'MpvRemote'});

// SETUP
var server = restify.createServer();
server.pre(restify.pre.sanitizePath());


// Serve static files
server.get(/\/client\/?.*/, restify.serveStatic({
  directory: __dirname
}));


// Cödê


global.mpvdata = [];
global.mpvsocket = null;
global.mpvisConnected = false;
global.mpvconnect = function() {
  defer = Q.defer();

  log.info("socket is {0} isConnected is {1}".format(global.mpvsocket, global.mpvisConnected));
  if(global.mpvisConnected) {
    defer.resolve(global.mpvsocket);
    return defer.promise;
  }

  sock = net.connect(socketPath);

  sock.on("connect", function() {
    log.info("socket had connect event");
    global.mpvsocket = sock;
    global.mpvisConnected=true;
    defer.resolve(sock)
  });
  sock.on("error", function(err) {
    global.mpvisConnected=false;
    defer.reject(err)
  });
  sock.on("end", function() {
    global.mpvisConnected=false;
    defer.reject(new Error("socket ended"))
  });
  sock.on("data", function(dta) {
    log.info("had data '{0}'".format(dta));
    global.mpvdata.push(dta)
  });
  return defer.promise;
}


function buildCommand(cmd, params) {
  paramsStr="";
  params.forEach(function(val, idx, arr) {
    paramsStr = paramsStr+', "{0}"'.format(val);
  })
  ret = '{ "command": [ "{0}"{1} ] }\n'.format(cmd, paramsStr);
  return ret;
}

function writeCommand(cmd, params) {
  defer = Q.defer();
  global.mpvconnect()
    .then( function(sock) {
      log.info("can write in "+sock);
      try {
        cmdStr = buildCommand(cmd, params);
        log.info("trying to write cmd '{0}' to sock".format(cmdStr));
        sock.write(cmdStr);
        defer.resolve();
      } catch(e) {
        log.error("got error "+e);
        defer.reject(e);
      }
    }, function(reason) {
      defer.reject(reason);
    });
  return defer.promise;
}


// /seekTime/:time — seeks relative
// /seekPercent/:percent — seeks percent absolute
// /seekChapter/:where — seeks to prev (where=-x) or next (where=+x) chapter
// /volume/:amount — increases (amount=+x) or decreases (amount=-x) volume
// /progress — show osd progress
// /playpause — toggles playing
// /muteunmute — toggles muting

server.get('/seek/:time', function (req, res, next) {
  log.info("seek "+req.params.time);
  writeCommand("seek", [req.params.time])
    .then(function() {
      res.send({"success":true});
      return next(false);
    }, function(reason) {
      res.send({"success":false, "reason": reason});
      return next(false);
    });
});

server.get('/volume/:amount', function (req, res, next) {
  log.info("volume "+req.params.amount);
  writeCommand("add", ["volume", req.params.amount])
    .then(function() {
      res.send({"success":true});
      return next(false);
    }, function(reason) {
      res.send({"success":false, "reason": reason});
      return next(false);
    });
});

server.get('/playpause', function (req, res, next) {
  log.info("playpause ");
  writeCommand("cycle", ["pause"])
    .then(function() {
      res.send({"success":true});
      return next(false);
    }, function(reason) {
      res.send({"success":false, "reason": reason});
      return next(false);
    });
});

server.get('/muteunmute', function (req, res, next) {
  log.info("muteunmute ");
  writeCommand("cycle", ["mute"])
    .then(function() {
      res.send({"success":true});
      return next(false);
    }, function(reason) {
      res.send({"success":false, "reason": reason});
      return next(false);
    });
});

server.listen(8080, function() {
  console.log('%s listening at %s', server.name, server.url);
});