/* -*- Mode: javascript; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set et sw=2 ts=2: */

function get_appropriate_ws_url()
{
    var pcol;
    var u = document.URL;

    /*
     * We open the websocket encrypted if this page came on an
     * https:// url itself, otherwise unencrypted
     */

    if (u.substring(0, 5) == "https") {
        pcol = "wss://";
        u = u.substr(8);
    } else {
        pcol = "ws://";
        if (u.substring(0, 4) == "http")
            u = u.substr(7);
    }

    u = u.split('/');

    return pcol + u[0];
}

var socket_task = new WebSocket(get_appropriate_ws_url(), "lws-task-protocol");

try {
    socket_task.onopen = function() {
        var connectEvent = new CustomEvent("connectEvent", {
			      detail: {
				        time: new Date(),
			      },
			      bubbles: true,
			      cancelable: true
		    });
        document.dispatchEvent(connectEvent);
    } 

    socket_task.onmessage = function got_packet(msg) {
        var messageEvent = new CustomEvent("messageEvent", {
			      detail: {
				        message: msg.data,
				        time: new Date(),
			      },
			      bubbles: true,
			      cancelable: true
		    });
        document.dispatchEvent(messageEvent);

        var msgs = new Array();
        var idx = 0;
        msgs[idx] = '';
        var c = 0;
        var instring = false;
        for(c = 0; c < msg.data.length; c++) {
            if(msg.data[c] == '"' && c > 0 && msg.data[c - 1] != '\\') instring = !instring;
            if(msg.data[c] == ';' && instring == false) {
                idx++;
                msgs[idx] = '';
            }
            if(msg.data[c] != ';' || instring == true) msgs[idx] += msg.data[c];
        }

        f = 0;
        while (f < msgs.length - 1) {
            var msg = new Array();
            instring = false;
            idx = 0;

            // Strip padding and trailing whitespace.
            var msgstr = msgs[f].replace(/^\s+||\s+$/g,'');

            if(msgstr == ';') {
                f++;
                continue;
            }

            msg[idx] = '';
            for(c = 0; c < msgstr.length; c++) {
                if(msgstr[c] == '"' && c > 0 && msgstr[c - 1] != '\\') {
                    instring = !instring;
                    continue;
                }
                if(msgstr[c] == ' ' && instring == false) {
                    msg[idx] = msg[idx].replace("\\\\","\\").replace("\\\"","\"");
                    idx++;
                    msg[idx] = '';
                }
                if(msgstr[c] != ' ' || instring == true) msg[idx] += msgstr[c];
            }

            var observeid = msg[0];
            var cmd = msg[1];
            var id = msg[2];

            if(cmd == "remove") {
                var removeEvent = new CustomEvent("removeEvent", {
			              detail: {
                        observeid: observeid,
                        id: id,
			              },
			              bubbles: true,
			              cancelable: true
		            });
                document.dispatchEvent(removeEvent);
            }
            else if(cmd == "move") {
                var moveEvent = new CustomEvent("moveEvent", {
			              detail: {
                        observeid: observeid,
                        id: id,
                        parentid: msg[3],
			              },
			              bubbles: true,
			              cancelable: true
		            });
                document.dispatchEvent(moveEvent);
            }
            else if(cmd == "create") {
                var createEvent = new CustomEvent("createEvent", {
			              detail: {
                        observeid: observeid,
                        id: id,
                        parentid: msg[3],
			              },
			              bubbles: true,
			              cancelable: true
		            });
                document.dispatchEvent(createEvent);
            }
            else if(cmd == "update") {
                var updateEvent = new CustomEvent("updateEvent", {
			              detail: {
                        observeid: observeid,
                        id: id,
                        name: msg[3],
                        value: msg[4],
			              },
			              bubbles: true,
			              cancelable: true
		            });
                document.dispatchEvent(updateEvent);
            }
            f++;
        }
    }

    socket_task.onclose = function(){
        var disconnectEvent = new CustomEvent("disconnectEvent", {
			      detail: {
				        time: new Date(),
			      },
			      bubbles: true,
			      cancelable: true
		    });
        document.dispatchEvent(disconnectEvent);
    }
} catch(exception) {
    alert('<p>Error' + exception + '</p>');
}