/**
 * Created by knut on 14-11-19.
 */
var actors    = {};
var messages  = [];
var notes     = [];
var Logger = require('../../logger');
var log = new Logger.Log();



exports.addActor = function(id,name,description){
    // Don't allow description nulling
    var old = actors[id];
    if ( old && name === old.name && description == null ) return;

    // Don't allow null descriptions, either
    if ( description == null ) description = name;

    actors[id] = {name:name, description:description};
};

exports.addMessage = function(idFrom, idTo, message,  answer){
    messages.push({from:idFrom, to:idTo, message:message, answer:answer});
};

/**
 *
 */
exports.addSignal = function(idFrom, idTo, message,  messageType){
    log.debug('Adding message from='+idFrom+' to='+idTo+' message='+message+' type='+messageType);
    messages.push({from:idFrom, to:idTo, message:message, type:messageType});
};

exports.getMessages = function(){
    return messages;
};

exports.getActors = function(){
    return actors;
};
exports.getActor = function(id){
    return actors[id];
};
exports.getActorKeys = function(){
    return Object.keys(actors);
};

exports.clear = function(){
    actors   = {};
    messages = [];
};

exports.LINETYPE = {
    SOLID        : 0  ,
    DOTTED       : 1  ,
    NOTE         : 2  ,
    SOLID_CROSS  : 3  ,
    DOTTED_CROSS : 4  ,
    SOLID_OPEN   : 5  ,
    DOTTED_OPEN  : 6  ,
    LOOP_START   : 10 ,
    LOOP_END     : 11 ,
    ALT_START    : 12 ,
    ALT_ELSE     : 13 ,
    ALT_END      : 14 ,
    OPT_START    : 15 ,
    OPT_END      : 16
};

exports.ARROWTYPE = {
    FILLED       : 0,
    OPEN         : 1
};

exports.PLACEMENT = {
    LEFTOF       : 0,
    RIGHTOF      : 1,
    OVER         : 2
};

exports.addNote = function (actor, placement, message){
    var note = {actor:actor, placement: placement, message:message};

    // Coerce actor into a [to, from, ...] array
    var actors = [].concat(actor, actor);

    notes.push(note);
    messages.push({from:actors[0], to:actors[1], message:message, type:exports.LINETYPE.NOTE, placement: placement});
};


exports.parseError = function(err,hash){
    global.mermaidAPI.parseError(err,hash);
};

exports.apply = function(param){
    if(param instanceof Array ){
        param.forEach(function(item){
            exports.apply(item);
        });
    } else {
        // log.debug(param);
        switch(param.type){
            case 'addActor':
                exports.addActor(param.actor, param.actor, param.description);
                break;
            case 'addNote':
                exports.addNote(param.actor,param.placement, param.text);
                break;
            case 'addMessage':
                exports.addSignal(param.from, param.to, param.msg, param.signalType);
                break;
            case 'loopStart':
                //log.debug('Loop text: ',param.loopText);
                exports.addSignal(undefined, undefined, param.loopText, param.signalType);
                //yy.addSignal(undefined, undefined, $2, yy.LINETYPE.LOOP_START);
                break;
            case 'loopEnd':
                exports.addSignal(undefined, undefined, undefined, param.signalType);
                break;
            case 'optStart':
                //log.debug('Loop text: ',param.loopText);
                exports.addSignal(undefined, undefined, param.optText, param.signalType);
                //yy.addSignal(undefined, undefined, $2, yy.LINETYPE.LOOP_START);
                break;
            case 'optEnd':
                exports.addSignal(undefined, undefined, undefined, param.signalType);
                break;
            case 'altStart':
                //log.debug('Loop text: ',param.loopText);
                exports.addSignal(undefined, undefined, param.altText, param.signalType);
                //yy.addSignal(undefined, undefined, $2, yy.LINETYPE.LOOP_START);
                break;
            case 'else':
                exports.addSignal(undefined, undefined, param.altText, param.signalType);
                break;
            case 'altEnd':
                exports.addSignal(undefined, undefined, undefined, param.signalType);
                break;
        }
    }
};