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/*Script goal: to simplify moving between maps in Roll20.
    Specific Goals:
        1. Moving a token to a designated location on a map should move the player(s) to the associated map if GM permission is set to true
        2. GM should be able to enter in a specific map to travel to via API command dialog.
        3. I think that's it.
*/
var INTERACTIVEMAP = INTERACTIVEMAP || (function(){
    'use strict';

    var version = '0.0.1',
        lastUpdate = 1463096043,
        schemaVersion = 0.1,
        defaults = {
            css: {
                button: {
                    'border': '1px solid #cccccc',
                    'border-radius': '1em',
                    'background-color': '#006dcc',
                    'margin': '0 .1em',
                    'font-weight': 'bold',
                    'padding': '.1em 1em',
                    'color': 'white'
                }
            }
        },
        templates = {},

    ch = function (c) {
        var entities = {
    		'<' : 'lt',
			'>' : 'gt',
			"'" : '#39',
			'@' : '#64',
			'{' : '#123',
			'|' : '#124',
			'}' : '#125',
			'[' : '#91',
			']' : '#93',
			'"' : 'quot',
			'-' : 'mdash',
			' ' : 'nbsp'
		};

		if(_.has(entities,c) ){
			return ('&'+entities[c]+';');
		}
		return '';
	},
    
    buildTemplates = function() {
        templates.cssProperty =_.template(
            '<%=name %>: <%=value %>;'
        );

        templates.style = _.template(
            'style="<%='+
                '_.map(css,function(v,k) {'+
                    'return templates.cssProperty({'+
                        'defaults: defaults,'+
                        'templates: templates,'+
                        'name:k,'+
                        'value:v'+
                    '});'+
                '}).join("")'+
            ' %>"'
        );
        
        templates.button = _.template(
            '<a <%= templates.style({'+
                'defaults: defaults,'+
                'templates: templates,'+
                'css: _.defaults(css,defaults.css.button)'+
                '}) %> href="<%= command %>"><%= label||"Button" %></a>'
        );
    },
    
    makeButton = function(command, label, backgroundColor, color){
        return templates.button({
            command: command,
            label: label,
            templates: templates,
            defaults: defaults,
            css: {
                color: color,
                'background-color': backgroundColor
            }
        });
    },
    
    checkInstall = function() {    
        log('-=> Interactive Map v'+version+' <=-  ['+(new Date(lastUpdate*1000))+']');
        if( ! _.has(state,'INTERACTIVEMAP') || state.INTERACTIVEMAP.version !== schemaVersion) {
            log('  > Updating Schema to v'+schemaVersion+' <');
                		switch(state.INTERACTIVEMAP && state.INTERACTIVEMAP.version) {
				case 0.2:
					state.INTERACTIVEMAP.config.labelGranted = false;
                    /* break; */
                    /* falls through */
					
                case 'UpdateSchemaVersion':
                    state.INTERACTIVEMAP.version = schemaVersion;
                    break;

                default:
					state.INTERACTIVEMAP = {
						version: schemaVersion,
					};
					break;
			}
		}
        //getDestinations();
	},
    
    movePlayer = function(destination, player){
        //Campaign().set({playerspecificpages: player.id: destination[0].id})
    },
    
    moveCurrentParty = function(destination){
        //Campaign().set({playerpageid: destination[0].id});
    },
    
    moveAllPlayers = function(destination){
        //Campaign().set({playerpageid: destination[0].id, playerspecificpages: false});
    },
  
    getDestinationCollisions = function(token) {
        var pageId,
        destinations,
        collisions,
        tokenControl,
        msg = '',
        lastCollision;
        pageId = token.get('_pageid');
        destinations = getDestinations(pageId);
        collisions = TokenCollisions.getCollisions(token, destinations);
        lastCollision = _.last(collisions);
        tokenControl =  token.get('controlledby').split(",");
        if(lastCollision && _.contains(tokenControl, 'all')){
            //return lastCollision;
            msg += makeButton(
                '!nav all ' + lastCollision, 
                'ALL', '#faa732'
            );
            msg += makebutton(
                '!nav current ' + lastCollision, 
                'CURRENT PARTY', '#5bb75b'
            );
        } else if(lastCollision && !_.contains(tokenControl, 'all')){
            msg += makeButton(
                '!nav all ' + lastCollision, 
                'ALL', '#faa732'
            );
            msg += makeButton(
                '!nav current ' + lastCollision, 
                'CURRENT PARTY', '#5bb75b'
            );
            msg += makeButton(
                '!nav player ' + lastCollision + ' ' + tokenControl[0], 
                'SPECIFIC PLAYER');
            //call make buttons for all, current party, and player
        }
   },
    
    getDestinations = function(pageId){
        return findObjs({
            pageid: pageId,
            type: 'graphic',
            layer: /*'map' ||*/ 'gmlayer',
            statusmarkers: 'flying-flag'
        });
    },
    
    handleInput = function(msg_orig){
        var msg = _.clone(msg_orig),
            args,
            who,
            page,
            player;
        
        if (msg.type !== "api" || !playerIsGM(msg.playerid)) {
            return;
        }
        
        who=getObj('player',msg.playerid).get('_displayname');
        
        args = msg.content.split(/\s+--/);
        switch(args[0]) {
            case '!nav':
                if(0 === args.length || _.contains(args,'help')) {
                    showHelp(who);
                    return;
                }
                if(args[2] && args[3]){
                    page = getObj('page', args[2]);
                    player = getObj('player', args[3]);
                }
                switch(args[1]){
                    
                    case 'all':
                        if(page){
                            moveAllPlayers(page);
                        }else{
                            sendChat('','/w "'+who+'" '+
                                '<div><b>No pageid associated with that destination:</div> '+a+'</div>'
                            );
                        }
                        break;

                    case 'current':
                        if(page){
                            moveCurrentParty(page);
                        } else{
                            sendChat('','/w "'+who+'" '+
                                '<div><b>No pageid associated with that destination:</div> '+a+'</div>'
                            );
                        }
                        break;

                    case 'player':
                        if(page && player){
                            movePlayer(page, player);
                        }else{
                            sendChat('','/w "'+who+'" '+
                                '<div><b>No pageid associated with that destination or no specific player named:</div> '+a+'</div>'
                            );
                        }
                        break;

                    default:
                        sendChat('','/w "'+who+'" '+
                            '<div><b>Unsupported Option:</div> '+a+'</div>'
                        );
                }
                    
                break;
        }
    },
    
    RegisterEventHandlers = function() {
        on('change:graphic', getDestinationCollisions);
        //on('chat:message', handleInput);
    };
    
    return {
        CheckInstall: checkInstall,
    	RegisterEventHandlers: RegisterEventHandlers
	};
}());

on("ready",function(){
    'use strict';
    
    INTERACTIVEMAP.CheckInstall();
    INTERACTIVEMAP.RegisterEventHandlers();
});