var AVATARWIDTH = 35,

    COLUMNWIDTH = 2,

    COLUMNHEIGHT = 420,

    THRESHOLD = 24,

    DROPCOUNT = 12;

var swTw = {

    "keyword" : "#enmi",

    "columns_words" : [

        "confiance",

        "croyance",

        "crédit",

        "trace",

        "foi",

        "risque", 

        "assurance", 

        "démocratie", 

        "expertise",

        "catastrophe",

        "transparence", 

        "politique"

    ],

    "tweets" : [],

    "tweetsIndex" : [],

    "firstDisplayedTweet" : 0,

    "cursor" : -1,

/*    "annotations" : {

        "positive" : {

            "keyword" : "+",

            "colors" : {

                "tweet" : "#c5e7cd",

                "timeline" : "#00ff00"

            }

        },

        "negative" : {

            "keyword" : "-",

            "colors" : {

                "tweet" : "#f6ced0",

                "timeline" : "#ff0000"

            }

        },

        "reference" : {

            "keyword" : "#",

            "colors" : {

                "tweet" : "#efefa1",

                "timeline" : "#ffff00"

            }

        },

        "question" : {

            "keyword" : "?",

            "colors" : {

                "tweet" : "#bfdbec",

                "timeline" : "#0000ff"

            }

        }

} */

}

function highlightKeyword(stra, strb) {

    var rgxp = RegExp( '(' + strb.replace(/(\W)/gm, '\\$1') + ')', "gim");

    return stra.replace(rgxp, '<span class="highlight">$1</span>');

}

function highlightText(txt) {

    var res = highlightKeyword(txt, swTw.keyword);

    res = swTw.columns_words.reduce(function(a, b) {

        return highlightKeyword(a,b);

    }, res);

/*    res = _(swTw.annotations).reduce(function(a, b) {

        return (b.keyword ? highlightKeyword(a,b.keyword) : a);

    }, res); */

    return res;

}

function nextTweet() {

    if (!swTw.tweets.length) {

        return;

    }

    if (swTw.cursor < swTw.tweets.length - 1) {

        swTw.cursor = Math.max(swTw.cursor + 1, swTw.tweets.length - 120);

        var nTweet = swTw.cursor;

    } else {

        var nTweet = swTw.tweets.length - 1 - ~~( Math.random() * Math.min(swTw.tweets.length,50) );

    }

    var tweet = swTw.tweets[nTweet];

    $("#tweetcont").html('<img src="'

        + tweet.profile_image_url

        + '" /><p>@'

        + tweet.from_user

        + ' ('

        + tweet.from_user_name

        + ')'

        + '</p><p class="tweet_text">'

        + highlightText(tweet.text)

        + '</p>');

/*    var bgcolor = '';

    for (var i in swTw.annotations) {

        if (swTw.annotations[i].keyword) {

            if (tweet.text.indexOf(swTw.annotations[i].keyword) != -1) {

                bgcolor = swTw.annotations[i].colors.tweet;

                break;

            }

        }

    } */

    $("#tweetcont").css("background",bgcolor);

}

function dropOldTweets() {

    var _newPos = swTw.firstDisplayedTweet + DROPCOUNT;

    _(swTw.tweets.slice(swTw.firstDisplayedTweet,_newPos)).each(function(tweet) {

        swTw.twInCol = _(swTw.twInCol).map(function(col) {

           return _(col).without(tweet.id_str);

        });

        _(tweet.elements).each(function(elid) {

            $("#" + elid).fadeOut(2000, function() {

                $(this).detach();

            });

        });

    });

    _(swTw.tweets.slice(_newPos)).each(function(tweet) {

        _(tweet.elements).each(function(elid) {

            var iword = parseInt(elid.split('_')[2]),

                iel = swTw.twInCol[iword].indexOf(tweet.id_str),

                posx = COLUMNHEIGHT - AVATARWIDTH * (1 + ~~( iel / COLUMNWIDTH)),

                posy = AVATARWIDTH * (iel % COLUMNWIDTH);

            $("#" + elid).delay(500).animate({

                "top" : posy + "px",

                "left" : posx + "px"

            },

            500);

        });

    });

    console.log("fin");

    swTw.firstDisplayedTweet = _newPos;

}

function callbackTweets(tweets) {

    _(tweets).each(function(tweet) {

        var tl = tweet.text.toLowerCase();

        tweet.columns = swTw.columns_words.filter(function(word) {

            return tl.search(word) != -1

        });

        tweet.elements = [];

        _(tweet.columns).each(function(word) {

            var iword = swTw.columns_words.indexOf(word),

                tcl = swTw.twInCol[iword],

                tclen = tcl.length;

            var posx = COLUMNHEIGHT - AVATARWIDTH * (1 + ~~( tclen / COLUMNWIDTH)),

                posy = AVATARWIDTH * (tclen % COLUMNWIDTH),

                elid = 'avatar_' + tweet.id_str + '_' + iword,

                bgcolor = '#999999';

/*            for (var i in swTw.annotations) {

                if (swTw.annotations[i].keyword) {

                    if (tweet.text.indexOf(swTw.annotations[i].keyword) != -1) {

                        bgcolor = swTw.annotations[i].colors.timeline;

                        break;

                    }

                }

        } */

            $('#column_' + iword).append(

                '<div class="avatar" id="'

                + elid

                + '" style="left: -200px; top: '

                + posy

                + 'px; background: '

                + bgcolor

                + '"><img src="'

                + tweet.profile_image_url

                + '" /></div>'

            );

            tweet.elements.push(elid);

            tcl.push(tweet.id_str);

            $("#" + elid).animate({

                "left" : posx + "px"

            }, 2000);

        })

        swTw.tweets.push(tweet);

        swTw.tweetsIndex.push(tweet.id_str);

    });

    while (_(swTw.twInCol).any(function(col) {

        return col.length > THRESHOLD

    })) {

        dropOldTweets();

    }

}

function retrieveTweets() {

    var options =  {

        "keyword" : swTw.columns_words.join(" OR "),

        "lang" : "fr",

//        "keyword" : "#enmi",

        "pages" : 1,

        "rpp" : 50,

        "cbEnd" : function() {

            callbackTweets(this.tweets);

            }

        }

    if (swTw.tweets.length) {

        options.since_id = swTw.tweets[swTw.tweets.length - 1].id_str;

    }

    getTweets(options);

}

function getTweets(options) {

    function getTweetUrl(url) {

        $.getJSON(url, function(data) {

            options.tweets = options.tweets.concat(data.results);

            options.currentPage = data.page;

            if (options.cbData) {

                options.cbData();

            }

            if (data.next_page && data.page < options.pages) {

                getTweetUrl(baseurl + data.next_page + suffix);

            } else {

                options.tweets.sort(function(a,b) {

                   return a.id - b.id; 

                });

                if (options.cbEnd) {

                    options.cbEnd();

                }

            }

        });

    }

    options.tweets = [];

    options.pages || (options.pages = 1);

    options.rpp || (options.rpp = 100);

    options.currentPage = 0;

    var baseurl = "http://search.twitter.com/search.json",

        suffix = (options.since_id ? "&since_id=" + options.since_id : '' ) + "&callback=?",

        jsonurl = baseurl + "?q=" + encodeURIComponent(options.keyword)+ "&rpp=" + options.rpp

            + (options.lang ? "&lang=" + options.lang : '' ) + suffix;

    getTweetUrl(jsonurl);

}

$(document).ready(function() {

    $("#columncont").html( swTw.columns_words.map(

        function(mot, i) {

            return '<div class="column" id="column_'

            + i

            + '"><div class="column-tube"></div><div class="column-title"><h3>'

            + mot

            + '</h3></div></div>'

        }

    ).join("") );

   swTw.twInCol = swTw.columns_words.map(function() {

       return [];

   });

   retrieveTweets();

   setInterval(retrieveTweets,5000);

   setInterval(nextTweet, 3000);

});