var THRESHOLD = 13,

    DROPCOUNT = 12;

var swTw = {

    "keyword" : "#enmi",

    "columns_words" : [

        "confiance",

        "croyance",

        "crédit",

        "trace",

        "foi",

        "risque", 

        "assurance", 

        "démocratie", 

        "expertise",

        "catastrophe",

        "transparence",

        "politique",

    ],

    "tweets" : [],

    "tweetsIndex" : [],

    "twInCol" : [],

    "firstDisplayedTweet" : 0,

    "cursor" : -1,

    "annotations" : {

        "positive" : {

            "colors" : {

                "tweet" : "#c5e7cd",

                "timeline" : "#1D973D"

            }

        },

        "negative" : {

            "colors" : {

                "tweet" : "#f6ced0",

                "timeline" : "#CE0A15"

            }

        },

        "reference" : {

            "colors" : {

                "tweet" : "#efefa1",

                "timeline" : "#C5A62D"

            }

        },

        "question" : {

            "colors" : {

                "tweet" : "#bfdbec",

                "timeline" : "#036AAE"

            }

        }

    }

}

function highlightKeyword(stra, strb, color) {

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

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

}

function highlightText(txt) {

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

        return highlightKeyword(a,b, '#333333');

    }, txt);

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

        return (b.keyword ? highlightKeyword(a,b.keyword,b.colors.timeline) : 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 tweet = swTw.tweets[swTw.cursor],

            html = '<img src="'

                + tweet.profile_image_url

                + '" /><p>@'

                + tweet.from_user

                + ' ('

                + tweet.from_user_name

                + ')'

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

                + highlightText(tweet.text)

                + '</p>';

        $("#tweetcont").html(html)

    } else {

        $("#tweetcont").html("")

    }

}

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).animate({

                "width": "0px"

            },

            2000,

            function() {

                $(this).detach();

            })

        });

    });

    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),

                icol = ( swTw.twInCol[iword*2+1].length < swTw.twInCol[iword*2].length ? iword*2+1 : iword*2 ),

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

                colA = swTw.colAnnot[iword],

                ttl = 0;

            _(swTw.annotations).each(function(v,k) {

               if (tweet.text.indexOf(v.keyword) != -1) {

                   colA[k]++;

                   ttl++;

               }

            });

            colA.total += Math.max(1,ttl);

            $('#tube_' + icol).append(

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

                + elid

                + '" style="margin-right: 500px;"><img src="'

                + tweet.profile_image_url

                + '" /></div>'

            );

            tweet.elements.push(elid);

            swTw.twInCol[icol].push(tweet.id_str);

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

                "margin-right" : "0px"

            },

            2000);

        })

        swTw.tweets.push(tweet);

        swTw.tweetsIndex.push(tweet.id_str);

    });

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

        return col.length > THRESHOLD

    })) {

        dropOldTweets();

    }

    _(swTw.colAnnot).each(function(colA, i) {

        _(swTw.annotations).each(function(v, k) {

           $("#polemic_" + i + "_" + k).css("width", ~~(100 * colA[k] / colA.total) + "%"); 

        });

    })

}

function retrieveTweets() {

    var options =  {

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

//        "lang" : "fr",

        "keyword" : "#enmi",

        "pages" : 1,

        "rpp" : 100,

        "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 class="tube" id="tube_'

            + (2*i)

            + '"></div><div class="tube" id="tube_'

            + (2*i+1)

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

            + _(swTw.annotations).map(function(v,k) {

                return '<div class="polemicvol" id="polemic_' 

                    + i

                    + '_'

                    + k

                    + '" style="background:'

                    + v.colors.timeline

                    + '"></div>'

            }).join('')

            +'<h3>'

            + mot

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

        }

    ).join("") );

   for (var i = 0; i < swTw.columns_words.length * 2; i++) {

       swTw.twInCol.push([]);

   }

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

      var res = { "total" : 0 }

      _(swTw.annotations).map(function(v,k) {

          res[k] = 0;

      });

      return res;

   });

   retrieveTweets();

   setInterval(retrieveTweets, 5000);

   setInterval(nextTweet, 6000);

});