// <date>09.10.2015</date>
// <summary>grammarprocessor class</summary>
define([], function () {

    /// <summary> The named register exponent. </summary>
    var NamedRegExp = function (pattern, string) {
        pattern = pattern.toString();
        var regexp = [];
        var groupRX = /\(\?\<(.*?)\>\s?(.*?)\)/i;
        while (groupRX.test(pattern)) {

            var match = groupRX.exec(pattern);
            regexp.push({
                name: match[1].trim().toLowerCase(),
                pattern: match[2].trim().toLowerCase(),
                value: null,
                title: ''
            });
            pattern = pattern.replace(groupRX, '(' + match[2].trim() + ')');
        }

        var finalMatch = (new RegExp(pattern, "i")).exec(string);
        if (finalMatch) {
            for (var i = 0, len = regexp.length; i < len; i++) {
                if (finalMatch[(i + 1)] !== false) {
                    var mth = finalMatch[(i + 1)];
                    if (mth)
                        mth = mth.trim().toLowerCase();
                    regexp[i].value = mth;
                }
            }
        }
        else
            regexp = null;
        return regexp;
    };

    /// <summary> Processcommands. </summary>
    /// <param name="text"> The text. </param>
    /// <param name="commandgroups"> The command groups. </param>
    /// <returns> . </returns>
    function processcommands(text, commandgroups) {

        var result = {
            groupid: '',
            name: '',
            item: {
                actionid: '',
                groupid: '',
                sourceid: '',
                menuid: '',
                deviceid: '',
                itemName: '',
                itemType: '',
                shuffle: false,
                filters: [],
                sortBy: '',
                sortOrder: '',
                item: 100,
                category: '',
                usedefaultvalues: true
            },
            defaultValues: {
                sourceid: '',
                deviceid: '',
                itemName: '',
                itemType: '',
                shuffle: false,
                filters: [],
                sortBy: '',
                sortOrder: '',
                limit: 100,
                category: ''
            },
            properties: {
                movieName: null,
                devicename: null,
                songName: null,
                artistName: null,
                albumName: null,
                serieName: null,
                seasonName: null,
                pictureName: null,
                authorname: null,
            },
            command: null,
            text: text,
            userId: Dashboard.getCurrentUserId(),
            success: false
        };

        var isvalid = false;

        commandgroups.map(function (group) {
            if (isvalid)
                return;

            if (group.defaultValues && group.defaultValues.length > 0) {
                group.defaultValues.map(function (item) {

                });
            }

            if (group.items && group.items.length > 0) {

                group.items.map(function (item) {

                    var regex = NamedRegExp(item.command, text);
                    if (!regex && item.altcommand)
                        regex = NamedRegExp(item.altcommand, text)

                    if (regex && regex.length > 0) {

                        //Group data
                        if (group.groupid) result.groupid = group.groupid;
                        if (group.name) result.name = group.name;
                        if (group.defaultValues) {
                            result.defaultValues.sourceid = group.defaultValues.sourceid || result.defaultValues.sourceid;
                            result.defaultValues.deviceid = group.defaultValues.deviceid || result.defaultValues.deviceid;
                            result.defaultValues.itemName = group.defaultValues.itemName || result.defaultValues.itemName;
                            result.defaultValues.itemType = group.defaultValues.itemType || result.defaultValues.itemType;
                            result.defaultValues.shuffle = group.defaultValues.shuffle || result.defaultValues.shuffle;
                            result.defaultValues.filters = group.defaultValues.filters || result.defaultValues.filters;
                            result.defaultValues.sortBy = group.defaultValues.sortBy || result.defaultValues.sortBy;
                            result.defaultValues.sortOrder = group.defaultValues.sortOrder || result.defaultValues.sortOrder;
                            result.defaultValues.limit = group.defaultValues.limit || result.defaultValues.limit;
                            result.defaultValues.category = group.defaultValues.category || result.defaultValues.category;
                        }



                        if (group.name) result.name = group.name;

                        //Item data
                        var usegroupDefault = checkItemProperty(item.usedefaultvalues, result.item.usedefaultvalues);

                        result.item.usedefaultvalues = usegroupDefault;
                        result.item.actionid = checkItemProperty(item.actionid, result.item.actionid);
                        result.item.groupid = checkItemProperty(item.groupid, result.item.groupid);
                        result.item.menuid = checkItemProperty(item.menuid, result.item.menuid);
                        result.item.sourceid = checkItemProperty(item.sourceid, result.item.sourceid, usegroupDefault, result.defaultValues.sourceid);
                        result.item.deviceid = checkItemProperty(item.deviceid, result.item.deviceid, usegroupDefault, result.defaultValues.deviceid);
                        result.item.itemName = checkItemProperty(item.itemName, result.item.itemName, usegroupDefault, result.defaultValues.itemName);
                        result.item.itemType = checkItemProperty(item.itemType, result.item.itemType, usegroupDefault, result.defaultValues.itemType);
                        result.item.shuffle = checkItemProperty(item.shuffle, result.item.shuffle, usegroupDefault, result.defaultValues.shuffle);
                        result.item.filters = checkItemProperty(item.filters, result.item.filters, usegroupDefault, result.defaultValues.filters);
                        result.item.sortBy = checkItemProperty(item.sortBy, result.item.sortBy, usegroupDefault, result.defaultValues.sortBy);
                        result.item.sortOrder = checkItemProperty(item.sortOrder, result.item.sortOrder, usegroupDefault, result.defaultValues.sortOrder);
                        result.item.limit = checkItemProperty(item.limit, result.item.limit, usegroupDefault, result.defaultValues.limit);

                        result.command = item;

                        regex.map(function (regresult) {

                            switch (regresult.name) {
                                case 'moviename':
                                    result.properties.movieName = regresult.value;
                                    break;
                                case 'devicename':
                                    result.properties.devicename = regresult.value;
                                    break;
                                case 'songname':
                                    result.properties.songName = regresult.value;
                                    break;
                                case 'artistname':
                                    result.properties.artistName = regresult.value;
                                    break;
                                case 'albumname':
                                    result.properties.albumName = regresult.value;
                                    break;
                                case 'seriename':
                                    result.properties.serieName = regresult.value;
                                    break;
                                case 'seasonname':
                                    result.properties.seasonName = regresult.value;
                                    break;
                                case 'picturename':
                                    result.properties.pictureName = regresult.value;
                                    break;
                                case 'authorname':
                                    result.properties.authorname = regresult.value;
                                    break;
                            }

                            if (result.text)
                                result.text = result.text.replace(regresult.value, '').trim();
                        });

                        isvalid = true;
                    }

                    if (isvalid)
                        return;
                });
            }
        });

        return result;
    }

    /// <summary> Gets RegEx property. </summary>
    /// <param name="actions"> The actions. </param>
    /// <param name="property"> The property. </param>
    /// <returns> The RegEx property. </returns>
    function getRegExProperty(actions, property) {
        var idx = -1;
        idx = actions.map(function (e) { return e.name; }).indexOf(name);

        if (idx > -1)
            return actions[idx];
        else
            return null;
    }

    /// <summary> Check item property. </summary>
    /// <param name="property"> The property. </param>
    /// <param name="itemDefaultValue"> The item default value. </param>
    /// <param name="useGroupDefaultValue"> The use group default value. </param>
    /// <param name="groupDefaultValue"> The group default value. </param>
    /// <returns> . </returns>
    function checkItemProperty(property, itemDefaultValue, useGroupDefaultValue, groupDefaultValue) {
        if (property)
            return property;

        if (useGroupDefaultValue && groupDefaultValue)
            return groupDefaultValue;

        return itemDefaultValue;
    }

    return function (commandgroups, text) {

        if (commandgroups) {
            var result = processcommands(text, commandgroups);
            console.log(text);
            console.log(commandgroups);
        }

        return result;
    }
});
