// ============================================================================
// Developed by Kernel Team.
// http://kernel-team.com
// ============================================================================

String.prototype.trim = function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
}

// Common functions for reuse =================================================

function stub() {
}

function commonGet(id) {
    return document.getElementById(id);
}

function commonValidId(id) {
    return (id && commonGet(id));
}

function commonShow(id) {
    if (commonValidId(id)) {
        commonGet(id).style.display = 'block';
    }
}

function commonHide(id) {
    if (commonValidId(id)) {
        commonGet(id).style.display = 'none';
    }
}

function commonProcessFieldError(fieldName, errorId) {
    for (var i = 0; i < 10; i++) {
        commonHide(fieldName + '_error_' + i);
    }
    commonShow(fieldName + '_' + errorId);
    return (errorId == null);
}

function commonValidateRequired(form, fieldName, errorCode) {
    if (!form[fieldName]) {
        return true;
    }
    if (form[fieldName].value.trim().length == 0) {
        return commonProcessFieldError(fieldName, errorCode);
    } else {
        return commonProcessFieldError(fieldName, null);
    }
}

function commonValidateMinLength(form, fieldName, length, errorCode) {
    if (!form[fieldName]) {
        return true;
    }
    if (form[fieldName].value.trim().length < length) {
        return commonProcessFieldError(fieldName, errorCode);
    } else {
        return commonProcessFieldError(fieldName, null);
    }
}

function commonValidatePasswords(form, fieldName1, fieldName2, errorCode) {
    if (!form[fieldName1] || !form[fieldName2]) {
        return true;
    }
    if (form[fieldName1].value != form[fieldName2].value) {
        return commonProcessFieldError(fieldName2, errorCode);
    } else {
        return commonProcessFieldError(fieldName2, null);
    }
}

function commonValidateEmail(form, fieldName, errorCode) {
    if (!form[fieldName]) {
        return true;
    }
    if (form[fieldName].value.trim().length == 0) {
        return commonProcessFieldError(fieldName, null);
    }
    var email = /^\w[\w\-]*(\.\w[\w\-]*)*@\w[\w\-]+(\.\w[\w\-]+)*\.(a[c-gil-oq-uwz]|b[a-bd-jm-or-tvwyz]|c[acdf-ik-orsuvx-z]|d[ejkmoz]|e[ceghr-u]|f[i-kmorx]|g[abd-ilmnp-uwy]|h[kmnrtu]|i[delm-oq-t]|j[emop]|k[eg-imnprwyz]|l[a-cikr-vy]|m[acdghk-z]|n[ace-giloprtuz]|om|p[ae-hk-nrtwy]|qa|r[eouw]|s[a-eg-ort-vyz]|t[cdf-hjkm-prtvwz]|u[agkmsyz]|v[aceginu]|w[fs]|y[etu]|z[admrw]|com|edu|net|org|mil|gov|biz|pro|aero|coop|info|name|int|museum)$/;
    if (!email.test(form[fieldName].value)) {
        return commonProcessFieldError(fieldName, errorCode);
    } else {
        return commonProcessFieldError(fieldName, null);
    }
}

function commonValidateFileExt(form, fieldName, ext, errorCode) {
    if (!form[fieldName]) {
        return true;
    }
    if (form[fieldName].value.trim().length == 0) {
        return commonProcessFieldError(fieldName, null);
    }
    if (!form[fieldName].value.match(new RegExp('[.]' + ext + '$', 'gi'))) {
        return commonProcessFieldError(fieldName, errorCode);
    } else {
        return commonProcessFieldError(fieldName, null);
    }
}

// Member profile edit block functions ========================================

var memberProfileEditAdditionalVisible = false;

function memberProfileEditEnableFormProfile(params) {
    var form = params['form_id'];
    var addLink = params['additional_link_id'];
    var addBlock = params['additional_block_id'];

    if (commonValidId(addLink)) {
        commonGet(addLink).onclick = function() {
            if (memberProfileEditAdditionalVisible) {
                commonHide(addBlock);
            } else {
                commonShow(addBlock);
            }
            var st1 = (memberProfileEditAdditionalVisible ? 'collapse_link' : 'expand_link');
            var st2 = (!memberProfileEditAdditionalVisible ? 'collapse_link' : 'expand_link');
            memberProfileEditAdditionalVisible = !memberProfileEditAdditionalVisible;
            if (this.className.indexOf(st1) >= 0) {
                this.className = this.className.replace(st1, st2);
            }
            return false;
        };
    }

    if (commonValidId(form)) {
        commonGet(form).onsubmit = function() {
            var errorField = null;
            if (!commonValidateRequired(this, 'display_name', 'error_1')) {
                errorField = (errorField ? errorField : 'display_name');
            } else if (!commonValidateMinLength(this, 'display_name', 3, 'error_2')) {
                errorField = (errorField ? errorField : 'display_name');
            }
            if (!commonValidateFileExt(this, 'avatar', 'jpg', 'error_1')) {
                errorField = (errorField ? errorField : 'avatar');
            }
            var day = this['birth_date_Day'].selectedIndex;
            var month = this['birth_date_Month'].selectedIndex;
            var year = this['birth_date_Year'].selectedIndex;
            var sum = day + month + year;
            if (sum > 0) {
                if ((day == 0) || (month == 0) || (year == 0)) {
                    commonProcessFieldError('birth_date', 'error_1');
                    errorField = (errorField ? errorField : 'birth_date_Day');
                }
            }
            if (errorField) {
                this[errorField].focus();
            }
            return !errorField;
        };
    }
}

function memberProfileEditEnableFormPassword(params) {
    var form = params['form_id'];

    if (commonValidId(form)) {
        commonGet(form).onsubmit = function() {
            var errorField = null;
            if (!commonValidateRequired(this, 'old_pass', 'error_1')) {
                errorField = (errorField ? errorField : 'old_pass');
            }
            if (!commonValidateRequired(this, 'pass', 'error_1')) {
                errorField = (errorField ? errorField : 'pass');
            } else if (!commonValidateMinLength(this, 'pass', 5, 'error_2')) {
                errorField = (errorField ? errorField : 'pass');
            }
            if (!commonValidateRequired(this, 'pass2', 'error_1')) {
                errorField = (errorField ? errorField : 'pass2');
            } else if (!commonValidatePasswords(this, 'pass', 'pass2', 'error_2')) {
                errorField = (errorField ? errorField : 'pass2');
            }
            if (errorField) {
                this[errorField].focus();
            }
            return !errorField;
        };
    }
}

function memberProfileEditEnableFormEmail(params) {
    var form = params['form_id'];

    if (commonValidId(form)) {
        commonGet(form).onsubmit = function() {
            var errorField = null;
            if (!commonValidateRequired(this, 'email', 'error_1')) {
                errorField = (errorField ? errorField : 'email');
            } else if (!commonValidateEmail(this, 'email', 'error_2')) {
                errorField = (errorField ? errorField : 'email');
            }
            if (errorField) {
                this[errorField].focus();
            }
            return !errorField;
        };
    }
}

// Member profile view functions ==============================================

var memberProfileViewAddToFriendStorage = null;
var memberProfileViewSendMessageStorage = null;

function memberProfileViewTriggerBlock(storage, hide) {
    if (storage['visible'] || hide) {
        commonHide(storage['blockId']);
    } else {
        commonShow(storage['blockId']);
    }
    var st1 = (storage['visible'] ? 'collapse_link' : 'expand_link');
    var st2 = (!storage['visible'] && !hide ? 'collapse_link' : 'expand_link');
    if (hide) {
        storage['visible'] = false;
    } else {
        storage['visible'] = !storage['visible'];
    }
    var link = commonGet(storage['linkId']);
    if (link.className.indexOf(st1) >= 0) {
        link.className = link.className.replace(st1, st2);
    }
}

function memberProfileViewEnableAddToFriend(params) {
    var atfLink = params['link_id'];
    var atfBlock = params['block_id'];
    memberProfileViewAddToFriendStorage = {visible: false, linkId: atfLink, blockId: atfBlock};

    if (commonValidId(atfLink)) {
        commonGet(atfLink).onclick = function() {
            if (memberProfileViewSendMessageStorage) {
                memberProfileViewTriggerBlock(memberProfileViewSendMessageStorage, true);
            }
            memberProfileViewTriggerBlock(memberProfileViewAddToFriendStorage, false);
            return false;
        };
    }
}

function memberProfileViewEnableSendMessage(params) {
    var form = params['form_id'];
    var smLink = params['link_id'];
    var smBlock = params['block_id'];
    memberProfileViewSendMessageStorage = {visible: false, linkId: smLink, blockId: smBlock};

    if (commonValidId(smLink)) {
        commonGet(smLink).onclick = function() {
            if (memberProfileViewAddToFriendStorage) {
                memberProfileViewTriggerBlock(memberProfileViewAddToFriendStorage, true);
            }
            memberProfileViewTriggerBlock(memberProfileViewSendMessageStorage, false);
            return false;
        };
    }

    if (commonValidId(form)) {
        commonGet(form).onsubmit = function() {
            var errorField = null;
            if (!commonValidateRequired(this, 'message', 'error_1')) {
                errorField = (errorField ? errorField : 'message');
            }
            if (errorField) {
                this[errorField].focus();
            }
            return !errorField;
        };
    }
}

function memberProfileViewEnableDeleteConfirm(params) {
    var form = params['form_id'];
    var button = params['button_id'];
    var confirmationText = params['confirmation_text'];
    if (commonValidId(form)) {
        commonGet(form).onsubmit = function() {
            if (confirmationText) {
                return confirm(confirmationText);
            }
        };
    }
    if (commonValidId(button)) {
        commonGet(button).onclick = function() {
            if (commonValidId(form)) {
                if (confirmationText && confirm(confirmationText)) {
                    commonGet(form).submit();
                }
            }
        }
    }
}

// List videos functions ======================================================

function listVideosEnableDeleteForm(params) {
    var form = params['form_id'];
    var confirmationText = params['delete_confirmation_text'];
    var noSelectedText = params['no_items_selected'];

    if (commonValidId(form)) {
        commonGet(form).onsubmit = function() {
            var selectedCount = 0;
            for (var i = 0; i < this.elements.length; i++) {
                var field = this.elements[i];
                if ((field.type == 'checkbox') && (field.checked)) {
                    selectedCount++;
                }
            }
            if (selectedCount == 0) {
                alert(noSelectedText);
                return false;
            } else if (confirmationText) {
                return confirm(confirmationText);
            }
            return true;
        };
    }
}

// List albums functions ======================================================

function listAlbumsEnableDeleteForm(params) {
    var form = params['form_id'];
    var confirmationText = params['delete_confirmation_text'];
    var noSelectedText = params['no_items_selected'];

    if (commonValidId(form)) {
        commonGet(form).onsubmit = function() {
            var selectedCount = 0;
            for (var i = 0; i < this.elements.length; i++) {
                var field = this.elements[i];
                if ((field.type == 'checkbox') && (field.checked)) {
                    selectedCount++;
                }
            }
            if (selectedCount == 0) {
                alert(noSelectedText);
                return false;
            } else if (confirmationText) {
                return confirm(confirmationText);
            }
            return true;
        };
    }
}

// List messages functions ====================================================

function listMessagesEnableFriends(params) {
    var confirmButton = params['confirm_button_id'];
    var rejectButton = params['reject_button_id'];
    var messageFrom = params['message_from_user_id'];

    if (commonValidId(confirmButton)) {
        commonGet(confirmButton).onclick = function() {
            window.location = '?action=confirm_add_to_friends&message_from_user_id=' + messageFrom;
            return false;
        };
    }
    if (commonValidId(rejectButton)) {
        commonGet(rejectButton).onclick = function() {
            window.location = '?action=reject_add_to_friends&message_from_user_id=' + messageFrom;
            return false;
        };
    }
}

function listMessagesEnableDeleteForm(params) {
    var form = params['form_id'];
    var confirmationText = params['delete_confirmation_text'];
    var noSelectedText = params['no_items_selected'];

    if (commonValidId(form)) {
        commonGet(form).onsubmit = function() {
            var selectedCount = 0;
            for (var i = 0; i < this.elements.length; i++) {
                var field = this.elements[i];
                if ((field.type == 'checkbox') && (field.checked)) {
                    selectedCount++;
                }
            }
            if (selectedCount == 0) {
                alert(noSelectedText);
                return false;
            } else if (confirmationText) {
                return confirm(confirmationText);
            }
            return true;
        };
    }
}

// Message details functions ==================================================

function messageDetailsEnableSendMessage(params) {
    var form = params['form_id'];

    if (commonValidId(form)) {
        commonGet(form).onsubmit = function() {
            var errorField = null;
            if (!commonValidateRequired(this, 'message', 'error_1')) {
                errorField = (errorField ? errorField : 'message');
            }
            if (errorField) {
                this[errorField].focus();
            }
            return !errorField;
        };
    }
}

// List members blog functions ================================================

function listMembersBlogEnableDeleteForm(params) {
    var form = params['form_id'];
    var confirmationText = params['delete_confirmation_text'];
    var noSelectedText = params['no_items_selected'];

    if (commonValidId(form)) {
        commonGet(form).onsubmit = function() {
            var selectedCount = 0;
            for (var i = 0; i < this.elements.length; i++) {
                var field = this.elements[i];
                if ((field.type == 'checkbox') && (field.checked)) {
                    selectedCount++;
                }
            }
            if (selectedCount == 0) {
                alert(noSelectedText);
                return false;
            } else if (confirmationText) {
                return confirm(confirmationText);
            }
            return true;
        };
    }
}

function listMembersBlogEnableAddEntry(params) {
    var form = params['form_id'];

    if (commonValidId(form)) {
        commonGet(form).onsubmit = function() {
            var errorField = null;
            if (!commonValidateRequired(this, 'entry', 'error_1')) {
                errorField = (errorField ? errorField : 'entry');
            }
            if (errorField) {
                this[errorField].focus();
            }
            return !errorField;
        };
    }
}

// Add to friends function ====================================================

function ktSystemAddToFriends(user_id, message, callback) {
    commonSendRequestTxt('?mode=async&action=add_to_friends&rand=' + new Date().getTime(), 'user_id=' + encodeURIComponent(user_id) + '&message=' + encodeURIComponent(message), true, function(result) {
        callback(result);
    });
}

// Member online status functions =============================================

var ktSystemRefreshOnlineStatusImage = new Image();

function ktSystemRefreshOnlineStatus() {
    ktSystemRefreshOnlineStatusImage.src = '?mode=async&action=js_online_status&rand=' + new Date().getTime();
}

ktSystemRefreshOnlineStatus();
setInterval('ktSystemRefreshOnlineStatus()', 60 * 1000);