var settings_emoji = (function () {

var exports = {};

var meta = {
    loaded: false,
};

exports.can_add_emoji = function () {
    if (page_params.is_guest) {
        return false;
    }

    if (page_params.is_admin) {
        return true;
    }

    // for normal users, we depend on the setting
    return !page_params.realm_add_emoji_by_admins_only;
};

function can_admin_emoji(emoji) {
    if (page_params.is_admin) {
        return true;
    }
    if (emoji.author === null) {
        // If we don't have the author information then only admin is allowed to disable that emoji.
        return false;
    }
    if (!page_params.realm_add_emoji_by_admins_only && people.is_current_user(emoji.author.email)) {
        return true;
    }
    return false;
}

exports.update_custom_emoji_ui = function () {
    var rendered_tip = templates.render("emoji-settings-tip", {
        realm_add_emoji_by_admins_only: page_params.realm_add_emoji_by_admins_only,
    });
    $('#emoji-settings').find('.emoji-settings-tip-container').html(rendered_tip);
    if (page_params.realm_add_emoji_by_admins_only && !page_params.is_admin) {
        $('.admin-emoji-form').hide();
        $('#emoji-settings').removeClass('can_edit');
    } else {
        $('.admin-emoji-form').show();
        $('#emoji-settings').addClass('can_edit');
    }

    exports.populate_emoji(page_params.realm_emoji);
};

exports.reset = function () {
    meta.loaded = false;
};

exports.populate_emoji = function (emoji_data) {
    if (!meta.loaded) {
        return;
    }

    var emoji_table = $('#admin_emoji_table').expectOne();
    emoji_table.find('tr.emoji_row').remove();
    _.each(emoji_data, function (data) {
        if (data.deactivated !== true) {
            emoji_table.append(templates.render('admin_emoji_list', {
                emoji: {
                    name: data.name, source_url: data.source_url,
                    display_url: data.source_url,
                    author: data.author || '',
                    can_admin_emoji: can_admin_emoji(data),
                },
            }));
        }
    });
    loading.destroy_indicator($('#admin_page_emoji_loading_indicator'));
};

exports.set_up = function () {
    meta.loaded = true;

    loading.make_indicator($('#admin_page_emoji_loading_indicator'));

    // Populate emoji table
    exports.populate_emoji(page_params.realm_emoji);

    $('.admin_emoji_table').on('click', '.delete', function (e) {
        e.preventDefault();
        e.stopPropagation();
        var btn = $(this);

        channel.del({
            url: '/json/realm/emoji/' + encodeURIComponent(btn.attr('data-emoji-name')),
            error: function (xhr) {
                ui_report.generic_row_button_error(xhr, btn);
            },
            success: function () {
                var row = btn.parents('tr');
                row.remove();
            },
        });
    });

    var emoji_widget = emoji.build_emoji_upload_widget();

    $(".organization form.admin-emoji-form").off('submit').on('submit', function (e) {
        e.preventDefault();
        e.stopPropagation();
        var emoji_status = $('#admin-emoji-status');
        $('#admin_emoji_submit').attr('disabled', true);
        var emoji = {};
        var formData = new FormData();
        _.each($(this).serializeArray(), function (obj) {
            emoji[obj.name] = obj.value;
        });
        $.each($('#emoji_file_input')[0].files, function (i, file) {
            formData.append('file-' + i, file);
        });
        channel.post({
            url: "/json/realm/emoji/" + encodeURIComponent(emoji.name),
            data: formData,
            cache: false,
            processData: false,
            contentType: false,
            success: function () {
                $('#admin-emoji-status').hide();
                ui_report.success(i18n.t("Custom emoji added!"), emoji_status);
                $("form.admin-emoji-form input[type='text']").val("");
                $('#admin_emoji_submit').removeAttr('disabled');
                emoji_widget.clear();
            },
            error: function (xhr) {
                $('#admin-emoji-status').hide();
                var errors = JSON.parse(xhr.responseText).msg;
                xhr.responseText = JSON.stringify({msg: errors});
                ui_report.error(i18n.t("Failed"), xhr, emoji_status);
                $('#admin_emoji_submit').removeAttr('disabled');
                emoji_widget.clear();
            },
        });
    });
};

return exports;
}());

if (typeof module !== 'undefined') {
    module.exports = settings_emoji;
}
window.settings_emoji = settings_emoji;