var logModel = require('../models/log').LogModel;

/**
 * 获取所有日志
 * @param params 参数对象
 * @param callback 回调函数
 */
exports.getAll = function (params, callback) {
    var page = parseInt(params.pageIndex) || 1;
    page = page > 0 ? page : 1;
    var options = {};
    options.skip = (page - 1) * params.pageSize;
    options.limit = params.pageSize;
    switch (params.sortName) {
        case 'level':
            options.sort = params.sortOrder === 'desc' ? '-level -timestamp' : 'level timestamp';
            break;
        default:
            options.sort = params.sortOrder === 'desc' ? '-timestamp' : 'timestamp';
            break;
    }
    logModel.find({}, {}, options, function (err, logs) {
        if (err) {
            return callback(err);
        }
        return callback(null, logs);
    });
};

/**
 * 获取日志数
 * @param params 参数对象
 * @param callback 回调函数
 */
exports.getAllCount = function (params, callback) {
    logModel.count(function (err, count) {
        if (err) {
            return callback(err);
        }
        return callback(null, count);
    });
};