exports.news = function (req, res) {logger.info('request for /news');var info = req.body;var userId = null;var advIds = [];// 数据库处理步骤1dao.getUserIdAndAreaByImsiAndAppId(info.imsi, info.appid, function (err, rows) {if (err) {logger.error('news error');}logger.debug("news: %j", info);if (rows == null || rows.length == 0) {res.writeHead(200, {"Content-Type": "application/json", 'charset': 'utf-8'});res.end();return;}userId = rows[0].id;var areaCode = rows[0].area;// 数据库处理步骤2dao.getAdvIds(userId, info.appid, function (err, rows) {if (err) {res.writeHead(200, {"Content-Type": "application/json", 'charset': 'utf-8'});res.end();logger.error(err);return;}if (rows.length <= 0) {res.writeHead(200, {"Content-Type": "application/json", 'charset': 'utf-8'});res.end();return;}for (var index in rows) {advIds.push(rows[index].adv_id);}// 数据库处理步骤3dao.getAdv(info.adStyle, areaCode, advIds, function (err, rows) {if (err) {res.writeHead(200, {"Content-Type": "application/json", 'charset': 'utf-8'});logger.error('getAdv error: ' + err);res.end();return;}if (rows.length <= 0) {logger.debug('没有找到广告');res.writeHead(200, {"Content-Type": "application/json", 'charset': 'utf-8'});res.end();return;}var advert = rows[0];// 数据库处理步骤4dao.updateAdvPush_state(userId, info.appid, advert.id, function (err, rst) {if (err) {logger.error('update advert in tb_user_advert by advId error" id=' + advert.id + ',' + err);//more error handling actionreturn;}logger.debug('update advert push state success: advId=%d', advert.id);});res.writeHead(200, {"Content-Type": "application/json"});res.write(advert.body);res.end();});});});
};

exports.location = function (req, res) {logger.info("--location begin--");var info = req.body;var imsi = info.imsi;var appId = info.appid;var lat = info.lat;var lgt = info.lgt;logger.info("imsi:" + imsi + "appId:" + appId + "lat:" +lat + "lgt:" + lgt);var city;var area;//数据库处理步骤1getCity(lat, lgt, function (err, rst) {city = rst.city;if (!city) {logger.debug('city not exist: lgt=%s, lat=%s', lgt, lat);}logger.debug('city got: lgt=%s, lat=%s', lgt, lat);dao.emit('getCityOK');});//数据库处理步骤2dao.once('getCityOK', function () {dao.getCityCode(city, function (err, rows) {logger.debug('get into tagGetCityCode');if (err) {logger.error('getCityCode error, city=%s', city);}if (rows.length <= 0) {logger.debug('city not exist in the databse, city:%s', city);user.area = undefined;}else {area = rows[0].id;logger.debug('get City Code: id=%d', area);}dao.emit('getCityCodeOK');});});//数据库处理步骤3dao.once('getCityCodeOK', function () {dao.updateUserArea(imsi, appId, area, function(err, rst){if (err) {logger.error('update area in tb_user by imsi and app_id error" imsi=' + imsi + ','+ "app_id="+ appId + err);return;}logger.debug('update user area success: area=%s', area);})});logger.info("--location end--");res.send('');
};