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dao.js
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dao.js
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// var MongoClient = require('mongodb').MongoClient;
var util = require('./util');
var url = util.getURL();
// var url = 'mongodb://localhost:27017/2014';
function dao(db) {
// 返回所有比赛的比赛结果
function getAllMatches(callback) {
// 按比赛序号升序排序
db.collection('match').find().sort({no:1}).toArray(function(err, items) {
callback(err, items);
});
};
// 返回某场比赛竞猜结果
function getBetItemsByMatch(no, callback) {
db.collection('bet').find({}, {_id:0, user:1, showname:1, bet: {$slice: [no-1,1]}}).toArray(function(err, items) {
// console.log("items="+items);
if (err) {
return callback(err, items);
}
db.collection('match').find({no: no}).toArray(function(err, matches) {
callback(err, items, matches[0]);
});
});
};
// 返回某人的所有投票结果
function getVoteItemsByUser(user, callback) {
db.collection('bet').find({user: user}, {_id:0, bet:1}).nextObject(function(err, items) {
callback(err, items);
});
};
// 更新投票结果
function vote(user, score, index, callback) {
// 更新数组里的某个值
var update = {};
update['bet.' + index] = score;
db.collection('bet').update({user: user}, {$set: update}, function(err, updateno) {
console.log("更新投票结果 updateno="+updateno);
callback(err, updateno);
});
};
// 批量更新投票结果
function voteAll(user, update, callback) {
db.collection('bet').update({user: user}, {$set: update}, function(err, updateno) {
console.log("批量更新投票结果 updateno="+updateno);
callback(err, updateno);
});
};
// 1)更新比赛结果
// 2)自动计算每人的竞猜得分
function updateMatchScore(no, score, callback) {
// 1)更新比赛结果
db.collection('match').update({no: no}, {$set: {score: score}}, function(err, updateno) {
console.log("更新比赛结果"+updateno);
if (err || updateno === 0) {
return callback(err, updateno);
}
// 2)自动计算每人的竞猜得分
var collection = db.collection('bet');
getBetItemsByMatch(no, function(err, items) {
if (err) return callback(err);
if (items.length == 0)
return callback("无人投票");
var cbCheck = 0;
(function() {
items.forEach(function(item, index) {
cbCheck++;
collection.update({user: item.user}, {$inc: util.getBetResult(score, item.bet[0])}, function(err, item) {
console.log("计算每人竞猜得分:"+item);
if (err) callback(err);
if (cbCheck == items.length) {
callback("全部计算完毕");
}
});
});
})();
});
});
};
// 积分榜
function getBoard(query, callback) {
// top 10
if (query == null) {
//remove limit(10)
db.collection('bet').find({}, {_id:0, bet:0}).sort({betscore:-1}).toArray(function(err, items) {
callback(err, items);
});
}
// 圈子积分榜
else {
db.collection('bet').find(query, {_id:0, bet:0}).sort({betscore:-1}).toArray(function(err, items) {
callback(err, items);
});
}
};
// 登录
function getUserByName(user, password, callback) {
db.collection('user').find({user: user}, {_id:0}).nextObject(function(err, item) {
console.log("登录 item="+item);
callback(err, item);
});
};
// 注册
function addUser(user, callback) {
db.collection('user').insert(user, function(err, item) {
if (err) {
return callback(err);
}
console.log("添加用户 item="+item);
var bet = {
user: user.user,
showname: user.showname,
bet: new Array(64)
};
db.collection('bet').insert(bet, function(err, item) {
console.log("添加用户bet纪录 item="+item);
callback(err, item);
});
});
};
// 我的圈子:当前用户的圈子 > 所有圈子的信息
function getMyCircles(user, callback) {
db.collection('user').find({user: user}, {circle: 1}).nextObject(function(err, item) {
if (err || item.circle == null) {
return callback(err, null);
}
console.log("User Circle item="+item);
db.collection('circle').find({name: {$in: item.circle}}).toArray(function(err, items) {
callback(err, items);
})
});
};
// 圈子的所有用户
function getUsersByCircle(name, callback) {
db.collection('user').find({circle: name}, {user: 1}).toArray(function(err, users) {
callback(err, users);
});
};
// 创建圈子by name
function createCircleByName(circle, callback) {
db.collection('circle').insert(circle, function(err, item) {
if (err) {
return callback(err);
}
// 在user表中加入创建者信息
var update = {
$push: {
circle: circle.name,
circleAdmin: circle.name
}
};
db.collection('user').update({user: circle.owner}, update, function(err, item) {
console.log("user circle item = " + item);
callback(err, item);
});
});
};
// 用户加入circle
function joinCircle(user, circleName, callback) {
// TODO: 用户最多只能加入5个圈子?
db.collection('user').update({user: user}, {$push: {circle: circleName}}, function(err, item) {
callback(err, item);
});
};
// 用户退出circle
function quitCircle(user, circleName, callback) {
db.collection('user').update({user: user}, {$pull: {circle: circleName}}, function(err, item) {
callback(err, item);
});
};
// 解散circle
function discardCircle(user, circleName, callback) {
db.collection('circle').remove({owner:user, name:circleName}, function(err, item) {
if (err || item == 0) { // 只有圈子的owner才能删除此圈子
return callback(err, item);
}
// 删除 user 表中的信息
var collection = db.collection('user');
collection.update({}, {$pull: {circle: circleName}}, {w:1, multi:true}, function(err, items) {
// callback(err, items);
collection.update({user:user}, {$pull: {circleAdmin: circleName}}, function(err, items) {
callback(err, items);
});
});
});
};
function getCirclesByUser(user, callback) {
db.collection('user').find({user: user}, {circle:1}).nextObject(function(err, item) {
callback(err, item);
});
};
function getServerStatus(callback) {
var admin = db.admin();
if (process.env.VCAP_SERVICES) {
var credentials = JSON.parse(process.env.VCAP_SERVICES)['mongodb-2.2'][0].credentials;
admin.authenticate(credentials.username, credentials.password, function(err, result) {
if (err) {
return callback(err, result);
}
admin.command({serverStatus:1}, function(err, info) {
callback(err, info);
});
});
}
else {
admin.command({serverStatus:1}, function(err, info) {
callback(err, info);
});
}
};
function insertMatch(match, callback) {
db.collection('match').insert(match, function(err, item) {
callback(err, item);
});
};
function createIndex(col, index, options, callback) {
db.createIndex(col, index, options, function(err, indexname) {
callback(err, indexname);
});
};
return {
getAllMatches: getAllMatches,
getBetItemsByMatch: getBetItemsByMatch,
getVoteItemsByUser: getVoteItemsByUser,
vote: vote,
voteAll: voteAll,
updateMatchScore: updateMatchScore,
getBoard: getBoard,
getUserByName: getUserByName,
addUser: addUser,
getMyCircles: getMyCircles,
getUsersByCircle: getUsersByCircle,
createCircleByName: createCircleByName,
joinCircle: joinCircle,
quitCircle: quitCircle,
discardCircle: discardCircle,
getCirclesByUser: getCirclesByUser,
getServerStatus: getServerStatus,
insertMatch: insertMatch,
createIndex: createIndex
}
};
exports = module.exports = dao;