// Copyright 2015 The MemDB Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License. See the AUTHORS file
// for names of contributors.

'use strict';

var P = require('bluebird');
var util = require('util');
var should = require('should');
var env = require('../env');
var Slave = require('../../app/slave');
var logger = require('memdb-logger').getLogger('test', __filename);

describe('slave test', function(){
    beforeEach(env.flushdb);

    it('set/del', function(cb){
        var opts = env.config.slave;
        opts.shardId = 's1';
        var slave = new Slave(opts);

        var key1 = 'player$1';
        var doc1 = {name : 'rain', age : 30};
        var key2 = 'player$2';
        var doc2 = null;
        var changes = {
            'player$1' : {name : 'snow', age : undefined},
            'player$2' : {name : 'tina'},
        };

        return P.try(function(){
            return slave.start();
        })
        .then(function(){
            return slave.set(key1, doc1);
        })
        .then(function(){
            return slave.set(key2, doc2);
        })
        .then(function(){
            return slave.getMulti([key1, key2])
            .then(function(docs){
                docs[key1].should.eql(doc1);
                (docs[key2] === null).should.eql(true);
            });
        })
        .then(function(){
            return slave.setMulti(changes);
        })
        .then(function(){
            return slave.getMulti([key1, key2])
            .then(function(docs){
                docs[key1].should.eql({name : 'snow'});
                docs[key2].should.eql({name : 'tina'});
            });
        })
        .then(function(){
            return slave.del(key2);
        })
        .then(function(){
            return slave.del(key1);
        })
        .then(function(){
            return slave.getMulti([key1, key2])
            .then(function(docs){
                Object.keys(docs).length.should.eql(0);
            });
        })
        .then(function(){
            return slave.stop();
        })
        .nodeify(cb);
    });

    it('getAll/clear', function(cb){
        var opts = env.config.slave;
        opts.shardId = 's1';
        var slave = new Slave(opts);

        var key1 = 'player$1';
        var doc1 = {name : 'rain', age : 30};
        var key2 = 'player$2';
        var doc2 = null;

        return P.try(function(){
            return slave.start();
        })
        .then(function(){
            return slave.set(key1, doc1);
        })
        .then(function(){
            return slave.set(key2, doc2);
        })
        .then(function(){
            return slave.getAllKeys()
            .then(function(keys){
                keys.length.should.eql(2);
            });
        })
        .then(function(){
            return slave.clear();
        })
        .then(function(){
            return slave.getAllKeys()
            .then(function(keys){
                keys.length.should.eql(0);
            });
        })
        .nodeify(cb);
    });

    it.skip('huge data', function(cb){
        this.timeout(180 * 1000);

        var opts = env.config.slave;
        opts.shardId = 's1';
        var slave = new Slave(opts);

        var count = 200000;
        var docs = {};
        for(var i=0; i<count; i++){
            docs['key' + i] = {_id : i, key : 'value' + i};
        }

        return P.try(function(){
            return slave.start();
        })
        .then(function(){
            return slave.setMulti(docs);
        })
        .then(function(){
            return slave.getAllKeys();
        })
        .then(function(keys){
            return slave.getMulti(keys);
        })
        .then(function(ret){
            Object.keys(ret).length.should.eql(count);
        })
        .nodeify(cb);
    });
});