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var _ = require('lodash');
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var Blockchain = require('./history');
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var Node = require('./node');
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var Collection = function Collection()
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{
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this._items = [];
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this._blockchain = new Blockchain();
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return this;
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}
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Collection.prototype.add = function(data)
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{
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var node = this.getNodeOrNew({ id : data.id }, data);
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node.setInfo(data);
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return node.getInfo();
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}
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Collection.prototype.update = function(id, stats)
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{
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var node = this.getNode({ id: id });
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if(!node)
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return false;
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var block = this._blockchain.add(stats.block, id);
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if(! block)
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return false;
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var propagationHistory = this._blockchain.getNodePropagation(id);
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stats.block.arrived = block.arrived;
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stats.block.received = block.received;
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stats.block.propagation = block.propagation;
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return node.setStats(stats, propagationHistory);
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}
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Collection.prototype.addHistory = function(id, blocks)
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{
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var node = this.getNode({ id: id });
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if(!node)
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return false;
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blocks = blocks.reverse();
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for (var i = 0; i <= blocks.length - 1; i++)
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{
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this._blockchain.add(blocks[i], id);
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};
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return this.getCharts();
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}
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Collection.prototype.updateLatency = function(id, latency)
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{
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var node = this.getNode({ id: id });
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if(!node)
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return false;
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return node.setLatency(latency);
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}
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Collection.prototype.inactive = function(id)
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{
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var node = this.getNode({ spark: id });
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if(!node)
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return false;
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node.setState(false);
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return node.getStats();
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}
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Collection.prototype.getIndex = function(search)
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{
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return _.findIndex(this._items, search);
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}
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Collection.prototype.getNode = function(search)
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{
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var index = this.getIndex(search);
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if(index >= 0)
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return this._items[index];
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return false;
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}
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Collection.prototype.getNodeByIndex = function(index)
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{
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if(this._items[index])
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return this._items[index];
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return false;
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}
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Collection.prototype.getIndexOrNew = function(search, data)
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{
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var index = this.getIndex(search);
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return (index >= 0 ? index : this._items.push(new Node(data)) - 1);
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}
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Collection.prototype.getNodeOrNew = function(search, data)
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{
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return this.getNodeByIndex(this.getIndexOrNew(search, data));
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}
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Collection.prototype.all = function()
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{
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return this._items;
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}
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Collection.prototype.blockPropagationChart = function()
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{
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return this._blockchain.getBlockPropagation();
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}
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Collection.prototype.getUncleCount = function()
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{
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return this._blockchain.getUncleCount();
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}
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Collection.prototype.getCharts = function()
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{
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return this._blockchain.getCharts();
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}
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Collection.prototype.getHistory = function()
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{
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return this._blockchain;
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}
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Collection.prototype.canNodeUpdate = function(id)
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{
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var node = this.getNode({id: id});
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if(!node)
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return false;
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if(node.canUpdate())
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{
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var diff = this._blockchain.bestBlockNumber() - node.getBlockNumber();
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return (diff <= 0);
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}
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return false;
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}
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Collection.prototype.requiresUpdate = function(id)
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{
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return ( this.canNodeUpdate(id) && this._blockchain.requiresUpdate() );
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}
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module.exports = Collection;
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