node_wechat/test.js at master · peterwanghot/node_wechat · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
// let cheerio = require("cheerio");
let http = require("http");
let https = require("https");
let xpath = require('xpath');
let dom = require('xmldom').DOMParser;

function spiderHttpsMarket(coin_name, coin_symbol, base_market, coin_symbol_convert, callback) {
    let url = "https://coinmarketcap.com/zh/currencies/" + coin_name + "/#markets"
    https.get(url, function (res) {
        let data = "";
        res.on('data', function (chunk) {
            data += chunk;
        });
        res.on("end", function () {
            callback(data);
        });
    }).on("error", function () {
        callback(null);
    });
}

let coin_name = "eos";
let coin_symbol = "EOS";
let coin_symbol_convert = "ETH";
let base_market = "";
let market_output = "";

function convert_sort_desc(x, y) {
    return (x.convert_count < y.convert_count) ? 1 : -1
}

spiderHttpsMarket(coin_name, coin_symbol, base_market, coin_symbol_convert, function (data) {
        if (data) {
            // console.log(data);
            let doc = new dom().parseFromString(data);
            let nodes_market_name = xpath.select("//*[@id=\"markets-table\"]/tbody/tr/td[2]/a/text()", doc);
            let nodes_btc_price = xpath.select("//*[@id=\"markets-table\"]/tbody/tr/td[5]/span/@data-btc", doc);
            let nodes_usd_price = xpath.select("//*[@id=\"markets-table\"]/tbody/tr/td[5]/span/@data-usd", doc);
            let nodes_market_volume = xpath.select("//*[@id=\"markets-table\"]/tbody/tr/td[4]/span/@data-usd", doc);
            let nodes_pair = xpath.select("//*[@id=\"markets-table\"]/tbody/tr/td[3]/a/text()", doc);

            let curSpecConvertVal = -1;
            let curSpecMarketName = "";


            if (nodes_market_name) {
                let array_markets = [];
                let count = nodes_market_name.length;
                if (count > 0) {
                    let convert_count = 0;

                    for (let i = 0; i < count; i++) {
                        convert_count = Math.floor(1 / parseFloat(nodes_btc_price[i].nodeValue));

                        if (base_market.toUpperCase() === nodes_market_name[i].nodeValue.toUpperCase()) {
                            curSpecConvertVal = convert_count;
                            curSpecMarketName = nodes_market_name[i].nodeValue;
                        }

                        let market_name = nodes_market_name[i].nodeValue;
                        let pair = nodes_pair[i].nodeValue;
                        let price_btc = parseFloat(nodes_btc_price[i].nodeValue);
                        let price_usd = parseFloat(nodes_usd_price[i].nodeValue);
                        let market_volume = parseFloat(nodes_market_volume[i].nodeValue);
                        if (coin_symbol_convert.length === 0) {
                            array_markets.push({
                                name: market_name,
                                pair: pair,
                                price_btc: price_btc,
                                price_usd: price_usd,
                                convert_count: convert_count,
                                volume: market_volume
                            });
                        } else {
                            if (nodes_pair[i].nodeValue === coin_symbol + "/" + coin_symbol_convert) {
                                array_markets.push({
                                    name: market_name,
                                    pair: pair,
                                    price_btc: price_btc,
                                    price_usd: price_usd,
                                    convert_count: convert_count,
                                    volume: market_volume
                                });
                            }
                        }

                    }

                    array_markets.sort(convert_sort_desc)

                    let count_market_filter = array_markets.length;

                    let display_max_count = count > 10 ? 10 : count_market_filter;

                    market_output = "";
                    market_output = market_output + "Top" + display_max_count + " 最贵交易市场\n";
                    market_output = market_output + "市场\t[BTC/" + coin_symbol + "个数]\t交易对\tBTC价格\tUSD价格\tUSD交易量(24h)\n";

                    for (let i = 0; i < display_max_count; i++) {
                        let market = array_markets[i];
                        if (market) {
                            market_output = market_output + market.name + "\t";
                            market_output = market_output + "[" + market.convert_count + "]\t";
                            market_output = market_output + market.pair + "\t";
                            market_output = market_output + "฿" + market.price_btc + "\t";
                            market_output = market_output + "$" + market.price_usd.toLocaleString() + "\t";
                            market_output = market_output + "$" + market.volume.toLocaleString() + "\n";
                        }
                    }

                    market_output = market_output + "\nTop" + display_max_count + " 最便宜交易市场\n";
                    market_output = market_output + "市场\t[BTC/" + coin_symbol + "个数]\t交易对\tBTC价格\tUSD价格\tUSD交易量(24小时)\n";

                    for (let i = count - 1; i >= count_market_filter - display_max_count; i--) {
                        let market = array_markets[i];
                        if (market) {
                            market_output = market_output + market.name + "\t";
                            market_output = market_output + "[" + market.convert_count + "]\t";
                            market_output = market_output + market.pair + "\t";
                            market_output = market_output + "฿" + market.price_btc + "\t";
                            market_output = market_output + "$" + market.price_usd.toLocaleString() + "\t";
                            market_output = market_output + "$" + market.volume.toLocaleString() + "\n";
                        }
                    }

                    market_output = market_output + "\n最贵: " + array_markets[0].name + " [" + array_markets[0].convert_count + "]";
                    market_output = market_output + " 最便宜: " + array_markets[count_market_filter - 1].name + " [" + array_markets[count_market_filter - 1].convert_count + "]";
                    market_output = market_output + "\n套利空间: " + (array_markets[0].convert_count - array_markets[count_market_filter - 1].convert_count) + " " + coin_symbol;


                    // console.log(market_output);
                    if (base_market.length === 0) {
                        console.log(market_output);
                    }

                    if (base_market.length > 0) {
                        // console.log(nodes_market_name);
                        market_output = "";
                        market_output = market_output + "基准交易市场: " + curSpecMarketName + " [" + curSpecConvertVal + "] " + coin_symbol;
                        market_output = market_output + "\n市场\t[BTC/" + coin_symbol + "个数]\t套利空间\t交易对\n";
                        let taoli_count = 0;
                        let taoli_market_name = "";
                        let taoli_market_convert = "";
                        let taoli_count_max_market = "";

                        let count_taoli_max = 0;

                        for (let i = 0; i < count_market_filter; i++) {

                            if (base_market.toUpperCase() !== array_markets[i].name.toUpperCase()) {
                                market_name = array_markets[i].name;
                                taoli_count = array_markets[i].convert_count - curSpecConvertVal;

                                market_output = market_output + market_name + "\t";
                                market_output = market_output + "[" + array_markets[i].convert_count + "]\t";
                                market_output = market_output + taoli_count + "\t";
                                market_output = market_output + array_markets[i].pair + "\n";

                                count_taoli_max++;
                                if(count_taoli_max === 1){
                                    taoli_market_name = market_name;
                                    taoli_market_convert = array_markets[i].convert_count;
                                    taoli_count_max_market = taoli_count;
                                }

                            }
                        }

                        market_output = market_output + "\n最佳套利市场: " + taoli_market_name + " [" + taoli_count_max_market + "] " + coin_symbol;

                        console.log(market_output);
                    }
                }

            }

            // console.log("done");
        }
        else {
            console.log("parse error");
            return "搬砖数据处理出错,请稍后再试:("
        }
    }
);