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Merge pull request #26 from fedy97/feature/add-coinmarketcap-data-pro…
…vider feat: add coinmarketcap data provider
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src/main/java/org/bot/providers/CoinMarketCapProvider.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| package org.bot.providers; | ||
|
|
||
| import lombok.extern.slf4j.Slf4j; | ||
| import okhttp3.OkHttpClient; | ||
| import okhttp3.Request; | ||
| import okhttp3.Response; | ||
| import org.apache.http.client.HttpResponseException; | ||
| import org.bot.models.Coin; | ||
| import org.bot.models.Portfolio; | ||
| import org.bot.models.Trending; | ||
| import org.bot.utils.exceptions.CoingeckoException; | ||
| import org.bot.utils.exceptions.NotImplementedException; | ||
|
|
||
| import java.util.Arrays; | ||
| import java.util.LinkedHashMap; | ||
| import java.util.Map; | ||
|
|
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| @Slf4j | ||
| public class CoinMarketCapProvider implements DataProvider { | ||
| private static CoinMarketCapProvider instance; | ||
|
|
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| private CoinMarketCapProvider() { | ||
| // Private constructor to prevent instantiation | ||
| } | ||
|
|
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| public static CoinMarketCapProvider getInstance() { | ||
| if (instance == null) { | ||
| instance = new CoinMarketCapProvider(); | ||
| } | ||
| return instance; | ||
| } | ||
|
|
||
| @Override | ||
| public Portfolio getPortfolio(String url) { | ||
| Map<String, Coin> coins = new LinkedHashMap<>(); | ||
| Response response = null; | ||
| OkHttpClient client = new OkHttpClient(); | ||
| try { | ||
| Request request = this.buildGetRequest(url); | ||
| response = client.newCall(request).execute(); | ||
| if (!response.isSuccessful()) | ||
| throw new HttpResponseException(response.code(), response.toString()); | ||
| assert response.body() != null; | ||
| String responseBody = response.body().string(); | ||
| String[] coinsRaw = responseBody.split("class=\"sc-4984dd93-0 kKpPOn\">"); | ||
| for (int i = 1; i < coinsRaw.length; i = i + 1) { | ||
| Coin coin = this.fromRawCoin(coinsRaw[i]); | ||
| if (coin.getTicker() != null) coins.put(coin.getTicker().toUpperCase(), coin); | ||
| } | ||
| } catch (Exception e) { | ||
| log.error(Arrays.toString(e.getStackTrace())); | ||
| log.error(e.toString()); | ||
| throw new CoingeckoException(); | ||
| } finally { | ||
| if (response != null) { | ||
| response.close(); | ||
| } | ||
| } | ||
| return new Portfolio(coins); | ||
| } | ||
|
|
||
| @Override | ||
| public Trending getTrendingCoins() { | ||
| throw new NotImplementedException(); | ||
| } | ||
|
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| @Override | ||
| public Coin fromRawCoin(String raw) { | ||
| Coin coin = new Coin(); | ||
| try { | ||
| coin.setCoinName(raw.split("<")[0]); | ||
| } catch (Exception e) { | ||
| log.warn("name for token ignored: " + e); | ||
| } | ||
| try { | ||
| coin.setTicker(raw.split("click=\"true\">")[1].split("<")[0]); | ||
| } catch (Exception e) { | ||
| log.warn("ticker for token ignored: " + e); | ||
| } | ||
| try { | ||
| coin.setLink("https://coinmarketcap.com" + raw.split("<a href=\"")[1].split("\"")[0]); | ||
| } catch (Exception e) { | ||
| log.warn("link for token ignored: " + e); | ||
| } | ||
| try { | ||
| coin.setPrice(Double.parseDouble(raw.split("\"cmc-link\"><span>\\$")[1].split("<")[0].replace(",", ""))); | ||
| } catch (Exception e) { | ||
| log.warn("price for token ignored: " + e); | ||
| } | ||
| try { | ||
| coin.setChange24(raw.split("display:inline-block\"></span>")[2].split("<")[0]); | ||
| } catch (Exception e) { | ||
| log.warn("change24 for token ignored: " + e); | ||
| } | ||
| return coin; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| package org.bot.providers; | ||
|
|
||
| import okhttp3.Request; | ||
| import org.bot.models.Coin; | ||
| import org.bot.models.Portfolio; | ||
| import org.bot.models.Trending; | ||
|
|
||
| public interface DataProvider { | ||
| Portfolio getPortfolio(String url); | ||
|
|
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| Trending getTrendingCoins(); | ||
|
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| default Request buildGetRequest(String url) { | ||
| return new Request.Builder() | ||
| .url(url) | ||
| .get() | ||
| .build(); | ||
| } | ||
|
|
||
| Coin fromRawCoin(String raw); | ||
| } |
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