tlw-database-tool/src/main/java/de/jeyp91/apifootball/APIFootballConnector.java

package de.jeyp91.apifootball;

import com.google.common.io.Resources;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.HttpClientBuilder;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;

/**
 *
 */
public class APIFootballConnector {

    private final String API_FOOTBALL_URL = "https://v2.api-football.com/";
    private int season;

    public APIFootballConnector(int season) {
        this.season = season;
    }

    public APIFootballMatch getMatchDataByLeagueAndMatchID(int league, int id) {

        APIFootballMatch matchWithID = null;

        ArrayList<APIFootballMatch> allMatches = getMatchesFromLeagueFromFile(league);
        for (APIFootballMatch singleMatch : allMatches) {
            if (singleMatch.getAPIFootBallMatchID() == id) {
                matchWithID = singleMatch;
                break;
            }
        }

        return matchWithID;
    }

    public ArrayList<APIFootballMatch> getMatchDataByLeagueAndMatchday(int league, int matchday) {

        ArrayList<APIFootballMatch> matchesOfMatchday = new ArrayList<>();

        ArrayList<APIFootballMatch> allMatches = getMatchesFromLeagueFromFile(league);
        for (APIFootballMatch singleMatch : allMatches) {
            if (singleMatch.getMatchday() == matchday) {
                matchesOfMatchday.add(singleMatch);
            }
        }

        return matchesOfMatchday;
    }

    private ArrayList<APIFootballMatch> getMatchesFromLeagueFromFile(int id) {
        ArrayList<APIFootballMatch> matchesList = new ArrayList<>();

        JSONObject matches = readFromFile("matches_league_" + id);
        JSONArray matchArray = (JSONArray) (((JSONObject)matches.get("api")).get("fixtures"));

        for(int i = 0; i < matchArray.size(); i++) {
            matchesList.add(new APIFootballMatch((JSONObject) matchArray.get(i), this.season));
        }

        return matchesList;
    }

    private JSONObject readFromFile(String filename) {

        JSONObject object = null;
        //JSON parser object to parse read file
        JSONParser jsonParser = new JSONParser();
        URL url = Resources.getResource((this.season + 1) + "\\API-Football\\" + filename + ".json");
        String jsonConfig = null;

        try {
            jsonConfig = Resources.toString(url, StandardCharsets.UTF_8);
            //Read JSON file
            object = (JSONObject) jsonParser.parse(jsonConfig);

        } catch (IOException | ParseException e) {
            e.printStackTrace();
        }

        return object;
    }

    private JSONArray getDataAsJSONArray(String requestUrl) {

        String rawData = getRawData(requestUrl);
        JSONParser parser = new JSONParser();
        JSONArray data = null;
        try {
            data = (JSONArray) parser.parse(rawData);
        } catch (ParseException e) {
            /* TODO */
            e.printStackTrace();
        }
        return data;
    }

    private JSONObject getDataAsJSONObject(String requestUrl) {

        String rawData = getRawData(requestUrl);
        JSONParser parser = new JSONParser();
        JSONObject data = null;
        try {
            data = (JSONObject) parser.parse(rawData);
        } catch (ParseException e) {
            /* TODO */
            e.printStackTrace();
        }
        return data;
    }

    String getRawData(String requestUrl) {

        HttpClient client = HttpClientBuilder.create().build();
        HttpGet request = new HttpGet(requestUrl);

        // add request header
        request.addHeader("Content-Type", "application/json");

        HttpResponse response = null;
        try {
            response = client.execute(request);
        } catch (ClientProtocolException e) {
            /* TODO */
            e.printStackTrace();
        } catch (IOException e) {
            /* TODO */
            e.printStackTrace();
        }


        BufferedReader rd = null;
        try {
            rd = new BufferedReader(
                    new InputStreamReader(response.getEntity().getContent())
            );
        } catch (IOException e) {
            /* TODO */
            e.printStackTrace();
        }

        StringBuilder result = new StringBuilder();
        String line = "";
        while (true) {
            try {
                line = rd.readLine();
            } catch (IOException e) {
                /* TODO */
                e.printStackTrace();
            }

            // Stop reading if last line was found.
            if (line  == null) break;

            result.append(line);
        }
        return result.toString();
    }
}