First version with ability to create database for new season

src/main/java/de/jeyp91/apifootball/APIFootballConnector.java

@@ -0,0 +1,170 @@
+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();
+    }
+}