package de.jeyp91;

import com.amazonaws.AmazonServiceException;
import com.amazonaws.SdkClientException;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.services.s3.model.S3Object;
import com.amazonaws.services.s3.model.S3ObjectInputStream;
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;

public class S3Provider {
    private static final Regions AWS_DEFAULT_REGION = Regions.EU_CENTRAL_1;
    private static final String BUCKET_NAME = "tlw-database-tool-api-football-data";

    private void writeToS3(String filename, String content) {
        final AmazonS3 s3 = AmazonS3ClientBuilder
                .standard()
                .withRegion(AWS_DEFAULT_REGION)
                .build();
        try {
            s3.putObject(BUCKET_NAME, filename, content);
        } catch (AmazonServiceException e) {
            System.err.println(e.getErrorMessage());
        }
    }

    public void writeFixturesToS3(int league, String content) {
        writeToS3("fixtures/" + league + ".json", content);
    }

    public void writeRoundsToS3(int league, String content) {
        writeToS3("rounds/" + league + ".json", content);
    }

    private String getFileFromS3(String filename) {
        final AmazonS3 s3 = AmazonS3ClientBuilder
                .standard()
                .withRegion(AWS_DEFAULT_REGION)
                .build();
        StringBuilder builder = new StringBuilder();
        try {
            S3Object o = s3.getObject(BUCKET_NAME, filename);
            S3ObjectInputStream s3is = o.getObjectContent();
            BufferedReader reader = new BufferedReader(new InputStreamReader(s3is));
            String line;
            while ((line = reader.readLine()) != null) {
                builder.append(line);
            }
        } catch (SdkClientException | IOException e) {
            e.printStackTrace();
        }
        return builder.toString();
    }

    String getFixturesStringFromS3(int league) {
        return getFileFromS3("fixtures/" + league + ".json");
    }

    public JSONObject getFixturesJSONFromS3(int league) {
        String fixturesString = getFixturesStringFromS3(league);
        JSONParser parser = new JSONParser();
        JSONObject jsonObject = null;
        try {
            jsonObject = (JSONObject) parser.parse(fixturesString);
        } catch (ParseException e) {
            /* TODO */
            e.printStackTrace();
        }
        return jsonObject;
    }

    private String getRoundsStringFromS3(int league) {
        return getFileFromS3("rounds/" + league + ".json");
    }

    public JSONObject getRoundsJSONFromS3(int league) {
        String fixturesString = getRoundsStringFromS3(league);
        JSONParser parser = new JSONParser();
        JSONObject jsonObject = null;
        try {
            jsonObject = (JSONObject) parser.parse(fixturesString);
        } catch (ParseException e) {
            /* TODO */
            e.printStackTrace();
        }
        return jsonObject;
    }
}