OC-33 OC-35, additions to ColorUtils, and JsonUtils

1 files changed, 82 insertions, 0 deletions

diff --git a/src/main/java/cc/polyfrost/oneconfig/utils/InternetUtils.java b/src/main/java/cc/polyfrost/oneconfig/utils/InternetUtils.java
index aa13c96..db83825 100644
--- a/src/main/java/cc/polyfrost/oneconfig/utils/InternetUtils.java
+++ b/src/main/java/cc/polyfrost/oneconfig/utils/InternetUtils.java
@@ -1,4 +1,86 @@
 package cc.polyfrost.oneconfig.utils;
 
+import com.google.gson.JsonElement;
+import org.apache.commons.io.IOUtils;
+
+import java.io.*;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+
 public class InternetUtils {
+    private static InputStream setupConnection(String url, String userAgent, int timeout, boolean useCaches) throws IOException {
+        HttpURLConnection connection = ((HttpURLConnection) new URL(url).openConnection());
+        connection.setRequestMethod("GET");
+        connection.setUseCaches(useCaches);
+        connection.addRequestProperty("User-Agent", userAgent);
+        connection.setReadTimeout(timeout);
+        connection.setConnectTimeout(timeout);
+        connection.setDoOutput(true);
+        return connection.getInputStream();
+    }
+
+    public static String getString(String url, String userAgent, int timeout, boolean useCaches) {
+        try (InputStreamReader input = new InputStreamReader(setupConnection(url, userAgent, timeout, useCaches), StandardCharsets.UTF_8)) {
+            return IOUtils.toString(input);
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    public static String getString(String url) {
+        return getString(url, "OneConfig/1.0.0", 5000, false);
+    }
+
+    public static JsonElement getJsonElement(String url, String userAgent, int timeout, boolean useCaches) {
+        return JsonUtils.parseString(getString(url, userAgent, timeout, useCaches));
+    }
+
+    public static JsonElement getJsonElement(String url) {
+        return getJsonElement(url, "OneConfig/1.0.0", 5000, false);
+    }
+
+
+    public static boolean downloadFile(String url, File file) {
+        return downloadFile(url, file, "OneConfig/1.0.0", 5000, false);
+    }
+
+    public static boolean downloadFile(String url, File file, String userAgent, int timeout, boolean useCaches) {
+        url = url.replace(" ", "%20");
+        try (FileOutputStream fileOut = new FileOutputStream(file); BufferedInputStream in = new BufferedInputStream(setupConnection(url, userAgent, timeout, useCaches))) {
+            IOUtils.copy(in, fileOut);
+        } catch (Exception e) {
+            e.printStackTrace();
+            return false;
+        }
+        return true;
+    }
+
+    public static String getFileChecksum(String filename) {
+        try (FileInputStream inputStream = new FileInputStream(filename)) {
+            MessageDigest digest = MessageDigest.getInstance("SHA-256");
+            byte[] bytesBuffer = new byte[1024];
+            int bytesRead;
+
+            while ((bytesRead = inputStream.read(bytesBuffer)) != -1) {
+                digest.update(bytesBuffer, 0, bytesRead);
+            }
+
+            return convertByteArrayToHexString(digest.digest());
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return "";
+    }
+
+    private static String convertByteArrayToHexString(byte[] arrayBytes) {
+        StringBuilder stringBuffer = new StringBuilder();
+        for (byte arrayByte : arrayBytes) {
+            stringBuffer.append(Integer.toString((arrayByte & 0xff) + 0x100, 16)
+                    .substring(1));
+        }
+        return stringBuffer.toString();
+    }
 }