From 8d7d357497e80b87f1d3be2357cb9cb2e853e582 Mon Sep 17 00:00:00 2001
From: ulrich
Date: Thu, 08 Apr 2021 15:55:18 +0000
Subject: [PATCH] Gestaltung der Buttons, Abspielliste (in Arbeit)

---
 src/de/uhilger/mediaz/api/AbstractHandler.java |  103 +++++++++++++++++++++++++++++++++++++++++----------
 1 files changed, 82 insertions(+), 21 deletions(-)

diff --git a/src/de/uhilger/mediaz/api/AbstractHandler.java b/src/de/uhilger/mediaz/api/AbstractHandler.java
index 4692d5d..55d2ece 100644
--- a/src/de/uhilger/mediaz/api/AbstractHandler.java
+++ b/src/de/uhilger/mediaz/api/AbstractHandler.java
@@ -6,36 +6,97 @@
 package de.uhilger.mediaz.api;
 
 import com.google.gson.Gson;
+import com.sun.net.httpserver.HttpExchange;
+import com.sun.net.httpserver.HttpHandler;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
 
 /**
  *
  * @author ulrich
  */
-public class AbstractHandler {
+public abstract class AbstractHandler extends JsonHelper implements HttpHandler {
   
-  protected String jsonWithEnclosingType(Object o) {
-    /*
-    StringBuilder sb = new StringBuilder();
-    sb.append("{\"");
-    sb.append(o.getClass().getSimpleName());
-    sb.append("\": ");
-    Gson gson = new Gson();
-    sb.append(gson.toJson(o));
-    sb.append("}");
-    return sb.toString();
-    */
-    return jsonWithCustomType(o, o.getClass().getSimpleName());
+  private static final Logger logger = Logger.getLogger(AbstractHandler.class.getName());
+
+  /** Name der HTTP Methode GET */
+  public static final String HTTP_GET = "GET";
+  
+  /** Name der HTTP Methode PUT */
+  public static final String HTTP_PUT = "PUT";
+  
+  /** Name der HTTP Methode POST */
+  public static final String HTTP_POST = "POST";
+  
+  /** Name der HTTP Methode DELETE */
+  public static final String HTTP_DELETE = "DELETE";
+  
+  @Override
+  public void handle(HttpExchange e) throws IOException {
+    String method = e.getRequestMethod();
+    String response = "";
+    int code = 200;
+    switch(method) {
+      case HTTP_GET:
+        String json = get(e);
+        if(json != null) {
+          response = json;
+        } else {
+          response = "nicht gefunden";
+          code = 404;
+        }
+        break;
+        
+      case HTTP_PUT:
+        response = put(e);
+        break;
+        
+      case HTTP_POST:
+        response = post(e);
+        code = 404;
+        break;
+        
+      case HTTP_DELETE:
+        boolean geloescht = delete(e);
+        if(geloescht) {
+          response = "geloescht";
+        } else {
+          response = "nicht geloescht";
+        }
+        break;
+    }
+    logger.fine(response);
+    e.sendResponseHeaders(code, response.length());
+    OutputStream os = e.getResponseBody();
+    os.write(response.getBytes());
+    os.close();        
   }
   
-  protected String jsonWithCustomType(Object o, String typeName) {
+  protected String bodyLesen(HttpExchange e) throws IOException {
+    InputStream is = e.getRequestBody();
+    BufferedReader r = new BufferedReader(new InputStreamReader(is));
     StringBuilder sb = new StringBuilder();
-    sb.append("{\"");
-    sb.append(typeName);
-    sb.append("\": ");
-    Gson gson = new Gson();
-    sb.append(gson.toJson(o));
-    sb.append("}");
-    return sb.toString();
+    String line = r.readLine();
+    while(line != null) {
+      sb.append(line);
+      line = r.readLine();
+    }
+    r.close();
+    String json = sb.toString();
+    logger.log(Level.FINE, "json: {0}", json);
+    return json;
   }
+
+  
+  protected abstract String get(HttpExchange e);
+  protected abstract String put(HttpExchange e) throws IOException;
+  protected abstract String post(HttpExchange e);
+  protected abstract boolean delete(HttpExchange e);
   
 }

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