/**

 * Razvan's code. Copyright 2008 based on Apache (share alike) see LICENSE.txt for details.

 */

package com.razie.pub.lightsoa;



import java.util.HashMap;

import java.util.Map;

import java.util.Properties;



import razie.assets.AssetKey;

import razie.assets.AssetLocation;

import razie.assets.AssetMap;

import razie.assets.Meta;

import razie.base.AttrAccess;

import razie.draw.DrawStream;

import razie.draw.Technology;



import com.razie.pub.assets.JavaAssetMgr;

import com.razie.pub.base.data.HttpUtils;

import com.razie.pub.comms.MyServerSocket;

import com.razie.pub.http.StreamConsumedReply;



/**

 * special binding for assets.

 * 

 * there is only one instance of this, registered as the service name "asset"

 * 

 * @author razvanc99

 */

public class HttpAssetSoaBinding extends HttpSoaBinding {

   Map<String, HttpSoaBinding> bindings            = new HashMap<String, HttpSoaBinding>();



   // hack: null has no methods and, in HttpSoaBinding, will default to delegating to AssetMgr

   static HttpSoaBinding       defaultAssetBinding = new HttpSoaBinding((Class<?>) null, "");



   /**

    * create a simple binding - you then have to register it with the server

    */

   public HttpAssetSoaBinding() {

      // dummy - i have no soa methods

      super(HttpAssetSoaBinding.class, "asset");



      // now should register all asset types as listeners...

   }



   /** if meta not passed in, must be annotated with SoaAsset and have the meta set */

   public void register(Class<?> c, Meta... meta) {

      String m = meta.length > 0 && meta[0] != null ? meta[0].getId().name : ((SoaAsset) c

            .getAnnotation(SoaAsset.class)).meta();

      if (!bindings.containsKey(m))

         bindings.put(m, new HttpSoaBinding(c, m));

   }



   public boolean has(String type) {

      return bindings.containsKey(type);

   }



   @Override

   public Object execServer(String actionName, String protocol, String cmdargs, Properties parms,

         MyServerSocket socket) {

      // two ways to specify an asset: /asset/TYPE/KEY/ (localassets) or /asset/razie.uri....(local

      // and remote)

      AssetKey key = null;

      if (actionName.startsWith(razie.assets.AssetKey$.MODULE$.PREFIX()))

         // url is /asset/KEY/cmd

         key = razie.assets.AssetKey$.MODULE$.fromString(HttpUtils.fromUrlEncodedString(actionName));

      else if (cmdargs.length() == 0) {

         // url is /asset/TYPE - by convention, list all of type

         listLocal (actionName, "", true, makeDrawStream(socket, protocol));

         return new StreamConsumedReply();

      } else {

         // url is /asset/TYPE/KEY/cmd

         String[] xx = cmdargs.split("/", 2);

         key = new AssetKey(actionName, HttpUtils.fromUrlEncodedString(xx[0]), null);

      }



      HttpSoaBinding binding = bindings.get(key.getType());

      if (binding == null) {

         // throw new IllegalArgumentException("ERR_HTTPSOAASSET type is not bound: " +

         // key.getType());

         // try to call a generic asset via its inventory or other injection mechanism...

         return defaultAssetBinding.execServer(actionName, protocol, cmdargs, parms, socket);

      } else

         return binding.execServer(actionName, protocol, cmdargs, parms, socket);

   }



   /** list some assets directly to the output stream */

   public static void listLocal(String ttype, String location, boolean recurse, DrawStream out) {

      AssetLocation env = razie.assets.AssetLocation$.MODULE$.mutantEnv(location);



      AssetMap movies = JavaAssetMgr.find(ttype, env, recurse);



      if (Technology.TEXT.equals(out.getTechnology())) {

         out.write(movies.toString());

      } else {

         JavaAssetMgr.pres().toDrawable(movies.jvalues(), out, null);

      }

   }





   /** invoke a lightsoa method on a given service */

   public Object invokeLocal(AssetKey key, String action, AttrAccess inparms) {

      HttpSoaBinding binding = bindings.get(key.getType());

      return binding.invoke(key, action, inparms);

   }



}