# HG changeset patch
# User Raimund Renkert <rrenkert@intevation.de>
# Date 1377589627 -7200
# Node ID 835eec282baaabf740e80a7ae64e8d0a96ff331e
# Parent  891a2133cf46734e8a0dbed0550e773f72d02a16
New service for LAF export.

This service exports a single probe object identified by its id.
It is reachable via /server/rest/export/laf/$PROBEID.

diff -r 891a2133cf46 -r 835eec282baa src/main/java/de/intevation/lada/rest/LAFExportService.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/java/de/intevation/lada/rest/LAFExportService.java	Tue Aug 27 09:47:07 2013 +0200
@@ -0,0 +1,97 @@
+package de.intevation.lada.rest;
+
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+
+import javax.enterprise.context.RequestScoped;
+import javax.inject.Inject;
+import javax.inject.Named;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.Context;
+import javax.ws.rs.core.HttpHeaders;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.Response.ResponseBuilder;
+import javax.ws.rs.core.Response.Status;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import de.intevation.lada.auth.Authentication;
+import de.intevation.lada.auth.AuthenticationException;
+import de.intevation.lada.auth.AuthenticationResponse;
+import de.intevation.lada.auth.Authorization;
+import de.intevation.lada.data.exporter.Exporter;
+
+/**
+* This class produces a RESTful service to export a LAF file.
+*
+* @author <a href="mailto:rrenkert@intevation.de">Raimund Renkert</a>
+*/
+@Path("/export")
+@RequestScoped
+public class LAFExportService
+{
+    @Inject
+    @Named("ldapauth")
+    private Authentication authentication;
+
+    @Inject
+    @Named("dataauthorization")
+    private Authorization authorization;
+
+    @Inject
+    @Named("lafexporter")
+    private Exporter exporter;
+    /**
+     * Import LProbe object.
+     * See
+     * http://howtodoinjava.com/2013/05/21/jax-rs-resteasy-file-upload-httpclient-example/
+     * for more details on the implementation.
+     *
+     * @param input MulitpartFormDataInput containing the file to upload.
+     * @param header    The HTTP header containing authorization information.
+     * @return Response object.
+     */
+    @GET
+    @Path("/laf/{id}")
+    @Produces("text/plain")
+    public Response download(
+        @PathParam("id") String probeId,
+        @Context HttpHeaders header
+    ) {
+        try {
+            String fileName = "export.laf";
+            AuthenticationResponse auth = authentication.authorizedGroups(header);
+            if (!authentication.isAuthorizedUser(header)) {
+                ResponseBuilder response = Response.status(Status.FORBIDDEN);
+                return response.build();
+            }
+            if (!authentication.hasAccess(header, probeId) ||
+                !authorization.isReadOnly(probeId)) {
+                ResponseBuilder response = Response.status(Status.FORBIDDEN);
+                return response.build();
+            }
+            InputStream exported = exporter.export(probeId, auth);
+            ResponseBuilder response = Response.ok((Object)exported);
+            response.header(
+                "Content-Disposition",
+                "attachment; filename=\"" + fileName + "\"");
+            return response.build();
+
+        }
+        catch(AuthenticationException ae) {
+            ResponseBuilder response = Response.status(Status.FORBIDDEN);
+            return response.build();
+        }
+    }
+}