[libgdata] documents: Add support for uploads using Drive v2

[Debarshi Ray <debarshir src gnome org>]

commit f38a3f3e2b04d34838d4931fddad5a7d5492be76
Author: Debarshi Ray <debarshir gnome org>
Date:   Fri Jun 12 13:27:04 2015 +0200

    documents: Add support for uploads using Drive v2
    
    This is enough to upload a file to the root folder, but you can't
    select a specific location.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=684920

 gdata/services/documents/gdata-documents-entry.c   |    8 +++
 gdata/services/documents/gdata-documents-service.c |   67 ++++---------------
 2 files changed, 22 insertions(+), 53 deletions(-)
---
diff --git a/gdata/services/documents/gdata-documents-entry.c 
b/gdata/services/documents/gdata-documents-entry.c
index f107c61..e149cec 100644
--- a/gdata/services/documents/gdata-documents-entry.c
+++ b/gdata/services/documents/gdata-documents-entry.c
@@ -115,6 +115,7 @@
 static void gdata_documents_entry_access_handler_init (GDataAccessHandlerIface *iface);
 static void gdata_documents_entry_finalize (GObject *object);
 static void gdata_entry_dispose (GObject *object);
+static const gchar *get_content_type (void);
 static void get_namespaces (GDataParsable *parsable, GHashTable *namespaces);
 static void gdata_documents_entry_get_property (GObject *object, guint property_id, GValue *value, 
GParamSpec *pspec);
 static void gdata_documents_entry_set_property (GObject *object, guint property_id, const GValue *value, 
GParamSpec *pspec);
@@ -162,6 +163,7 @@ gdata_documents_entry_class_init (GDataDocumentsEntryClass *klass)
 
        parsable_class->parse_json = parse_json;
        parsable_class->post_parse_json = post_parse_json;
+       parsable_class->get_content_type = get_content_type;
        parsable_class->get_namespaces = get_namespaces;
 
        entry_class->get_entry_uri = get_entry_uri;
@@ -789,6 +791,12 @@ post_parse_json (GDataParsable *parsable, gpointer user_data, GError **error)
        return TRUE;
 }
 
+static const gchar *
+get_content_type (void)
+{
+       return "application/json";
+}
+
 static void
 get_namespaces (GDataParsable *parsable, GHashTable *namespaces)
 {
diff --git a/gdata/services/documents/gdata-documents-service.c 
b/gdata/services/documents/gdata-documents-service.c
index 1be8797..232a875 100644
--- a/gdata/services/documents/gdata-documents-service.c
+++ b/gdata/services/documents/gdata-documents-service.c
@@ -3,6 +3,7 @@
  * GData Client
  * Copyright (C) Thibault Saunier 2009 <saunierthibault gmail com>
  * Copyright (C) Philip Withnall 2010, 2014 <philip tecnocode co uk>
+ * Copyright (C) Red Hat, Inc. 2015
  *
  * GData Client is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -255,11 +256,7 @@
 #include <string.h>
 
 #include "gdata-documents-service.h"
-#include "gdata-documents-spreadsheet.h"
-#include "gdata-documents-text.h"
-#include "gdata-documents-drawing.h"
-#include "gdata-documents-pdf.h"
-#include "gdata-documents-presentation.h"
+#include "gdata-documents-utils.h"
 #include "gdata-batchable.h"
 #include "gdata-service.h"
 #include "gdata-private.h"
@@ -284,7 +281,6 @@ parse_feed (GDataService *self,
             gpointer progress_user_data,
             GError **error);
 
-static gchar *_build_v2_upload_uri (GDataDocumentsFolder *folder) G_GNUC_WARN_UNUSED_RESULT G_GNUC_MALLOC;
 static gchar *_get_upload_uri_for_query_and_folder (GDataDocumentsUploadQuery *query,
                                                     GDataDocumentsFolder *folder) G_GNUC_WARN_UNUSED_RESULT 
G_GNUC_MALLOC;
 
@@ -662,6 +658,7 @@ gdata_documents_service_upload_document (GDataDocumentsService *self, GDataDocum
 {
        GDataUploadStream *upload_stream;
        gchar *upload_uri;
+       gchar *upload_uri_prefix;
 
        g_return_val_if_fail (GDATA_IS_DOCUMENTS_SERVICE (self), NULL);
        g_return_val_if_fail (document == NULL || GDATA_IS_DOCUMENTS_DOCUMENT (document), NULL);
@@ -675,11 +672,11 @@ gdata_documents_service_upload_document (GDataDocumentsService *self, GDataDocum
                return NULL;
        }
 
-       /* HACK: Since we're using non-resumable upload, we have to use the v2 API upload URI to work around
-        * http://code.google.com/a/google.com/p/apps-api-issues/issues/detail?id=3033 */
-       upload_uri = _build_v2_upload_uri (folder);
+       upload_uri_prefix = gdata_documents_service_get_upload_uri (folder);
+       upload_uri = g_strconcat (upload_uri_prefix, "?uploadType=multipart", NULL);
        upload_stream = upload_update_document (self, document, slug, content_type, -1, SOUP_METHOD_POST, 
upload_uri, cancellable);
        g_free (upload_uri);
+       g_free (upload_uri_prefix);
 
        return upload_stream;
 }
@@ -903,7 +900,8 @@ gdata_documents_service_update_document_resumable (GDataDocumentsService *self,
 GDataDocumentsDocument *
 gdata_documents_service_finish_upload (GDataDocumentsService *self, GDataUploadStream *upload_stream, GError 
**error)
 {
-       const gchar *response_body, *term_pos;
+       const gchar *content_type;
+       const gchar *response_body;
        gssize response_length;
        GType new_document_type = G_TYPE_INVALID;
 
@@ -914,39 +912,17 @@ gdata_documents_service_finish_upload (GDataDocumentsService *self, GDataUploadS
                return NULL;
        }
 
-       /* Hackily determine the document format the server chose, and then parse the XML accordingly. The 
full parse will pick up any errors in
-        * our choice of format. */
-       #define TERM_MARKER "<category scheme='http://schemas.google.com/g/2005#kind' 
term='http://schemas.google.com/docs/2007#";
-       term_pos = g_strstr_len (response_body, response_length, TERM_MARKER);
-       if (term_pos == NULL) {
-               goto done;
-       }
-
-       term_pos += strlen (TERM_MARKER);
-
-       if (g_str_has_prefix (term_pos, "file'") == TRUE) {
-               new_document_type = GDATA_TYPE_DOCUMENTS_DOCUMENT;
-       } else if (g_str_has_prefix (term_pos, "spreadsheet'") == TRUE) {
-               new_document_type = GDATA_TYPE_DOCUMENTS_SPREADSHEET;
-       } else if (g_str_has_prefix (term_pos, "presentation'") == TRUE) {
-               new_document_type = GDATA_TYPE_DOCUMENTS_PRESENTATION;
-       } else if (g_str_has_prefix (term_pos, "document'") == TRUE) {
-               new_document_type = GDATA_TYPE_DOCUMENTS_TEXT;
-       } else if (g_str_has_prefix (term_pos, "drawing'") == TRUE) {
-               new_document_type = GDATA_TYPE_DOCUMENTS_DRAWING;
-       } else if (g_str_has_prefix (term_pos, "pdf'") == TRUE) {
-               new_document_type = GDATA_TYPE_DOCUMENTS_PDF;
-       }
+       content_type = gdata_upload_stream_get_content_type (upload_stream);
+       new_document_type = gdata_documents_utils_get_type_from_content_type (content_type);
 
-done:
        if (g_type_is_a (new_document_type, GDATA_TYPE_DOCUMENTS_DOCUMENT) == FALSE) {
                g_set_error (error, GDATA_DOCUMENTS_SERVICE_ERROR, 
GDATA_DOCUMENTS_SERVICE_ERROR_INVALID_CONTENT_TYPE,
                             _("The content type of the supplied document ('%s') could not be recognized."),
-                            gdata_upload_stream_get_content_type (upload_stream));
+                            content_type);
                return NULL;
        }
 
-       return GDATA_DOCUMENTS_DOCUMENT (gdata_parsable_new_from_xml (new_document_type, response_body, 
(gint) response_length, error));
+       return GDATA_DOCUMENTS_DOCUMENT (gdata_parsable_new_from_json (new_document_type, response_body, 
(gint) response_length, error));
 }
 
 /**
@@ -1477,22 +1453,6 @@ gdata_documents_service_remove_entry_from_folder_finish (GDataDocumentsService *
        g_assert_not_reached ();
 }
 
-/* HACK: Work around http://code.google.com/a/google.com/p/apps-api-issues/issues/detail?id=3033 by also 
using the upload URI for the v2 API. Grrr. */
-static gchar *
-_build_v2_upload_uri (GDataDocumentsFolder *folder)
-{
-       g_return_val_if_fail (folder == NULL || GDATA_IS_DOCUMENTS_FOLDER (folder), NULL);
-
-       /* If we have a folder, return the folder's upload URI */
-       if (folder != NULL) {
-               return _gdata_service_build_uri 
("%s://docs.google.com/feeds/default/private/full/%s/contents",
-                                                _gdata_service_get_scheme (), 
gdata_documents_entry_get_resource_id (GDATA_DOCUMENTS_ENTRY (folder)));
-       }
-
-       /* Otherwise return the default upload URI */
-       return g_strconcat (_gdata_service_get_scheme (), "://docs.google.com/feeds/default/private/full", 
NULL);
-}
-
 /* NOTE: query may be NULL. */
 static gchar *
 _get_upload_uri_for_query_and_folder (GDataDocumentsUploadQuery *query, GDataDocumentsFolder *folder)
@@ -1525,5 +1485,6 @@ gdata_documents_service_get_upload_uri (GDataDocumentsFolder *folder)
 {
        g_return_val_if_fail (folder == NULL || GDATA_IS_DOCUMENTS_FOLDER (folder), NULL);
 
-       return _get_upload_uri_for_query_and_folder (NULL, folder);
+       /* Upload URI: https://developers.google.com/drive/web/manage-uploads */
+       return g_strdup ("https://www.googleapis.com/upload/drive/v2/files";);
 }