[GCM] Adding status to AccountMapping structure

google_apis/gcm/engine/account_mapping.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "google_apis/gcm/engine/account_mapping.h"
+
+#include "base/strings/string_number_conversions.h"
+#include "base/strings/string_util.h"
+
+namespace gcm {
+
+namespace {
+
+const char kSeparator[] = "&";
+uint32 kEmailIndex = 0;
+uint32 kMappingChangeTimestampIndex = 1;
+uint32 kMessageTypeIndex = 2;
+uint32 kMessageIdIndex = 3;
+uint32 kSizeWithNoMessage = kMessageTypeIndex + 1;
+uint32 kSizeWithMessage = kMessageIdIndex + 1;
+
+const char kMessageTypeNoneString[] = "none";
+const char kMessageTypeAddString[] = "add";
+const char kMessageTypeRemoveString[] = "remove";
+
+std::string MessageTypeToString(AccountMapping::MessageType type) {
+  switch (type) {
+    case AccountMapping::MSG_NONE:
+      return kMessageTypeNoneString;
+    case AccountMapping::MSG_ADD:
+      return kMessageTypeAddString;
+    case AccountMapping::MSG_REMOVE:
+      return kMessageTypeRemoveString;
+    default:
+      NOTREACHED();
+  }
+  return std::string();
+}
+
+bool StringToMessageType(const std::string& type_str,
+                         AccountMapping::MessageType* type) {
+  if (type_str.compare(kMessageTypeAddString) == 0)
+    *type = AccountMapping::MSG_ADD;
+  else if (type_str.compare(kMessageTypeRemoveString) == 0)
+    *type = AccountMapping::MSG_REMOVE;
+  else if (type_str.compare(kMessageTypeNoneString) == 0)
+    *type = AccountMapping::MSG_NONE;
+  else
+    return false;
+
+  return true;
+}
+
+}  // namespace
+
+AccountMapping::AccountMapping() {
+}
+
+AccountMapping::~AccountMapping() {
+}
+
+std::string AccountMapping::SerializeAsString() const {
+  std::string value;
+  value.append(email);
+  value.append(kSeparator);
+  value.append(base::Int64ToString(status_change_timestamp.ToInternalValue()));
+  value.append(kSeparator);
+  value.append(MessageTypeToString(last_message_type));
+  if (last_message_type != MSG_NONE) {
+    value.append(kSeparator);
+    value.append(last_message_id);
+  }
+
+  return value;
+}
+
+bool AccountMapping::ParseFromString(const std::string& value) {
+  std::vector<std::string> values;
+  Tokenize(value, kSeparator, &values);
+  if (values.size() != kSizeWithNoMessage &&
+      values.size() != kSizeWithMessage) {
+    return false;
+  }
+
+  if (values[kEmailIndex].empty() ||
+      values[kMappingChangeTimestampIndex].empty() ||
+      values[kMessageTypeIndex].empty()) {
+    return false;
+  }
+
+  if (values.size() == kSizeWithMessage && values[kMessageIdIndex].empty()) {
+    return false;
+  }
+
+  MessageType message_type;
+  if (!StringToMessageType(values[kMessageTypeIndex], &message_type))
+    return false;
+
+  if ((message_type == MSG_NONE && values.size() == kSizeWithMessage) ||
+      (message_type != MSG_NONE && values.size() != kSizeWithMessage)) {
+    return false;
+  }
+
+  last_message_type = message_type;
+
+  int64 status_change_ts_internal = 0LL;
+  if (!base::StringToInt64(values[kMappingChangeTimestampIndex],
+                           &status_change_ts_internal)) {
+    return false;
+  }
+
+  if (status_change_ts_internal == 0LL)
+    status = ADDING;
+  else if (last_message_type == MSG_REMOVE)
+    status = REMOVING;
+  else
+    status = MAPPED;
+
+  if (values.size() == kSizeWithMessage)
+    last_message_id = values[kMessageIdIndex];
+  else
+    last_message_id.clear();
+
+  email = values[kEmailIndex];
+  status_change_timestamp =
+      base::Time::FromInternalValue(status_change_ts_internal);
+  access_token.clear();
+
+  return true;
+}
+
+}  // namespace gcm