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// Copyright (c) 2012 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 "chrome/browser/google_apis/drive_api_url_generator.h"

#include "base/string_number_conversions.h"
#include "base/stringprintf.h"
#include "chrome/common/net/url_util.h"

namespace google_apis {

namespace {

// Hard coded URLs for communication with a google drive server.
const char kDriveV2AboutUrl[] = "/drive/v2/about";
const char kDriveV2ApplistUrl[] = "/drive/v2/apps";
const char kDriveV2ChangelistUrl[] = "/drive/v2/changes";
const char kDriveV2FilelistUrl[] = "/drive/v2/files";
const char kDriveV2FileUrlFormat[] = "/drive/v2/files/%s";

}  // namespace

DriveApiUrlGenerator::DriveApiUrlGenerator(const GURL& base_url)
    : base_url_(base_url) {
  // Do nothing.
}

DriveApiUrlGenerator::~DriveApiUrlGenerator() {
  // Do nothing.
}

const char DriveApiUrlGenerator::kBaseUrlForProduction[] =
    "https://www.googleapis.com";

GURL DriveApiUrlGenerator::GetAboutUrl() const {
  return base_url_.Resolve(kDriveV2AboutUrl);
}

GURL DriveApiUrlGenerator::GetApplistUrl() const {
  return base_url_.Resolve(kDriveV2ApplistUrl);
}

GURL DriveApiUrlGenerator::GetChangelistUrl(
    const GURL& override_url, int64 start_changestamp) const {
  // Use override_url if not empty,
  // otherwise use the default url (kDriveV2Changelisturl based on base_url_).
  const GURL& url = override_url.is_empty() ?
      base_url_.Resolve(kDriveV2ChangelistUrl) :
      override_url;
  return start_changestamp ?
      chrome_common_net::AppendOrReplaceQueryParameter(
          url, "startChangeId", base::Int64ToString(start_changestamp)) :
      url;
}

GURL DriveApiUrlGenerator::GetFilelistUrl(
    const GURL& override_url, const std::string& search_string) const {
  // Use override_url if not empty,
  // otherwise use the default url (kDriveV2FilelistUrl based on base_url_).
  const GURL& url = override_url.is_empty() ?
      base_url_.Resolve(kDriveV2FilelistUrl) :
      override_url;
  return search_string.empty() ?
      url :
      chrome_common_net::AppendOrReplaceQueryParameter(
          url, "q", search_string);
}

GURL DriveApiUrlGenerator::GetFileUrl(const std::string& file_id) const {
  return base_url_.Resolve(
      base::StringPrintf(kDriveV2FileUrlFormat, file_id.c_str()));
}

}  // namespace google_apis