// Copyright (c) 2013 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.

#ifndef ATOM_BROWSER_ATOM_BROWSER_CLIENT_H_
#define ATOM_BROWSER_ATOM_BROWSER_CLIENT_H_

#include <map>
#include <memory>
#include <set>
#include <string>
#include <vector>

#include "base/synchronization/lock.h"
#include "brightray/browser/browser_client.h"
#include "content/public/browser/content_browser_client.h"
#include "content/public/browser/render_process_host_observer.h"
#include "net/ssl/client_cert_identity.h"

namespace content {
class QuotaPermissionContext;
class ClientCertificateDelegate;
}  // namespace content

namespace net {
class SSLCertRequestInfo;
}

namespace atom {

class AtomResourceDispatcherHostDelegate;

class AtomBrowserClient : public brightray::BrowserClient,
                          public content::RenderProcessHostObserver {
 public:
  AtomBrowserClient();
  ~AtomBrowserClient() override;

  using Delegate = content::ContentBrowserClient;
  void set_delegate(Delegate* delegate) { delegate_ = delegate; }

  // Returns the WebContents for pending render processes.
  content::WebContents* GetWebContentsFromProcessID(int process_id);

  // Don't force renderer process to restart for once.
  static void SuppressRendererProcessRestartForOnce();

  // Custom schemes to be registered to handle service worker.
  static void SetCustomServiceWorkerSchemes(
      const std::vector<std::string>& schemes);

  std::vector<std::unique_ptr<content::NavigationThrottle>>
  CreateThrottlesForNavigation(content::NavigationHandle* handle) override;

 protected:
  // content::ContentBrowserClient:
  void RenderProcessWillLaunch(
      content::RenderProcessHost* host,
      service_manager::mojom::ServiceRequest* service_request) override;
  content::SpeechRecognitionManagerDelegate*
  CreateSpeechRecognitionManagerDelegate() override;
  void OverrideWebkitPrefs(content::RenderViewHost* render_view_host,
                           content::WebPreferences* prefs) override;
  void OverrideSiteInstanceForNavigation(
      content::RenderFrameHost* render_frame_host,
      content::BrowserContext* browser_context,
      const GURL& dest_url,
      bool has_request_started,
      content::SiteInstance* candidate_instance,
      content::SiteInstance** new_instance) override;
  void AppendExtraCommandLineSwitches(base::CommandLine* command_line,
                                      int child_process_id) override;
  void DidCreatePpapiPlugin(content::BrowserPpapiHost* browser_host) override;
  std::string GetGeolocationApiKey() override;
  content::QuotaPermissionContext* CreateQuotaPermissionContext() override;
  void AllowCertificateError(
      content::WebContents* web_contents,
      int cert_error,
      const net::SSLInfo& ssl_info,
      const GURL& request_url,
      content::ResourceType resource_type,
      bool strict_enforcement,
      bool expired_previous_decision,
      const base::Callback<void(content::CertificateRequestResultType)>&
          callback) override;
  void SelectClientCertificate(
      content::WebContents* web_contents,
      net::SSLCertRequestInfo* cert_request_info,
      net::ClientCertIdentityList client_certs,
      std::unique_ptr<content::ClientCertificateDelegate> delegate) override;
  void ResourceDispatcherHostCreated() override;
  bool CanCreateWindow(content::RenderFrameHost* opener,
                       const GURL& opener_url,
                       const GURL& opener_top_level_frame_url,
                       const GURL& source_origin,
                       content::mojom::WindowContainerType container_type,
                       const GURL& target_url,
                       const content::Referrer& referrer,
                       const std::string& frame_name,
                       WindowOpenDisposition disposition,
                       const blink::mojom::WindowFeatures& features,
                       const std::vector<std::string>& additional_features,
                       const scoped_refptr<network::ResourceRequestBody>& body,
                       bool user_gesture,
                       bool opener_suppressed,
                       bool* no_javascript_access) override;
  void GetAdditionalAllowedSchemesForFileSystem(
      std::vector<std::string>* schemes) override;
  void SiteInstanceDeleting(content::SiteInstance* site_instance) override;
  std::unique_ptr<net::ClientCertStore> CreateClientCertStore(
      content::ResourceContext* resource_context) override;
  std::unique_ptr<device::LocationProvider> OverrideSystemLocationProvider()
      override;
  network::mojom::NetworkContextPtr CreateNetworkContext(
      content::BrowserContext* browser_context,
      bool in_memory,
      const base::FilePath& relative_partition_path) override;
  void RegisterOutOfProcessServices(OutOfProcessServiceMap* services) override;
  std::unique_ptr<base::Value> GetServiceManifestOverlay(
      base::StringPiece name) override;
  net::NetLog* GetNetLog() override;

  // brightray::BrowserClient:
  brightray::BrowserMainParts* OverrideCreateBrowserMainParts(
      const content::MainFunctionParams&) override;
  void WebNotificationAllowed(
      int render_process_id,
      const base::Callback<void(bool, bool)>& callback) override;
  bool ShouldBypassCORB(int render_process_id) override;

  // content::RenderProcessHostObserver:
  void RenderProcessHostDestroyed(content::RenderProcessHost* host) override;
  void RenderProcessReady(content::RenderProcessHost* host) override;
  void RenderProcessExited(
      content::RenderProcessHost* host,
      const content::ChildProcessTerminationInfo& info) override;
  bool HandleExternalProtocol(
      const GURL& url,
      content::ResourceRequestInfo::WebContentsGetter web_contents_getter,
      int child_id,
      content::NavigationUIData* navigation_data,
      bool is_main_frame,
      ui::PageTransition page_transition,
      bool has_user_gesture) override;

 private:
  struct ProcessPreferences {
    bool sandbox = false;
    bool native_window_open = false;
    bool disable_popups = false;
    bool web_security = true;
  };

  bool ShouldCreateNewSiteInstance(content::RenderFrameHost* render_frame_host,
                                   content::BrowserContext* browser_context,
                                   content::SiteInstance* current_instance,
                                   const GURL& dest_url);
  void AddProcessPreferences(int process_id, ProcessPreferences prefs);
  void RemoveProcessPreferences(int process_id);
  bool IsProcessObserved(int process_id);
  bool IsRendererSandboxed(int process_id);
  bool RendererUsesNativeWindowOpen(int process_id);
  bool RendererDisablesPopups(int process_id);

  // pending_render_process => web contents.
  std::map<int, content::WebContents*> pending_processes_;

  std::map<int, base::ProcessId> render_process_host_pids_;

  // list of site per affinity. weak_ptr to prevent instance locking
  std::map<std::string, content::SiteInstance*> site_per_affinities;

  std::unique_ptr<AtomResourceDispatcherHostDelegate>
      resource_dispatcher_host_delegate_;

  Delegate* delegate_ = nullptr;

  base::Lock process_preferences_lock_;
  std::map<int, ProcessPreferences> process_preferences_;

  DISALLOW_COPY_AND_ASSIGN(AtomBrowserClient);
};

}  // namespace atom

#endif  // ATOM_BROWSER_ATOM_BROWSER_CLIENT_H_
