// Copyright (c) 2011 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 "net/proxy/mock_proxy_resolver.h"

#include "base/logging.h"
#include "base/message_loop/message_loop.h"

namespace net {

MockAsyncProxyResolverBase::Request::Request(
    MockAsyncProxyResolverBase* resolver,
    const GURL& url,
    ProxyInfo* results,
    const CompletionCallback& callback)
    : resolver_(resolver),
      url_(url),
      results_(results),
      callback_(callback),
      origin_loop_(base::MessageLoop::current()) {}

    void MockAsyncProxyResolverBase::Request::CompleteNow(int rv) {
      CompletionCallback callback = callback_;

      // May delete |this|.
      resolver_->RemovePendingRequest(this);

      callback.Run(rv);
    }

MockAsyncProxyResolverBase::Request::~Request() {}

MockAsyncProxyResolverBase::SetPacScriptRequest::SetPacScriptRequest(
    MockAsyncProxyResolverBase* resolver,
    const scoped_refptr<ProxyResolverScriptData>& script_data,
    const CompletionCallback& callback)
    : resolver_(resolver),
      script_data_(script_data),
      callback_(callback),
      origin_loop_(base::MessageLoop::current()) {}

MockAsyncProxyResolverBase::SetPacScriptRequest::~SetPacScriptRequest() {}

    void MockAsyncProxyResolverBase::SetPacScriptRequest::CompleteNow(int rv) {
       CompletionCallback callback = callback_;

      // Will delete |this|.
      resolver_->RemovePendingSetPacScriptRequest(this);

      callback.Run(rv);
    }

MockAsyncProxyResolverBase::~MockAsyncProxyResolverBase() {}

int MockAsyncProxyResolverBase::GetProxyForURL(
    const GURL& url, ProxyInfo* results, const CompletionCallback& callback,
    RequestHandle* request_handle, const BoundNetLog& /*net_log*/) {
  scoped_refptr<Request> request = new Request(this, url, results, callback);
  pending_requests_.push_back(request);

  if (request_handle)
    *request_handle = reinterpret_cast<RequestHandle>(request.get());

  // Test code completes the request by calling request->CompleteNow().
  return ERR_IO_PENDING;
}

void MockAsyncProxyResolverBase::CancelRequest(RequestHandle request_handle) {
  scoped_refptr<Request> request = reinterpret_cast<Request*>(request_handle);
  cancelled_requests_.push_back(request);
  RemovePendingRequest(request.get());
}

LoadState MockAsyncProxyResolverBase::GetLoadState(
    RequestHandle request_handle) const {
  return LOAD_STATE_RESOLVING_PROXY_FOR_URL;
}

int MockAsyncProxyResolverBase::SetPacScript(
    const scoped_refptr<ProxyResolverScriptData>& script_data,
    const CompletionCallback& callback) {
  DCHECK(!pending_set_pac_script_request_.get());
  pending_set_pac_script_request_.reset(
      new SetPacScriptRequest(this, script_data, callback));
  // Finished when user calls SetPacScriptRequest::CompleteNow().
  return ERR_IO_PENDING;
}

void MockAsyncProxyResolverBase::CancelSetPacScript() {
  // Do nothing (caller was responsible for completing the request).
}

MockAsyncProxyResolverBase::SetPacScriptRequest*
MockAsyncProxyResolverBase::pending_set_pac_script_request() const {
  return pending_set_pac_script_request_.get();
}

void MockAsyncProxyResolverBase::RemovePendingRequest(Request* request) {
  RequestsList::iterator it = std::find(
      pending_requests_.begin(), pending_requests_.end(), request);
  DCHECK(it != pending_requests_.end());
  pending_requests_.erase(it);
}

void MockAsyncProxyResolverBase::RemovePendingSetPacScriptRequest(
    SetPacScriptRequest* request) {
  DCHECK_EQ(request, pending_set_pac_script_request());
  pending_set_pac_script_request_.reset();
}

MockAsyncProxyResolverBase::MockAsyncProxyResolverBase(bool expects_pac_bytes)
    : ProxyResolver(expects_pac_bytes) {}

}  // namespace net