/*
 * Copyright (C) 2011 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "core/inspector/WorkerDebuggerAgent.h"

#include "bindings/core/v8/ScriptDebugServer.h"
#include "core/inspector/InjectedScript.h"
#include "core/inspector/WorkerInspectorController.h"
#include "core/workers/WorkerGlobalScope.h"
#include "core/workers/WorkerThread.h"
#include "wtf/MessageQueue.h"

namespace blink {

namespace {

class RunInspectorCommandsTask final : public ScriptDebugServer::Task {
public:
    explicit RunInspectorCommandsTask(WorkerThread* thread)
        : m_thread(thread) { }
    virtual ~RunInspectorCommandsTask() { }
    virtual void run() override
    {
        // Process all queued debugger commands. WorkerThread is certainly
        // alive if this task is being executed.
        m_thread->willEnterNestedLoop();
        while (MessageQueueMessageReceived == m_thread->runDebuggerTask(WorkerThread::DontWaitForMessage)) { }
        m_thread->didLeaveNestedLoop();
    }

private:
    WorkerThread* m_thread;
};

} // namespace

PassOwnPtrWillBeRawPtr<WorkerDebuggerAgent> WorkerDebuggerAgent::create(WorkerThreadDebugger* workerThreadDebugger, WorkerGlobalScope* inspectedWorkerGlobalScope, InjectedScriptManager* injectedScriptManager)
{
    return adoptPtrWillBeNoop(new WorkerDebuggerAgent(workerThreadDebugger, inspectedWorkerGlobalScope, injectedScriptManager));
}

WorkerDebuggerAgent::WorkerDebuggerAgent(WorkerThreadDebugger* workerThreadDebugger, WorkerGlobalScope* inspectedWorkerGlobalScope, InjectedScriptManager* injectedScriptManager)
    : InspectorDebuggerAgent(injectedScriptManager, workerThreadDebugger->scriptDebugServer()->isolate())
    , m_workerThreadDebugger(workerThreadDebugger)
    , m_inspectedWorkerGlobalScope(inspectedWorkerGlobalScope)
{
}

WorkerDebuggerAgent::~WorkerDebuggerAgent()
{
}

DEFINE_TRACE(WorkerDebuggerAgent)
{
    visitor->trace(m_inspectedWorkerGlobalScope);
    InspectorDebuggerAgent::trace(visitor);
}

void WorkerDebuggerAgent::interruptAndDispatchInspectorCommands()
{
    scriptDebugServer().interruptAndRun(adoptPtr(new RunInspectorCommandsTask(m_inspectedWorkerGlobalScope->thread())));
}

void WorkerDebuggerAgent::startListeningScriptDebugServer()
{
    m_workerThreadDebugger->addListener(this);
}

void WorkerDebuggerAgent::stopListeningScriptDebugServer()
{
    m_workerThreadDebugger->removeListener(this);
}

ScriptDebugServer& WorkerDebuggerAgent::scriptDebugServer()
{
    return *(m_workerThreadDebugger->scriptDebugServer());
}

InjectedScript WorkerDebuggerAgent::injectedScriptForEval(ErrorString* error, const int* executionContextId)
{
    if (!executionContextId)
        return injectedScriptManager()->injectedScriptFor(m_inspectedWorkerGlobalScope->script()->scriptState());

    InjectedScript injectedScript = injectedScriptManager()->injectedScriptForId(*executionContextId);
    if (injectedScript.isEmpty())
        *error = "Execution context with given id not found.";
    return injectedScript;
}

void WorkerDebuggerAgent::muteConsole()
{
    // We don't need to mute console for workers.
}

void WorkerDebuggerAgent::unmuteConsole()
{
    // We don't need to mute console for workers.
}

} // namespace blink
