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#include "clangipcserver.h"

#include "codecompleter.h"
#include "diagnosticset.h"
#include "projectpartsdonotexistexception.h"
#include "translationunitdoesnotexistexception.h"
#include "translationunitfilenotexitexception.h"
#include "translationunitisnullexception.h"
#include "translationunitparseerrorexception.h"
#include "translationunits.h"

#include <clangbackendipcdebugutils.h>
#include <cmbcodecompletedmessage.h>
#include <cmbcompletecodemessage.h>
#include <cmbregisterprojectsforcodecompletionmessage.h>
#include <cmbregistertranslationunitsforcodecompletionmessage.h>
#include <cmbunregisterprojectsforcodecompletionmessage.h>
#include <cmbunregistertranslationunitsforcodecompletionmessage.h>
#include <diagnosticschangedmessage.h>
#include <requestdiagnosticsmessage.h>
#include <projectpartsdonotexistmessage.h>
#include <translationunitdoesnotexistmessage.h>

#include <QCoreApplication>
#include <QDebug>

namespace ClangBackEnd {

ClangIpcServer::ClangIpcServer()
    : translationUnits(projects, unsavedFiles)
{
    translationUnits.setSendChangeDiagnosticsCallback([this] (const DiagnosticsChangedMessage &message)
                                                      {
                                                          client()->diagnosticsChanged(message);
                                                      });

    sendDiagnosticsTimer.setInterval(2000);
    sendDiagnosticsTimer.setSingleShot(true);
    QObject::connect(&sendDiagnosticsTimer,
                     &QTimer::timeout,
                     [this] () { translationUnits.sendChangedDiagnostics(); });

    QObject::connect(translationUnits.clangFileSystemWatcher(),
                     &ClangFileSystemWatcher::fileChanged,
                     [this] () { sendDiagnosticsTimer.start(); });
}

void ClangIpcServer::end()
{
    QCoreApplication::exit();
}

void ClangIpcServer::registerTranslationUnitsForCodeCompletion(const ClangBackEnd::RegisterTranslationUnitForCodeCompletionMessage &message)
{
    TIME_SCOPE_DURATION("ClangIpcServer::registerTranslationUnitsForCodeCompletion");

    try {
        const auto newerFileContainers = translationUnits.newerFileContainers(message.fileContainers());
        if (newerFileContainers.size() > 0) {
            unsavedFiles.createOrUpdate(newerFileContainers);
            translationUnits.createOrUpdate(newerFileContainers);
            sendDiagnosticsTimer.start();
        }
    } catch (const ProjectPartDoNotExistException &exception) {
        client()->projectPartsDoNotExist(ProjectPartsDoNotExistMessage(exception.projectPartIds()));
    } catch (const std::exception &exception) {
        qWarning() << "Error in ClangIpcServer::registerTranslationUnitsForCodeCompletion:" << exception.what();
    }
}

void ClangIpcServer::unregisterTranslationUnitsForCodeCompletion(const ClangBackEnd::UnregisterTranslationUnitsForCodeCompletionMessage &message)
{
    TIME_SCOPE_DURATION("ClangIpcServer::unregisterTranslationUnitsForCodeCompletion");

    try {
        unsavedFiles.remove(message.fileContainers());
        translationUnits.remove(message.fileContainers());
    } catch (const TranslationUnitDoesNotExistException &exception) {
        client()->translationUnitDoesNotExist(TranslationUnitDoesNotExistMessage(exception.fileContainer()));
    } catch (const ProjectPartDoNotExistException &exception) {
        client()->projectPartsDoNotExist(ProjectPartsDoNotExistMessage(exception.projectPartIds()));
    } catch (const std::exception &exception) {
        qWarning() << "Error in ClangIpcServer::unregisterTranslationUnitsForCodeCompletion:" << exception.what();
    }
}

void ClangIpcServer::registerProjectPartsForCodeCompletion(const RegisterProjectPartsForCodeCompletionMessage &message)
{
    TIME_SCOPE_DURATION("ClangIpcServer::registerProjectPartsForCodeCompletion");

    try {
        projects.createOrUpdate(message.projectContainers());
    } catch (const std::exception &exception) {
        qWarning() << "Error in ClangIpcServer::registerProjectPartsForCodeCompletion:" << exception.what();
    }
}

void ClangIpcServer::unregisterProjectPartsForCodeCompletion(const UnregisterProjectPartsForCodeCompletionMessage &message)
{
    TIME_SCOPE_DURATION("ClangIpcServer::unregisterProjectPartsForCodeCompletion");

    try {
        projects.remove(message.projectPartIds());
    } catch (const ProjectPartDoNotExistException &exception) {
        client()->projectPartsDoNotExist(ProjectPartsDoNotExistMessage(exception.projectPartIds()));
    } catch (const std::exception &exception) {
        qWarning() << "Error in ClangIpcServer::unregisterProjectPartsForCodeCompletion:" << exception.what();
    }
}

void ClangIpcServer::completeCode(const ClangBackEnd::CompleteCodeMessage &message)
{
    TIME_SCOPE_DURATION("ClangIpcServer::completeCode");

    try {
        CodeCompleter codeCompleter(translationUnits.translationUnit(message.filePath(), message.projectPartId()));

        const auto codeCompletions = codeCompleter.complete(message.line(), message.column());

        client()->codeCompleted(CodeCompletedMessage(codeCompletions, message.ticketNumber()));
    } catch (const TranslationUnitDoesNotExistException &exception) {
        client()->translationUnitDoesNotExist(TranslationUnitDoesNotExistMessage(exception.fileContainer()));
    } catch (const ProjectPartDoNotExistException &exception) {
        client()->projectPartsDoNotExist(ProjectPartsDoNotExistMessage(exception.projectPartIds()));
    }  catch (const std::exception &exception) {
        qWarning() << "Error in ClangIpcServer::completeCode:" << exception.what();
    }
}

void ClangIpcServer::requestDiagnostics(const RequestDiagnosticsMessage &message)
{
    TIME_SCOPE_DURATION("ClangIpcServer::requestDiagnostics");

    try {
        auto translationUnit = translationUnits.translationUnit(message.file().filePath(),
                                                                message.file().projectPartId());

        client()->diagnosticsChanged(DiagnosticsChangedMessage(translationUnit.fileContainer(),
                                                               translationUnit.diagnostics().toDiagnosticContainers()));
    } catch (const TranslationUnitDoesNotExistException &exception) {
        client()->translationUnitDoesNotExist(TranslationUnitDoesNotExistMessage(exception.fileContainer()));
    } catch (const ProjectPartDoNotExistException &exception) {
        client()->projectPartsDoNotExist(ProjectPartsDoNotExistMessage(exception.projectPartIds()));
    }  catch (const std::exception &exception) {
        qWarning() << "Error in ClangIpcServer::requestDiagnostics:" << exception.what();
    }
}

}