/*
 * Copyright (c) 2010-2018 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#pragma once

#include <map>
#include <string>

#include <QMap>
#include <QMenu>
#include <QPointer>
#include <QString>
#include <QTextCursor>
#include <QVBoxLayout>

#include <Swift/Controllers/UIInterfaces/ChatWindow.h>

#include <SwifTools/EmojiMapper.h>
#include <SwifTools/LastLineTracker.h>

#include <Swift/QtUI/ChatSnippet.h>
#include <Swift/QtUI/QtAffiliationEditor.h>
#include <Swift/QtUI/QtEmojisSelector.h>
#include <Swift/QtUI/QtMUCConfigurationWindow.h>
#include <Swift/QtUI/QtSwiftUtil.h>
#include <Swift/QtUI/QtTabbable.h>

class QTextEdit;
class QLineEdit;
class QComboBox;
class QLabel;
class QSplitter;
class QPushButton;
class QTimer;

namespace Swift {
    class QtChatView;
    class QtOccupantListWidget;
    class QtChatTheme;
    class TreeWidget;
    class QtTextEdit;
    class UIEventStream;
    class QtChatWindowJSBridge;
    class SettingsProvider;
    class QtSettingsProvider;

    class LabelModel : public QAbstractListModel {
        Q_OBJECT
        public:
            LabelModel(QObject* parent = nullptr) : QAbstractListModel(parent) {}

            virtual int rowCount(const QModelIndex& /*index*/) const {
                return static_cast<int>(availableLabels_.size());
            }

            virtual QVariant data(const QModelIndex& index, int role) const {
                if (!index.isValid()) {
                    return QVariant();
                }
                std::shared_ptr<SecurityLabel> label = availableLabels_[index.row()].getLabel();
                if (label && role == Qt::TextColorRole) {
                    return P2QSTRING(label->getForegroundColor());
                }
                if (label && role == Qt::TextColorRole) {
                    return P2QSTRING(label->getBackgroundColor());
                }
                if (role == Qt::DisplayRole) {
                    std::string selector = availableLabels_[index.row()].getSelector();
                    std::string displayMarking = label ? label->getDisplayMarking() : "";
                    QString labelName = selector.empty() ? displayMarking.c_str() : selector.c_str();
                    return labelName;
                }
                return QVariant();
            }

            std::vector<SecurityLabelsCatalog::Item> availableLabels_;
    };

    class QtChatWindow : public QtTabbable, public ChatWindow {
        Q_OBJECT

        public:
            QtChatWindow(const QString& contact, QtChatTheme* theme, UIEventStream* eventStream, SettingsProvider* settings, QtSettingsProvider* qtOnlySettings, const std::map<std::string, std::string>& emoticonsMap);
            virtual ~QtChatWindow();
            std::string addMessage(const ChatMessage& message, const std::string &senderName, bool senderIsSelf, std::shared_ptr<SecurityLabel> label, const std::string& avatarPath, const boost::posix_time::ptime& time);
            std::string addAction(const ChatMessage& message, const std::string &senderName, bool senderIsSelf, std::shared_ptr<SecurityLabel> label, const std::string& avatarPath, const boost::posix_time::ptime& time);

            std::string addSystemMessage(const ChatMessage& message, Direction direction);
            void addPresenceMessage(const ChatMessage& message, Direction direction);
            void addErrorMessage(const ChatMessage& message);

            void replaceMessage(const ChatMessage& message, const std::string& id, const boost::posix_time::ptime& time);
            void replaceWithAction(const ChatMessage& message, const std::string& id, const boost::posix_time::ptime& time);
            void resendMessage(const std::string& id);
            // File transfer related stuff
            std::string addFileTransfer(const std::string& senderName, const std::string& avatarPath, bool senderIsSelf, const std::string& filename, const boost::uintmax_t sizeInBytes, const std::string& description);
            void setFileTransferProgress(std::string id, const int percentageDone);
            void setFileTransferStatus(std::string id, const FileTransferState state, const std::string& msg);

            std::string addWhiteboardRequest(bool senderIsSelf);
            void setWhiteboardSessionStatus(std::string id, const ChatWindow::WhiteboardSessionState state);

            void show();
            bool isVisible() const;
            void activate();
            void setUnreadMessageCount(size_t count);
            void convertToMUC(MUCType mucType);
//            TreeWidget *getTreeWidget();
            void setAvailableSecurityLabels(const std::vector<SecurityLabelsCatalog::Item>& labels);
            void setSecurityLabelsEnabled(bool enabled);
            void setSecurityLabelsError();
            SecurityLabelsCatalog::Item getSelectedSecurityLabel();
            void setName(const std::string& name);
            void setOnline(bool online);
            QtTabbable::AlertType getWidgetAlertState();
            void setContactChatState(ChatState::ChatStateType state);
            void setRosterModel(Roster* roster);
            void setTabComplete(TabComplete* completer);
            size_t getCount();
            virtual void replaceSystemMessage(const ChatMessage& message, const std::string& id, const TimestampBehaviour timestampBehaviour);
            void replaceLastMessage(const ChatMessage& message, const TimestampBehaviour timestampBehaviour);
            void setAckState(const std::string& id, AckState state);

            // message receipts
            void setMessageReceiptState(const std::string& id, ChatWindow::ReceiptState state);

            void flash();
            QByteArray getSplitterState();
            virtual void setAvailableOccupantActions(const std::vector<OccupantAction>& actions);
            void setSubject(const std::string& subject);
            void showRoomConfigurationForm(Form::ref);
            void addMUCInvitation(const std::string& senderName, const JID& jid, const std::string& reason, const std::string& password, bool direct = true, bool isImpromptu = false, bool isContinuation = false);
            void setAffiliations(MUCOccupant::Affiliation, const std::vector<JID>&);
            void setAvailableRoomActions(const std::vector<RoomAction>& actions);
            void setBlockingState(BlockingState state);
            virtual void setCanInitiateImpromptuChats(bool supportsImpromptu);
            virtual void showBookmarkWindow(const MUCBookmark& bookmark);
            virtual void setBookmarkState(RoomBookmarkState bookmarkState);
            virtual std::string getID() const;
            virtual void setEmphasiseFocus(bool emphasise);

        public slots:
            void handleChangeSplitterState(QByteArray state);
            void handleEmojiClicked(QString emoji);
            void handleFontResized(int fontSizeSteps);
            AlertID addAlert(const std::string& alertText);
            void removeAlert(const AlertID id);
            void setCorrectionEnabled(Tristate enabled);
            void setFileTransferEnabled(Tristate enabled);

        signals:
            void geometryChanged();
            void splitterMoved();
            void fontResized(int);

        protected slots:
            void closeEvent(QCloseEvent* event);
            void resizeEvent(QResizeEvent* event);
            void moveEvent(QMoveEvent* event);

            void dragEnterEvent(QDragEnterEvent *event);
            void dropEvent(QDropEvent *event);

        protected:
            void showEvent(QShowEvent* event);

        private slots:
            void handleLogCleared();
            void returnPressed();
            void handleInputChanged();
            void handleCursorPositionChanged();
            void handleKeyPressEvent(QKeyEvent* event);
            void handleSplitterMoved(int pos, int index);
            void handleAlertButtonClicked();
            void handleActionButtonClicked();
            void handleAffiliationEditorAccepted();
            void handleCurrentLabelChanged(int);
            void handleEmojisButtonClicked();
            void handleTextInputReceivedFocus();
            void handleTextInputLostFocus();

        private:
            void updateTitleWithUnreadCount();
            void tabComplete();
            void beginCorrection();
            void cancelCorrection();
            void handleSettingChanged(const std::string& setting);

            void handleOccupantSelectionChanged(RosterItem* item);
            void handleAppendedToLog();

            static std::vector<JID> jidListFromQByteArray(const QByteArray& dataBytes);

            void resetDayChangeTimer();

            void setChatSecurityMarking(const std::string& markingValue, const std::string& markingForegroundColorValue, const std::string& markingBackgroundColorValue);
            void removeChatSecurityMarking();
            void handleFocusTimerTick();

        private:
            size_t unreadCount_;
            bool contactIsTyping_;
            LastLineTracker lastLineTracker_;
            std::string id_;
            QString contact_;
            QString lastSentMessage_;
            QTextCursor tabCompleteCursor_;
            QtChatView* messageLog_;
            QtChatTheme* theme_;
            QtTextEdit* input_;
            QWidget* midBar_;
            QBoxLayout* subjectLayout_;
            QComboBox* labelsWidget_;
            QtOccupantListWidget* treeWidget_;
            QLabel* correctingLabel_;
            boost::optional<AlertID> correctingAlert_;
            QVBoxLayout* alertLayout_;
            std::map<AlertID, QWidget*> alertWidgets_;
            AlertID nextAlertId_;
            TabComplete* completer_;
            QLineEdit* subject_;
            bool isCorrection_;
            bool inputClearing_;
            bool tabCompletion_;
            UIEventStream* eventStream_;
            bool isOnline_;
            QSplitter* logRosterSplitter_;
            Tristate correctionEnabled_;
            Tristate fileTransferEnabled_;
            QString alertStyleSheet_;
            QPointer<QtMUCConfigurationWindow> mucConfigurationWindow_;
            QPointer<QtAffiliationEditor> affiliationEditor_;
            SettingsProvider* settings_ = nullptr;
            QtSettingsProvider* qtOnlySettings_ = nullptr;
            std::vector<ChatWindow::RoomAction> availableRoomActions_;
            QPalette defaultLabelsPalette_;
            LabelModel* labelModel_;
            BlockingState blockingState_;
            bool impromptu_;
            bool isMUC_;
            bool supportsImpromptuChat_;
            RoomBookmarkState roomBookmarkState_;
            std::unique_ptr<QMenu> emojisMenu_;
            QPointer<QtEmojisSelector> emojisGrid_;
            std::map<std::string, std::string> emoticonsMap_;
            QTimer* dayChangeTimer = nullptr;
            QHBoxLayout* securityMarkingLayout_ = nullptr;
            QLabel* securityMarkingDisplay_ = nullptr;
            std::unique_ptr<QTimer> focusTimer_;
    };
}