// SPDX-FileCopyrightText: 2021 Nheko Contributors
//
// SPDX-License-Identifier: GPL-3.0-or-later

#pragma once

#include <QObject>
#include <QTimer>
#include <deque>

#include <mtx/common.hpp>
#include <mtx/responses/messages.hpp>

class TimelineModel;
class ImagePackModel;
class QMimeData;
class QDropEvent;
class QStringList;

enum class MarkdownOverride
{
        NOT_SPECIFIED, // no override set
        ON,
        OFF,
};

class InputBar : public QObject
{
        Q_OBJECT
        Q_PROPERTY(bool uploading READ uploading NOTIFY uploadingChanged)

public:
        InputBar(TimelineModel *parent)
          : QObject()
          , room(parent)
        {
                typingRefresh_.setInterval(10'000);
                typingRefresh_.setSingleShot(true);
                typingTimeout_.setInterval(5'000);
                typingTimeout_.setSingleShot(true);
                connect(&typingRefresh_, &QTimer::timeout, this, &InputBar::startTyping);
                connect(&typingTimeout_, &QTimer::timeout, this, &InputBar::stopTyping);
        }

public slots:
        QString text() const;
        QString previousText();
        QString nextText();
        void setText(QString newText);

        void send();
        void paste(bool fromMouse);
        void insertMimeData(const QMimeData *data);
        void updateState(int selectionStart, int selectionEnd, int cursorPosition, QString text);
        void openFileSelection();
        bool uploading() const { return uploading_; }
        void message(QString body,
                     MarkdownOverride useMarkdown = MarkdownOverride::NOT_SPECIFIED,
                     bool rainbowify              = false);
        void reaction(const QString &reactedEvent, const QString &reactionKey);
        void sticker(ImagePackModel *model, int row);

private slots:
        void startTyping();
        void stopTyping();

signals:
        void insertText(QString text);
        void textChanged(QString newText);
        void uploadingChanged(bool value);

private:
        void emote(QString body, bool rainbowify);
        void notice(QString body, bool rainbowify);
        void command(QString name, QString args);
        void image(const QString &filename,
                   const std::optional<mtx::crypto::EncryptedFile> &file,
                   const QString &url,
                   const QString &mime,
                   uint64_t dsize,
                   const QSize &dimensions,
                   const QString &blurhash);
        void file(const QString &filename,
                  const std::optional<mtx::crypto::EncryptedFile> &encryptedFile,
                  const QString &url,
                  const QString &mime,
                  uint64_t dsize);
        void audio(const QString &filename,
                   const std::optional<mtx::crypto::EncryptedFile> &file,
                   const QString &url,
                   const QString &mime,
                   uint64_t dsize);
        void video(const QString &filename,
                   const std::optional<mtx::crypto::EncryptedFile> &file,
                   const QString &url,
                   const QString &mime,
                   uint64_t dsize);

        void showPreview(const QMimeData &source, QString path, const QStringList &formats);
        void setUploading(bool value)
        {
                if (value != uploading_) {
                        uploading_ = value;
                        emit uploadingChanged(value);
                }
        }

        QTimer typingRefresh_;
        QTimer typingTimeout_;
        TimelineModel *room;
        std::deque<QString> history_;
        std::size_t history_index_ = 0;
        int selectionStart = 0, selectionEnd = 0, cursorPosition = 0;
        bool uploading_ = false;
};