#pragma once
#include <QWidget>
#include <QPushButton>
#include <QLineEdit>
#include <QComboBox>
#include <QString>
#include <QByteArray>
#include <QPoint>

// SendBar sits below the Raw/Table view and the HDMI preview and lets the
// user talk BACK to the firmware over UART/TCP, for debugging:
//
//   [ Pause ]  [ ...free-text input...................... ]  [Senden] [ending v]
//
// - The left button sends a fixed, user-configurable byte sequence (right-
//   click it to change the label and the code - e.g. a single control byte
//   or a short command string). Handy for a "pause"/"step" command that's
//   sent identically every time.
// - The input line sends whatever is typed the moment Enter is pressed
//   (or the "Senden" button is clicked), with a selectable line ending
//   appended.
//
// SendBar itself never touches the serial device - it only emits
// sendRequested() with the raw bytes to write; MainWindow forwards those to
// SerialWorker::writeData().
class SendBar : public QWidget
{
    Q_OBJECT

public:
    explicit SendBar(QWidget *parent = nullptr);

    // Persisted configuration accessors, used by MainWindow::save/restoreSettings.
    QString buttonLabel() const { return m_buttonLabel; }
    QString buttonCode()  const { return m_buttonCode; }   // raw, as typed (with escapes)
    int     lineEndingIndex() const;

    void setButtonLabel(const QString &label);
    void setButtonCode(const QString &code);
    void setLineEndingIndex(int index);

    // Turns C-style escapes (\n \r \t \0 \\ and \xHH) in `text` into the
    // actual bytes they represent. Exposed as static so it can be reused/
    // unit-tested independently of the widget.
    static QByteArray unescape(const QString &text);

public slots:
    // Enables/disables the send controls - there is no point letting the
    // user try to send anything while nothing is connected.
    void setConnected(bool connected);

signals:
    // Raw bytes ready to be written to the serial/network device.
    void sendRequested(const QByteArray &data);
    // The button label/code or the line-ending choice changed - MainWindow
    // listens to this to persist it immediately, consistent with how the
    // Tag filter and Screenshot folder dialogs already behave.
    void configChanged();

private slots:
    void onPauseClicked();
    void onPauseContextMenu(const QPoint &pos);
    void onSendClicked();
    void configureButton();

private:
    void setupUi();
    void updatePauseButtonUi();
    void sendInputLine();

    QPushButton *m_pauseBtn    = nullptr;
    QLineEdit   *m_inputEdit   = nullptr;
    QPushButton *m_sendBtn     = nullptr;
    QComboBox   *m_endingCombo = nullptr;

    QString m_buttonLabel = tr("Pause");
    QString m_buttonCode  = QStringLiteral("PAUSE\\n");
};