/* Роли модели и отрисовка ChannelList: канал/PM, последнее сообщение, unread и кнопки действий. */
#pragma once

#include <QStyledItemDelegate>

enum ChannelDataRole {
    ChannelNameRole             = Qt::DisplayRole,
    ChannelIconRole             = Qt::DecorationRole,
    ChannelLastMessageRole      = Qt::UserRole + 1,
    ChannelChannelIdRole        = Qt::UserRole + 2,
    ChannelPeersOnlineRole      = Qt::UserRole + 3,  /* int: count of online peers */
    ChannelAutoConnectActiveRole = Qt::UserRole + 4, /* bool: 1 if auto-connect in progress */
    ChannelInviteBtnHoveredRole  = Qt::UserRole + 5, /* bool: 1 when mouse hovers invite button */
    ChannelInviteByLinkBtnHoveredRole = Qt::UserRole + 8, /* bool: hover for invite-by-link button */
    ChannelSettingsBtnHoveredRole  = Qt::UserRole + 9,  /* bool: hover for per-channel settings gear */
    ChannelUnreadCountRole      = Qt::UserRole + 6, /* int: unread message count, 0 if none */
    ChannelLastMsgAtRole        = Qt::UserRole + 7, /* qint64: last message timestamp for sorting */
    ChannelDmOnlineRole         = Qt::UserRole + 11, /* bool: живой BGP-путь PM */
    ChannelIsSectionRole        = Qt::UserRole + 10 /* bool: 1 = заголовок секции (не выбирается) */
};

class ChannelDelegate : public QStyledItemDelegate {
    Q_OBJECT
public:
    explicit ChannelDelegate(QObject *parent = nullptr);

    void paint(QPainter *painter, const QStyleOptionViewItem &option,
               const QModelIndex &index) const override;
    QSize sizeHint(const QStyleOptionViewItem &option,
                   const QModelIndex &index) const override;

    static constexpr int InviteBtnSize = 18;
    static constexpr int InviteBtnGap = 2;
    static QRect inviteButtonRect(const QRect &itemRect);
    static QRect inviteByLinkButtonRect(const QRect &itemRect);
    static QRect settingsButtonRect(const QRect &itemRect);
};