use bitflags::bitflags;

/// A single terminal cell.
#[derive(Clone, Copy, Debug, Default, PartialEq, Eq)]
pub struct Cell {
    /// Unicode scalar value or special sentinel.
    pub ch: char,
    /// Foreground color.
    pub fg: u32,
    /// Background color.
    pub bg: u32,
    /// Cell flags (bold, italic, underline, etc.).
    pub flags: CellFlags,
    /// Extra data index (e.g. hyperlink id).
    pub extra: u32,
}

bitflags! {
    #[derive(Clone, Copy, Debug, Default, PartialEq, Eq, Hash)]
    pub struct CellFlags: u16 {
        const BOLD       = 0x0001;
        const ITALIC     = 0x0002;
        const UNDERLINE  = 0x0004;
        const STRIKETHROUGH = 0x0008;
        const WIDE       = 0x0010;
        const WIDE_SPACER = 0x0020;
        const COLORED    = 0x0040;
        const REVERSE    = 0x0080;
        const HIDDEN     = 0x0100;
        const BLINK      = 0x0200;
        const CURSOR     = 0x0400;
        const SELECTED   = 0x0800;
    }
}

impl Cell {
    pub fn new(ch: char) -> Self {
        Self {
            ch,
            fg: 0xFF_FFFFFF,
            bg: 0xFF_000000,
            flags: CellFlags::empty(),
            extra: 0,
        }
    }

    pub fn is_empty(&self) -> bool {
        self.ch == '\0' || self.ch == ' '
    }

    pub fn reset(&mut self) {
        *self = Self::default();
    }
}