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use crate::color::Color;
use crate::pointer_btn::PointerBtn;
use crate::text::Align;
use crate::utils::{de_first_json, de_last_json, last_line};
use serde::Deserialize;
use serde::Serialize;
use std::io::{Error, ErrorKind, Result};
#[derive(Clone, Deserialize, Default)]
pub struct Block {
pub full_text: String,
#[serde(default)]
pub short_text: Option<String>,
#[serde(default)]
pub color: Option<Color>,
#[serde(default)]
pub background: Option<Color>,
#[serde(default)]
pub min_width: Option<MinWidth>,
#[serde(default)]
pub align: Option<Align>,
#[serde(default)]
pub name: Option<String>,
#[serde(default)]
pub instance: Option<String>,
#[serde(default = "def_sep")]
pub separator: bool,
#[serde(default = "def_sep_width")]
pub separator_block_width: u8,
#[serde(default)]
pub markup: Option<String>,
}
fn def_sep() -> bool {
true
}
fn def_sep_width() -> u8 {
9
}
#[derive(Deserialize, Clone, PartialEq, Eq)]
#[serde(untagged)]
pub enum MinWidth {
Text(String),
Pixels(u32),
}
#[derive(Serialize, Default)]
pub struct Event<'a> {
pub name: Option<&'a str>,
pub instance: Option<&'a str>,
pub button: PointerBtn,
// Not available on wayland
pub modifiers: Vec<()>,
// I see no reason to have these in the protocol, as a lot depends on font & pango markup
pub x: u8,
pub y: u8,
pub relative_x: u8,
pub relative_y: u8,
pub output_x: u8,
pub output_y: u8,
pub width: u8,
pub height: u8,
}
#[derive(Deserialize, Clone, Copy)]
#[serde(deny_unknown_fields)]
pub struct JsonHeader {
version: u8,
#[serde(default)]
#[allow(dead_code)]
stop_signal: i32,
#[serde(default)]
#[allow(dead_code)]
cont_signal: i32,
#[serde(default)]
click_events: bool,
}
pub enum Protocol {
Unknown,
PlainText {
line: Option<String>,
buf: Vec<u8>,
},
JsonNotStarted(JsonHeader),
Json {
header: JsonHeader,
blocks: Option<Vec<Block>>,
buf: Vec<u8>,
},
}
impl Protocol {
pub fn process_new_bytes(&mut self, bytes: &[u8]) -> Result<()> {
macro_rules! invalid {
($fmt:expr $(,$t:expr)*) => {
return Err(Error::new(ErrorKind::InvalidData, format!($fmt $(,$t)*)))
};
}
match self {
Self::Unknown => {
if let Ok((Some(header), rem)) = de_first_json::<JsonHeader>(bytes) {
if header.version == 1 {
*self = Self::JsonNotStarted(header);
return self.process_new_bytes(rem);
}
}
*self = Self::PlainText {
line: None,
buf: Vec::new(),
};
return self.process_new_bytes(bytes);
}
Self::PlainText { line, buf } => {
if buf.is_empty() {
if let Some((new_line, rem)) = last_line(bytes) {
*line = Some(String::from_utf8_lossy(new_line).into());
buf.extend_from_slice(rem);
} else {
buf.extend_from_slice(bytes);
}
} else {
buf.extend_from_slice(bytes);
if let Some((new_line, rem)) = last_line(buf) {
*line = Some(String::from_utf8_lossy(new_line).into());
let used = buf.len() - rem.len();
buf.drain(..used);
}
}
}
Self::JsonNotStarted(header) => {
let mut bytes = bytes;
while bytes.first().map_or(false, |&x| x == b' ' || x == b'\n') {
bytes = &bytes[1..];
}
match bytes.first() {
Some(b'[') => {
*self = Self::Json {
header: *header,
blocks: None,
buf: Vec::new(),
};
return self.process_new_bytes(&bytes[1..]);
}
Some(other) => invalid!("invalid json: expected '[', got '{}'", *other as char),
_ => (),
}
}
Self::Json {
header: _,
blocks,
buf,
} => {
if buf.is_empty() {
match de_last_json(bytes) {
Err(e) => invalid!("invalid json: {e}"),
Ok((new_blocks, rem)) => {
if let Some(new_blocks) = new_blocks {
*blocks = Some(new_blocks);
}
buf.extend_from_slice(rem);
}
}
} else {
buf.extend_from_slice(bytes);
match de_last_json(buf) {
Err(e) => invalid!("invalid json: {e}"),
Ok((new_blocks, rem)) => {
if let Some(new_blocks) = new_blocks {
*blocks = Some(new_blocks);
}
let used = buf.len() - rem.len();
buf.drain(..used);
}
}
}
}
}
Ok(())
}
pub fn get_blocks(&mut self) -> Option<Vec<Block>> {
match self {
Self::Unknown => None,
Self::PlainText { line, .. } => Some(vec![Block {
full_text: line.take()?,
..Default::default()
}]),
Self::JsonNotStarted(_) => None,
Self::Json { blocks, .. } => blocks.take(),
}
}
pub fn supports_clicks(&self) -> bool {
match self {
Self::JsonNotStarted(h) => h.click_events,
Self::Json { header, .. } => header.click_events,
_ => false,
}
}
}
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