use heapless::Vec;
use crate::encoding::variable_byte_integer::VariableByteIntegerEncoder;
use crate::packet::v5::mqtt_packet::Packet;
use crate::utils::buffer_reader::BuffReader;
use crate::utils::buffer_writer::BuffWriter;
use crate::utils::types::BufferError;
use super::packet_type::PacketType;
use super::property::Property;
pub struct PubrecPacket<'a, const MAX_PROPERTIES: usize> {
pub fixed_header: u8,
pub remain_len: u32,
pub packet_identifier: u16,
pub reason_code: u8,
pub property_len: u32,
pub properties: Vec<Property<'a>, MAX_PROPERTIES>,
}
impl<'a, const MAX_PROPERTIES: usize> PubrecPacket<'a, MAX_PROPERTIES> {}
impl<'a, const MAX_PROPERTIES: usize> Packet<'a> for PubrecPacket<'a, MAX_PROPERTIES> {
fn new() -> Self {
Self {
fixed_header: PacketType::Pubrec.into(),
remain_len: 0,
packet_identifier: 0,
reason_code: 0,
property_len: 0,
properties: Vec::<Property<'a>, MAX_PROPERTIES>::new(),
}
}
fn encode(&mut self, buffer: &mut [u8], buffer_len: usize) -> Result<usize, BufferError> {
let mut buff_writer = BuffWriter::new(buffer, buffer_len);
let mut rm_ln = self.property_len;
let property_len_enc: [u8; 4] = VariableByteIntegerEncoder::encode(self.property_len)?;
let property_len_len = VariableByteIntegerEncoder::len(property_len_enc);
rm_ln = rm_ln + property_len_len as u32 + 3;
buff_writer.write_u8(self.fixed_header)?;
buff_writer.write_variable_byte_int(rm_ln)?;
buff_writer.write_u16(self.packet_identifier)?;
buff_writer.write_u8(self.reason_code)?;
buff_writer.write_variable_byte_int(self.property_len)?;
buff_writer.write_properties::<MAX_PROPERTIES>(&self.properties)?;
Ok(buff_writer.position)
}
fn decode(&mut self, buff_reader: &mut BuffReader<'a>) -> Result<(), BufferError> {
if self.decode_fixed_header(buff_reader)? != PacketType::Pubrec {
error!("Packet you are trying to decode is not PUBREC packet!");
return Err(BufferError::PacketTypeMismatch);
}
self.packet_identifier = buff_reader.read_u16()?;
self.reason_code = buff_reader.read_u8()?;
self.decode_properties(buff_reader)
}
fn set_property_len(&mut self, value: u32) {
self.property_len = value;
}
fn get_property_len(&mut self) -> u32 {
self.property_len
}
fn push_to_properties(&mut self, property: Property<'a>) {
self.properties.push(property);
}
fn property_allowed(&mut self, property: &Property<'a>) -> bool {
property.pubrec_property()
}
fn set_fixed_header(&mut self, header: u8) {
self.fixed_header = header;
}
fn set_remaining_len(&mut self, remaining_len: u32) {
self.remain_len = remaining_len;
}
}