rustdds 0.3.0

use serde::{Deserializer, de::DeserializeOwned};
use std::marker::PhantomData;

use crate::serialization::error::Error;
use crate::{
  messages::submessages::submessage_elements::serialized_payload::RepresentationIdentifier,
  serialization::error::Result,
};

use crate::dds::traits::serde_adapters::DeserializerAdapter;

pub struct PlCdrDeserializerAdapter<D> {
  phantom: PhantomData<D>,
}

const repr_ids: [RepresentationIdentifier; 4] = [
  // CDR_* are only added for random interoperability
  RepresentationIdentifier::CDR_BE,
  RepresentationIdentifier::CDR_LE,
  // PL_CDR_* are expected
  RepresentationIdentifier::PL_CDR_BE,
  RepresentationIdentifier::PL_CDR_LE,
];

impl<D> DeserializerAdapter<D> for PlCdrDeserializerAdapter<D>
where
  D: DeserializeOwned,
{
  fn supported_encodings() -> &'static [RepresentationIdentifier] {
    &repr_ids
  }

  fn from_bytes<'de>(input_bytes: &'de [u8], encoding: RepresentationIdentifier) -> Result<D> {
    match encoding {
      RepresentationIdentifier::PL_CDR_LE | RepresentationIdentifier::CDR_LE => {
        PlCdrDeserializer::from_little_endian_bytes::<D>(input_bytes)
      }
      RepresentationIdentifier::PL_CDR_BE | RepresentationIdentifier::CDR_BE => {
        PlCdrDeserializer::from_big_endian_bytes::<D>(input_bytes)
      }
      repr_id => Err(Error::Message(format!("Unknown representation identifier {:?}",repr_id
      ))),
    }
  }
}

pub struct PlCdrDeserializer<'de> {
  endianness: RepresentationIdentifier,
  input: &'de [u8],
}

impl<'de> PlCdrDeserializer<'de> {
  pub fn new(s: &'de [u8], endianness: RepresentationIdentifier) -> PlCdrDeserializer {
    PlCdrDeserializer {
      endianness,
      input: s,
    }
  }

  pub fn from_little_endian_bytes<'a, T: DeserializeOwned>(s: &'a [u8]) -> Result<T> {
    let deserializer = PlCdrDeserializer::new(s, RepresentationIdentifier::PL_CDR_LE);
    T::deserialize(deserializer)
  }

  pub fn from_big_endian_bytes<'a, T: DeserializeOwned>(s: &'a [u8]) -> Result<T> {
    let deserializer = PlCdrDeserializer::new(s, RepresentationIdentifier::PL_CDR_BE);
    T::deserialize(deserializer)
  }

  fn custom_deserialize_any<V>(self, visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
    //BuiltinDataDeserializer<LittleEndian, V::Value>: DataGeneration<V::Value>,
    //BuiltinDataDeserializer<BigEndian, V::Value>: DataGeneration<V::Value>,
  {
    match self.endianness {
      RepresentationIdentifier::PL_CDR_LE | RepresentationIdentifier::PL_CDR_BE => {
        //let rep: Result<Vec<u8>> = to_bytes::<u16, LittleEndian>(&u16::from(self.endianness));
        visitor.visit_bytes(&[self.endianness.to_bytes(), self.input].concat())
      }
      e => Err(Error::Message(format!("Unsupported endianness {:?}", e))),
    }
  }
}

impl<'de> Deserializer<'de> for PlCdrDeserializer<'de> {
  type Error = Error;

  fn deserialize_any<V>(self, visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    self.custom_deserialize_any(visitor)
  }

  fn deserialize_bool<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_i8<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_i16<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_i32<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_i64<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_u8<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_u16<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_u32<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_u64<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_f32<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_f64<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_char<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_str<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_string<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_bytes<V>(self, visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    visitor.visit_bytes(self.input)
  }

  fn deserialize_byte_buf<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_option<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_unit<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_unit_struct<V>(self, _name: &'static str, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_newtype_struct<V>(self, _name: &'static str, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_seq<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_tuple<V>(self, _len: usize, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_tuple_struct<V>(
    self,
    _name: &'static str,
    _len: usize,
    _visitor: V,
  ) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_map<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_struct<V>(
    self,
    _name: &'static str,
    _fields: &'static [&'static str],
    visitor: V,
  ) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    self.deserialize_any(visitor)
  }

  fn deserialize_enum<V>(
    self,
    _name: &'static str,
    _variants: &'static [&'static str],
    _visitor: V,
  ) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_identifier<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }

  fn deserialize_ignored_any<V>(self, _visitor: V) -> Result<V::Value>
  where
    V: serde::de::Visitor<'de>,
  {
    unimplemented!()
  }
}