fastnbt 2.0.2

use std::io::Write;

use byteorder::{BigEndian, ByteOrder, NativeEndian, WriteBytesExt};
use serde::ser::Impossible;

use crate::{error::Error, Tag};

use super::{serializer::Serializer, write_nbt::WriteNbt};

/// ArraySerializer is for serializing the NBT Arrays ie ByteArray, IntArray and
/// LongArray.
pub(crate) struct ArraySerializer<'a, W: Write> {
    pub(crate) ser: &'a mut Serializer<W>,
    pub(crate) tag: Tag,
}

impl<'a, W: Write> serde::Serializer for ArraySerializer<'a, W> {
    type Ok = ();
    type Error = Error;
    type SerializeSeq = Impossible<(), Error>;
    type SerializeTuple = Impossible<(), Error>;
    type SerializeTupleStruct = Impossible<(), Error>;
    type SerializeTupleVariant = Impossible<(), Error>;
    type SerializeMap = Impossible<(), Error>;
    type SerializeStruct = Impossible<(), Error>;
    type SerializeStructVariant = Impossible<(), Error>;

    fn serialize_bool(self, _v: bool) -> Result<Self::Ok, Self::Error> {
        unimplemented!()
    }

    fn serialize_i8(self, _v: i8) -> Result<Self::Ok, Self::Error> {
        unimplemented!()
    }

    fn serialize_i16(self, _v: i16) -> Result<Self::Ok, Self::Error> {
        unimplemented!()
    }

    fn serialize_i32(self, _v: i32) -> Result<Self::Ok, Self::Error> {
        unimplemented!()
    }

    fn serialize_i64(self, _v: i64) -> Result<Self::Ok, Self::Error> {
        unimplemented!()
    }

    fn serialize_u8(self, _v: u8) -> Result<Self::Ok, Self::Error> {
        unimplemented!()
    }

    fn serialize_u16(self, _v: u16) -> Result<Self::Ok, Self::Error> {
        unimplemented!()
    }

    fn serialize_u32(self, _v: u32) -> Result<Self::Ok, Self::Error> {
        unimplemented!()
    }

    fn serialize_u64(self, _v: u64) -> Result<Self::Ok, Self::Error> {
        unimplemented!()
    }

    fn serialize_f32(self, _v: f32) -> Result<Self::Ok, Self::Error> {
        unimplemented!()
    }

    fn serialize_f64(self, _v: f64) -> Result<Self::Ok, Self::Error> {
        unimplemented!()
    }

    fn serialize_char(self, _v: char) -> Result<Self::Ok, Self::Error> {
        unimplemented!()
    }

    fn serialize_str(self, _v: &str) -> Result<Self::Ok, Self::Error> {
        unimplemented!()
    }

    fn serialize_bytes(self, v: &[u8]) -> Result<Self::Ok, Self::Error> {
        match self.tag {
            Tag::ByteArray => {
                self.ser.writer.write_len(v.len())?;
                self.ser.writer.write_all(v)?;
            }
            Tag::IntArray => {
                let stride = 4;
                let len = v.len() / stride;
                self.ser.writer.write_len(len)?;

                for chunk in v.chunks(stride) {
                    let el = NativeEndian::read_i32(chunk);
                    self.ser.writer.write_i32::<BigEndian>(el)?;
                }
            }
            Tag::LongArray => {
                let stride = 8;
                let len = v.len() / stride;
                self.ser.writer.write_len(len)?;

                for chunk in v.chunks(stride) {
                    let el = NativeEndian::read_i64(chunk);
                    self.ser.writer.write_i64::<BigEndian>(el)?;
                }
            }
            _ => panic!(),
        };

        Ok(())
    }

    fn serialize_none(self) -> Result<Self::Ok, Self::Error> {
        unimplemented!()
    }

    fn serialize_some<T: ?Sized>(self, _value: &T) -> Result<Self::Ok, Self::Error>
    where
        T: serde::Serialize,
    {
        unimplemented!()
    }

    fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
        unimplemented!()
    }

    fn serialize_unit_struct(self, _name: &'static str) -> Result<Self::Ok, Self::Error> {
        unimplemented!()
    }

    fn serialize_unit_variant(
        self,
        _name: &'static str,
        _variant_index: u32,
        _variant: &'static str,
    ) -> Result<Self::Ok, Self::Error> {
        unimplemented!()
    }

    fn serialize_newtype_struct<T: ?Sized>(
        self,
        _name: &'static str,
        _value: &T,
    ) -> Result<Self::Ok, Self::Error>
    where
        T: serde::Serialize,
    {
        unimplemented!()
    }

    fn serialize_newtype_variant<T: ?Sized>(
        self,
        _name: &'static str,
        _variant_index: u32,
        _variant: &'static str,
        _value: &T,
    ) -> Result<Self::Ok, Self::Error>
    where
        T: serde::Serialize,
    {
        unimplemented!()
    }

    fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
        unimplemented!()
    }

    fn serialize_tuple(self, _len: usize) -> Result<Self::SerializeTuple, Self::Error> {
        unimplemented!()
    }

    fn serialize_tuple_struct(
        self,
        _name: &'static str,
        _len: usize,
    ) -> Result<Self::SerializeTupleStruct, Self::Error> {
        unimplemented!()
    }

    fn serialize_tuple_variant(
        self,
        _name: &'static str,
        _variant_index: u32,
        _variant: &'static str,
        _len: usize,
    ) -> Result<Self::SerializeTupleVariant, Self::Error> {
        unimplemented!()
    }

    fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
        unimplemented!()
    }

    fn serialize_struct(
        self,
        _name: &'static str,
        _len: usize,
    ) -> Result<Self::SerializeStruct, Self::Error> {
        unimplemented!()
    }

    fn serialize_struct_variant(
        self,
        _name: &'static str,
        _variant_index: u32,
        _variant: &'static str,
        _len: usize,
    ) -> Result<Self::SerializeStructVariant, Self::Error> {
        unimplemented!()
    }
}