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|
use crate::types::Chat;
use crate::uuid::UUID4;
use crate::{
Deserialize as McDeserialize, DeserializeErr, DeserializeResult, Serialize as McSerialize,
SerializeErr, SerializeResult,
};
use serde::{Deserialize, Deserializer, Serialize, Serializer};
use alloc::{string::String, fmt, vec::Vec, borrow::ToOwned};
use alloc::format;
#[cfg(all(test, feature = "std"))]
use crate::protocol::TestRandom;
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub struct StatusSpec {
pub version: StatusVersionSpec,
pub players: StatusPlayersSpec,
pub description: Chat,
#[serde(skip_serializing_if = "Option::is_none")]
pub favicon: Option<StatusFaviconSpec>,
}
impl McSerialize for StatusSpec {
fn mc_serialize<S: crate::Serializer>(&self, to: &mut S) -> SerializeResult {
serde_json::to_string(self)
.map_err(move |err| {
SerializeErr::FailedJsonEncode(format!("failed to serialize json status {}", err))
})?
.mc_serialize(to)
}
}
impl McDeserialize for StatusSpec {
fn mc_deserialize(data: &[u8]) -> DeserializeResult<'_, Self> {
String::mc_deserialize(data)?.try_map(move |v| {
serde_json::from_str(v.as_str()).map_err(move |err| {
DeserializeErr::CannotUnderstandValue(format!(
"failed to deserialize json status {}",
err
))
})
})
}
}
#[cfg(all(test, feature = "std"))]
impl TestRandom for StatusSpec {
fn test_gen_random() -> Self {
Self {
version: StatusVersionSpec {
protocol: rand::random(),
name: String::test_gen_random(),
},
players: StatusPlayersSpec {
sample: Vec::default(),
max: rand::random(),
online: rand::random(),
},
favicon: None,
description: Chat::test_gen_random(),
}
}
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub struct StatusVersionSpec {
pub name: String,
pub protocol: i32,
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub struct StatusPlayersSpec {
pub max: i32,
pub online: i32,
#[serde(skip_serializing_if = "Vec::is_empty")]
#[serde(default = "Vec::default")]
pub sample: Vec<StatusPlayerSampleSpec>,
}
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
pub struct StatusPlayerSampleSpec {
pub name: String,
pub id: UUID4,
}
#[derive(Clone, Debug, PartialEq)]
pub struct StatusFaviconSpec {
pub content_type: String,
pub data: Vec<u8>,
}
impl Serialize for StatusFaviconSpec {
fn serialize<S>(&self, serializer: S) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>
where
S: Serializer,
{
let data_base64 = base64::encode(self.data.as_slice());
let content = alloc::format!("data:{};base64,{}", self.content_type, data_base64);
serializer.serialize_str(content.as_str())
}
}
impl<'de> Deserialize<'de> for StatusFaviconSpec {
fn deserialize<D>(deserializer: D) -> Result<Self, <D as Deserializer<'de>>::Error>
where
D: Deserializer<'de>,
{
struct Visitor;
impl serde::de::Visitor<'_> for Visitor {
type Value = StatusFaviconSpec;
fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(formatter, "a string with base64 data for favicon")
}
fn visit_str<E: serde::de::Error>(self, v: &str) -> Result<Self::Value, E> {
// favicon syntax data:{content-type};base64,{}
let v = str_tag(v, "data:", &self)?;
let content_type = str_until_pat(v, ";", &self)?;
let rest = str_tag(v, "base64,", &self)?;
match base64::decode(rest) {
Ok(data) => {
Ok(StatusFaviconSpec{
data,
content_type: content_type.to_owned(),
})
},
Err(err) => {
Err(E::custom(format_args!("failed base64 decode {:?}", err)))
}
}
}
}
deserializer.deserialize_str(Visitor {})
}
}
fn str_tag<'a, E, V>(
target: &'a str,
expected: &str,
v: &V,
) -> Result<&'a str, E> where
E: serde::de::Error,
V: serde::de::Visitor<'a>
{
let (front, back) = str_take(target, expected.len(), v)?;
if front != expected {
Err(E::invalid_value(serde::de::Unexpected::Str(target), v))
} else {
Ok(back)
}
}
fn str_until_pat<'a, E, V>(
target: &'a str,
pat: &str,
v: &V,
) -> Result<&'a str, E> where
E: serde::de::Error,
V: serde::de::Visitor<'a>
{
let n_pat = pat.len();
if target.len() < n_pat {
return Err(E::invalid_value(serde::de::Unexpected::Str(target), v));
}
for i in 0..=(target.len()-n_pat) {
let v = &target[i..i+n_pat];
if v == pat {
return Ok(&target[..i]);
}
}
Err(E::invalid_value(serde::de::Unexpected::Str(target), v))
}
fn str_take<'a, E, V>(
target: &'a str,
n: usize,
v: &V,
) -> Result<(&'a str, &'a str), E> where
E: serde::de::Error,
V: serde::de::Visitor<'a>
{
if target.len() < n {
Err(E::invalid_value(serde::de::Unexpected::Str(target), v))
} else {
Ok(target.split_at(n))
}
}
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