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use crate::types::Chat;
use crate::{SerializeResult, SerializeErr, Serialize as McSerialize, Deserialize as McDeserialize, DeserializeResult, DeserializeErr};
use crate::uuid::UUID4;
use serde::{Serialize, Serializer, Deserialize, Deserializer};
use std::fmt;
#[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))
})
})
}
}
#[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 = 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> {
use lazy_static::lazy_static;
use regex::Regex;
// regex to parse valid base64 content
const PATTERN: &str = r"^data:([A-Za-z/]+);base64,([-A-Za-z0-9+/]*={0,3})$";
lazy_static! {
static ref RE: Regex = Regex::new(PATTERN).expect("regex is valid");
}
// try to use regex on the input
// RE.captures_iter(v).next() means "try to get the first capture iterator"
// then we take that iterator, get(1), and if 1 exists, get(2), and if both exist,
// then we try to parse the base64, and drop the error if one occurs. We then
// wrap the content_type and parsed data in StatusFaviconSpec
// then we convert the option to a result using map and unwrap_or_else
let mut captures: regex::CaptureMatches<'_, '_> = RE.captures_iter(v);
captures.next().and_then(move |captures|
captures.get(1).and_then(move |content_type|
captures.get(2).and_then(move |raw_base64|
base64::decode(raw_base64.as_str().as_bytes()).map(move |data| {
StatusFaviconSpec {
content_type: content_type.as_str().to_owned(),
data,
}
}).ok())))
.map(move |result| Ok(result))
.unwrap_or_else(|| Err(serde::de::Error::invalid_value(serde::de::Unexpected::Str(v), &self)))
}
}
deserializer.deserialize_str(Visitor {})
}
}
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