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use std::collections::HashMap;
use serde::{Serialize, Deserialize, Serializer, Deserializer};
use crate::{
Pos,
Template,
};
#[derive(Debug, Clone, PartialEq)]
pub struct SaveState {
pub changes: HashMap<Pos, Vec<Template>>
}
impl SaveState {
pub fn new() -> Self {
Self {
changes: HashMap::new()
}
}
}
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize)]
struct SaveStateVec {pub changes: Vec<(Pos, Vec<Template>)>}
impl Serialize for SaveState {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer {
SaveStateVec{changes: self.changes.clone().into_iter().collect()}.serialize(serializer)
}
}
impl<'de> Deserialize<'de> for SaveState {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where D: Deserializer<'de> {
Ok(Self{changes: SaveStateVec::deserialize(deserializer)?.changes.into_iter().collect()})
}
}
#[cfg(test)]
mod tests{
use super::*;
use crate::hashmap;
use serde_json::json;
#[test]
fn test_empty_deserialize(){
assert_eq!(SaveState::deserialize(json!({"changes":[]})).unwrap(), SaveState::new());
}
#[test]
fn test_empty_serialize(){
assert_eq!(serde_json::to_value(SaveState::new()).unwrap(), json!({"changes":[]}));
}
#[test]
fn test_change_serialize(){
assert_eq!(
serde_json::to_value(
SaveState{changes: hashmap!{Pos::new(5,2) => vec![Template::empty("grass"), Template::empty("tree")]}}
).unwrap(),
json!({"changes":[[[5,2],["grass", "tree"]]]})
);
}
#[test]
fn test_changes_deserialize(){
assert_eq!(
SaveState::deserialize(json!({"changes":[[[1,1],["grass"]], [[5,2],["grass", "tree"]]]})).unwrap(),
SaveState{changes: hashmap!{
Pos::new(1,1) => vec![Template::empty("grass")],
Pos::new(5,2) => vec![Template::empty("grass"), Template::empty("tree")]
}}
);
}
}
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