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use std::collections::HashMap;
use serde_json::{json, Value};
use crate::Pos;
use crate::template::Template;
pub struct SaveState {
pub changes: HashMap<Pos, Vec<Template>>
}
impl SaveState {
pub fn new() -> Self {
Self {
changes: HashMap::new()
}
}
pub fn to_json(&self) -> Value {
json!({
"changes": self.changes.iter().map(
|(pos, templates)|
(pos, templates.iter().map(|t| t.to_json()).collect())
).collect::<Vec<(&Pos, Vec<Value>)>>()
})
}
pub fn from_json(val: &Value) -> Option<Self> {
let mut changes = HashMap::new();
for v in val.get("changes")?.as_array()? {
let pos = Pos::from_json(v.get(0)?)?;
let mut templates = Vec::new();
for t in v.get(1)?.as_array()? {
templates.push(Template::from_json(t)?);
}
changes.insert(pos, templates);
}
Some(Self {changes})
}
}
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