roder_roadmap/
store.rs

1use std::fs;
2use std::path::PathBuf;
3
4use anyhow::Context;
5
6use crate::RoadmapState;
7use crate::parser::atomic_write;
8
9#[derive(Debug, Clone)]
10pub struct RoadmapStateStore {
11    data_dir: PathBuf,
12}
13
14impl RoadmapStateStore {
15    pub fn new(data_dir: impl Into<PathBuf>) -> Self {
16        Self {
17            data_dir: data_dir.into(),
18        }
19    }
20
21    pub fn path(&self) -> PathBuf {
22        self.data_dir.join("roadmaps").join("state.json")
23    }
24
25    pub fn load(&self) -> anyhow::Result<Option<RoadmapState>> {
26        let path = self.path();
27        if !path.exists() {
28            return Ok(None);
29        }
30        let bytes = fs::read(&path).with_context(|| format!("read {}", path.display()))?;
31        Ok(Some(serde_json::from_slice(&bytes)?))
32    }
33
34    pub fn save(&self, state: &RoadmapState) -> anyhow::Result<()> {
35        let bytes = serde_json::to_vec_pretty(state)?;
36        atomic_write(&self.path(), &bytes)
37    }
38}
roder_roadmap/store.rs

roder_roadmap/
store.rs
