difflore_core/domain/
settings.rs

1use crate::errors::CoreError;
2use crate::models::AppSettingsRecord;
3
4pub async fn get() -> crate::Result<AppSettingsRecord> {
5    let path = crate::paths::data_home()
6        .map_err(CoreError::Internal)?
7        .join("settings.json");
8    if !path.exists() {
9        let defaults = AppSettingsRecord::default();
10        let json = serde_json::to_string_pretty(&defaults)?;
11        std::fs::write(&path, json)?;
12        return Ok(defaults);
13    }
14    let content = std::fs::read_to_string(&path)?;
15    // The error is already named & propagated — the prior `eprintln!`
16    // was a duplicate emit. CLI handlers (`exit_err`) print the wrapped
17    // message themselves; library code shouldn't smuggle stderr writes.
18    let settings: AppSettingsRecord = serde_json::from_str(&content).map_err(|e| {
19        CoreError::Internal(format!(
20            "settings.json is corrupted and could not be parsed: {e}"
21        ))
22    })?;
23    Ok(settings)
24}
25
26pub async fn update(input: AppSettingsRecord) -> crate::Result<AppSettingsRecord> {
27    let dir = crate::paths::data_home().map_err(CoreError::Internal)?;
28    std::fs::create_dir_all(&dir)?;
29    let path = dir.join("settings.json");
30
31    let mut current: serde_json::Value = if path.exists() {
32        let content = std::fs::read_to_string(&path)?;
33        serde_json::from_str(&content).unwrap_or_else(|_| serde_json::json!({}))
34    } else {
35        serde_json::json!({})
36    };
37
38    let patch: serde_json::Value = serde_json::to_value(&input)?;
39
40    if let (Some(base), Some(overlay)) = (current.as_object_mut(), patch.as_object()) {
41        for (k, v) in overlay {
42            base.insert(k.clone(), v.clone());
43        }
44    }
45
46    let merged: AppSettingsRecord = serde_json::from_value(current.clone())
47        .map_err(|e| CoreError::Internal(format!("Failed to merge settings: {e}")))?;
48
49    let json = serde_json::to_string_pretty(&merged)?;
50    std::fs::write(&path, json)?;
51    Ok(merged)
52}
difflore_core/domain/settings.rs

difflore_core/domain/
settings.rs
