1use anyhow::Result;
 2use serde_json::Value;
 3
 4pub fn remove_formatters_on_save(value: &mut Value) -> Result<()> {
 5    remove_formatters_on_save_inner(value, &[])?;
 6    let languages = value
 7        .as_object_mut()
 8        .and_then(|obj| obj.get_mut("languages"))
 9        .and_then(|languages| languages.as_object_mut());
10    if let Some(languages) = languages {
11        for (language_name, language) in languages.iter_mut() {
12            let path = vec!["languages", language_name];
13            remove_formatters_on_save_inner(language, &path)?;
14        }
15    }
16    Ok(())
17}
18
19fn remove_formatters_on_save_inner(value: &mut Value, path: &[&str]) -> Result<()> {
20    let Some(obj) = value.as_object_mut() else {
21        return Ok(());
22    };
23    let Some(format_on_save) = obj.get("format_on_save").cloned() else {
24        return Ok(());
25    };
26    let is_format_on_save_set_to_formatter = format_on_save
27        .as_str()
28        .map_or(true, |s| s != "on" && s != "off");
29    if !is_format_on_save_set_to_formatter {
30        return Ok(());
31    }
32
33    fn fmt_path(path: &[&str], key: &str) -> String {
34        let mut path = path.to_vec();
35        path.push(key);
36        path.join(".")
37    }
38
39    anyhow::ensure!(
40        obj.get("formatter").is_none(),
41        r#"Setting formatters in both "format_on_save" and "formatter" is deprecated. Please migrate the formatters from {} into {}"#,
42        fmt_path(path, "format_on_save"),
43        fmt_path(path, "formatter")
44    );
45
46    obj.insert("format_on_save".to_string(), serde_json::json!("on"));
47    obj.insert("formatter".to_string(), format_on_save);
48
49    Ok(())
50}