1use crate::{settings_store::SettingsStore, Settings};
  2use fs::Fs;
  3use futures::{channel::mpsc, StreamExt};
  4use gpui::{App, BackgroundExecutor, ReadGlobal, UpdateGlobal};
  5use std::{path::PathBuf, sync::Arc, time::Duration};
  6
  7pub const EMPTY_THEME_NAME: &str = "empty-theme";
  8
  9#[cfg(any(test, feature = "test-support"))]
 10pub fn test_settings() -> String {
 11    let mut value = crate::settings_store::parse_json_with_comments::<serde_json::Value>(
 12        crate::default_settings().as_ref(),
 13    )
 14    .unwrap();
 15    util::merge_non_null_json_value_into(
 16        serde_json::json!({
 17            "ui_font_family": "Courier",
 18            "ui_font_features": {},
 19            "ui_font_size": 14,
 20            "ui_font_fallback": [],
 21            "buffer_font_family": "Courier",
 22            "buffer_font_features": {},
 23            "buffer_font_size": 14,
 24            "buffer_font_fallback": [],
 25            "theme": EMPTY_THEME_NAME,
 26        }),
 27        &mut value,
 28    );
 29    value.as_object_mut().unwrap().remove("languages");
 30    serde_json::to_string(&value).unwrap()
 31}
 32
 33pub fn watch_config_file(
 34    executor: &BackgroundExecutor,
 35    fs: Arc<dyn Fs>,
 36    path: PathBuf,
 37) -> mpsc::UnboundedReceiver<String> {
 38    let (tx, rx) = mpsc::unbounded();
 39    executor
 40        .spawn(async move {
 41            let (events, _) = fs.watch(&path, Duration::from_millis(100)).await;
 42            futures::pin_mut!(events);
 43
 44            let contents = fs.load(&path).await.unwrap_or_default();
 45            if tx.unbounded_send(contents).is_err() {
 46                return;
 47            }
 48
 49            loop {
 50                if events.next().await.is_none() {
 51                    break;
 52                }
 53
 54                if let Ok(contents) = fs.load(&path).await {
 55                    if tx.unbounded_send(contents).is_err() {
 56                        break;
 57                    }
 58                }
 59            }
 60        })
 61        .detach();
 62    rx
 63}
 64
 65pub fn handle_settings_file_changes(
 66    mut user_settings_file_rx: mpsc::UnboundedReceiver<String>,
 67    cx: &mut App,
 68    settings_changed: impl Fn(Option<anyhow::Error>, &mut App) + 'static,
 69) {
 70    let user_settings_content = cx
 71        .background_executor()
 72        .block(user_settings_file_rx.next())
 73        .unwrap();
 74    SettingsStore::update_global(cx, |store, cx| {
 75        let result = store.set_user_settings(&user_settings_content, cx);
 76        if let Err(err) = &result {
 77            log::error!("Failed to load user settings: {err}");
 78        }
 79        settings_changed(result.err(), cx);
 80    });
 81    cx.spawn(move |cx| async move {
 82        while let Some(user_settings_content) = user_settings_file_rx.next().await {
 83            let result = cx.update_global(|store: &mut SettingsStore, cx| {
 84                let result = store.set_user_settings(&user_settings_content, cx);
 85                if let Err(err) = &result {
 86                    log::error!("Failed to load user settings: {err}");
 87                }
 88                settings_changed(result.err(), cx);
 89                cx.refresh_windows();
 90            });
 91            if result.is_err() {
 92                break; // App dropped
 93            }
 94        }
 95    })
 96    .detach();
 97}
 98
 99pub fn update_settings_file<T: Settings>(
100    fs: Arc<dyn Fs>,
101    cx: &App,
102    update: impl 'static + Send + FnOnce(&mut T::FileContent, &App),
103) {
104    SettingsStore::global(cx).update_settings_file::<T>(fs, update);
105}