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use crate::protocol::*;
use futures::lock::Mutex;
use log::{error, warn};
use serde::de::DeserializeOwned;
use std::sync::Arc;
#[derive(Debug)]
pub struct ConfigManager<C> {
client: Arc<C>,
client_capabilities: Arc<ClientCapabilities>,
options: Mutex<Options>,
}
impl<C: LspClient + Send + Sync + 'static> ConfigManager<C> {
pub fn new(client: Arc<C>, client_capabilities: Arc<ClientCapabilities>) -> Self {
Self {
client,
client_capabilities,
options: Mutex::default(),
}
}
pub async fn get(&self) -> Options {
self.options.lock().await.clone()
}
pub async fn register(&self) {
if !self.client_capabilities.has_pull_configuration_support()
&& self.client_capabilities.has_push_configuration_support()
{
let registration = Registration {
id: "pull-config".into(),
method: "workspace/didChangeConfiguration".into(),
register_options: None,
};
let params = RegistrationParams {
registrations: vec![registration],
};
if let Err(why) = self.client.register_capability(params).await {
error!(
"Failed to register \"workspace/didChangeConfiguration\": {}",
why.message
);
}
}
}
pub async fn push(&self, options: serde_json::Value) {
match serde_json::from_value(options) {
Ok(options) => {
*self.options.lock().await = options;
}
Err(why) => {
error!("Invalid configuration: {}", why);
}
}
}
pub async fn pull(&self) -> bool {
if self.client_capabilities.has_pull_configuration_support() {
let latex = self.pull_section("latex").await;
let bibtex = self.pull_section("bibtex").await;
let new_options = Options {
latex: Some(latex),
bibtex: Some(bibtex),
};
let mut old_options = self.options.lock().await;
let has_changed = *old_options != new_options;
*old_options = new_options;
has_changed
} else {
false
}
}
async fn pull_section<T: DeserializeOwned + Default>(&self, section: &str) -> T {
let params = ConfigurationParams {
items: vec![ConfigurationItem {
section: Some(section.into()),
scope_uri: None,
}],
};
match self.client.configuration(params).await {
Ok(json) => match serde_json::from_value::<Vec<T>>(json) {
Ok(config) => config.into_iter().next().unwrap(),
Err(_) => {
warn!("Invalid configuration: {}", section);
T::default()
}
},
Err(why) => {
error!(
"Retrieving configuration for {} failed: {}",
section, why.message
);
T::default()
}
}
}
}
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