61 lines
1.9 KiB
Rust
61 lines
1.9 KiB
Rust
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use std::sync::OnceLock;
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use tokio::sync::Mutex;
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const HELP_URL: &str =
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"https://repo.anhonesthost.net/cybercovellc/triple-c/raw/branch/main/HOW-TO-USE.md";
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const EMBEDDED_HELP: &str = include_str!("../../../../HOW-TO-USE.md");
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/// Cached help content fetched from the remote repo (or `None` if not yet fetched).
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static CACHED_HELP: OnceLock<Mutex<Option<String>>> = OnceLock::new();
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/// Return the help markdown content.
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///
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/// On the first call, tries to fetch the latest version from the gitea repo.
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/// If that fails (network error, timeout, etc.), falls back to the version
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/// embedded at compile time. The result is cached for the rest of the session.
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#[tauri::command]
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pub async fn get_help_content() -> Result<String, String> {
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let mutex = CACHED_HELP.get_or_init(|| Mutex::new(None));
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let mut guard = mutex.lock().await;
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if let Some(ref cached) = *guard {
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return Ok(cached.clone());
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}
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let content = match fetch_remote_help().await {
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Ok(md) => {
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log::info!("Loaded help content from remote repo");
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md
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}
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Err(e) => {
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log::info!("Using embedded help content (remote fetch failed: {})", e);
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EMBEDDED_HELP.to_string()
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}
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};
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*guard = Some(content.clone());
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Ok(content)
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}
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async fn fetch_remote_help() -> Result<String, String> {
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let client = reqwest::Client::builder()
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.timeout(std::time::Duration::from_secs(10))
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.build()
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.map_err(|e| format!("Failed to create HTTP client: {}", e))?;
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let resp = client
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.get(HELP_URL)
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.send()
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.await
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.map_err(|e| format!("Failed to fetch help content: {}", e))?;
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if !resp.status().is_success() {
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return Err(format!("Remote returned status {}", resp.status()));
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}
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resp.text()
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.await
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.map_err(|e| format!("Failed to read response body: {}", e))
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}
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