mirror of
https://github.com/Psychotoxical/psysonic.git
synced 2026-07-21 23:05:46 +00:00
refactor: extract psysonic-integration crate (M5/7)
Moves all outbound external-service bridges out of the top crate into a
new psysonic-integration crate.
crates/psysonic-integration/
src/discord.rs Rich Presence + iTunes artwork
src/navidrome/{client,covers,...} Native REST API admin (5 modules)
src/remote.rs radio-browser, last.fm, ICY meta,
generic CORS proxy (fetch_url_bytes
/ fetch_json_url / resolve_stream_url)
src/bandsintown.rs events for an artist
src/lib.rs module declarations + macro re-exports
Top crate keeps `crate::discord` working via
`pub use psysonic_integration::discord;`.
invoke_handler! in lib.rs uses full deepest paths
(`psysonic_integration::navidrome::users::nd_list_users`, etc.) so
Tauri's `__cmd__*` magic macros resolve at the right module — same
pattern audio + syncfs already use.
Cross-crate refs migrated:
crate::subsonic_wire_user_agent → psysonic_core::user_agent::*
pub(crate) → pub (cross-crate visibility)
Behaviour preserving. Cargo check + clippy --workspace clean.
This commit is contained in:
Psychotoxical
@@ -0,0 +1,344 @@
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use psysonic_core::user_agent::subsonic_wire_user_agent;
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pub const RADIO_PAGE_SIZE: u32 = 25;
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/// Search the radio-browser.info directory (needs User-Agent header — CORS would block WebView).
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#[tauri::command]
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pub async fn search_radio_browser(query: String, offset: u32) -> Result<Vec<serde_json::Value>, String> {
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let client = reqwest::Client::new();
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let limit_s = RADIO_PAGE_SIZE.to_string();
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let offset_s = offset.to_string();
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let resp = client
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.get("https://de1.api.radio-browser.info/json/stations/search")
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.header("User-Agent", subsonic_wire_user_agent())
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.query(&[
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("name", query.as_str()),
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("hidebroken", "true"),
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("limit", limit_s.as_str()),
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("offset", offset_s.as_str()),
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])
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.send()
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.await
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.map_err(|e| e.to_string())?
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.error_for_status()
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.map_err(|e| e.to_string())?;
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resp.json::<Vec<serde_json::Value>>().await.map_err(|e| e.to_string())
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}
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/// Fetch top-voted stations from radio-browser.info for initial suggestions.
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#[tauri::command]
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pub async fn get_top_radio_stations(offset: u32) -> Result<Vec<serde_json::Value>, String> {
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let client = reqwest::Client::new();
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let limit_s = RADIO_PAGE_SIZE.to_string();
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let offset_s = offset.to_string();
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let resp = client
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.get("https://de1.api.radio-browser.info/json/stations/topvote")
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.header("User-Agent", subsonic_wire_user_agent())
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.query(&[("limit", limit_s.as_str()), ("offset", offset_s.as_str())])
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.send()
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.await
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.map_err(|e| e.to_string())?
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.error_for_status()
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.map_err(|e| e.to_string())?;
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resp.json::<Vec<serde_json::Value>>().await.map_err(|e| e.to_string())
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}
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/// Fetch arbitrary URL bytes (e.g. radio station favicon) through Rust to bypass CORS.
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/// Returns (bytes, content_type).
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#[tauri::command]
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pub async fn fetch_url_bytes(url: String) -> Result<(Vec<u8>, String), String> {
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let client = reqwest::Client::builder()
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.user_agent(subsonic_wire_user_agent())
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.timeout(std::time::Duration::from_secs(10))
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.build()
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.map_err(|e| e.to_string())?;
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let resp = client
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.get(&url)
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.send()
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.await
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.map_err(|e| e.to_string())?
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.error_for_status()
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.map_err(|e| e.to_string())?;
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let content_type = resp
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.headers()
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.get(reqwest::header::CONTENT_TYPE)
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.and_then(|v| v.to_str().ok())
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.unwrap_or("image/jpeg")
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.split(';')
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.next()
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.unwrap_or("image/jpeg")
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.trim()
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.to_string();
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let bytes = resp.bytes().await.map_err(|e| e.to_string())?;
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Ok((bytes.to_vec(), content_type))
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}
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/// Fetch a JSON API endpoint through Rust to bypass CORS/WebView networking restrictions.
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/// Returns the response body as a UTF-8 string for parsing on the JS side.
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#[tauri::command]
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pub async fn fetch_json_url(url: String) -> Result<String, String> {
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let client = reqwest::Client::builder()
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.user_agent(subsonic_wire_user_agent())
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.timeout(std::time::Duration::from_secs(10))
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.build()
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.map_err(|e| e.to_string())?;
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let resp = client
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.get(&url)
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.header("Accept", "application/json")
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.send()
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.await
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.map_err(|e| e.to_string())?
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.error_for_status()
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.map_err(|e| e.to_string())?;
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let text = resp.text().await.map_err(|e| e.to_string())?;
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Ok(text)
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}
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/// ICY metadata response returned to the frontend.
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#[derive(serde::Serialize)]
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pub struct IcyMetadata {
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/// The `StreamTitle` from the inline ICY metadata block in the stream (e.g. `"Artist - Title"`).
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stream_title: Option<String>,
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/// Value of the `icy-name` response header.
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icy_name: Option<String>,
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/// Value of the `icy-genre` response header.
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icy_genre: Option<String>,
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/// Value of the `icy-url` response header.
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icy_url: Option<String>,
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/// Value of the `icy-description` response header.
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icy_description: Option<String>,
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}
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/// Extract the first `File1=` stream URL from a PLS playlist file.
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pub fn parse_pls_stream_url(content: &str) -> Option<String> {
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content.lines()
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.map(str::trim)
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.find(|l| l.to_lowercase().starts_with("file1="))
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.and_then(|l| {
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let url = l[6..].trim();
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(url.starts_with("http://") || url.starts_with("https://"))
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.then(|| url.to_string())
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})
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}
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/// Extract the first non-comment HTTP URL from an M3U/M3U8 playlist file.
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pub fn parse_m3u_stream_url(content: &str) -> Option<String> {
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content.lines()
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.map(str::trim)
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.find(|l| !l.is_empty() && !l.starts_with('#')
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&& (l.starts_with("http://") || l.starts_with("https://")))
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.map(str::to_string)
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}
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/// If `url` points to a PLS or M3U playlist, fetch it and return the first
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/// stream URL it contains. Returns `None` for direct stream URLs.
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pub async fn resolve_playlist_url(client: &reqwest::Client, url: &str) -> Option<String> {
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let path = url.split('?').next().unwrap_or(url).to_lowercase();
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let is_pls = path.ends_with(".pls");
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let is_m3u = path.ends_with(".m3u") || path.ends_with(".m3u8");
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if !is_pls && !is_m3u {
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return None;
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}
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let resp = client
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.get(url)
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.timeout(std::time::Duration::from_secs(10))
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.send()
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.await
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.ok()?;
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let ct = resp
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.headers()
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.get("content-type")
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.and_then(|v| v.to_str().ok())
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.unwrap_or("")
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.to_lowercase();
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let text = resp.text().await.ok()?;
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if is_pls || ct.contains("scpls") || ct.contains("pls+xml") {
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parse_pls_stream_url(&text)
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} else {
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parse_m3u_stream_url(&text)
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}
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}
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/// Fetch ICY in-stream metadata from a radio stream URL.
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///
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/// Sends a GET request with `Icy-MetaData: 1` and reads just enough bytes
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/// (up to `icy-metaint` audio bytes plus the following metadata block) to
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/// extract the `StreamTitle`. The connection is dropped as soon as the
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/// first metadata chunk has been parsed, so bandwidth usage is minimal.
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///
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/// If `url` is a PLS or M3U playlist file it is resolved to the first direct
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/// stream URL before the ICY request is made.
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#[tauri::command]
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pub async fn fetch_icy_metadata(url: String) -> Result<IcyMetadata, String> {
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use futures_util::StreamExt;
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let client = reqwest::Client::builder()
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.user_agent(subsonic_wire_user_agent())
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.timeout(std::time::Duration::from_secs(15))
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.build()
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.map_err(|e| e.to_string())?;
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// Resolve PLS/M3U playlist files to their first direct stream URL.
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let url = resolve_playlist_url(&client, &url).await.unwrap_or(url);
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let resp = client
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.get(&url)
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.header("Icy-MetaData", "1")
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.send()
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.await
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.map_err(|e| e.to_string())?;
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// Harvest ICY headers before consuming the body.
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let headers = resp.headers();
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let icy_name = headers.get("icy-name").and_then(|v| v.to_str().ok()).map(str::to_string);
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let icy_genre = headers.get("icy-genre").and_then(|v| v.to_str().ok()).map(str::to_string);
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let icy_url = headers.get("icy-url").and_then(|v| v.to_str().ok()).map(str::to_string);
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let icy_description = headers.get("icy-description").and_then(|v| v.to_str().ok()).map(str::to_string);
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let metaint: Option<usize> = headers
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.get("icy-metaint")
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.and_then(|v| v.to_str().ok())
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.and_then(|s| s.parse().ok());
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// If the server doesn't advertise a metaint we can still return header info.
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let Some(metaint) = metaint else {
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return Ok(IcyMetadata { stream_title: None, icy_name, icy_genre, icy_url, icy_description });
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};
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// Cap metaint at 64 KiB to avoid reading unreasonably large audio chunks.
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let metaint = metaint.min(65_536);
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let needed = metaint + 1; // +1 for the metadata-length byte
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let mut buf: Vec<u8> = Vec::with_capacity(needed + 256);
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let mut stream = resp.bytes_stream();
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while buf.len() < needed {
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let Some(chunk) = stream.next().await else { break };
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let chunk = chunk.map_err(|e| e.to_string())?;
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buf.extend_from_slice(&chunk);
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}
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if buf.len() < needed {
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// Stream ended before we reached the metadata block.
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return Ok(IcyMetadata { stream_title: None, icy_name, icy_genre, icy_url, icy_description });
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}
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// The byte immediately after `metaint` audio bytes encodes metadata length:
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// actual_bytes = length_byte * 16
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let meta_len = buf[metaint] as usize * 16;
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if meta_len == 0 {
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return Ok(IcyMetadata { stream_title: None, icy_name, icy_genre, icy_url, icy_description });
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}
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// We may need to read a few more chunks to get the full metadata block.
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let total_needed = needed + meta_len;
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while buf.len() < total_needed {
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let Some(chunk) = stream.next().await else { break };
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let chunk = chunk.map_err(|e| e.to_string())?;
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buf.extend_from_slice(&chunk);
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}
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let meta_start = needed; // index of first metadata byte
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let meta_end = (meta_start + meta_len).min(buf.len());
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let meta_bytes = &buf[meta_start..meta_end];
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// ICY metadata is Latin-1 encoded; convert to a Rust String lossily.
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let meta_str: String = meta_bytes
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.iter()
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.map(|&b| if b == 0 { '\0' } else { b as char })
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.collect::<String>();
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// Parse StreamTitle='...' — value ends at the next unescaped single-quote.
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let stream_title = meta_str
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.split("StreamTitle='")
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.nth(1)
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.and_then(|s| {
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// Find closing quote that is NOT preceded by a backslash.
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let mut prev = '\0';
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let mut end = s.len();
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for (i, c) in s.char_indices() {
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if c == '\'' && prev != '\\' {
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end = i;
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break;
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}
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prev = c;
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}
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let title = s[..end].trim().to_string();
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if title.is_empty() { None } else { Some(title) }
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});
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Ok(IcyMetadata { stream_title, icy_name, icy_genre, icy_url, icy_description })
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}
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/// Resolve a PLS or M3U playlist URL to its first direct stream URL.
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/// Returns the original URL unchanged if it is not a recognised playlist format
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/// or if the playlist cannot be fetched/parsed.
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#[tauri::command]
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pub async fn resolve_stream_url(url: String) -> String {
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let Ok(client) = reqwest::Client::builder()
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.timeout(std::time::Duration::from_secs(10))
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.build()
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else {
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return url;
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};
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resolve_playlist_url(&client, &url).await.unwrap_or(url)
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}
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/// Proxy Last.fm API calls through Rust/reqwest to avoid WebView networking restrictions.
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/// `params` is a list of [key, value] pairs (method must be included).
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/// If `sign` is true an api_sig is computed. If `get` is true, a GET request is made.
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#[tauri::command]
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pub async fn lastfm_request(
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params: Vec<[String; 2]>,
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sign: bool,
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get: bool,
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api_key: String,
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api_secret: String,
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) -> Result<serde_json::Value, String> {
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use std::collections::HashMap;
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let mut map: HashMap<String, String> = params.into_iter().map(|[k, v]| (k, v)).collect();
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map.insert("api_key".into(), api_key.clone());
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if sign {
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let mut keys: Vec<String> = map.keys().cloned().collect();
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keys.sort();
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let sig_str: String = keys.iter()
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.filter(|k| k.as_str() != "format" && k.as_str() != "callback")
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.map(|k| format!("{}{}", k, map[k]))
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.collect::<String>();
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let sig_input = format!("{}{}", sig_str, api_secret);
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let digest = md5::compute(sig_input.as_bytes());
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map.insert("api_sig".into(), format!("{:x}", digest));
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}
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map.insert("format".into(), "json".into());
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let client = reqwest::Client::new();
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let resp = if get {
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client
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.get("https://ws.audioscrobbler.com/2.0/")
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.query(&map)
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.header("User-Agent", subsonic_wire_user_agent())
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.send()
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.await
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} else {
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client
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.post("https://ws.audioscrobbler.com/2.0/")
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.form(&map)
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.header("User-Agent", subsonic_wire_user_agent())
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.send()
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.await
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}.map_err(|e| e.to_string())?;
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let json: serde_json::Value = resp.json().await.map_err(|e| e.to_string())?;
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if let Some(err) = json.get("error") {
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return Err(format!("Last.fm {} {}", err, json.get("message").and_then(|m| m.as_str()).unwrap_or("")));
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}
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Ok(json)
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}
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Reference in New Issue
Block a user