Reduce core dependencies

.github/workflows/ci.yml

@@ -74,6 +74,7 @@ jobs:
         uses: actions-rs/cargo@v1
         with:
           command: test
+          args: --features env-file
 
   lints:
     name: Lints

CHANGELOG.md

@@ -1,3 +1,22 @@
+## 0.11 (unreleased)
+
+- Rewritten documentation in hopes that it's easier to get started with Rspotify.
+- Reduced the number of examples. Instead of having an example for each endpoint, which is repetitive and unhelpful for newcomers, some real-life examples are now included. If you'd like to add your own example, please do!
+- Add `add_item_to_queue` endpoint.
+- Fix typo in `transfer_playback`: `device_id` to `device_ids`.
+- Fix race condition when using a single client from multiple threads (see [#114](https://github.com/ramsayleung/rspotify/pull/114) for more information).
+- Rspotify should now be considerably lighter and less bloated:
+  + Remove unused dependencies: `base64`, `env_logger`, `derive_builder`, `random`, `url`. <!-- NOTE: derive_builder might not be removed after all -->
+  + Remove `itertools` dependency by using the standard library.
+  + Remove `rand` in place of `getrandom` to [reduce total dependencies and compile times](https://github.com/ramsayleung/rspotify/issues/108#issuecomment-673587185).
+  + `webbrowser` and access to functions that use it (`util::get_token`, `util::get_token_without_cache` and `util::request_token`) can be disabled for the non-CLI applications with the `browser` feature. It's still enabled by default due to [its frequent usage](https://github.com/ramsayleung/rspotify/pull/110#issuecomment-674410604).
+  + Reduced repetitive code and boilerplate internally in several places.
+- Updated dependencies to the latest versions, integrated Dependabot to keep track of them.
+
+**Breaking changes:**
+- `dotenv` support is now optional. You can enable it with the `env-file` feature to have the same behavior as before.
+- Fix typo in `user_playlist_remove_specific_occurrenes_of_tracks`, now it's `user_playlist_remove_specific_occurrences_of_tracks`.
+
 ## 0.10 (2020/07/01)
 
 - Add `get_access_token_without_cache` and `refresh_access_token_without_cache` to get and refresh access token without caching it.
@@ -39,7 +58,7 @@
 - Code optimize, remove a unnecessary mut and add a missing reference
 - Fix reqwest breaking change
 - Add missing devices type
-- Add `position_ms` to `start_playback
+- Add `position_ms` to `start_playback`
 
 ## 0.6 (2019/07/22)
 

Cargo.toml

@@ -4,32 +4,34 @@ name = "rspotify"
 version = "0.10.0"
 license = "MIT"
 readme = "README.md"
-description="Spotify API wrapper"
-homepage="https://github.com/samrayleung/rspotify"
-repository="https://github.com/samrayleung/rspotify"
-keywords=["spotify","api"]
+description = "Spotify API wrapper"
+homepage = "https://github.com/ramsayleung/rspotify"
+repository = "https://github.com/ramsayleung/rspotify"
+keywords = ["spotify","api"]
 edition = "2018"
 
 [dependencies]
 chrono = { version = "0.4.13", features = ["serde", "rustc-serialize"] }
-dotenv = "0.15.0"
+dotenv = { version = "0.15.0", optional = true }
 failure = "0.1.8"
 lazy_static = "1.4.0"
 log = "0.4.11"
 percent-encoding = "2.1.0"
-rand = "0.7.3"
+getrandom = "0.1.14"
 reqwest = { version = "0.10.7", features = ["json", "socks"], default-features = false }
 serde = { version = "1.0.115", features = ["derive"] }
 serde_json = "1.0.57"
-webbrowser = "0.5.5"
+webbrowser = { version = "0.5.5", optional = true }
 
 [dev-dependencies]
 async_once = { version = "0.1.0", features = ["tokio"] }
 tokio = { version = "0.2.22", features = ["full"] }
 futures = "0.3.5"
 
 [features]
-default = ["reqwest/default-tls"]
+default = ["reqwest/default-tls", "browser"]
+env-file = ["dotenv"]
+browser = ["webbrowser"]
 blocking = ["reqwest/default-tls", "reqwest/blocking"]
 # Passing the TLS features to reqwest.
 native-tls = ["reqwest/native-tls"]
@@ -39,22 +41,51 @@ native-tls-vendored-blocking = ["reqwest/native-tls-vendored", "reqwest/blocking
 rustls-tls = ["reqwest/rustls-tls"]
 rustls-tls-blocking = ["reqwest/rustls-tls", "reqwest/blocking"]
 
+[package.metadata.docs.rs]
+# Also documenting the blocking module
+features = ["blocking"]
+
+[[example]]
+name = "album"
+required-features = ["env-file"]
+path = "examples/album.rs"
+
+[[example]]
+name = "current_user_recently_played"
+required-features = ["env-file"]
+path = "examples/current_user_recently_played.rs"
+
+[[example]]
+name = "track"
+required-features = ["env-file"]
+path = "examples/track.rs"
+
+[[example]]
+name = "tracks"
+required-features = ["env-file"]
+path = "examples/tracks.rs"
+
+[[example]]
+name = "with_refresh_token"
+required-features = ["env-file"]
+path = "examples/with_refresh_token.rs"
+
 [[example]]
 name = "device"
-required-features = ["blocking"]
+required-features = ["env-file", "blocking"]
 path = "examples/blocking/device.rs"
 
 [[example]]
 name = "me"
-required-features = ["blocking"]
+required-features = ["env-file", "blocking"]
 path = "examples/blocking/me.rs"
 
 [[example]]
 name = "blocking_search"
-required-features = ["blocking"]
+required-features = ["env-file", "blocking"]
 path = "examples/blocking/search.rs"
 
 [[example]]
 name = "seek_track"
-required-features = ["blocking"]
+required-features = ["env-file", "blocking"]
 path = "examples/blocking/seek_track.rs"

examples/webapp/Cargo.toml

@@ -4,9 +4,7 @@ version = "0.1.0"
 authors = ["Ramsay <ramsayleung@gmail.com>"]
 edition = "2018"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [dependencies]
 rocket = "0.4.5"
-rocket_contrib = {version = "0.4.5", features= ["tera_templates"]}
-rspotify = {version = "0.10.0", features = ["blocking"]}
+rocket_contrib = { version = "0.4.5", features = ["tera_templates"] }
+rspotify = { path = "../..", features = ["blocking"] }

examples/webapp/src/main.rs

@@ -1,28 +1,27 @@
+//! In this example, the token is saved into a cache file. If you are building a real-world web
+//! app, it's easy to save token into database, by calling the function
+//! `util::get_token_without_cache()`, instead of `util::get_token()`, which saves token by
+//! default.
+
 #![feature(proc_macro_hygiene, decl_macro)]
+
 #[macro_use]
 extern crate rocket;
 
-use rocket::http::Cookie;
-use rocket::http::Cookies;
+use rocket::http::{Cookie, Cookies};
 use rocket::response::Redirect;
 use rocket_contrib::json;
 use rocket_contrib::json::JsonValue;
 use rocket_contrib::templates::Template;
 use rspotify::blocking::client::Spotify;
-use std::fs;
-use std::path::Path;
-use std::path::PathBuf;
 
-use rspotify::blocking::oauth2::SpotifyClientCredentials;
-use rspotify::blocking::oauth2::SpotifyOAuth;
+use rspotify::blocking::oauth2::{SpotifyClientCredentials, SpotifyOAuth};
 use rspotify::blocking::util;
-use std::env;
 
+use std::env;
 use std::collections::HashMap;
-/// In this example, the token is saved into a cache file. If you are building a real-world web
-/// app, it's easy to save token into database, by calling the function
-/// `util::get_token_without_cache()`, instead of `util::get_token()`, which saves token by
-/// default.
+use std::fs;
+use std::path::{Path, PathBuf};
 
 #[derive(Debug, Responder)]
 pub enum AppResponse {

examples/with_refresh_token.rs

@@ -15,8 +15,6 @@
 //! tokens](https://github.com/felix-hilden/tekore/issues/86),
 //! so in the case of Spotify it doesn't seem to revoke them at all.
 
-use dotenv::dotenv;
-
 use rspotify::client::Spotify;
 use rspotify::oauth2::{SpotifyClientCredentials, SpotifyOAuth};
 use rspotify::util::get_token_without_cache;
@@ -81,7 +79,6 @@ async fn do_things(spotify: Spotify) {
 #[tokio::main]
 async fn main() {
     // The default credentials from the `.env` file will be used by default.
-    dotenv().ok();
     let mut oauth = SpotifyOAuth::default()
         .scope("user-follow-read user-follow-modify")
         .build();

src/blocking/client.rs

@@ -823,16 +823,37 @@ impl Spotify {
         self.convert_result::<CUDResult>(&result)
     }
 
-    /// [remove tracks playlist](https://developer.spotify.com/web-api/remove-tracks-playlist/)
-    /// Removes all occurrences of the given tracks from the given playlist
-    /// Parameters:
-    /// - user_id - the id of the user
-    /// - playlist_id - the id of the playlist
-    /// - tracks - an array of map containing Spotify URIs of the tracks
-    ///  to remove with their current positions in the playlist.  For example:
-    /// { "tracks": [{ "uri": "spotify:track:4iV5W9uYEdYUVa79Axb7Rh", "positions": [0,3] },{
-    /// "uri": "spotify:track:1301WleyT98MSxVHPZCA6M", "positions": [7] }] }
-    /// - snapshot_id - optional id of the playlist snapshot
+    /// [remove tracks playlist
+    /// ](https://developer.spotify.com/web-api/remove-tracks-playlist/).
+    ///
+    /// Removes specfic occurrences of the given tracks from the given
+    /// playlist. Parameters:
+    ///
+    /// - user_id: the id of the user
+    /// - playlist_id: the id of the playlist
+    /// - tracks: an array of map containing Spotify URIs of the tracks to remove
+    /// with their current positions in the playlist. For example:
+    ///
+    /// ```json
+    /// {
+    ///    "tracks":[
+    ///       {
+    ///          "uri":"spotify:track:4iV5W9uYEdYUVa79Axb7Rh",
+    ///          "positions":[
+    ///             0,
+    ///             3
+    ///          ]
+    ///       },
+    ///       {
+    ///          "uri":"spotify:track:1301WleyT98MSxVHPZCA6M",
+    ///          "positions":[
+    ///             7
+    ///          ]
+    ///       }
+    ///    ]
+    /// }
+    /// ```
+    /// - snapshot_id: optional id of the playlist snapshot
     pub fn user_playlist_remove_specific_occurrenes_of_tracks(
         &self,
         user_id: &str,

src/blocking/oauth2.rs

@@ -1,7 +1,6 @@
 //! The module contains function about authorization and client-credential
 // use 3rd party library
 use chrono::prelude::*;
-use dotenv::dotenv;
 use log::{debug, error, trace};
 use percent_encoding::{utf8_percent_encode, AsciiSet, CONTROLS};
 use reqwest::blocking::Client;
@@ -98,7 +97,10 @@ impl TokenInfo {
 impl SpotifyClientCredentials {
     /// Build default SpotifyClientCredentials
     pub fn default() -> SpotifyClientCredentials {
-        dotenv().ok();
+        #[cfg(feature = "env-file")]
+        {
+            dotenv::dotenv().ok();
+        }
         let client_id = env::var("CLIENT_ID").unwrap_or_default();
         let client_secret = env::var("CLIENT_SECRET").unwrap_or_default();
         trace!(
@@ -207,7 +209,10 @@ impl SpotifyOAuth {
     // }
 
     pub fn default() -> SpotifyOAuth {
-        dotenv().ok();
+        #[cfg(feature = "env-file")]
+        {
+            dotenv::dotenv().ok();
+        }
         let client_id = env::var("CLIENT_ID").unwrap_or_default();
         let client_secret = env::var("CLIENT_SECRET").unwrap_or_default();
         let redirect_uri = env::var("REDIRECT_URI").unwrap_or_default();

src/blocking/util.rs

@@ -1,13 +1,10 @@
 //! Utils function
 use chrono::prelude::*;
-use rand::distributions::Alphanumeric;
-use rand::{self, Rng};
-use webbrowser;
+use getrandom::getrandom;
 
 use std::collections::HashMap;
 use std::fmt::Debug;
 use std::hash::Hash;
-use std::io;
 use std::string::ToString;
 
 use super::oauth2::{SpotifyOAuth, TokenInfo};
@@ -19,9 +16,14 @@ pub fn datetime_to_timestamp(elapsed: u32) -> i64 {
 }
 /// Generate `length` random chars
 pub fn generate_random_string(length: usize) -> String {
-    rand::thread_rng()
-        .sample_iter(&Alphanumeric)
-        .take(length)
+    let alphanum: &[u8] =
+        "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789".as_bytes();
+    let mut buf = vec![0u8; length];
+    getrandom(&mut buf).unwrap();
+    let range = alphanum.len();
+
+    buf.iter()
+        .map(|byte| alphanum[*byte as usize % range] as char)
         .collect()
 }
 
@@ -71,6 +73,7 @@ pub fn convert_str_to_map(query_str: &mut str) -> HashMap<&str, &str> {
     map
 }
 
+#[cfg(feature = "browser")]
 pub fn request_token(spotify_oauth: &mut SpotifyOAuth) {
     let state = generate_random_string(16);
     let auth_url = spotify_oauth.get_authorize_url(Some(&state), None);
@@ -98,7 +101,9 @@ pub fn process_token_without_cache(
 }
 
 /// Get tokenInfo by Authorization
+#[cfg(feature = "browser")]
 pub fn get_token(spotify_oauth: &mut SpotifyOAuth) -> Option<TokenInfo> {
+    use std::io;
     match spotify_oauth.get_cached_token() {
         Some(token_info) => Some(token_info),
         None => {
@@ -114,7 +119,9 @@ pub fn get_token(spotify_oauth: &mut SpotifyOAuth) -> Option<TokenInfo> {
 }
 
 /// Get tokenInfo by Authorization without cache.
+#[cfg(feature = "browser")]
 pub fn get_token_without_cache(spotify_oauth: &mut SpotifyOAuth) -> Option<TokenInfo> {
+    use std::io;
     request_token(spotify_oauth);
     println!("Enter the URL you were redirected to: ");
     let mut input = String::new();

src/client.rs

@@ -808,14 +808,32 @@ impl Spotify {
     /// [remove tracks playlist](https://developer.spotify.com/web-api/remove-tracks-playlist/)
     /// Removes specfic occurrences of the given tracks from the given playlist
     /// Parameters:
-    /// - user_id - the id of the user
-    /// - playlist_id - the id of the playlist
-    /// - tracks - an array of map containing Spotify URIs of the tracks
-    ///  to remove with their current positions in the playlist.  For example:
-    /// { "tracks": [{ "uri": "spotify:track:4iV5W9uYEdYUVa79Axb7Rh", "positions": [0,3] },{
-    /// "uri": "spotify:track:1301WleyT98MSxVHPZCA6M", "positions": [7] }] }
-    /// - snapshot_id - optional id of the playlist snapshot
-    pub async fn user_playlist_remove_specific_occurrenes_of_tracks(
+    /// - user_id: the id of the user
+    /// - playlist_id: the id of the playlist
+    /// - tracks: an array of map containing Spotify URIs of the tracks to remove
+    /// with their current positions in the playlist. For example:
+    ///
+    /// ```json
+    /// {
+    ///    "tracks":[
+    ///       {
+    ///          "uri":"spotify:track:4iV5W9uYEdYUVa79Axb7Rh",
+    ///          "positions":[
+    ///             0,
+    ///             3
+    ///          ]
+    ///       },
+    ///       {
+    ///          "uri":"spotify:track:1301WleyT98MSxVHPZCA6M",
+    ///          "positions":[
+    ///             7
+    ///          ]
+    ///       }
+    ///    ]
+    /// }
+    /// ```
+    /// - snapshot_id: optional id of the playlist snapshot
+    pub async fn user_playlist_remove_specific_occurrences_of_tracks(
         &self,
         user_id: &str,
         playlist_id: &str,