Added a builder like struct for the search function (Related with issue )

rspotify-model/src/search.rs

@@ -1,6 +1,7 @@
 //! All object related to search
 
 use serde::{Deserialize, Serialize};
+use strum::Display;
 
 use crate::{
     FullArtist, FullTrack, Page, SimplifiedAlbum, SimplifiedEpisode, SimplifiedPlaylist,
@@ -60,3 +61,20 @@ pub enum SearchResult {
     #[serde(rename = "episodes")]
     Episodes(Page<SimplifiedEpisode>),
 }
+
+/// Valid filters to used in the search endpoint's query string
+#[derive(Debug, Display, PartialEq, Eq, PartialOrd, Ord)]
+#[strum(serialize_all = "snake_case")]
+pub enum SearchFilter {
+    Album,
+    Artist,
+    Track,
+    Year,
+    Upc,
+    #[strum(serialize = "tag:hipster")]
+    TagHipster,
+    #[strum(serialize = "tag:new")]
+    TagNew,
+    Isrc,
+    Genre,
+}

src/clients/base.rs

@@ -436,9 +436,9 @@ where
     ///   relevant audio content that is hosted externally.  
     ///
     /// [Reference](https://developer.spotify.com/documentation/web-api/reference/#/operations/search)
-    async fn search(
+    async fn search<T: Into<String> + Send>(
         &self,
-        q: &str,
+        q: T,
         _type: SearchType,
         market: Option<Market>,
         include_external: Option<IncludeExternal>,
@@ -447,8 +447,9 @@ where
     ) -> ClientResult<SearchResult> {
         let limit = limit.map(|s| s.to_string());
         let offset = offset.map(|s| s.to_string());
+        let q: String = q.into();
         let params = build_map([
-            ("q", Some(q)),
+            ("q", Some(&q)),
             ("type", Some(_type.into())),
             ("market", market.map(Into::into)),
             ("include_external", include_external.map(Into::into)),

src/lib.rs

@@ -125,6 +125,7 @@ mod auth_code;
 mod auth_code_pkce;
 mod client_creds;
 pub mod clients;
+pub mod search;
 pub mod sync;
 mod util;
 

src/search/mod.rs

@@ -0,0 +1,152 @@
+use std::collections::BTreeMap;
+
+use rspotify_model::SearchFilter;
+
+/// Builder used to create search query.
+///
+/// Note that when calling the same function multiple times, the filter will be the text from the
+/// last call
+///
+/// This is converted to the query string using into()
+///
+/// Exemple
+/// ```rust
+/// use rspotify::search::SearchQuery;
+///
+/// SearchQuery::default()
+///     .any("foo")
+///     .album("bar")
+/// // Filter on album containing "bar" and anything containing "foo"
+/// ```
+///
+/// For more information on the different filters, look at the [Soptify
+/// documentation](https://developer.spotify.com/documentation/web-api/reference/#/operations/search)
+#[derive(Debug, Default)]
+pub struct SearchQuery<'a> {
+    no_filter_query: String,
+    query_map: BTreeMap<SearchFilter, &'a str>,
+}
+
+impl<'a> SearchQuery<'a> {
+    /// Basic filter where the given string can be anything
+    pub fn any(&mut self, str: &'a str) -> &mut Self {
+        self.no_filter_query.push_str(str);
+        self.no_filter_query.push(' ');
+        self
+    }
+
+    pub fn album(&mut self, str: &'a str) -> &mut Self {
+        self.query_map.insert(SearchFilter::Album, str);
+        self
+    }
+
+    pub fn artist(&mut self, str: &'a str) -> &mut Self {
+        self.query_map.insert(SearchFilter::Artist, str);
+        self
+    }
+
+    pub fn track(&mut self, str: &'a str) -> &mut Self {
+        self.query_map.insert(SearchFilter::Track, str);
+        self
+    }
+
+    pub fn year(&mut self, str: &'a str) -> &mut Self {
+        self.query_map.insert(SearchFilter::Year, str);
+        self
+    }
+
+    pub fn upc(&mut self, str: &'a str) -> &mut Self {
+        self.query_map.insert(SearchFilter::Upc, str);
+        self
+    }
+
+    pub fn tag_new(&mut self) -> &mut Self {
+        self.query_map.insert(SearchFilter::TagNew, "");
+        self
+    }
+
+    pub fn tag_hipster(&mut self) -> &mut Self {
+        self.query_map.insert(SearchFilter::TagHipster, "");
+        self
+    }
+
+    pub fn isrc(&mut self, str: &'a str) -> &mut Self {
+        self.query_map.insert(SearchFilter::Isrc, str);
+        self
+    }
+
+    pub fn genre(&mut self, str: &'a str) -> &mut Self {
+        self.query_map.insert(SearchFilter::Genre, str);
+        self
+    }
+}
+
+impl From<&SearchQuery<'_>> for String {
+    fn from(val: &SearchQuery) -> Self {
+        let mut rep = val.no_filter_query.clone();
+
+        if val.query_map.is_empty() {
+            return rep;
+        }
+
+        rep.push_str(
+            val.query_map
+                .iter()
+                .map(|entry| match entry.0 {
+                    SearchFilter::TagNew | SearchFilter::TagHipster => format!("{} ", entry.0),
+                    _ => format!("{}:{} ", entry.0, entry.1),
+                })
+                .collect::<String>()
+                .trim(),
+        );
+
+        rep
+    }
+}
+
+impl From<&mut SearchQuery<'_>> for String {
+    fn from(val: &mut SearchQuery) -> Self {
+        String::from(&(*val))
+    }
+}
+
+impl From<SearchQuery<'_>> for String {
+    fn from(val: SearchQuery) -> Self {
+        String::from(&val)
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use super::SearchQuery;
+
+    #[test]
+    fn test_search_query() {
+        let query: String = SearchQuery::default()
+            .any("foo")
+            .any("bar")
+            .album("wrong album")
+            .album("arrival")
+            .artist("abba")
+            .tag_new()
+            .tag_hipster()
+            .track("foo")
+            .year("2020")
+            .upc("bar")
+            .isrc("foo")
+            .genre("metal")
+            .into();
+
+        let expected = "foo bar album:arrival artist:abba track:foo year:2020 upc:bar \
+                        tag:hipster tag:new isrc:foo genre:metal";
+
+        assert_eq!(expected, query);
+    }
+
+    #[test]
+    fn test_empty_query() {
+        let query: String = SearchQuery::default().into();
+
+        assert_eq!(query, "");
+    }
+}

tests/test_with_oauth.rs

@@ -23,7 +23,9 @@ use rspotify::{
         SearchType, ShowId, TimeLimits, TimeRange, TrackId, UserId,
     },
     prelude::*,
-    scopes, AuthCodeSpotify, ClientResult, Credentials, OAuth, Token,
+    scopes,
+    search::SearchQuery,
+    AuthCodeSpotify, ClientResult, Credentials, OAuth, Token,
 };
 
 use std::env;
@@ -444,10 +446,16 @@ async fn test_repeat() {
 #[maybe_async::test(feature = "__sync", async(feature = "__async", tokio::test))]
 #[ignore]
 async fn test_search_album() {
-    let query = "album:arrival artist:abba";
     oauth_client()
         .await
-        .search(query, SearchType::Album, None, None, Some(10), Some(0))
+        .search(
+            SearchQuery::default().album("arrival").artist("abba"),
+            SearchType::Album,
+            None,
+            None,
+            Some(10),
+            Some(0),
+        )
         .await
         .unwrap();
 }