Complete support for paging

examples/musicbrainz_api/browse.rs

@@ -3,7 +3,7 @@ use std::{thread, time};
 use musichoard::{
     collection::musicbrainz::Mbid,
     external::musicbrainz::{
-        api::{browse::BrowseReleaseGroupRequest, MusicBrainzClient, PageSettings},
+        api::{browse::BrowseReleaseGroupRequest, MusicBrainzClient, NextPage, PageSettings},
         http::MusicBrainzHttp,
     },
 };
@@ -66,20 +66,19 @@ fn main() {
                         println!("{rg:?}\n");
                     }
 
-                    let offset = response.release_group_offset;
+                    let offset = response.page.release_group_offset;
                     let count = response.release_groups.len();
                     response_counts.push(count);
-                    let total = response.release_group_count;
+                    let total = response.page.release_group_count;
 
                     println!("Release group offset           : {offset}");
                     println!("Release groups in this response: {count}");
                     println!("Release groups in total        : {total}");
 
-                    let next_offset = offset + count;
+                    match response.page.next_page_offset(count) {
-                    if next_offset == total {
+                        NextPage::Offset(next_offset) => paging.with_offset(next_offset),
-                        break;
+                        NextPage::Complete => break,
                     }
-                    paging.with_offset(next_offset);
 
                     thread::sleep(time::Duration::from_secs(1));
                 }

src/external/musicbrainz/api/browse.rs

@@ -6,14 +6,31 @@ use crate::{
     collection::musicbrainz::Mbid,
     external::musicbrainz::{
         api::{
-            Error, MbReleaseGroupMeta, MusicBrainzClient, PageSettings, SerdeMbReleaseGroupMeta,
+            ApiDisplay, Error, MbReleaseGroupMeta, MusicBrainzClient, NextPage, PageSettings,
-            MB_BASE_URL,
+            SerdeMbReleaseGroupMeta, MB_BASE_URL,
         },
         IMusicBrainzHttp,
     },
 };
 
-use super::ApiDisplay;
+#[derive(Clone, Copy, Debug, Deserialize, PartialEq, Eq)]
+#[serde(rename_all(deserialize = "kebab-case"))]
+pub struct BrowseReleaseGroupPage {
+    pub release_group_offset: usize,
+    pub release_group_count: usize,
+}
+
+impl BrowseReleaseGroupPage {
+    pub fn next_page_offset(&self, page_count: usize) -> NextPage {
+        NextPage::next_page_offset(
+            self.release_group_offset,
+            self.release_group_count,
+            page_count,
+        )
+    }
+}
+
+pub type SerdeBrowseReleaseGroupPage = BrowseReleaseGroupPage;
 
 impl<Http: IMusicBrainzHttp> MusicBrainzClient<Http> {
     pub fn browse_release_group(
@@ -60,24 +77,22 @@ impl<'a> BrowseReleaseGroupRequest<'a> {
 
 #[derive(Debug, PartialEq, Eq)]
 pub struct BrowseReleaseGroupResponse {
-    pub release_group_offset: usize,
-    pub release_group_count: usize,
     pub release_groups: Vec<MbReleaseGroupMeta>,
+    pub page: BrowseReleaseGroupPage,
 }
 
 #[derive(Clone, Deserialize)]
 #[serde(rename_all(deserialize = "kebab-case"))]
 struct DeserializeBrowseReleaseGroupResponse {
-    release_group_offset: usize,
-    release_group_count: usize,
     release_groups: Option<Vec<SerdeMbReleaseGroupMeta>>,
+    #[serde(flatten)]
+    page: SerdeBrowseReleaseGroupPage,
 }
 
 impl From<DeserializeBrowseReleaseGroupResponse> for BrowseReleaseGroupResponse {
     fn from(value: DeserializeBrowseReleaseGroupResponse) -> Self {
         BrowseReleaseGroupResponse {
-            release_group_offset: value.release_group_offset,
+            page: value.page,
-            release_group_count: value.release_group_count,
             release_groups: value
                 .release_groups
                 .map(|rgs| rgs.into_iter().map(Into::into).collect())
@@ -120,14 +135,15 @@ mod tests {
             )]),
         };
         let de_response = DeserializeBrowseReleaseGroupResponse {
+            page: SerdeBrowseReleaseGroupPage {
                 release_group_offset: de_release_group_offset,
                 release_group_count: de_release_group_count,
+            },
             release_groups: Some(vec![de_meta.clone()]),
         };
 
         let response = BrowseReleaseGroupResponse {
-            release_group_offset: de_release_group_offset,
+            page: de_response.page,
-            release_group_count: de_release_group_count,
             release_groups: vec![de_meta.clone().into()],
         };
 

src/external/musicbrainz/api/mod.rs

@@ -84,6 +84,22 @@ impl PageSettings {
     }
 }
 
+pub enum NextPage {
+    Offset(usize),
+    Complete,
+}
+
+impl NextPage {
+    pub fn next_page_offset(offset: usize, total_count: usize, page_count: usize) -> NextPage {
+        let next_offset = offset + page_count;
+        if next_offset < total_count {
+            NextPage::Offset(next_offset)
+        } else {
+            NextPage::Complete
+        }
+    }
+}
+
 #[derive(Clone, Debug, PartialEq, Eq)]
 pub struct MbArtistMeta {
     pub id: Mbid,

src/external/musicbrainz/api/search/artist.rs

@@ -3,7 +3,10 @@ use std::fmt;
 use serde::Deserialize;
 
 use crate::external::musicbrainz::api::{
-    search::query::{impl_term, EmptyQuery, EmptyQueryJoin, Query, QueryJoin},
+    search::{
+        query::{impl_term, EmptyQuery, EmptyQueryJoin, Query, QueryJoin},
+        SearchPage, SerdeSearchPage,
+    },
     MbArtistMeta, SerdeMbArtistMeta,
 };
 
@@ -26,18 +29,22 @@ impl_term!(string, SearchArtist<'a>, String, &'a str);
 #[derive(Debug, PartialEq, Eq)]
 pub struct SearchArtistResponse {
     pub artists: Vec<SearchArtistResponseArtist>,
+    pub page: SearchPage,
 }
 
 #[derive(Clone, Deserialize)]
 #[serde(rename_all(deserialize = "kebab-case"))]
 pub struct DeserializeSearchArtistResponse {
     artists: Vec<DeserializeSearchArtistResponseArtist>,
+    #[serde(flatten)]
+    page: SerdeSearchPage,
 }
 
 impl From<DeserializeSearchArtistResponse> for SearchArtistResponse {
     fn from(value: DeserializeSearchArtistResponse) -> Self {
         SearchArtistResponse {
             artists: value.artists.into_iter().map(Into::into).collect(),
+            page: value.page,
         }
     }
 }
@@ -77,6 +84,8 @@ mod tests {
     use super::*;
 
     fn de_response() -> DeserializeSearchArtistResponse {
+        let de_offset = 24;
+        let de_count = 124;
         let de_artist = DeserializeSearchArtistResponseArtist {
             score: 67,
             meta: SerdeMbArtistMeta {
@@ -88,6 +97,10 @@ mod tests {
         };
         DeserializeSearchArtistResponse {
             artists: vec![de_artist.clone()],
+            page: SerdeSearchPage {
+                offset: de_offset,
+                count: de_count,
+            },
         }
     }
 
@@ -101,6 +114,7 @@ mod tests {
                     meta: a.meta.into(),
                 })
                 .collect(),
+            page: de_response.page,
         }
     }
 

src/external/musicbrainz/api/search/mod.rs

@@ -9,6 +9,7 @@ pub use release_group::{
 };
 
 use paste::paste;
+use serde::Deserialize;
 use url::form_urlencoded;
 
 use crate::external::musicbrainz::{
@@ -22,6 +23,23 @@ use crate::external::musicbrainz::{
     IMusicBrainzHttp,
 };
 
+use super::NextPage;
+
+#[derive(Clone, Copy, Debug, Deserialize, PartialEq, Eq)]
+#[serde(rename_all(deserialize = "kebab-case"))]
+pub struct SearchPage {
+    pub offset: usize,
+    pub count: usize,
+}
+
+impl SearchPage {
+    pub fn next_page_offset(&self, page_count: usize) -> NextPage {
+        NextPage::next_page_offset(self.offset, self.count, page_count)
+    }
+}
+
+pub type SerdeSearchPage = SearchPage;
+
 macro_rules! impl_search_entity {
     ($name:ident, $entity:literal) => {
         paste! {

src/external/musicbrainz/api/search/release_group.rs

@@ -5,7 +5,10 @@ use serde::Deserialize;
 use crate::{
     collection::{album::AlbumDate, musicbrainz::Mbid},
     external::musicbrainz::api::{
-        search::query::{impl_term, EmptyQuery, EmptyQueryJoin, Query, QueryJoin},
+        search::{
+            query::{impl_term, EmptyQuery, EmptyQueryJoin, Query, QueryJoin},
+            SearchPage, SerdeSearchPage,
+        },
         ApiDisplay, MbReleaseGroupMeta, SerdeMbReleaseGroupMeta,
     },
 };
@@ -50,18 +53,22 @@ impl_term!(rgid, SearchReleaseGroup<'a>, Rgid, &'a Mbid);
 #[derive(Debug, PartialEq, Eq)]
 pub struct SearchReleaseGroupResponse {
     pub release_groups: Vec<SearchReleaseGroupResponseReleaseGroup>,
+    pub page: SearchPage,
 }
 
 #[derive(Clone, Deserialize)]
 #[serde(rename_all(deserialize = "kebab-case"))]
 pub struct DeserializeSearchReleaseGroupResponse {
     release_groups: Vec<DeserializeSearchReleaseGroupResponseReleaseGroup>,
+    #[serde(flatten)]
+    page: SerdeSearchPage,
 }
 
 impl From<DeserializeSearchReleaseGroupResponse> for SearchReleaseGroupResponse {
     fn from(value: DeserializeSearchReleaseGroupResponse) -> Self {
         SearchReleaseGroupResponse {
             release_groups: value.release_groups.into_iter().map(Into::into).collect(),
+            page: value.page,
         }
     }
 }
@@ -109,6 +116,8 @@ mod tests {
     use super::*;
 
     fn de_response() -> DeserializeSearchReleaseGroupResponse {
+        let de_offset = 26;
+        let de_count = 126;
         let de_release_group = DeserializeSearchReleaseGroupResponseReleaseGroup {
             score: 67,
             meta: SerdeMbReleaseGroupMeta {
@@ -121,6 +130,10 @@ mod tests {
         };
         DeserializeSearchReleaseGroupResponse {
             release_groups: vec![de_release_group.clone()],
+            page: SerdeSearchPage {
+                offset: de_offset,
+                count: de_count,
+            },
         }
     }
 
@@ -134,6 +147,7 @@ mod tests {
                     meta: rg.meta.into(),
                 })
                 .collect(),
+            page: de_response.page,
         }
     }
 

src/tui/lib/external/musicbrainz/api/mod.rs

@@ -57,7 +57,7 @@ impl<Http: IMusicBrainzHttp> IMusicBrainz for MusicBrainz<Http> {
     fn search_artist(&mut self, artist: &ArtistMeta) -> Result<Vec<Match<ArtistMeta>>, Error> {
         let query = SearchArtistRequest::new().string(&artist.id.name);
 
-        let paging = PageSettings::with_max_limit();
+        let paging = PageSettings::default();
         let mb_response = self.client.search_artist(&query, &paging)?;
 
         Ok(mb_response
@@ -83,7 +83,7 @@ impl<Http: IMusicBrainzHttp> IMusicBrainz for MusicBrainz<Http> {
             .and()
             .release_group(&album.id.title);
 
-        let paging = PageSettings::with_max_limit();
+        let paging = PageSettings::default();
         let mb_response = self.client.search_release_group(&query, &paging)?;
 
         Ok(mb_response