fix(meta,api): detail ratings are optional too

crates/arr-meta/src/model.rs

@@ -223,7 +223,10 @@ pub struct MovieDetail {
     pub genres: Vec<Genre>,
     pub backdrop_path: Option<String>,
     pub poster_path: Option<String>,
-    pub vote_average: f64,
+    /// Zero normalised away, like [`Movie::vote_average`]: TMDB sends `0`
+    /// where "no votes yet" is meant, and a detail page must not show it as
+    /// a rating.
+    pub vote_average: Option<f64>,
     pub vote_count: u32,
     pub homepage: Option<String>,
     pub status: String,
@@ -244,7 +247,10 @@ pub struct SeriesDetail {
     pub genres: Vec<Genre>,
     pub backdrop_path: Option<String>,
     pub poster_path: Option<String>,
-    pub vote_average: f64,
+    /// Zero normalised away, like [`Movie::vote_average`]: TMDB sends `0`
+    /// where "no votes yet" is meant, and a detail page must not show it as
+    /// a rating.
+    pub vote_average: Option<f64>,
     pub vote_count: u32,
     pub homepage: Option<String>,
     pub status: String,
@@ -771,7 +777,7 @@ impl From<RawMovieDetail> for MovieDetail {
                 .collect(),
             backdrop_path: non_empty(raw.backdrop_path),
             poster_path: non_empty(raw.poster_path),
-            vote_average: raw.vote_average,
+            vote_average: rating(raw.vote_average),
             vote_count: raw.vote_count,
             homepage: non_empty(raw.homepage),
             status: raw.status,
@@ -799,7 +805,7 @@ impl From<RawSeriesDetail> for SeriesDetail {
                 .collect(),
             backdrop_path: non_empty(raw.backdrop_path),
             poster_path: non_empty(raw.poster_path),
-            vote_average: raw.vote_average,
+            vote_average: rating(raw.vote_average),
             vote_count: raw.vote_count,
             homepage: non_empty(raw.homepage),
             status: raw.status,