fix: api language query parameter (#3720)

server/routes/discover.ts

@@ -164,7 +164,7 @@ discoverRoutes.get<{ language: string }>(
 
       const data = await tmdb.getDiscoverMovies({
         page: Number(req.query.page),
-        language: req.locale ?? (req.query.language as string),
+        language: (req.query.language as string) ?? req.locale,
         originalLanguage: req.params.language,
       });
 
@@ -208,7 +208,7 @@ discoverRoutes.get<{ genreId: string }>(
 
     try {
       const genres = await tmdb.getMovieGenres({
-        language: req.locale ?? (req.query.language as string),
+        language: (req.query.language as string) ?? req.locale,
       });
 
       const genre = genres.find(
@@ -221,7 +221,7 @@ discoverRoutes.get<{ genreId: string }>(
 
       const data = await tmdb.getDiscoverMovies({
         page: Number(req.query.page),
-        language: req.locale ?? (req.query.language as string),
+        language: (req.query.language as string) ?? req.locale,
         genre: req.params.genreId as string,
       });
 
@@ -268,7 +268,7 @@ discoverRoutes.get<{ studioId: string }>(
 
       const data = await tmdb.getDiscoverMovies({
         page: Number(req.query.page),
-        language: req.locale ?? (req.query.language as string),
+        language: (req.query.language as string) ?? req.locale,
         studio: req.params.studioId as string,
       });
 
@@ -317,7 +317,7 @@ discoverRoutes.get('/movies/upcoming', async (req, res, next) => {
   try {
     const data = await tmdb.getDiscoverMovies({
       page: Number(req.query.page),
-      language: req.locale ?? (req.query.language as string),
+      language: (req.query.language as string) ?? req.locale,
       primaryReleaseDateGte: date,
     });
 
@@ -440,7 +440,7 @@ discoverRoutes.get<{ language: string }>(
 
       const data = await tmdb.getDiscoverTv({
         page: Number(req.query.page),
-        language: req.locale ?? (req.query.language as string),
+        language: (req.query.language as string) ?? req.locale,
         originalLanguage: req.params.language,
       });
 
@@ -484,7 +484,7 @@ discoverRoutes.get<{ genreId: string }>(
 
     try {
       const genres = await tmdb.getTvGenres({
-        language: req.locale ?? (req.query.language as string),
+        language: (req.query.language as string) ?? req.locale,
       });
 
       const genre = genres.find(
@@ -497,7 +497,7 @@ discoverRoutes.get<{ genreId: string }>(
 
       const data = await tmdb.getDiscoverTv({
         page: Number(req.query.page),
-        language: req.locale ?? (req.query.language as string),
+        language: (req.query.language as string) ?? req.locale,
         genre: req.params.genreId,
       });
 
@@ -544,7 +544,7 @@ discoverRoutes.get<{ networkId: string }>(
 
       const data = await tmdb.getDiscoverTv({
         page: Number(req.query.page),
-        language: req.locale ?? (req.query.language as string),
+        language: (req.query.language as string) ?? req.locale,
         network: Number(req.params.networkId),
       });
 
@@ -593,7 +593,7 @@ discoverRoutes.get('/tv/upcoming', async (req, res, next) => {
   try {
     const data = await tmdb.getDiscoverTv({
       page: Number(req.query.page),
-      language: req.locale ?? (req.query.language as string),
+      language: (req.query.language as string) ?? req.locale,
       firstAirDateGte: date,
     });
 
@@ -632,7 +632,7 @@ discoverRoutes.get('/trending', async (req, res, next) => {
   try {
     const data = await tmdb.getAllTrending({
       page: Number(req.query.page),
-      language: req.locale ?? (req.query.language as string),
+      language: (req.query.language as string) ?? req.locale,
     });
 
     const media = await Media.getRelatedMedia(
@@ -686,7 +686,7 @@ discoverRoutes.get<{ keywordId: string }>(
       const data = await tmdb.getMoviesByKeyword({
         keywordId: Number(req.params.keywordId),
         page: Number(req.query.page),
-        language: req.locale ?? (req.query.language as string),
+        language: (req.query.language as string) ?? req.locale,
       });
 
       const media = await Media.getRelatedMedia(
@@ -730,7 +730,7 @@ discoverRoutes.get<{ language: string }, GenreSliderItem[]>(
       const mappedGenres: GenreSliderItem[] = [];
 
       const genres = await tmdb.getMovieGenres({
-        language: req.locale ?? (req.query.language as string),
+        language: (req.query.language as string) ?? req.locale,
       });
 
       await Promise.all(
@@ -774,7 +774,7 @@ discoverRoutes.get<{ language: string }, GenreSliderItem[]>(
       const mappedGenres: GenreSliderItem[] = [];
 
       const genres = await tmdb.getTvGenres({
-        language: req.locale ?? (req.query.language as string),
+        language: (req.query.language as string) ?? req.locale,
       });
 
       await Promise.all(