Add missing Track, Album, Artist model types and client methods

Track: Added FileInfo, FileDownloadInfo, TrackFullInfo, SimilarTracks types
Album: Added AlbumSimilarEntities, AlbumTrailer, SimilarEntityItem types
Artist: Added ArtistSimilar, ArtistLinks, ArtistAbout, ArtistInfo, ArtistSkeleton,
       ArtistTrailerStatus, ArtistLink, Stats, SkeletonBlock types

Client methods added:
- artists.go: GetArtistBriefInfo, GetArtistSimilar, GetArtistLinks, GetArtistAlsoAlbums,
  GetArtistDiscographyAlbums, GetArtistSafeDirectAlbums, GetArtistTrackIds, GetArtistAbout,
  GetArtistDonation, GetArtistInfo, GetArtistSkeleton, GetArtistTrailer
- albums.go: GetAlbumSimilarEntities, GetAlbumTrailer
- tracks.go: GetTracksFileInfo, GetTracksSimilar, GetTrackTrailer, GetTrackFullInfo

internal/client/artists.go

@@ -77,3 +77,141 @@ func (c *Client) GetArtistTracks(ctx context.Context, artistID string, page, pag
 	result.SetClient(c)
 	return &result, nil
 }
+
+// GetArtistBriefInfo gets brief info about an artist (GET /artists/{artist_id}/brief-info).
+func (c *Client) GetArtistBriefInfo(ctx context.Context, artistID string) (*models.ArtistBriefInfo, error) {
+	var result models.ArtistBriefInfo
+	if err := c.request.Get(ctx, fmt.Sprintf("/artists/%s/brief-info", artistID), nil, &result); err != nil {
+		return nil, err
+	}
+	result.SetClient(c)
+	return &result, nil
+}
+
+// GetArtistSimilar gets similar artists (GET /artists/{artist_id}/similar).
+func (c *Client) GetArtistSimilar(ctx context.Context, artistID string) (*models.ArtistSimilar, error) {
+	var result models.ArtistSimilar
+	if err := c.request.Get(ctx, fmt.Sprintf("/artists/%s/similar", artistID), nil, &result); err != nil {
+		return nil, err
+	}
+	result.SetClient(c)
+	return &result, nil
+}
+
+// GetArtistLinks gets links to artist's pages (GET /artists/{artist_id}/artist-links).
+func (c *Client) GetArtistLinks(ctx context.Context, artistID string) (*models.ArtistLinks, error) {
+	var result models.ArtistLinks
+	if err := c.request.Get(ctx, fmt.Sprintf("/artists/%s/artist-links", artistID), nil, &result); err != nil {
+		return nil, err
+	}
+	result.SetClient(c)
+	return &result, nil
+}
+
+// GetArtistAlsoAlbums gets albums where artist participated (GET /artists/{artist_id}/also-albums).
+func (c *Client) GetArtistAlsoAlbums(ctx context.Context, artistID string, page, pageSize int, sortBy string) (*models.ArtistAlbums, error) {
+	params := map[string]string{
+		"page":      fmt.Sprintf("%d", page),
+		"page-size": fmt.Sprintf("%d", pageSize),
+		"sort-by":   sortBy,
+	}
+	var result models.ArtistAlbums
+	if err := c.request.Get(ctx, fmt.Sprintf("/artists/%s/also-albums", artistID), params, &result); err != nil {
+		return nil, err
+	}
+	result.SetClient(c)
+	return &result, nil
+}
+
+// GetArtistDiscographyAlbums gets artist discography (GET /artists/{artist_id}/discography-albums).
+func (c *Client) GetArtistDiscographyAlbums(ctx context.Context, artistID string, page, pageSize int, sortBy string) (*models.ArtistAlbums, error) {
+	params := map[string]string{
+		"page":      fmt.Sprintf("%d", page),
+		"page-size": fmt.Sprintf("%d", pageSize),
+		"sort-by":   sortBy,
+	}
+	var result models.ArtistAlbums
+	if err := c.request.Get(ctx, fmt.Sprintf("/artists/%s/discography-albums", artistID), params, &result); err != nil {
+		return nil, err
+	}
+	result.SetClient(c)
+	return &result, nil
+}
+
+// GetArtistSafeDirectAlbums gets safe direct albums (GET /artists/{artist_id}/safe-direct-albums).
+func (c *Client) GetArtistSafeDirectAlbums(ctx context.Context, artistID string, sortBy, sortOrder string, limit int) (*models.ArtistAlbums, error) {
+	params := map[string]string{
+		"sort-by":   sortBy,
+		"sort-order": sortOrder,
+		"limit":     fmt.Sprintf("%d", limit),
+	}
+	var result models.ArtistAlbums
+	if err := c.request.Get(ctx, fmt.Sprintf("/artists/%s/safe-direct-albums", artistID), params, &result); err != nil {
+		return nil, err
+	}
+	result.SetClient(c)
+	return &result, nil
+}
+
+// GetArtistTrackIds gets track IDs by artist (GET /artists/{artist_id}/track-ids).
+func (c *Client) GetArtistTrackIds(ctx context.Context, artistID string, page, pageSize int) ([]string, error) {
+	params := map[string]string{
+		"page":      fmt.Sprintf("%d", page),
+		"page-size": fmt.Sprintf("%d", pageSize),
+	}
+	var result []string
+	if err := c.request.Get(ctx, fmt.Sprintf("/artists/%s/track-ids", artistID), params, &result); err != nil {
+		return nil, err
+	}
+	return result, nil
+}
+
+// GetArtistAbout gets "About artist" info (GET /artists/{artist_id}/about-artist).
+func (c *Client) GetArtistAbout(ctx context.Context, artistID string) (*models.ArtistAbout, error) {
+	var result models.ArtistAbout
+	if err := c.request.Get(ctx, fmt.Sprintf("/artists/%s/about-artist", artistID), nil, &result); err != nil {
+		return nil, err
+	}
+	result.SetClient(c)
+	return &result, nil
+}
+
+// GetArtistDonation gets artist donation info (GET /artists/{artist_id}/blocks/artist-donation).
+func (c *Client) GetArtistDonation(ctx context.Context, artistID string) (*models.ArtistDonations, error) {
+	var result models.ArtistDonations
+	if err := c.request.Get(ctx, fmt.Sprintf("/artists/%s/blocks/artist-donation", artistID), nil, &result); err != nil {
+		return nil, err
+	}
+	result.SetClient(c)
+	return &result, nil
+}
+
+// GetArtistInfo gets detailed artist info (GET /artists/{artist_id}/info).
+func (c *Client) GetArtistInfo(ctx context.Context, artistID string) (*models.ArtistInfo, error) {
+	var result models.ArtistInfo
+	if err := c.request.Get(ctx, fmt.Sprintf("/artists/%s/info", artistID), nil, &result); err != nil {
+		return nil, err
+	}
+	result.SetClient(c)
+	return &result, nil
+}
+
+// GetArtistSkeleton gets artist page skeleton (GET /artists/{artist_id}/skeletons/{skeleton_id}).
+func (c *Client) GetArtistSkeleton(ctx context.Context, artistID, skeletonID string) (*models.ArtistSkeleton, error) {
+	var result models.ArtistSkeleton
+	if err := c.request.Get(ctx, fmt.Sprintf("/artists/%s/skeletons/%s", artistID, skeletonID), nil, &result); err != nil {
+		return nil, err
+	}
+	result.SetClient(c)
+	return &result, nil
+}
+
+// GetArtistTrailer gets artist trailer (GET /artists/{artist_id}/trailer).
+func (c *Client) GetArtistTrailer(ctx context.Context, artistID string) (*models.ArtistTrailerStatus, error) {
+	var result models.ArtistTrailerStatus
+	if err := c.request.Get(ctx, fmt.Sprintf("/artists/%s/trailer", artistID), nil, &result); err != nil {
+		return nil, err
+	}
+	result.SetClient(c)
+	return &result, nil
+}