Moved url parsing methods from utils to standard library

url.go

@@ -0,0 +1,110 @@
+package crunchyroll
+
+import (
+	"fmt"
+)
+
+// ExtractEpisodesFromUrl extracts all episodes from an url.
+// If audio is not empty, the episodes gets filtered after the given locale
+func (c *Crunchyroll) ExtractEpisodesFromUrl(url string, audio ...LOCALE) ([]*Episode, error) {
+	series, episodes, err := c.ParseUrl(url)
+	if err != nil {
+		return nil, err
+	}
+
+	var eps []*Episode
+
+	if series != nil {
+		seasons, err := series.Seasons()
+		if err != nil {
+			return nil, err
+		}
+		for _, season := range seasons {
+			if audio != nil {
+				locale, err := season.AudioLocale()
+				if err != nil {
+					return nil, err
+				}
+
+				var found bool
+				for _, l := range audio {
+					if locale == l {
+						found = true
+						break
+					}
+				}
+				if !found {
+					continue
+				}
+			}
+			e, err := season.Episodes()
+			if err != nil {
+				return nil, err
+			}
+			eps = append(eps, e...)
+		}
+	} else if episodes != nil {
+		if audio == nil {
+			return episodes, nil
+		}
+
+		for _, episode := range episodes {
+			locale, err := episode.AudioLocale()
+			if err != nil {
+				return nil, err
+			}
+			if audio != nil {
+				var found bool
+				for _, l := range audio {
+					if locale == l {
+						found = true
+						break
+					}
+				}
+				if !found {
+					continue
+				}
+			}
+
+			eps = append(eps, episode)
+		}
+	}
+
+	if len(eps) == 0 {
+		return nil, fmt.Errorf("could not find any matching episode")
+	}
+
+	return eps, nil
+}
+
+// ParseUrl parses the given url into a series or episode.
+// The returning episode is a slice because non-beta urls have the same episode with different languages
+func (c *Crunchyroll) ParseUrl(url string) (*Series, []*Episode, error) {
+	if seriesId, ok := ParseBetaSeriesURL(url); ok {
+		series, err := SeriesFromID(c, seriesId)
+		if err != nil {
+			return nil, nil, err
+		}
+		return series, nil, nil
+	} else if episodeId, ok := ParseBetaEpisodeURL(url); ok {
+		episode, err := EpisodeFromID(c, episodeId)
+		if err != nil {
+			return nil, nil, err
+		}
+		return nil, []*Episode{episode}, nil
+	} else if seriesName, ok := ParseVideoURL(url); ok {
+		video, err := c.FindVideoByName(seriesName)
+		if err != nil {
+			return nil, nil, err
+		}
+		return video.(*Series), nil, nil
+	} else if seriesName, title, _, _, ok := ParseEpisodeURL(url); ok {
+		episodes, err := c.FindEpisodeByName(seriesName, title)
+		if err != nil {
+			return nil, nil, err
+		}
+		return nil, episodes, nil
+	} else {
+		return nil, nil, fmt.Errorf("invalid url %s", url)
+	}
+}