MusicLibrary.swift

import Foundation
import MediaPlayer

@objc(MusicLibrary) class MusicLibrary : CDVPlugin {
    
    func getAlbums(_ command: CDVInvokedUrlCommand) {
        let albumItems = MPMediaQuery.albums().items as [MPMediaItem]?
        
        if albumItems == nil {
            let result = CDVPluginResult(status: CDVCommandStatus_OK, messageAs: [])
            self.commandDelegate!.send(result, callbackId: command.callbackId)
            
            return
        }
        
        var albums: [Dictionary<String, Any>] = []
        
        for songItem in albumItems! {
            var data = Dictionary<String, Any>()
            
            // Media Item Properties
            // https://developer.apple.com/documentation/mediaplayer/mpmediaitem
            
            // var albumArtist: String?
            // The primary performing artist for an album as a whole.
            data["albumArtist"] = songItem.albumArtist ?? ""
            
            // var albumArtistPersistentID: MPMediaEntityPersistentID
            // The persistent identifier for the primary performing artist for an album as a whole.
            data["albumArtistPersistentID"] = songItem.albumArtistPersistentID
            
            // var albumPersistentID: MPMediaEntityPersistentID
            // The persistent identifier for an album.
            data["albumPersistentID"] = songItem.albumPersistentID
            
            // var albumTitle: String?
            // The title of an album, such as “Live On Mars”, as opposed to the title of an individual song on the album, such as “Crater Dance (radio edit)”.
            data["title"] = songItem.title ?? ""
            
            // var albumTrackCount: Int
            // The number of tracks in the album that contains the media item.
            data["albumTrackCount"] = songItem.albumTrackCount
            
            // var albumTrackNumber: Int
            // The track number of the media item, for a media item that is part of an album.
            data["albumTrackNumber"] = songItem.albumTrackNumber
            
            // var artist: String?
            // The performing artist(s) for a media item—which may vary from the primary artist for the album that a media item belongs to.
            data["artist"] = songItem.artist ?? ""
            
            // var artistPersistentID: MPMediaEntityPersistentID
            // The persistent identifier for an artist.
            data["artistPersistentID"] = songItem.artistPersistentID
            
            // var artwork: MPMediaItemArtwork?
            // The artwork image for the media item.
            data["artwork"] = {
                if songItem.artwork == nil { return "" }
                
                let image = songItem.artwork!.image(at: /* CGSize(width: 100, height: 100) */ songItem.artwork!.bounds.size)
                if image == nil { return "" }
                
                let png = UIImagePNGRepresentation(image!)
                if png == nil { return "" }
                
                return png!.base64EncodedString()
            }()
            
            // var assetURL: URL?
            // The URL pointing to the media item.
            data["assetURL"] = songItem.assetURL != nil ? songItem.assetURL!.absoluteString : ""
            
            // var beatsPerMinute: Int
            // The number of musical beats per minute for the media item.
            data["beatsPerMinute"] = songItem.beatsPerMinute
            
            // var bookmarkTime: TimeInterval (Alias Double)
            // The user’s place in the media item the most recent time it was played.
            data["bookmarkTime"] = songItem.bookmarkTime
            
            // var isCloudItem: Bool
            // A Boolean value indicating whether the media item is an iCloud Music Library item.
            data["isCloudItem"] = songItem.isCloudItem
            
            // var comments: String?
            // Textual information about the media item.
            data["comments"] = songItem.comments ?? ""
            
            // var isCompilation: Bool
            // A Boolean value indicating whether the media item is part of a compilation.
            data["isCompilation"] = songItem.isCompilation
            
            // var composer: String?
            // The musical composer for the media item.
            data["composer"] = songItem.composer ?? ""
            
            // var composerPersistentID: MPMediaEntityPersistentID
            // The persistent identifier for a composer.
            data["composerPersistentID"] = songItem.composerPersistentID
            
            // var dateAdded: Date
            // The date the item was added to the library.
            data["dateAdded"] = songItem.dateAdded.timeIntervalSince1970
            
            // var discCount: Int
            // The number of discs in the album that contains the media item.
            data["discCount"] = songItem.discCount
            
            // var discNumber: Int
            // The disc number of the media item, for a media item that is part of a multi-disc album.
            data["discNumber"] = songItem.discNumber
            
            // var isExplicitItem: Bool
            // A Boolean value that indicates whether the item has explicit (adult) lyrics or language.
            data["isExplicitItem"] = songItem.isExplicitItem
            
            // var genre: String?
            // The musical or film genre of the media item.
            data["genre"] = songItem.genre ?? ""
            
            // var genrePersistentID: MPMediaEntityPersistentID
            // The persistent identifier for a genre.
            data["genrePersistentID"] = songItem.genrePersistentID
            
            // var lastPlayedDate: Date?
            // The date a media item was last played.
            data["lastPlayedDate"] = songItem.lastPlayedDate != nil ? songItem.lastPlayedDate!.timeIntervalSince1970 : 0
            
            // var lyrics: String?
            // The lyrics for the media item.
            data["lyrics"] = songItem.lyrics ?? "" as String
            
            // var mediaType: MPMediaType
            // The media type of the media item.
            data["mediaType"] = {
                switch songItem.mediaType {
                    // Audio
                    
                case MPMediaType.music:
                    return "music"
                case MPMediaType.podcast:
                    return "podcast"
                case MPMediaType.audioBook:
                    return "audioBook"
                case MPMediaType.audioITunesU:
                    return "audioITunesU"
                case MPMediaType.anyAudio:
                    return "anyAudio"
                    
                    // Video
                    
                case MPMediaType.movie:
                    return "movie"
                case MPMediaType.tvShow:
                    return "tvShow"
                case MPMediaType.videoPodcast:
                    return "videoPodcast"
                case MPMediaType.musicVideo:
                    return "musicVideo"
                case MPMediaType.videoITunesU:
                    return "videoITunesU"
                case MPMediaType.homeVideo:
                    return "homeVideo"
                case MPMediaType.anyVideo:
                    return "anyVideo"
                    
                    // Any
                    
                default:
                    return "any"
                }
            }()
            
            // var persistentID: MPMediaEntityPersistentID (Alias UInt64)
            // The persistent identifier for the media item.
            data["persistentID"] = songItem.persistentID
            
            // var playCount: Int
            // The number of times the user has played the media item.
            data["playCount"] = songItem.playCount
            
            // var playbackDuration: TimeInterval
            // The playback duration of the media item.
            data["playbackDuration"] = songItem.playbackDuration
            
            // var playbackStoreID: String
            // The non-library identifier for a media item.
            data["playbackStoreID"] = songItem.playbackStoreID
            
            // var podcastPersistentID: MPMediaEntityPersistentID
            // The persistent identifier for an audio podcast.
            data["podcastPersistentID"] = songItem.podcastPersistentID
            
            // var podcastTitle: String?
            // The title of a podcast, such as “This Martian Drudgery”, as opposed to the title of an individual episode of a podcast such as “Episode 12: Another Cold Day At The Pole”.
            data["podcastTitle"] = songItem.podcastTitle ?? ""
            
            // var hasProtectedAsset: Bool
            // A Boolean indicating whether the media item has a protected asset.
            data["hasProtectedAsset"] = songItem.hasProtectedAsset
            
            // var rating: Int
            // The user-specified rating of the object in the range [0...5], where a value of 5 indicates the most favorable rating.
            data["rating"] = songItem.rating
            
            // var releaseDate: Date?
            // The date on which the media item was first publicly released.
            data["releaseDate"] = songItem.releaseDate != nil ? songItem.releaseDate!.timeIntervalSince1970 : 0
            
            // var skipCount: Int
            // The number of times the user has skipped playing the item.
            data["skipCount"] = songItem.skipCount
            
            // var title: String?
            // The title (or name) of the media item.
            data["title"] = songItem.title ?? ""
            
            // var userGrouping: String?
            // Grouping information for the media item.
            data["userGrouping"] = songItem.userGrouping ?? ""
            
            // Output
            
            songs.append( data )
        }
        
        let result = CDVPluginResult(status: CDVCommandStatus_OK, messageAs: albumItems)
        self.commandDelegate!.send(result, callbackId: command.callbackId)
    }

    func getAll(_ command: CDVInvokedUrlCommand) {
        let songItems: [MPMediaItem] = MPMediaQuery.songs().items! as [MPMediaItem]
        var songs: [Dictionary<String, Any>] = []
        
        for songItem in songItems[0...5] {
            var data = Dictionary<String, Any>()
            
            // Media Item Properties
            // https://developer.apple.com/documentation/mediaplayer/mpmediaitem
            
            // var albumArtist: String?
            // The primary performing artist for an album as a whole.
            data["albumArtist"] = songItem.albumArtist ?? ""
            
            // var albumArtistPersistentID: MPMediaEntityPersistentID
            // The persistent identifier for the primary performing artist for an album as a whole.
            data["albumArtistPersistentID"] = songItem.albumArtistPersistentID
            
            // var albumPersistentID: MPMediaEntityPersistentID
            // The persistent identifier for an album.
            data["albumPersistentID"] = songItem.albumPersistentID
            
            // var albumTitle: String?
            // The title of an album, such as “Live On Mars”, as opposed to the title of an individual song on the album, such as “Crater Dance (radio edit)”.
            data["title"] = songItem.title ?? ""
            
            // var albumTrackCount: Int
            // The number of tracks in the album that contains the media item.
            data["albumTrackCount"] = songItem.albumTrackCount
            
            // var albumTrackNumber: Int
            // The track number of the media item, for a media item that is part of an album.
            data["albumTrackNumber"] = songItem.albumTrackNumber
            
            // var artist: String?
            // The performing artist(s) for a media item—which may vary from the primary artist for the album that a media item belongs to.
            data["artist"] = songItem.artist ?? ""
            
            // var artistPersistentID: MPMediaEntityPersistentID
            // The persistent identifier for an artist.
            data["artistPersistentID"] = songItem.artistPersistentID
            
            // var artwork: MPMediaItemArtwork?
            // The artwork image for the media item.
            data["artwork"] = {
                if songItem.artwork == nil { return "" }
                
                let image = songItem.artwork!.image(at: /* CGSize(width: 100, height: 100) */ songItem.artwork!.bounds.size)
                if image == nil { return "" }
                
                let png = UIImagePNGRepresentation(image!)
                if png == nil { return "" }
                
                return png!.base64EncodedString()
            }()
            
            // var assetURL: URL?
            // The URL pointing to the media item.
            data["assetURL"] = songItem.assetURL != nil ? songItem.assetURL!.absoluteString : ""
            
            // var beatsPerMinute: Int
            // The number of musical beats per minute for the media item.
            data["beatsPerMinute"] = songItem.beatsPerMinute
            
            // var bookmarkTime: TimeInterval (Alias Double)
            // The user’s place in the media item the most recent time it was played.
            data["bookmarkTime"] = songItem.bookmarkTime
            
            // var isCloudItem: Bool
            // A Boolean value indicating whether the media item is an iCloud Music Library item.
            data["isCloudItem"] = songItem.isCloudItem
            
            // var comments: String?
            // Textual information about the media item.
            data["comments"] = songItem.comments ?? ""
            
            // var isCompilation: Bool
            // A Boolean value indicating whether the media item is part of a compilation.
            data["isCompilation"] = songItem.isCompilation
            
            // var composer: String?
            // The musical composer for the media item.
            data["composer"] = songItem.composer ?? ""
            
            // var composerPersistentID: MPMediaEntityPersistentID
            // The persistent identifier for a composer.
            data["composerPersistentID"] = songItem.composerPersistentID
            
            // var dateAdded: Date
            // The date the item was added to the library.
            data["dateAdded"] = songItem.dateAdded.timeIntervalSince1970
            
            // var discCount: Int
            // The number of discs in the album that contains the media item.
            data["discCount"] = songItem.discCount
            
            // var discNumber: Int
            // The disc number of the media item, for a media item that is part of a multi-disc album.
            data["discNumber"] = songItem.discNumber
            
            // var isExplicitItem: Bool
            // A Boolean value that indicates whether the item has explicit (adult) lyrics or language.
            data["isExplicitItem"] = songItem.isExplicitItem
            
            // var genre: String?
            // The musical or film genre of the media item.
            data["genre"] = songItem.genre ?? ""
            
            // var genrePersistentID: MPMediaEntityPersistentID
            // The persistent identifier for a genre.
            data["genrePersistentID"] = songItem.genrePersistentID
            
            // var lastPlayedDate: Date?
            // The date a media item was last played.
            data["lastPlayedDate"] = songItem.lastPlayedDate != nil ? songItem.lastPlayedDate!.timeIntervalSince1970 : 0
            
            // var lyrics: String?
            // The lyrics for the media item.
            data["lyrics"] = songItem.lyrics ?? "" as String
            
            // var mediaType: MPMediaType
            // The media type of the media item.
            data["mediaType"] = {
                switch songItem.mediaType {
                // Audio
                    
                case MPMediaType.music:
                    return "music"
                case MPMediaType.podcast:
                    return "podcast"
                case MPMediaType.audioBook:
                    return "audioBook"
                case MPMediaType.audioITunesU:
                    return "audioITunesU"
                case MPMediaType.anyAudio:
                    return "anyAudio"
                    
                // Video
                    
                case MPMediaType.movie:
                    return "movie"
                case MPMediaType.tvShow:
                    return "tvShow"
                case MPMediaType.videoPodcast:
                    return "videoPodcast"
                case MPMediaType.musicVideo:
                    return "musicVideo"
                case MPMediaType.videoITunesU:
                    return "videoITunesU"
                case MPMediaType.homeVideo:
                    return "homeVideo"
                case MPMediaType.anyVideo:
                    return "anyVideo"
                    
                // Any
                    
                default:
                    return "any"
                }
            }()
            
            // var persistentID: MPMediaEntityPersistentID (Alias UInt64)
            // The persistent identifier for the media item.
            data["persistentID"] = songItem.persistentID
            
            // var playCount: Int
            // The number of times the user has played the media item.
            data["playCount"] = songItem.playCount
            
            // var playbackDuration: TimeInterval
            // The playback duration of the media item.
            data["playbackDuration"] = songItem.playbackDuration
            
            // var playbackStoreID: String
            // The non-library identifier for a media item.
            data["playbackStoreID"] = songItem.playbackStoreID
            
            // var podcastPersistentID: MPMediaEntityPersistentID
            // The persistent identifier for an audio podcast.
            data["podcastPersistentID"] = songItem.podcastPersistentID
            
            // var podcastTitle: String?
            // The title of a podcast, such as “This Martian Drudgery”, as opposed to the title of an individual episode of a podcast such as “Episode 12: Another Cold Day At The Pole”.
            data["podcastTitle"] = songItem.podcastTitle ?? ""
            
            // var hasProtectedAsset: Bool
            // A Boolean indicating whether the media item has a protected asset.
            data["hasProtectedAsset"] = songItem.hasProtectedAsset
            
            // var rating: Int
            // The user-specified rating of the object in the range [0...5], where a value of 5 indicates the most favorable rating.
            data["rating"] = songItem.rating
            
            // var releaseDate: Date?
            // The date on which the media item was first publicly released.
            data["releaseDate"] = songItem.releaseDate != nil ? songItem.releaseDate!.timeIntervalSince1970 : 0
            
            // var skipCount: Int
            // The number of times the user has skipped playing the item.
            data["skipCount"] = songItem.skipCount
            
            // var title: String?
            // The title (or name) of the media item.
            data["title"] = songItem.title ?? ""
            
            // var userGrouping: String?
            // Grouping information for the media item.
            data["userGrouping"] = songItem.userGrouping ?? ""
            
            // Output
            
            songs.append( data )
        }

        let result = CDVPluginResult(status: CDVCommandStatus_OK, messageAs: songs)
        self.commandDelegate!.send(result, callbackId: command.callbackId)
    }
    
}