sleep.swift

fileprivate func generateForSleep(_ playlist: Playlist) -> Playlist {

        var remainingDurationInMs: Int = self.getDurationInMsFromNow()
        let maxRemainderLength = 90 * 60 * 1000 * 2
        let firstChunks = [1,3,4,6,8,9,13,14,16]
        var thenChunks = [2,4,7,8,9,10,12,14,15]
        let endChunks = [5,6,11,16]
        let ultEndChunks = [17]
        
        //if no Grace Davidson, must get rid of 2, 7, 12
        if AppDataManager.shared.includeVocals == false {
            thenChunks = [4,8,9,10,14,15]
        }

        var chunks: [PlayChunk] = []
        var resultTracks: [Track] = []

        while remainingDurationInMs > maxRemainderLength {
            let resultChunks: [PlayChunk] = self.generateClustersFor(playlist: playlist, duration: 90 * 60 * 1000,
                chunkDefinition:[firstChunks, thenChunks, endChunks])

            remainingDurationInMs -= (90 * 60 * 1000)
            chunks.append(contentsOf: resultChunks)
            print("Chunk for \(90*60)s limit -") // \(resultChunks.debugDescription())")

            for chunk in resultChunks {
                print("Chunk - \(chunk.debugDescription())")
            }

            resultTracks.append(contentsOf: PlayChunk.serializeChunk(chunks: resultChunks))
        }

        // Do the ULT END
        let resultChunks: [PlayChunk] = self.generateClustersFor(playlist: playlist, duration: remainingDurationInMs,
            chunkDefinition:[firstChunks, thenChunks, ultEndChunks])

        chunks.append(contentsOf: resultChunks)

        print("Chunk for \(remainingDurationInMs)ms limit -")
        for chunk in resultChunks {
            print("Chunk - \(chunk.debugDescription())")
        }

        resultTracks.append(contentsOf: PlayChunk.serializeChunk(chunks: resultChunks))
        playlist.tracks = resultTracks

        return playlist
    }