Imports System.Globalization

Public Class Song

    'Songinfos aus Datei
    Public Property Artist As String
    Public Property Title As String
    Public Property Genre As String
    Public Property Language As String
    Public Property Year As Integer
    Public Property Previewstart As Decimal
    Public Property BPM As Integer
    Public Property GAP As Integer
    Public Property Songfilename As String
    Public Property CoverFilename As String
    Public Property VideoFilename As String

    Public Property SongInfos As New Dictionary(Of String, String)

    'Weitere Properties
    Public Property ID As Integer
    Public Property RootDir As String
    Public Property SubDirectory As String
    Public Property IsFavorite As Boolean
    Public Property InfoFile As String
    Public Property HasError As Boolean
    Public Property ErrorText As String
    Public Property ExistsInFavDir As Boolean


    Public ReadOnly Property SongInfoCount As Integer
        Get
            Return SongInfos.Count
        End Get
    End Property
    Public ReadOnly Property FullPath As String
        Get
            Return RootDir & SubDirectory & "\"
        End Get
    End Property

    Public ReadOnly Property Songfile As String
        Get
            Return FullPath & Songfilename
        End Get
    End Property

    Public ReadOnly Property Coverfile As String
        Get
            Return FullPath & CoverFilename
        End Get
    End Property
    Public ReadOnly Property Videofile As String
        Get
            Return FullPath & VideoFilename
        End Get
    End Property

    Public ReadOnly Property ParentFolderName As String
        'Gibt den übergeordneten Ordnernamen zurück, in dem sich der Pfad befindet
        Get
            Dim t As String = FullPath
            If t.EndsWith("\") Then
                t = t.Substring(0, t.Length - 1)
            End If
            t = t.Substring(0, t.LastIndexOf("\"))
            Return IO.Path.GetFileName(t)
        End Get
    End Property

    Public ReadOnly Property FolderName As String
        'Gibt den übergeordneten Ordnernamen zurück, in dem sich der Pfad befindet
        Get
            Dim t As String = FullPath
            If t.EndsWith("\") Then
                t = t.Substring(0, t.Length - 1)
            End If
            Return IO.Path.GetFileName(t)
        End Get
    End Property

    Public Sub ReadInfoFile()
        Try
            Dim line As String
            Using sr As New IO.StreamReader(InfoFile, System.Text.Encoding.Default)
                Do Until sr.EndOfStream
                    line = sr.ReadLine
                    If line.StartsWith("#") Then
                        AddSongInfo(line)
                    ElseIf line.Trim.Length > 0 Then 'Startet nicht mit # und ist auch keine Leerzeile, das heißt jetzt fängt wohl der Lyrics-Part an
                        Exit Do
                    End If
                Loop
                sr.Close()
            End Using
        Catch ex As IO.DirectoryNotFoundException
            ''Ggf Dateiname zu lang
            ErrorText = "Dateiname zu lang"
            HasError = True
        End Try
    End Sub

    Private Sub AddSongInfo(infoline As String)
        '#TITLE:Not Myself Tonight
        '#ARTIST:Christina Aguilera
        '#LANGUAGE:English
        '#GENRE:Pop
        '#YEAR:2010
        '#MP3:Christina Aguilera - Not Myself Tonight (Duett).mp3
        '#COVER:Christina Aguilera - Not Myself Tonight (Duett)[CO].jpg
        '#VIDEO:Christina Aguilera - Not Myself Tonight (Duett).mp4
        '#PREVIEWSTART:25,250
        '#BPM:240
        '#GAP:25000

        Dim field, value As String
        If infoline.StartsWith("#") AndAlso infoline.Contains(":") Then
            field = infoline.Substring(1, infoline.IndexOf(":") - 1).Trim
            value = infoline.Substring(infoline.IndexOf(":") + 1).Trim

            Select Case field.ToUpper
                Case "TITLE"
                    Title = value
                Case "ARTIST"
                    Artist = value
                Case "YEAR"
                    Year = CInt(value)
                Case "MP3"
                    Songfilename = value
                Case "COVER"
                    CoverFilename = value
                Case "VIDEO"
                    VideoFilename = value
                Case "LANGUAGE"
                    Language = value
                Case "GENRE"
                    Genre = value
                Case "PREVIEWSTART"
                    If value.Contains(",") Then
                        Decimal.TryParse(value, NumberStyles.Number, New CultureInfo("de-DE"), Previewstart)
                    Else
                        Decimal.TryParse(value, NumberStyles.Number, New CultureInfo("en-US"), Previewstart)
                    End If
                Case "BPM"
                    BPM = CInt(value)
                Case "GAP"
                    GAP = CInt(value)
                Case Else
                    If SongInfos.ContainsKey(field) Then
                        Dim newvalue = SongInfos(field)
                        newvalue = $"{newvalue},{value}"
                        SongInfos(field) = newvalue
                    Else
                        SongInfos.Add(field, value)
                    End If

            End Select
        End If
    End Sub
End Class