public async Task <IActionResult> AddSongTheme(int songId, string theme)
{
//Make sure the song exists, if not redirect to ItemNotFound page
if (songId < 1)
{
return(new BadRequestResult());
}
//Make sure the user actually submitted text. If not, do nothing
if (!string.IsNullOrWhiteSpace(theme))
{
//Check to see if this theme already exists
var existingThemeId = await _themeService.CheckIfThemeExistsAsync(theme);
if (existingThemeId == null)
{
//if we're here the theme deosn't exist, create new theme
var themeId = await _themeService.AddThemeAsync(theme, GetUserId());
//Now create a new SongTheme using the ThemeId from the theme that was just created
await _themeService.AddSongThemeAsync(songId, themeId, GetUserId());
}
else
{
//if we're here, the theme already exists. Check to see if a SongTheme already exists.
var existingSongThemeId = await _themeService.CheckIfSongThemeExistsAsync(existingThemeId.GetValueOrDefault(), songId);
if (existingSongThemeId == null)
{
//if we're here, the SongTheme doesn't exist, create a new one (will also create a SongThemeUser for the current user)
await _themeService.AddSongThemeAsync(songId, existingThemeId.GetValueOrDefault(), GetUserId());
}
else
{
//if we're here, the SongTheme already exists. Create a SongThemeUser for the current user.
await _themeService.AddSongThemeUserAsync(existingSongThemeId.GetValueOrDefault(), GetUserId());
}
}
}
return(PartialView("SongThemes", new SongThemesViewModel {
SongThemes = await _themeService.GetSongThemesBySongIdAsync(songId), UserId = GetUserId(), SongId = songId
}));
}