/// <summary>
/// Fetch a list of items from synology for the specified page.
/// Fetch related metadata for those items from the database.
/// </summary>
/// <param name="path"></param>
/// <param name="page"></param>
/// <param name="quantity"></param>
/// <param name="sortBy"></param>
/// <param name="sortDirection"></param>
/// <param name="fileType"></param>
/// <param name="onlyWritable"></param>
/// <param name="additional"></param>
/// <returns></returns>
public async Task <PageModel <ItemModel> > ListAsync(string path, int page = 1, int quantity = 0, SortBy sortBy = SortBy.Name, SortDirection sortDirection = SortDirection.Ascending, string fileType = "all", bool onlyWritable = false, string[] additional = null)
{
if (page < 1)
{
throw new ArgumentException("Argument must be greater than 0", nameof(page));
}
if (quantity < 0)
{
throw new ArgumentException("Argument must be greater than or equal to 0.", nameof(quantity));
}
if (quantity == 0)
{
page = 1;
}
// Fetch items from synology.
var sitems = await _fileStation.ListAsync(path ?? "/", page - 1, quantity, sortBy, sortDirection, fileType, onlyWritable, additional);
// Fetch item metadata from database.
var query = (from p in _context.Items.AsNoTracking()
join i in _context.Items on p.Id equals i.ParentId
where p.Path == path
select i);
query = sortBy switch
{
SortBy.Name => sortDirection == SortDirection.Ascending ? query.OrderBy(i => i.Name) : query.OrderByDescending(i => i.Name),
SortBy.Created => sortDirection == SortDirection.Ascending ? query.OrderBy(i => i.CreatedOn) : query.OrderByDescending(i => i.CreatedOn),
SortBy.Modified => sortDirection == SortDirection.Ascending ? query.OrderBy(i => i.UpdatedOn) : query.OrderByDescending(i => i.UpdatedOn),
_ => query.OrderByDescending(i => i.CreatedOn)
};
if (page > 1 && quantity > 0)
{
query = query.Skip((page - 1) & quantity).Take(quantity);
}
var items = query.ToArray();
// Convert to models based on whether we have metadata or not.
var result = sitems.Data.Files.Select(si =>
{
var item = items.FirstOrDefault(i => i.Path == si.Path);
return(item == null ? new ItemModel(si) : new ItemModel(item));
}).OrderBy(i => i.SortOrder).OrderByDescending(i => i.PublishedOn).ThenByDescending(i => i.CreatedOn).ThenBy(i => i.Name);
return(new PageModel <ItemModel>(page, sitems.Data.Total, result));
}
#endregion
}