CatsOfMastodon/Services/DbInitializer.cs

using JsonFlatFileDataStore;
using mstdnCats.Models;

namespace mstdnCats.Services
{
    public class DbInitializer
    {
        public static Task<IDocumentCollection<Post>> SetupDb(string _dbname)
        {
            // Setup DB
            IDocumentCollection<Post>? collection = null;

                try
                {
                    // Initialize DB
                    var store = new DataStore($"{_dbname}.json", minifyJson: true);
                    collection = store.GetCollection<Post>();
                }
                catch
                {
                    return Task.FromResult<IDocumentCollection<Post>>(null);
                }

                // Return collection
                return Task.FromResult(collection);
        }
    }
}