BuildFeed/BuildFeed.Model/BuildRepository-Lab.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using MongoDB.Bson;
using MongoDB.Driver;

namespace BuildFeed.Model
{
    public partial class BuildRepository
    {
        public async Task<string[]> SelectAllLabs(int limit = -1, int skip = 0)
        {
            IAggregateFluent<BsonDocument> query = _buildCollection.Aggregate().Group(new BsonDocument("_id", $"${nameof(Build.Lab)}")).Sort(new BsonDocument("_id", 1)).Skip(skip);

            if (limit > 0)
            {
                query = query.Limit(limit);
            }

            List<BsonDocument> grouping = await query.ToListAsync();

            return (from g in grouping
                    where !g["_id"].IsBsonNull
                    select g["_id"].AsString).ToArray();
        }

        public async Task<string[]> SelectLabsForVersion(int major, int minor)
        {
            IAggregateFluent<BsonDocument> query = _buildCollection.Aggregate().Match(new BsonDocument
            {
                new BsonElement(nameof(Build.MajorVersion), major),
                new BsonElement(nameof(Build.MinorVersion), minor)
            }).Group(new BsonDocument("_id", $"${nameof(Build.Lab)}")).Sort(new BsonDocument("_id", 1));

            List<BsonDocument> grouping = await query.ToListAsync();

            return (from g in grouping
                    where !g["_id"].IsBsonNull
                    select g["_id"].AsString).ToArray();
        }

        public async Task<List<string>> SearchLabs(string search)
        {
            List<Tuple<string>> result = await _buildCollection.Aggregate().Match(b => b.Lab != null).Match(b => b.Lab != "").Match(b => b.Lab.ToLower().Contains(search.ToLower())).Group(b => b.Lab.ToLower(),
                // incoming bullshit hack
                bg => new Tuple<string>(bg.Key)).ToListAsync();

            // work ourselves out of aforementioned bullshit hack
            return result.Select(b => b.Item1).ToList();
        }

        public async Task<long> SelectAllLabsCount()
        {
            IAggregateFluent<BsonDocument> query = _buildCollection.Aggregate().Group(new BsonDocument("_id", new BsonDocument(nameof(Build.Lab), $"${nameof(Build.Lab)}"))).Sort(new BsonDocument("_id", 1));

            List<BsonDocument> grouping = await query.ToListAsync();

            return grouping.Count;
        }

        public async Task<List<Build>> SelectLab(string lab, int limit = -1, int skip = 0)
        {
            IFindFluent<Build, Build> query = _buildCollection.Find(new BsonDocument(nameof(Build.LabUrl), lab)).Sort(sortByCompileDate).Skip(skip);

            if (limit > 0)
            {
                query = query.Limit(limit);
            }

            return await query.ToListAsync();
        }

        public async Task<long> SelectLabCount(string lab) => await _buildCollection.CountAsync(new BsonDocument(nameof(Build.LabUrl), lab));
    }
}