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66 lines
3.0 KiB
C#
66 lines
3.0 KiB
C#
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/******************************************************************************
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// MARECHAI: Master repository of computing history artifacts information
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// ----------------------------------------------------------------------------
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//
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// Filename : ComputersService.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Computers service
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2003-2020 Natalia Portillo
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*******************************************************************************/
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using System.Linq;
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using System.Threading.Tasks;
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using Marechai.Database;
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using Marechai.Database.Models;
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using Microsoft.EntityFrameworkCore;
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using Microsoft.Extensions.Localization;
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namespace Marechai.Services
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{
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public class ComputersService
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{
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readonly MarechaiContext _context;
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readonly IStringLocalizer<ComputersService> _l;
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public ComputersService(MarechaiContext context, IStringLocalizer<ComputersService> localizer)
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{
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_context = context;
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_l = localizer;
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}
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public async Task<int> GetComputersCountAsync() =>
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await _context.Machines.CountAsync(c => c.Type == MachineType.Computer);
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public Task<int> GetMinimumYearAsync() => _context.
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Machines.Where(t => t.Type == MachineType.Computer &&
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t.Introduced.HasValue &&
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t.Introduced.Value.Year > 1000).
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MinAsync(t => t.Introduced.Value.Year);
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public Task<int> GetMaximumYearAsync() => _context.
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Machines.Where(t => t.Type == MachineType.Computer &&
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t.Introduced.HasValue &&
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t.Introduced.Value.Year > 1000).
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MaxAsync(t => t.Introduced.Value.Year);
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}
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}
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