2021-05-30 18:52:32 +00:00
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/*
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*
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* (c) Copyright Ascensio System Limited 2010-2021
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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2022-02-24 09:00:51 +00:00
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namespace ASC.Files.ThumbnailBuilder;
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[Scope]
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internal class FileDataProvider
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{
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private FilesDbContext filesDbContext => _lazyFilesDbContext.Value;
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private readonly ThumbnailSettings _thumbnailSettings;
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private readonly ICache _cache;
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private readonly Lazy<FilesDbContext> _lazyFilesDbContext;
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private readonly string _cacheKey;
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public FileDataProvider(
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ThumbnailSettings settings,
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ICache ascCache,
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DbContextManager<FilesDbContext> dbContextManager)
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{
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_thumbnailSettings = settings;
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_cache = ascCache;
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_lazyFilesDbContext = new Lazy<FilesDbContext>(() => dbContextManager.Get(_thumbnailSettings.ConnectionStringName));
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_cacheKey = "PremiumTenants";
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}
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2022-02-24 08:40:21 +00:00
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public int[] GetPremiumTenants()
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{
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var result = _cache.Get<int[]>(_cacheKey);
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if (result != null)
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{
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return result;
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}
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/*
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// v_premium_tenants view:
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select
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t.tenant,
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(now() < max(t.stamp)) AS premium
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from tenants_tariff t
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left join tenants_quota q ON (t.tariff = q.tenant)
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where
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(
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(
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isnull(t.comment) or
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(
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(not((t.comment like '%non-profit%'))) and
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(not((t.comment like '%test%'))) and
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(not((t.comment like '%translate%'))) and
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(not((t.comment like '%trial%')))
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)
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) and
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(not((q.features like '%free%'))) and
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(not((q.features like '%non-profit%'))) and
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(not((q.features like '%trial%')))
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)
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group by t.tenant
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*/
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var search =
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filesDbContext.Tariffs
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.Join(filesDbContext.Quotas.AsQueryable().DefaultIfEmpty(), a => a.Tariff, b => b.Tenant, (tariff, quota) => new { tariff, quota })
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.Where(r =>
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(
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r.tariff.Comment == null ||
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(
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!r.tariff.Comment.Contains("non-profit") &&
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!r.tariff.Comment.Contains("test") &&
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!r.tariff.Comment.Contains("translate") &&
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!r.tariff.Comment.Contains("trial")
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)
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) &&
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!r.quota.Features.Contains("free") &&
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!r.quota.Features.Contains("non-profit") &&
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!r.quota.Features.Contains("trial")
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)
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.GroupBy(r => r.tariff.Tenant)
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.Select(r => new { tenant = r.Key, stamp = r.Max(b => b.tariff.Stamp) })
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.Where(r => r.stamp > DateTime.UtcNow);
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result = search.Select(r => r.tenant).ToArray();
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_cache.Insert(_cacheKey, result, DateTime.UtcNow.AddHours(1));
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return result;
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}
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private IEnumerable<FileData<int>> GetFileData(Expression<Func<DbFile, bool>> where)
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{
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var search = filesDbContext.Files
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.AsQueryable()
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.Where(r => r.CurrentVersion && r.Thumb == Thumbnail.Waiting && !r.Encrypted)
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.OrderByDescending(r => r.ModifiedOn)
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.Take(_thumbnailSettings.SqlMaxResults);
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if (where != null)
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{
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search = search.Where(where);
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}
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return search
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.Join(filesDbContext.Tenants, r => r.TenantId, r => r.Id, (f, t) => new FileTenant { DbFile = f, DbTenant = t })
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.Where(r => r.DbTenant.Status == TenantStatus.Active)
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.Select(r => new FileData<int>(r.DbFile.TenantId, r.DbFile.Id, ""))
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.ToList();
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}
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public IEnumerable<FileData<int>> GetFilesWithoutThumbnails()
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{
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IEnumerable<FileData<int>> result;
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var premiumTenants = GetPremiumTenants();
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if (premiumTenants.Length > 0)
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{
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result = GetFileData(r => premiumTenants.Contains(r.TenantId));
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if (result.Any())
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{
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return result;
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}
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}
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result = GetFileData(null);
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return result;
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}
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}
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