DocSpace-buildtools/common/ASC.Core.Common/Data/DbAzService.cs

// (c) Copyright Ascensio System SIA 2010-2022
//
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// You can redistribute it and/or modify it under the terms
// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
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// to the effect that Ascensio System SIA expressly excludes the warranty of non-infringement of
// any third-party rights.
//
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE. For details, see
// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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namespace ASC.Core.Data;

[Scope]
class DbAzService : IAzService
{
    private readonly IDbContextFactory<UserDbContext> _dbContextFactory;
    private readonly IMapper _mapper;

    public DbAzService(IDbContextFactory<UserDbContext> dbContextFactory, IMapper mapper)
    {
        _dbContextFactory = dbContextFactory;
        _mapper = mapper;
    }

    public async Task<IEnumerable<AzRecord>> GetAcesAsync(int tenant, DateTime from)
    {
        using var userDbContext = _dbContextFactory.CreateDbContext();

        // row with tenant = -1 - common for all tenants, but equal row with tenant != -1 escape common row for the portal
        var commonAces = await
            userDbContext.Acl
            .Where(r => r.Tenant == Tenant.DefaultTenant)
            .ProjectTo<AzRecord>(_mapper.ConfigurationProvider)
            .ToDictionaryAsync(a => string.Concat(a.Tenant.ToString(), a.Subject.ToString(), a.Action.ToString(), a.Object));

        var tenantAces = await
            userDbContext.Acl
            .Where(r => r.Tenant == tenant)
            .ProjectTo<AzRecord>(_mapper.ConfigurationProvider)
            .ToListAsync();

        // remove excaped rows
        foreach (var a in tenantAces)
        {
            var key = string.Concat(a.Tenant.ToString(), a.Subject.ToString(), a.Action.ToString(), a.Object);
            if (commonAces.TryGetValue(key, out var common))
            {
                commonAces.Remove(key);
                if (common.AceType == a.AceType)
                {
                    tenantAces.Remove(a);
                }
            }
        }

        return commonAces.Values.Concat(tenantAces);
    }

    public async Task<AzRecord> SaveAceAsync(int tenant, AzRecord r)
    {
        r.Tenant = tenant;

        if (!await ExistEscapeRecordAsync(r))
        {
            await InsertRecordAsync(r);
        }
        else
        {
            // unescape
            await DeleteRecordAsync(r);
        }

        return r;
    }

    public async Task RemoveAceAsync(int tenant, AzRecord r)
    {
        r.Tenant = tenant;

        if (await ExistEscapeRecordAsync(r))
        {
            // escape
            await InsertRecordAsync(r);
        }
        else
        {
            await DeleteRecordAsync(r);
        }

    }


    private async Task<bool> ExistEscapeRecordAsync(AzRecord r)
    {
        using var userDbContext = _dbContextFactory.CreateDbContext();
        return await userDbContext.Acl
            .Where(a => a.Tenant == Tenant.DefaultTenant)
            .Where(a => a.Subject == r.Subject)
            .Where(a => a.Action == r.Action)
            .Where(a => a.Object == (r.Object ?? string.Empty))
            .Where(a => a.AceType == r.AceType)
            .AnyAsync();
    }

    private async Task DeleteRecordAsync(AzRecord r)
    {
        using var userDbContext = _dbContextFactory.CreateDbContext();
        var record = await userDbContext.Acl
            .Where(a => a.Tenant == r.Tenant)
            .Where(a => a.Subject == r.Subject)
            .Where(a => a.Action == r.Action)
            .Where(a => a.Object == (r.Object ?? string.Empty))
            .Where(a => a.AceType == r.AceType)
            .FirstOrDefaultAsync();

        if (record != null)
        {
            userDbContext.Acl.Remove(record);
            await userDbContext.SaveChangesAsync();
        }
    }

    private async Task InsertRecordAsync(AzRecord r)
    {
        using var userDbContext = _dbContextFactory.CreateDbContext();
        await userDbContext.AddOrUpdateAsync(q=> q.Acl, _mapper.Map<AzRecord, Acl>(r));
        await userDbContext.SaveChangesAsync();
    }
}