36 lines
1.2 KiB
C#
36 lines
1.2 KiB
C#
using LiteCqrs;
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using Microsoft.EntityFrameworkCore;
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using TeleWave.Application.Common.Interfaces;
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using TeleWave.Application.Common.Models;
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namespace TeleWave.Application.Broadcast.AddChannelAd;
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public sealed class AddChannelAdCommandHandler(IAppDbContext dbContext)
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: ICommandHandler<AddChannelAdCommand, Result<Guid>>
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{
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public async Task<Result<Guid>> Handle(
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AddChannelAdCommand command,
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CancellationToken cancellationToken
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)
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{
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var channel = await dbContext
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.Channels.Include(c => c.Ads)
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.FirstOrDefaultAsync(c => c.Id == command.ChannelId, cancellationToken);
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if (channel is null)
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return Result.Failure<Guid>(ChannelErrors.NotFound);
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var assetExists = await dbContext.MediaAssets.AnyAsync(
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a => a.Id == command.MediaAssetId,
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cancellationToken
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);
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if (!assetExists)
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return Result.Failure<Guid>(ChannelErrors.AssetNotFound);
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if (channel.HasAd(command.MediaAssetId))
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return Result.Failure<Guid>(ChannelErrors.AdAlreadyAdded);
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var ad = channel.AddAd(command.MediaAssetId);
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return Result.Success(ad.Id);
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}
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}
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