> ## Documentation Index
> Fetch the complete documentation index at: https://numadocs.secc.org/llms.txt
> Use this file to discover all available pages before exploring further.

# Sermon Collection Service

> Handles logic related to the `SermonCollection` model.

Namespace: [Numa.Services](numaservices)<br />
Related Models: [SermonCollection.cs](../models/sermoncollection)<br />
Related Interfaces: `ISermonCollectionService.cs`

## Fields

| Field Name          | Type                             | Description                                                               |
| :------------------ | :------------------------------- | :------------------------------------------------------------------------ |
| `_dbContextFactory` | `IDbContextFactory<NumaContext>` | `DbContextFactory` for instantiating instances of `NumaContext` on-demand |

## Constructor

```csharp theme={null}
public SermonCollectionService( IDbContextFactory<NumaContext> dbContextFactory )
{
    _dbContextFactory = dbContextFactory ?? throw new ArgumentNullException( nameof( dbContextFactory ) );
}
```

## Properties

`SermonCollectionService` does not have any properties.

## Methods

| Method Name                                    | Description                                                                                                 | Parameters | Return Type                           |
| :--------------------------------------------- | :---------------------------------------------------------------------------------------------------------- | :--------- | :------------------------------------ |
| `GetSermonCollectionsByUserIdAsync`            | Gets all sermon collections available to the current user                                                   | `string`   | `Task<IEnumerable<SermonCollection>>` |
| `GetSermonCollectionsByUploadPermissionsAsync` | Gets all sermon collections that can have new sermons uploaded                                              |            | `Task<IEnumerable<SermonCollection>>` |
| `GetAllPublicSermonCollectionsAsync`           | Gets all public sermon collections that are not deleted                                                     |            | `Task<IEnumerable<SermonCollection>>` |
| `GetImageSrcByIdAsync`                         | Gets the `ImageSrc` of a sermon collection; returns the relative path of the thumbnail image, if it has one | `string`   | `Task<string?>`                       |
| `GetNameByIdAsync`                             | Gets the `Name` of a sermon collection                                                                      | `string`   | `Task<string>`                        |
| `GetIndexIdentifierByIdAsync`                  | Gets the `IndexIdentifier` of a sermon collection                                                           | `string`   | `Task<string>`                        |

## ISermonCollectionService.cs

```csharp theme={null}
using Numa.Models;

namespace Numa.Interfaces
{
    public interface ISermonCollectionService
    {
        Task<IEnumerable<SermonCollection>> GetSermonCollectionsByUserIdAsync( string userId );
        Task<IEnumerable<SermonCollection>> GetSermonCollectionsByUploadPermissionsAsync();
        Task<string?> GetImageSrcByIdAsync( string sermonCollectionId );
        Task<string> GetNameByIdAsync( string sermonCollectionId );
        Task<IEnumerable<SermonCollection>> GetAllPublicSermonCollectionsAsync();
        Task<string> GetIndexIdentifierByIdAsync( string sermonCollectionId );
    }
}
```