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using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.EntityFrameworkCore;
namespace Jellyfin.Database.Implementations;
/// <summary>
/// Defines the type and extension points for multi database support.
/// </summary>
public interface IJellyfinDatabaseProvider
{
/// <summary>
/// Gets or Sets the Database Factory when initialisaition is done.
/// </summary>
IDbContextFactory<JellyfinDbContext>? DbContextFactory { get; set; }
/// <summary>
/// Initialises jellyfins EFCore database access.
/// </summary>
/// <param name="options">The EFCore database options.</param>
void Initialise(DbContextOptionsBuilder options);
/// <summary>
/// Will be invoked when EFCore wants to build its model.
/// </summary>
/// <param name="modelBuilder">The ModelBuilder from EFCore.</param>
void OnModelCreating(ModelBuilder modelBuilder);
/// <summary>
/// Will be invoked when EFCore wants to configure its model.
/// </summary>
/// <param name="configurationBuilder">The ModelConfigurationBuilder from EFCore.</param>
void ConfigureConventions(ModelConfigurationBuilder configurationBuilder);
/// <summary>
/// If supported this should run any periodic maintaince tasks.
/// </summary>
/// <param name="cancellationToken">The token to abort the operation.</param>
/// <returns>A <see cref="Task"/> representing the asynchronous operation.</returns>
Task RunScheduledOptimisation(CancellationToken cancellationToken);
/// <summary>
/// If supported this should perform any actions that are required on stopping the jellyfin server.
/// </summary>
/// <param name="cancellationToken">The token that will be used to abort the operation.</param>
/// <returns>A <see cref="Task"/> representing the asynchronous operation.</returns>
Task RunShutdownTask(CancellationToken cancellationToken);
/// <summary>
/// Runs a full Database backup that can later be restored to.
/// </summary>
/// <param name="cancellationToken">A cancellation token.</param>
/// <returns>A key to identify the backup.</returns>
/// <exception cref="NotImplementedException">May throw an NotImplementException if this operation is not supported for this database.</exception>
Task<string> MigrationBackupFast(CancellationToken cancellationToken);
/// <summary>
/// Restores a backup that has been previously created by <see cref="MigrationBackupFast(CancellationToken)"/>.
/// </summary>
/// <param name="key">The key to the backup from which the current database should be restored from.</param>
/// <param name="cancellationToken">A cancellation token.</param>
/// <returns>A <see cref="Task"/> representing the result of the asynchronous operation.</returns>
Task RestoreBackupFast(string key, CancellationToken cancellationToken);
/// <summary>
/// Removes all contents from the database.
/// </summary>
/// <param name="dbContext">The Database context.</param>
/// <param name="tableNames">The names of the tables to purge or null for all tables to be purged.</param>
/// <returns>A Task.</returns>
Task PurgeDatabase(JellyfinDbContext dbContext, IEnumerable<string>? tableNames);
}
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