using System;
using System.Collections.Generic;
using System.Linq.Expressions;
using System.Threading;
using System.Threading.Tasks;
using MongoDbGenericRepository.DataAccess.Base;
using MongoDbGenericRepository.Models;

namespace MongoDbGenericRepository.DataAccess.Delete
{
    /// <summary>
    /// The MongoDbEraser interface. used to delete documents from the collections.
    /// </summary>
    public interface IMongoDbEraser : IDataAccessBase
    {
        /// <summary>
        /// Deletes a document.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <param name="document">The document you want to delete.</param>
        /// <param name="cancellationToken">An optional cancellation token</param>
        /// <returns>The number of documents deleted.</returns>
        long DeleteOne<TDocument, TKey>(TDocument document, CancellationToken cancellationToken = default)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>;

        /// <summary>
        /// Deletes a document matching the condition of the LINQ expression filter.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <param name="filter">A LINQ expression filter.</param>
        /// <param name="partitionKey">An optional partition key.</param>
        /// <param name="cancellationToken">An optional cancellation token</param>
        /// <returns>The number of documents deleted.</returns>
        long DeleteOne<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null, CancellationToken cancellationToken = default)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>;

        /// <summary>
        /// Asynchronously deletes a document matching the condition of the LINQ expression filter.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <param name="document">The document you want to delete.</param>
        /// <param name="cancellationToken">The cancellation token</param>
        /// <returns>The number of documents deleted.</returns>
        Task<long> DeleteOneAsync<TDocument, TKey>(TDocument document, CancellationToken cancellationToken)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>;

        /// <summary>
        /// Asynchronously deletes a document matching the condition of the LINQ expression filter.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <param name="filter">A LINQ expression filter.</param>
        /// <param name="partitionKey">An optional partition key.</param>
        /// <param name="cancellationToken">The cancellation token</param>
        /// <returns>The number of documents deleted.</returns>
        Task<long> DeleteOneAsync<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey, CancellationToken cancellationToken)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>;

        /// <summary>
        /// Asynchronously deletes the documents matching the condition of the LINQ expression filter.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <param name="filter">A LINQ expression filter.</param>
        /// <param name="partitionKey">An optional partition key.</param>
        /// <param name="cancellationToken">The cancellation token</param>
        /// <returns>The number of documents deleted.</returns>
        Task<long> DeleteManyAsync<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey, CancellationToken cancellationToken)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>;

        /// <summary>
        /// Asynchronously deletes a list of documents.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <param name="documents">The list of documents to delete.</param>
        /// <param name="cancellationToken">The cancellation token.</param>
        /// <returns>The number of documents deleted.</returns>
        Task<long> DeleteManyAsync<TDocument, TKey>(IEnumerable<TDocument> documents, CancellationToken cancellationToken)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>;

        /// <summary>
        /// Deletes a list of documents.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <param name="documents">The list of documents to delete.</param>
        /// <returns>The number of documents deleted.</returns>
        long DeleteMany<TDocument, TKey>(IEnumerable<TDocument> documents)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>;

        /// <summary>
        /// Deletes the documents matching the condition of the LINQ expression filter.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <param name="filter">A LINQ expression filter.</param>
        /// <param name="partitionKey">An optional partition key.</param>
        /// <returns>The number of documents deleted.</returns>
        long DeleteMany<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, string partitionKey = null)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>;
    }
}