using MongoDB.Driver;
using MongoDbGenericRepository.DataAccess.Base;
using MongoDbGenericRepository.Models;
using System;
using System.Linq.Expressions;
using System.Threading;
using System.Threading.Tasks;

namespace MongoDbGenericRepository.DataAccess.Update
{
    public partial class MongoDbUpdater : DataAccessBase
    {
        public MongoDbUpdater(IMongoDbContext mongoDbContext) : base(mongoDbContext)
        {
        }

        /// <summary>
        /// Asynchronously Updates 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="modifiedDocument">The document with the modifications you want to persist.</param>
        public virtual async Task<bool> UpdateOneAsync<TDocument, TKey>(TDocument modifiedDocument)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>
        {
            var filter = Builders<TDocument>.Filter.Eq("Id", modifiedDocument.Id);
            var updateRes = await HandlePartitioned<TDocument, TKey>(modifiedDocument).ReplaceOneAsync(filter, modifiedDocument);
            return updateRes.ModifiedCount == 1;
        }

        /// <summary>
        /// Updates 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="modifiedDocument">The document with the modifications you want to persist.</param>
        public virtual bool UpdateOne<TDocument, TKey>(TDocument modifiedDocument)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>
        {
            var filter = Builders<TDocument>.Filter.Eq("Id", modifiedDocument.Id);
            var updateRes = HandlePartitioned<TDocument, TKey>(modifiedDocument).ReplaceOne(filter, modifiedDocument);
            return updateRes.ModifiedCount == 1;
        }

        /// <summary>
        /// Takes a document you want to modify and applies the update you have defined in MongoDb.
        /// </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="documentToModify">The document you want to modify.</param>
        /// <param name="update">The update definition for the document.</param>
        public virtual async Task<bool> UpdateOneAsync<TDocument, TKey>(TDocument documentToModify, UpdateDefinition<TDocument> update)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>
        {
            var filter = Builders<TDocument>.Filter.Eq("Id", documentToModify.Id);
            var updateRes = await HandlePartitioned<TDocument, TKey>(documentToModify).UpdateOneAsync(filter, update, new UpdateOptions { IsUpsert = true });
            return updateRes.ModifiedCount == 1;
        }

        /// <summary>
        /// Takes a document you want to modify and applies the update you have defined in MongoDb.
        /// </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="documentToModify">The document you want to modify.</param>
        /// <param name="update">The update definition for the document.</param>
        public virtual bool UpdateOne<TDocument, TKey>(TDocument documentToModify, UpdateDefinition<TDocument> update)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>
        {
            var filter = Builders<TDocument>.Filter.Eq("Id", documentToModify.Id);
            var updateRes = HandlePartitioned<TDocument, TKey>(documentToModify).UpdateOne(filter, update, new UpdateOptions { IsUpsert = true });
            return updateRes.ModifiedCount == 1;
        }

        /// <summary>
        /// Updates the property field with the given value update a property field in entities.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <typeparam name="TField">The type of the field.</typeparam>
        /// <param name="documentToModify">The document you want to modify.</param>
        /// <param name="field">The field selector.</param>
        /// <param name="value">The new value of the property field.</param>
        public virtual async Task<bool> UpdateOneAsync<TDocument, TKey, TField>(TDocument documentToModify, Expression<Func<TDocument, TField>> field, TField value)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>
        {
            var filter = Builders<TDocument>.Filter.Eq("Id", documentToModify.Id);
            var updateRes = await HandlePartitioned<TDocument, TKey>(documentToModify).UpdateOneAsync(filter, Builders<TDocument>.Update.Set(field, value));
            return updateRes.ModifiedCount == 1;
        }

        /// <summary>
        /// Updates the property field with the given value update a property field in entities.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <typeparam name="TField">The type of the field.</typeparam>
        /// <param name="documentToModify">The document you want to modify.</param>
        /// <param name="field">The field selector.</param>
        /// <param name="value">The new value of the property field.</param>
        public virtual bool UpdateOne<TDocument, TKey, TField>(TDocument documentToModify, Expression<Func<TDocument, TField>> field, TField value)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>
        {
            var filter = Builders<TDocument>.Filter.Eq("Id", documentToModify.Id);
            var updateRes = HandlePartitioned<TDocument, TKey>(documentToModify).UpdateOne(filter, Builders<TDocument>.Update.Set(field, value));
            return updateRes.ModifiedCount == 1;
        }

        /// <summary>
        /// Updates the property field with the given value update a property field in entities.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <typeparam name="TField">The type of the field.</typeparam>
        /// <param name="filter">The document filter.</param>
        /// <param name="field">The field selector.</param>
        /// <param name="value">The new value of the property field.</param>
        /// <param name="partitionKey">The value of the partition key.</param>
        public virtual async Task<bool> UpdateOneAsync<TDocument, TKey, TField>(FilterDefinition<TDocument> filter, Expression<Func<TDocument, TField>> field, TField value, string partitionKey = null)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>
        {
            var collection = string.IsNullOrEmpty(partitionKey) ? GetCollection<TDocument, TKey>() : GetCollection<TDocument, TKey>(partitionKey);
            var updateRes = await collection.UpdateOneAsync(filter, Builders<TDocument>.Update.Set(field, value));
            return updateRes.ModifiedCount == 1;
        }

        /// <summary>
        /// For the entity selected by the filter, updates the property field with the given value.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <typeparam name="TField">The type of the field.</typeparam>
        /// <param name="filter">The document filter.</param>
        /// <param name="field">The field selector.</param>
        /// <param name="value">The new value of the property field.</param>
        /// <param name="partitionKey">The partition key for the document.</param>
        public virtual async Task<bool> UpdateOneAsync<TDocument, TKey, TField>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TField>> field, TField value, string partitionKey = null)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>
        {
            return await UpdateOneAsync<TDocument, TKey, TField>(Builders<TDocument>.Filter.Where(filter), field, value, partitionKey);
        }

        /// <summary>
        /// Updates the property field with the given value.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <typeparam name="TField">The type of the field.</typeparam>
        /// <param name="filter">The document filter.</param>
        /// <param name="field">The field selector.</param>
        /// <param name="value">The new value of the property field.</param>
        /// <param name="partitionKey">The value of the partition key.</param>
        public virtual bool UpdateOne<TDocument, TKey, TField>(FilterDefinition<TDocument> filter, Expression<Func<TDocument, TField>> field, TField value, string partitionKey = null)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>
        {
            var collection = string.IsNullOrEmpty(partitionKey) ? GetCollection<TDocument, TKey>() : GetCollection<TDocument, TKey>(partitionKey);
            var updateRes = collection.UpdateOne(filter, Builders<TDocument>.Update.Set(field, value));
            return updateRes.ModifiedCount == 1;
        }

        /// <summary>
        /// For the entity selected by the filter, updates the property field with the given value.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <typeparam name="TField">The type of the field.</typeparam>
        /// <param name="filter">The document filter.</param>
        /// <param name="field">The field selector.</param>
        /// <param name="value">The new value of the property field.</param>
        /// <param name="partitionKey">The partition key for the document.</param>
        public virtual bool UpdateOne<TDocument, TKey, TField>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TField>> field, TField value, string partitionKey = null)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>
        {
            return UpdateOne<TDocument, TKey, TField>(Builders<TDocument>.Filter.Where(filter), field, value, partitionKey);
        }

        /// <summary>
        /// For the entities selected by the filter, updates the property field with the given value.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <typeparam name="TField">The type of the field.</typeparam>
        /// <param name="filter">The document filter.</param>
        /// <param name="field">The field selector.</param>
        /// <param name="value">The new value of the property field.</param>
        /// <param name="partitionKey">The partition key for the document.</param>
        public virtual async Task<long> UpdateManyAsync<TDocument, TKey, TField>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TField>> field, TField value, string partitionKey = null)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>
        {
            return await UpdateManyAsync<TDocument, TKey, TField>(Builders<TDocument>.Filter.Where(filter), field, value, partitionKey);
        }

        /// <summary>
        /// For the entities selected by the filter, updates the property field with the given value.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <typeparam name="TField">The type of the field.</typeparam>
        /// <param name="filter">The document filter.</param>
        /// <param name="field">The field selector.</param>
        /// <param name="value">The new value of the property field.</param>
        /// <param name="partitionKey">The value of the partition key.</param>
        public virtual async Task<long> UpdateManyAsync<TDocument, TKey, TField>(FilterDefinition<TDocument> filter, Expression<Func<TDocument, TField>> field, TField value, string partitionKey = null)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>
        {
            var collection = string.IsNullOrEmpty(partitionKey) ? GetCollection<TDocument, TKey>() : GetCollection<TDocument, TKey>(partitionKey);
            var updateRes = await collection.UpdateManyAsync(filter, Builders<TDocument>.Update.Set(field, value));
            return updateRes.ModifiedCount;
        }

        /// <summary>
        /// For the entities selected by the filter, apply the update definition.
        /// </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">The document filter.</param>
        /// <param name="field">The field selector.</param>
        /// <param name="value">The new value of the property field.</param>
        /// <param name="partitionKey">The value of the partition key.</param>
        public virtual async Task<long> UpdateManyAsync<TDocument, TKey>(Expression<Func<TDocument, bool>> filter, UpdateDefinition<TDocument> update, string partitionKey = null)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>
        {
            return await UpdateManyAsync<TDocument, TKey>(Builders<TDocument>.Filter.Where(filter), update, partitionKey);
        }

        /// <summary>
        /// For the entities selected by the filter, apply the update definition.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <typeparam name="TField">The type of the field.</typeparam>
        /// <param name="filter">The document filter.</param>
        /// <param name="updateDefinition">The update definition.</param>
        /// <param name="partitionKey">The value of the partition key.</param>
        public virtual async Task<long> UpdateManyAsync<TDocument, TKey>(FilterDefinition<TDocument> filter, UpdateDefinition<TDocument> updateDefinition, string partitionKey = null)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>
        {
            var collection = string.IsNullOrEmpty(partitionKey) ? GetCollection<TDocument, TKey>() : GetCollection<TDocument, TKey>(partitionKey);
            var updateRes = await collection.UpdateManyAsync(filter, updateDefinition, new UpdateOptions { IsUpsert = true });
            return updateRes.ModifiedCount;
        }

        /// <summary>
        /// For the entities selected by the filter, updates the property field with the given value.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <typeparam name="TField">The type of the field.</typeparam>
        /// <param name="filter">The document filter.</param>
        /// <param name="field">The field selector.</param>
        /// <param name="value">The new value of the property field.</param>
        /// <param name="partitionKey">The partition key for the document.</param>
        public virtual long UpdateMany<TDocument, TKey, TField>(Expression<Func<TDocument, bool>> filter, Expression<Func<TDocument, TField>> field, TField value, string partitionKey = null)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>
        {
            return UpdateMany<TDocument, TKey, TField>(Builders<TDocument>.Filter.Where(filter), field, value, partitionKey);
        }

        /// <summary>
        /// For the entities selected by the filter, updates the property field with the given value.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <typeparam name="TField">The type of the field.</typeparam>
        /// <param name="filter">The document filter.</param>
        /// <param name="field">The field selector.</param>
        /// <param name="value">The new value of the property field.</param>
        /// <param name="partitionKey">The value of the partition key.</param>
        public virtual long UpdateMany<TDocument, TKey, TField>(FilterDefinition<TDocument> filter, Expression<Func<TDocument, TField>> field, TField value, string partitionKey = null)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>
        {
            var collection = string.IsNullOrEmpty(partitionKey) ? GetCollection<TDocument, TKey>() : GetCollection<TDocument, TKey>(partitionKey);
            var updateRes = collection.UpdateMany(filter, Builders<TDocument>.Update.Set(field, value));
            return updateRes.ModifiedCount;
        }

        /// <summary>
        /// For the entities selected by the filter, apply the update definition.
        /// </summary>
        /// <typeparam name="TDocument">The type representing a Document.</typeparam>
        /// <typeparam name="TKey">The type of the primary key for a Document.</typeparam>
        /// <typeparam name="TField">The type of the field.</typeparam>
        /// <param name="filter">The document filter.</param>
        /// <param name="UpdateDefinition">The update definition.</param>
        /// <param name="partitionKey">The value of the partition key.</param>
        public virtual long UpdateMany<TDocument, TKey>(FilterDefinition<TDocument> filter, UpdateDefinition<TDocument> UpdateDefinition, string partitionKey = null)
            where TDocument : IDocument<TKey>
            where TKey : IEquatable<TKey>
        {
            var collection = string.IsNullOrEmpty(partitionKey) ? GetCollection<TDocument, TKey>() : GetCollection<TDocument, TKey>(partitionKey);
            var updateRes = collection.UpdateMany(filter, UpdateDefinition, new UpdateOptions { IsUpsert = true });
            return updateRes.ModifiedCount;
        }
    }
}