// ***********************************************************************
// <copyright file="PermissionService.cs">
//     AgileWebs
// </copyright>
// ***********************************************************************

using Core.Blueprint.Mongo;
using Core.Blueprint.Redis;
using Core.Blueprint.Redis.Helpers;
using Core.Thalos.BuildingBlocks;
using Core.Thalos.Domain.Contexts.Onboarding.Request;
using Core.Thalos.Provider.Contracts;
using Mapster;
using MongoDB.Driver;

namespace Core.Thalos.Provider.Providers.Onboarding
{
    /// <summary>
    /// Handles all services and business rules related to <see cref="PermissionAdapter"/>.
    /// </summary>
    public class PermissionProvider : IPermissionProvider
    {
        private readonly CollectionRepository<PermissionAdapter> repository;
        private readonly ICacheSettings cacheSettings;
        private readonly IRedisCacheProvider cacheProvider;

        public PermissionProvider(
            CollectionRepository<PermissionAdapter> repository,
            IRedisCacheProvider cacheProvider,
            ICacheSettings cacheSettings)
        {
            this.repository = repository;
            this.repository.CollectionInitialization();
            this.cacheProvider = cacheProvider;
            this.cacheSettings = cacheSettings;
        }

        /// <summary>
        /// Creates a new Permission.
        /// </summary>
        /// <param name="newPermission">The Permission to be created.</param>
        /// <param name="cancellationToken">A token to cancel the asynchronous operation.</param>
        /// <returns>
        /// A <see cref="ValueTask{PermissionAdapter}"/> representing the asynchronous execution of the service.
        /// </returns>
        public async ValueTask<PermissionAdapter> CreatePermission(PermissionRequest newPermission, CancellationToken cancellationToken)
        {
            var permissionCollection = newPermission.Adapt<PermissionAdapter>();
            await repository.InsertOneAsync(permissionCollection);
            return permissionCollection;
        }

        /// <summary>
        /// Gets a Permission by identifier.
        /// </summary>
        /// <param name="_id">The Permission Mongo identifier.</param>
        /// <param name="cancellationToken">A token to cancel the asynchronous operation.</param>
        /// <returns>
        /// A <see cref="ValueTask{PermissionAdapter}"/> representing the asynchronous execution of the service.
        /// </returns>
        public async ValueTask<PermissionAdapter> GetPermissionById(string _id, CancellationToken cancellationToken)
        {
            var cacheKey = CacheKeyHelper.GenerateCacheKey(this, "GetPermissionById", _id);
            var cachedData = await cacheProvider.GetAsync<PermissionAdapter>(cacheKey);

            if (cachedData is not null) return cachedData;

            var permission = await repository.FindByIdAsync(_id);
            await cacheProvider.SetAsync(cacheKey, permission);

            return permission;
        }

        /// <summary>
        /// Gets all Permissions.
        /// </summary>
        /// <param name="cancellationToken">A token to cancel the asynchronous operation.</param>
        /// <returns>
        /// A <see cref="ValueTask{IEnumerable{PermissionAdapter}}"/> representing the asynchronous execution of the service.
        /// </returns>
        public async ValueTask<IEnumerable<PermissionAdapter>> GetAllPermissions(CancellationToken cancellationToken)
        {
            var cacheKey = CacheKeyHelper.GenerateCacheKey(this, "GetAllPermissions");
            var cachedData = await cacheProvider.GetAsync<IEnumerable<PermissionAdapter>>(cacheKey) ?? [];

            if (cachedData.Any()) return cachedData;

            var permissions = await repository.AsQueryable();
            await cacheProvider.SetAsync(cacheKey, permissions, TimeSpan.FromMinutes(cacheSettings.DefaultCacheDurationInMinutes));

            return permissions;
        }

        /// <summary>
        /// Gets all Permissions by a list of identifiers.
        /// </summary>
        /// <param name="permissions">The list of Permission identifiers.</param>
        /// <param name="cancellationToken">A token to cancel the asynchronous operation.</param>
        /// <returns>
        /// A <see cref="ValueTask{IEnumerable{PermissionAdapter}}"/> representing the asynchronous execution of the service.
        /// </returns>
        public async ValueTask<IEnumerable<PermissionAdapter>> GetAllPermissionsByList(string[] permissions, CancellationToken cancellationToken)
        {
            var cacheKey = CacheKeyHelper.GenerateCacheKey(this, "GetAllPermissionsByList", permissions);
            var cachedData = await cacheProvider.GetAsync<IEnumerable<PermissionAdapter>>(cacheKey) ?? [];

            if (cachedData.Any()) return cachedData;

            var builder = Builders<PermissionAdapter>.Filter;
            var filters = new List<FilterDefinition<PermissionAdapter>>();

            if (permissions is { Length: > 0 })
            {
                filters.Add(builder.In(x => x._Id, permissions));
            }

            var finalFilter = filters.Any() ? builder.And(filters) : builder.Empty;
            var permissionsList = await repository.FilterByMongoFilterAsync(finalFilter);

            await cacheProvider.SetAsync(cacheKey, permissionsList, TimeSpan.FromMinutes(cacheSettings.DefaultCacheDurationInMinutes));
            return permissionsList;
        }

        /// <summary>
        /// Changes the status of a Permission.
        /// </summary>
        /// <param name="_id">The Permission Mongo identifier.</param>
        /// <param name="newStatus">The new status of the Permission.</param>
        /// <param name="cancellationToken">A token to cancel the asynchronous operation.</param>
        /// <returns>
        /// A <see cref="ValueTask{PermissionAdapter}"/> representing the asynchronous execution of the service.
        /// </returns>
        public async ValueTask<PermissionAdapter?> ChangePermissionStatus(string _id, Blueprint.Mongo.StatusEnum newStatus, CancellationToken cancellationToken)
        {
            var entity = await repository.FindByIdAsync(_id);

            if (entity is not null)
            {
                entity.Status = newStatus;

                return repository.ReplaceOneAsync(entity).Result;
            }
            else return null;
        }

        /// <summary>
        /// Updates a Permission.
        /// </summary>
        /// <param name="entity">The Permission to be updated.</param>
        /// <param name="cancellationToken">A token to cancel the asynchronous operation.</param>
        /// <returns>
        /// A <see cref="ValueTask{PermissionAdapter}"/> representing the asynchronous execution of the service.
        /// </returns>
        public async ValueTask<PermissionAdapter?> UpdatePermission(PermissionAdapter entity, CancellationToken cancellationToken)
        {
            var updatedEntity = await repository.ReplaceOneAsync(entity);
            return updatedEntity;
        }

        /// <summary>
        /// Deletes a Permission by identifier.
        /// </summary>
        /// <param name="_id">The Permission Mongo identifier.</param>
        /// <param name="cancellationToken">A token to cancel the asynchronous operation.</param>
        /// <returns>
        /// A <see cref="ValueTask{PermissionAdapter}"/> representing the asynchronous deletion result.
        /// The deleted Permission entity if found; otherwise, null.
        /// </returns>
        public async ValueTask<PermissionAdapter?> DeletePermission(string _id, CancellationToken cancellationToken)
        {
            var entity = await this.repository.DeleteOneAsync(doc => doc._Id == _id);
            return entity;
        }
    }
}