// ***********************************************************************
// <copyright file="PermissionService.cs">
//     AgileWebs
// </copyright>
// ***********************************************************************
using Core.Cerberos.Adapters;
using Core.Cerberos.Adapters.Common.Constants;
using Core.Cerberos.Adapters.Common.Enums;
using Core.Cerberos.Domain.Contexts.Onboarding.Mappers;
using Core.Cerberos.Domain.Contexts.Onboarding.Request;
using Core.Cerberos.Infraestructure.Caching.Configs;
using Core.Cerberos.Infraestructure.Caching.Contracts;
using Core.Cerberos.Provider.Contracts;
using LSA.Core.Dapper.Service.Caching;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using MongoDB.Bson;
using MongoDB.Driver;

namespace Core.Cerberos.Provider.Providers.Onboarding
{
    /// <summary>
    /// Handles all services and business rules related to <see cref="PermissionAdapter"/>.
    /// </summary>
    public class PermissionService(ILogger<PermissionService> logger, IHttpContextAccessor httpContextAccessor, ICacheService cacheService,
        IOptions<CacheSettings> cacheSettings, IMongoDatabase database) : IPermissionService
    {
        private readonly CacheSettings _cacheSettings = cacheSettings.Value;

        /// <summary>
        /// Creates a new Permission.
        /// </summary>
        /// <param name="entity">The Permission to be created.</param>
        /// <returns>A <see cref="{Task{PermissionAdapter}}"/> representing
        /// the asynchronous execution of the service.</returns>
        public async Task<PermissionAdapter> CreatePermissionService(PermissionRequest newPermission)
        {
            try
            {
                var entity = newPermission.ToAdapter(httpContextAccessor);
                await database.GetCollection<PermissionAdapter>(CollectionNames.Permission).InsertOneAsync(entity);
                entity.Id = (entity as dynamic ?? "").Id.ToString();

                return entity;
            }
            catch (Exception ex)
            {
                logger.LogError(ex, $"CreatePermissionService: Error in getting data - {ex.Message}");
                throw new Exception(ex.Message, ex);
            }
        }

        /// <summary>
        /// Gets an Permission by identifier.
        /// </summary>
        /// <param name="id">The Permission identifier.</param>
        /// <returns>A <see cref="{Task{PermissionAdapter}}"/> representing
        /// the asynchronous execution of the service.</returns>0
        public async Task<PermissionAdapter> GetPermissionByIdService(string id)
        {
            var cacheKey = CacheKeyHelper.GenerateCacheKey(this, "GetPermissionByIdService", id);
            var cachedData = await cacheService.GetAsync<PermissionAdapter>(cacheKey);

            if (cachedData is not null) { return cachedData; }

            try
            {
                var filter = Builders<PermissionAdapter>.Filter.And(
                    Builders<PermissionAdapter>.Filter.Eq("_id", ObjectId.Parse(id)),
                    Builders<PermissionAdapter>.Filter.Eq("status", StatusEnum.Active.ToString())
                );

                var permission = await database.GetCollection<PermissionAdapter>(CollectionNames.Permission)
                                    .Find(filter)
                                    .FirstOrDefaultAsync();

                var cacheDuration = CacheHelper.GetCacheDuration(_cacheSettings);

                await cacheService.SetAsync(cacheKey, permission, cacheDuration);

                return permission;
            }
            catch (Exception ex)
            {
                logger.LogError(ex, $"GetPermissionByIdService: Error in getting data - {ex.Message}");
                throw new Exception(ex.Message, ex);
            }
        }

        /// <summary>
        /// Gets all the permissions.
        /// </summary>
        /// <returns>A <see cref="{Task{IEnumerbale{PermissionAdapter}}}"/> representing
        /// the asynchronous execution of the service.</returns>
        public async Task<IEnumerable<PermissionAdapter>> GetAllPermissionsService()
        {
            var cacheKey = CacheKeyHelper.GenerateCacheKey(this, "GetAllPermissionsService");
            var cachedData = await cacheService.GetAsync<IEnumerable<PermissionAdapter>>(cacheKey) ?? [];

            if (cachedData.Any()) return cachedData;

            try
            {
                var filter = Builders<PermissionAdapter>.Filter.Eq("status", StatusEnum.Active.ToString());

                var roles = await database.GetCollection<PermissionAdapter>(CollectionNames.Permission)
                                    .Find(filter)
                                    .ToListAsync();

                var cacheDuration = CacheHelper.GetCacheDuration(_cacheSettings);

                await cacheService.SetAsync(cacheKey, roles, cacheDuration);

                return roles;
            }
            catch (Exception ex)
            {
                logger.LogError(ex, $"GetAllPermissionsService: Error in getting data - {ex.Message}");
                throw new Exception(ex.Message, ex);
            }
        }

        /// <summary>
        /// Gets all the permissions by permissions identifier list.
        /// </summary>
        /// <param name="permissions">The list of permissions identifiers.</param>
        /// <returns>A <see cref="Task{IEnumerable{PermissionAdapter}}"/> representing
        /// the asynchronous execution of the service.</returns>
        public async Task<IEnumerable<PermissionAdapter>> GetAllPermissionsByListService(string[] permissions)
        {
            var cacheKey = CacheKeyHelper.GenerateCacheKey(this, "GetAllPermissionsByListService", permissions);

            var cachedData = await cacheService.GetAsync<IEnumerable<PermissionAdapter>>(cacheKey);

            if (cachedData != null && cachedData.Any()) return cachedData;

            try
            {
                var objectIds = permissions.Select(id => ObjectId.Parse(id)).ToArray();

                var filter = Builders<PermissionAdapter>.Filter.In("_id", objectIds)
                                & Builders<PermissionAdapter>.Filter.Eq("status", StatusEnum.Active.ToString());

                var roles = await database.GetCollection<PermissionAdapter>(CollectionNames.Permission)
                                          .Find(filter)
                                          .ToListAsync();

                var cacheDuration = CacheHelper.GetCacheDuration(_cacheSettings);

                await cacheService.SetAsync(cacheKey, roles, cacheDuration);

                return roles;
            }
            catch (Exception ex)
            {
                logger.LogError(ex, $"GetAllPermissionsByListService: Error in getting data - {ex.Message}");
                throw new Exception(ex.Message, ex);
            }
        }


        /// <summary>
        /// Changes the status of the permission.
        /// </summary>
        /// <param name="id">The permission identifier.</param>
        /// <param name="newStatus">The new status of the permission.</param>
        /// <returns>A <see cref="{Task{PermissionAdapter}}"/> representing
        /// the asynchronous execution of the service.</returns>
        public async Task<PermissionAdapter> ChangePermissionStatusService(string id, StatusEnum newStatus)
        {
            try
            {
                var filter = Builders<PermissionAdapter>.Filter
                    .Eq("_id", ObjectId.Parse(id));

                var update = Builders<PermissionAdapter>.Update
                            .Set(v => v.Status, newStatus)
                            .Set(v => v.UpdatedBy, Helper.GetEmail(httpContextAccessor))
                            .Set(v => v.UpdatedAt, DateTime.UtcNow);

                await database.GetCollection<PermissionAdapter>(CollectionNames.Permission).UpdateOneAsync(filter, update);

                var updatedPermission = await database.GetCollection<PermissionAdapter>(CollectionNames.Permission)
                                    .Find(filter)
                                    .FirstOrDefaultAsync();

                return updatedPermission;
            }
            catch (Exception ex)
            {
                logger.LogError(ex, $"ChangePermissionStatusService: Error in getting data - {ex.Message}");
                throw new Exception(ex.Message, ex);
            }
        }

        /// <summary>
        /// Updates a Permission by id.
        /// </summary>
        /// <param name="entity">The Permission to be updated.</param>
        /// <param name="id">The Permission identifier.</param>
        /// <returns>A <see cref="{Task{PermissionAdapter}}"/> representing
        /// the asynchronous execution of the service.</returns>
        public async Task<PermissionAdapter> UpdatePermissionService(PermissionAdapter entity, string id)
        {
            try
            {
                var filter = Builders<PermissionAdapter>.Filter
                    .Eq("_id", ObjectId.Parse(id));

                var update = Builders<PermissionAdapter>.Update
                            .Set(v => v.Name, entity.Name)
                            .Set(v => v.Description, entity.Description)
                            .Set(v => v.AccessLevel, entity.AccessLevel)
                            .Set(v => v.Status, entity.Status)
                            .Set(v => v.UpdatedBy, Helper.GetEmail(httpContextAccessor))
                            .Set(v => v.UpdatedAt, DateTime.UtcNow);

                await database.GetCollection<PermissionAdapter>(CollectionNames.Permission).UpdateOneAsync(filter, update);

                var updatedPermission = await database.GetCollection<PermissionAdapter>(CollectionNames.Permission)
                                            .Find(filter)
                                            .FirstOrDefaultAsync();

                return updatedPermission;
            }
            catch (Exception ex)
            {
                logger.LogError(ex, $"UpdatePermissionService: Error in getting data - {ex.Message}");
                throw new Exception(ex.Message, ex);
            }
        }
    }
}