using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using System.Net.Http;
using Oqtane.Enums;
using Oqtane.Infrastructure;
using Oqtane.Models;
using Oqtane.Security;
using Oqtane.Shared;
using SZUAbsolventenverein.Module.HallOfFame.Repository;
using Microsoft.AspNetCore.Hosting;
using System.IO;
using System;

namespace SZUAbsolventenverein.Module.HallOfFame.Services
{
    public class ServerHallOfFameService : IHallOfFameService
    {
        private readonly IHallOfFameRepository _HallOfFameRepository;
        private readonly IUserPermissions _userPermissions;
        private readonly ILogManager _logger;
        private readonly IHttpContextAccessor _accessor;
        private readonly Alias _alias;
        private readonly IWebHostEnvironment _environment;

        public ServerHallOfFameService(IHallOfFameRepository HallOfFameRepository, IUserPermissions userPermissions, ITenantManager tenantManager, ILogManager logger, IHttpContextAccessor accessor, IWebHostEnvironment environment)
        {
            _HallOfFameRepository = HallOfFameRepository;
            _userPermissions = userPermissions;
            _logger = logger;
            _accessor = accessor;
            _alias = tenantManager.GetAlias();
            _environment = environment;
        }

        public Task<List<Models.HallOfFame>> GetHallOfFamesAsync(int ModuleId)
        {
            if (_userPermissions.IsAuthorized(_accessor.HttpContext.User, _alias.SiteId, EntityNames.Module, ModuleId, PermissionNames.View))
            {
                return Task.FromResult(_HallOfFameRepository.GetHallOfFames(ModuleId).ToList());
            }
            else
            {
                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized HallOfFame Get Attempt {ModuleId}", ModuleId);
                return null;
            }
        }

        public Task<Models.HallOfFame> GetHallOfFameAsync(int HallOfFameId, int ModuleId)
        {
            if (_userPermissions.IsAuthorized(_accessor.HttpContext.User, _alias.SiteId, EntityNames.Module, ModuleId, PermissionNames.View))
            {
                return Task.FromResult(_HallOfFameRepository.GetHallOfFame(HallOfFameId));
            }
            else
            {
                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized HallOfFame Get Attempt {HallOfFameId} {ModuleId}", HallOfFameId, ModuleId);
                return null;
            }
        }

        public Task<Models.HallOfFame> GetHallOfFameByUserIdAsync(int UserId, int ModuleId)
        {
            if (_userPermissions.IsAuthorized(_accessor.HttpContext.User, _alias.SiteId, EntityNames.Module, ModuleId, PermissionNames.View))
            {
                // Assuming Repository doesn't have specific method yet, using LINQ on GetHallOfFames
                return Task.FromResult(_HallOfFameRepository.GetHallOfFames(ModuleId).FirstOrDefault(item => item.UserId == UserId));
            }
            else
            {
                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized HallOfFame GetByUserId Attempt {UserId} {ModuleId}", UserId, ModuleId);
                return null;
            }
        }

        public Task<Models.HallOfFame> AddHallOfFameAsync(Models.HallOfFame HallOfFame)
        {
            if (_userPermissions.IsAuthorized(_accessor.HttpContext.User, _alias.SiteId, EntityNames.Module, HallOfFame.ModuleId, PermissionNames.Edit))
            {
                HallOfFame = _HallOfFameRepository.AddHallOfFame(HallOfFame);
                _logger.Log(LogLevel.Information, this, LogFunction.Create, "HallOfFame Added {HallOfFame}", HallOfFame);
            }
            else
            {
                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized HallOfFame Add Attempt {HallOfFame}", HallOfFame);
                HallOfFame = null;
            }
            return Task.FromResult(HallOfFame);
        }

        public Task<Models.HallOfFame> UpdateHallOfFameAsync(Models.HallOfFame HallOfFame)
        {
            if (_userPermissions.IsAuthorized(_accessor.HttpContext.User, _alias.SiteId, EntityNames.Module, HallOfFame.ModuleId, PermissionNames.Edit))
            {
                HallOfFame = _HallOfFameRepository.UpdateHallOfFame(HallOfFame);
                _logger.Log(LogLevel.Information, this, LogFunction.Update, "HallOfFame Updated {HallOfFame}", HallOfFame);
            }
            else
            {
                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized HallOfFame Update Attempt {HallOfFame}", HallOfFame);
                HallOfFame = null;
            }
            return Task.FromResult(HallOfFame);
        }

        public Task DeleteHallOfFameAsync(int HallOfFameId, int ModuleId)
        {
            if (_userPermissions.IsAuthorized(_accessor.HttpContext.User, _alias.SiteId, EntityNames.Module, ModuleId, PermissionNames.Edit))
            {
                _HallOfFameRepository.DeleteHallOfFame(HallOfFameId);
                _logger.Log(LogLevel.Information, this, LogFunction.Delete, "HallOfFame Deleted {HallOfFameId}", HallOfFameId);
            }
            else
            {
                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized HallOfFame Delete Attempt {HallOfFameId} {ModuleId}", HallOfFameId, ModuleId);
            }
            return Task.CompletedTask;
        }

        public Task ReportAsync(int HallOfFameId, int ModuleId, string reason)
        {
            if (_userPermissions.IsAuthorized(_accessor.HttpContext.User, _alias.SiteId, EntityNames.Module, ModuleId, PermissionNames.View))
            {
                var report = new Models.HallOfFameReport
                {
                    HallOfFameId = HallOfFameId,
                    Reason = reason
                };
                _HallOfFameRepository.AddHallOfFameReport(report);

                var hallOfFame = _HallOfFameRepository.GetHallOfFame(HallOfFameId);
                if (hallOfFame != null && !hallOfFame.IsReported)
                {
                    hallOfFame.IsReported = true;
                    _HallOfFameRepository.UpdateHallOfFame(hallOfFame);
                }
                _logger.Log(LogLevel.Information, this, LogFunction.Update, "HallOfFame Reported {HallOfFameId}", HallOfFameId);
            }
            else
            {
                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized HallOfFame Report Attempt {HallOfFameId} {ModuleId}", HallOfFameId, ModuleId);
            }
            return Task.CompletedTask;
        }

        public Task<List<Models.HallOfFameReport>> GetHallOfFameReportsAsync(int HallOfFameId, int ModuleId)
        {
            if (_userPermissions.IsAuthorized(_accessor.HttpContext.User, _alias.SiteId, EntityNames.Module, ModuleId, PermissionNames.Edit))
            {
                return Task.FromResult(_HallOfFameRepository.GetHallOfFameReports(HallOfFameId).ToList());
            }
            else
            {
                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized HallOfFame Get Reports Attempt {HallOfFameId} {ModuleId}", HallOfFameId, ModuleId);
                return null;
            }
        }

        public Task DeleteHallOfFameReportAsync(int HallOfFameReportId, int ModuleId)
        {
            if (_userPermissions.IsAuthorized(_accessor.HttpContext.User, _alias.SiteId, EntityNames.Module, ModuleId, PermissionNames.Edit))
            {
                var report = _HallOfFameRepository.GetHallOfFameReport(HallOfFameReportId);
                if (report != null)
                {
                    int hallOfFameId = report.HallOfFameId;
                    _HallOfFameRepository.DeleteHallOfFameReport(HallOfFameReportId);

                    // Check if there are any reports left for this entry
                    var remainingReports = _HallOfFameRepository.GetHallOfFameReports(hallOfFameId);
                    if (!remainingReports.Any())
                    {
                        var hallOfFame = _HallOfFameRepository.GetHallOfFame(hallOfFameId);
                        if (hallOfFame != null)
                        {
                            hallOfFame.IsReported = false;
                            _HallOfFameRepository.UpdateHallOfFame(hallOfFame);
                        }
                    }
                }
                _logger.Log(LogLevel.Information, this, LogFunction.Delete, "HallOfFame Report Deleted {HallOfFameReportId}", HallOfFameReportId);
            }
            else
            {
                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized HallOfFame Delete Report Attempt {HallOfFameReportId} {ModuleId}", HallOfFameReportId, ModuleId);
            }
            return Task.CompletedTask;
        }
        public async Task<string> UploadFileAsync(Stream stream, string fileName, int ModuleId)
        {
            if (_userPermissions.IsAuthorized(_accessor.HttpContext.User, _alias.SiteId, EntityNames.Module, ModuleId, PermissionNames.Edit))
            {
                var extension = Path.GetExtension(fileName).ToLower();

                if (extension != ".jpg" && extension != ".jpeg" && extension != ".png")
                {
                    return null;
                }

                var folder = Path.Combine(_environment.WebRootPath, "Content", "HallOfFame");
                if (!Directory.Exists(folder))
                {
                    Directory.CreateDirectory(folder);
                }

                var newFileName = Guid.NewGuid().ToString() + extension;
                var path = Path.Combine(folder, newFileName);

                using (var fileStream = new FileStream(path, FileMode.Create))
                {
                    await stream.CopyToAsync(fileStream);
                }

                return "/Content/HallOfFame/" + newFileName;
            }
            return null;
        }
    }
}