using AutoMapper;
using Azure;
using DamageAssesment.Api.Attachments.Db;
using DamageAssesment.Api.Attachments.Interfaces;
using DamageAssesment.Api.Attachments.Models;
using Microsoft.AspNetCore.Http;
using System.Diagnostics.Metrics;
using System.Net.Http;
using System.Security.AccessControl;
using System.Security.Principal;

namespace DamageAssesment.Api.Attachments.Providers
{
    public class UploadService : IUploadService
    {
        private ILogger<UploadService> logger;
        private IMapper mapper;
        private string uploadpath = "";
        private string Deletepath = "";
        public UploadService(IConfiguration configuration, ILogger<UploadService> logger, IMapper mapper)
        {
            this.logger = logger;
            this.mapper = mapper;
            uploadpath = configuration.GetValue<string>("Fileupload:folderpath");
            Deletepath = configuration.GetValue<string>("Fileupload:Deletepath");
        }
        public List<Models.Attachment> UploadAttachment(int responseId,int answerId,int counter, List<IFormFile> postedFile)
        {
            var pathToSave = Path.Combine(Directory.GetCurrentDirectory(), uploadpath);
            String responseDirectory = "Response-" + responseId;
            String fullDirectoryPath = Path.Combine(pathToSave, responseDirectory);
            if (!Directory.Exists(fullDirectoryPath)) //Create deirectory if does not exist
                Directory.CreateDirectory(fullDirectoryPath);
            fullDirectoryPath = Path.Combine(fullDirectoryPath, "Answer-" + answerId);
            if (!Directory.Exists(fullDirectoryPath)) //Create deirectory if does not exist
                Directory.CreateDirectory(fullDirectoryPath);
            String[] searchFiles = Directory.GetFiles(fullDirectoryPath); //Search for existing answer files
            if (searchFiles.Length > 0)
            {
                foreach (String searchFile in searchFiles)
                {
                    Deletefile(searchFile);
                }
            }
            List<Models.Attachment> attachments = new List<Models.Attachment>();
            foreach (IFormFile item in postedFile)
            {
                
                counter++;
                var UserfileName = Path.GetFileName(item.FileName);
                var extension = System.IO.Path.GetExtension(UserfileName);
                var fileName = String.Format("Attachment_{0}{1}", counter, extension);
                var dbPath = Path.Combine(fullDirectoryPath, fileName);
                using (var stream = new FileStream(dbPath, FileMode.Create, FileAccess.ReadWrite))
                {
                    item.CopyTo(stream);
                }
                attachments.Add(new Models.Attachment { AnswerId = answerId, ResponseId = responseId, IsDeleted = false, FileName = UserfileName, URI = dbPath });
            }

            return attachments;
        }

        public List<Models.Attachment> UploadAttachment(int responseId, int counter,List<AnswerInfo> answers)
        {
            List<Models.Attachment> attachments = new List<Models.Attachment>();
            try
            {
                foreach (var item in answers)
                {
                    int answerId = item.AnswerId;
                    var pathToSave = Path.Combine(Directory.GetCurrentDirectory(), uploadpath);
                    String responseDirectory = "Response-" + responseId;
                    String fullDirectoryPath = Path.Combine(pathToSave, responseDirectory);
                    if (!Directory.Exists(fullDirectoryPath)) //Create deirectory if does not exist
                        Directory.CreateDirectory(fullDirectoryPath);
                    fullDirectoryPath = Path.Combine(fullDirectoryPath, "Answer-" + answerId);
                    if (!Directory.Exists(fullDirectoryPath)) //Create deirectory if does not exist
                        Directory.CreateDirectory(fullDirectoryPath);
                    //String[] searchFiles = Directory.GetFiles(fullDirectoryPath); //Search for existing answer files
                    //if (searchFiles.Length > 0)
                    //{
                    //    foreach (String searchFile in searchFiles)
                    //    {
                    //        Deletefile(searchFile);
                    //    }
                    //}
                    foreach (var file in item.postedFiles)
                    {
                        counter++;

                        var UserfileName = Path.GetFileName(file.FileName);
                        var fileName = String.Format("Attachment_{0}{1}", counter, file.FileExtension);
                        var dbPath = Path.Combine(fullDirectoryPath, fileName);
                        File.WriteAllBytes(dbPath, Convert.FromBase64String(file.FileContent));

                        attachments.Add(new Models.Attachment { AnswerId = answerId, ResponseId = responseId, IsDeleted = false, FileName = UserfileName, URI = dbPath });
                    }
                }
                return attachments;
            }
            catch (Exception ex) {
                return new List<Models.Attachment>();
            }

           
        }
        public List<Models.Attachment> UpdateAttachments(int responseId,List<AnswerInfo> answers,IEnumerable<Models.Attachment> attachments)
        {
            List<Models.Attachment> Dbattachments = new List<Models.Attachment>();
            foreach (Models.Attachment searchFile in attachments)
            {
                Deletefile(searchFile.URI);
            }
            foreach (var item in answers)
            {
                int answerId = item.AnswerId;
                var pathToSave = Path.Combine(Directory.GetCurrentDirectory(), uploadpath);
                String responseDirectory = "Response-" + responseId;
                String fullDirectoryPath = Path.Combine(pathToSave, responseDirectory);
                if (!Directory.Exists(fullDirectoryPath)) //Create deirectory if does not exist
                    Directory.CreateDirectory(fullDirectoryPath);
                fullDirectoryPath = Path.Combine(fullDirectoryPath, "Answer-" + answerId);
                if (!Directory.Exists(fullDirectoryPath)) //Create deirectory if does not exist
                    Directory.CreateDirectory(fullDirectoryPath);                
                foreach (var file in item.postedFiles)
                {
                    Models.Attachment attachment= attachments.Where(a=>a.Id == file.AttachmentId).FirstOrDefault();
                    var UserfileName = Path.GetFileName(file.FileName);
                    var fileName = String.Format("Attachment_{0}{1}", attachment?.Id, file.FileExtension);
                    var dbPath = Path.Combine(fullDirectoryPath, fileName);
                    File.WriteAllBytes(dbPath, Convert.FromBase64String(file.FileContent));

                    Dbattachments.Add(new Models.Attachment { Id=attachment.Id, AnswerId = answerId, ResponseId = responseId, IsDeleted = false, FileName = UserfileName, URI = dbPath });
                }
            }
            return Dbattachments;
        }
        public void Deletefile(string path)
        {
            if (path != "")
            {
                FileInfo file = new FileInfo(path);
                if (file?.Exists??false)//check file exsit or not  
                {
                    file.Delete();
                }
            }
        }
        public void Movefile(string path)
        {
            if (path != "")
            {
                var pathToSave = Path.Combine(Directory.GetCurrentDirectory(), Deletepath);
                if (!Directory.Exists(pathToSave)) //Create deirectory if does not exist
                    Directory.CreateDirectory(pathToSave);
                FileInfo file = new FileInfo(path);
                if (file?.Exists ?? false)//check file exsit or not  
                {
                    string filename = file.Name.Replace(file.Extension, " ") + DateTime.Now.ToShortDateString().Replace("/","_") + file.Extension;
                    file.MoveTo(pathToSave+"\\"+ filename);
                }
            }
        }
    }
}