using DataDomain;
using Helpers;
using SqliteBackups.Interfaces;
using StockDAL.Interface;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace StockInfo
{
    public partial class frmBackup : Form
    {
        private readonly IBackupRepository _backupRepository;
        private readonly IBackupRoutines _backupRoutines;
        public List<BackupRegister> CurrentBackups { get; set; } = new List<BackupRegister>();
        public frmBackup(IBackupRepository backupRepository,IBackupRoutines backupRoutines)
        {
            InitializeComponent();
            _backupRepository = backupRepository;
            _backupRoutines = backupRoutines;
        }

        private void btnChooseBackupDest_Click(object sender, EventArgs e)
        {
            sfdChoosePlaceAndFile.Filter = "Database files (*.db)|*.db|All files (*.*)|*.*";
            if (sfdChoosePlaceAndFile.ShowDialog() == DialogResult.OK)
            {
                var wholeFile = sfdChoosePlaceAndFile.FileName;
                var lastBackslash = wholeFile.LastIndexOf('\\') + 1;
                var dir = wholeFile.Substring(0, lastBackslash);
                var file = wholeFile.Substring(lastBackslash, wholeFile.Length - lastBackslash);
                //Debug.WriteLine($"Chosen file:{wholeFile}");
                //Debug.WriteLine($"Path: {dir} , File {file}");
                BackupRegister reg = new();
                reg.BackupDbName = file;
                reg.BackupPath = dir;
                reg = _backupRepository.SaveBackupReging(reg);
                txtBackupPath.Text = dir;
                txtBackupFile.Text = file;
                _backupRoutines.BackupSqliteDb(reg.DbName, Path.Combine(dir, file));
                var cmbItem = new ComboboxItem($"{reg.BackedUp.ToLocalTime()} {wholeFile}", reg.Id);
                lstBackups.Items.Add(cmbItem);
                CurrentBackups = _backupRepository.GetAllBackupRegisters().ToList();
            };

        }

        private void btnClose_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void frmBackup_Shown(object sender, EventArgs e)
        {
            CurrentBackups =_backupRepository.GetAllBackupRegisters().ToList();
            lstBackups.Items.Clear();
            foreach(var bckrg in CurrentBackups)
            {
                var cmbItem = new ComboboxItem($"{bckrg.BackedUp.ToLocalTime()} {Path.Combine(bckrg.BackupPath, bckrg.BackupDbName)}", bckrg.Id);
                lstBackups.Items.Add(cmbItem);
            }
        }

        private void btnRestore_Click(object sender, EventArgs e)
        {
            if (lstBackups.SelectedIndex != -1)
            {
                BackupRegister br = new();
                br.Id = ((ComboboxItem)lstBackups.SelectedItem).HiddenValue; 
                var backupReg = _backupRepository.GetBackupRegisterById(br.Id);
                if (File.Exists(backupReg.DbName))
                {
                    File.Move(backupReg.DbName, "tempFile.bak",true);
                }
                _backupRoutines.BackupSqliteDb(Path.Combine(backupReg.BackupPath, backupReg.BackupDbName), backupReg.DbName);
                UpdateBackupRegs(CurrentBackups);
                MessageBox.Show($"Backup {Path.Combine(backupReg.BackupPath, backupReg.BackupDbName)} loaded !");
            }
        }

        private void UpdateBackupRegs(List<BackupRegister> currentBackups)
        {
            var backupRegs = _backupRepository.GetAllBackupRegisters();
            var result = currentBackups.Where(cb => backupRegs.All(br => br.BackupDbName != cb.BackupDbName || br.BackupPath != cb.BackupPath));
            foreach(var br in result)
            {
                _backupRepository.SaveBackupReging(new BackupRegister
                {
                    BackedUp = br.BackedUp,
                    BackupDbName = br.BackupDbName,
                    BackupPath = br.BackupPath,
                    DbName = br.DbName,
                    Id = 0
                });
            }
        }
    }
}