using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace PDF_Merge
{
    public partial class ConfForm : Form
    {
        public ConfForm()
        {
            InitializeComponent();

            string sourcePath = ConfigurationManager.AppSettings["PDF-Path"] ?? "";
            string outputPath = ConfigurationManager.AppSettings["PDF-Output"] ?? "";
            string outputName = ConfigurationManager.AppSettings["PDF-Name"] ?? "merged";
            string outputExt = ConfigurationManager.AppSettings["PDF-Extension"] ?? ".pdf";
            string dateIndex = ConfigurationManager.AppSettings["dateIndex"] ?? "0";

            int dateIndexValue;

            bool indexSet = int.TryParse(dateIndex, out dateIndexValue);
            if (indexSet)
            {
                dateFormatOpts.SelectedIndex = dateIndexValue;
            } else
            {
                dateFormatOpts.SelectedIndex = 0;
            }

            sourceBox.Text = sourcePath;
            outputBox.Text = outputPath;
            FileNameBox.Text = outputName;
            fileExtlabel.Text = outputExt;
            
            if (ConfigurationManager.AppSettings["overwrite"] == true.ToString())
            {
                overrideCBox.Checked = true;
            }
            else
            {
                overrideCBox.Checked = false;
            }
            if (ConfigurationManager.AppSettings["appendDate"] == true.ToString())
            {
                appendDatecheckBox.Checked = true;
            }
            else
            {
                appendDatecheckBox.Checked = false;
            }
            CheckAppend();
        }

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

        private void SaveBtn_Click(object sender, EventArgs e)
        {
            Configuration appConfig = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
            AppSettingsSection appSettings = appConfig.AppSettings;
            if (sourceBox.Text.Length > 0)
            {
                appSettings.Settings["PDF-Path"].Value = sourceBox.Text;
            }
            else
            {
                MessageBox.Show("Source path cannot be empty.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            if (outputBox.Text.Length > 0)
            {
                appSettings.Settings["PDF-Output"].Value = outputBox.Text;
            }
            else
            {
                MessageBox.Show("Output path cannot be empty.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            if (FileNameBox.Text.Length > 0)
            {
                appSettings.Settings["PDF-Name"].Value = FileNameBox.Text;
            }
            else
            {
                MessageBox.Show("File must be named.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            appSettings.Settings["overwrite"].Value = overrideCBox.Checked.ToString();
            appSettings.Settings["appendDate"].Value = appendDatecheckBox.Checked.ToString();
            appSettings.Settings["dateFormat"].Value = dateFormatOpts.SelectedItem.ToString();
            appSettings.Settings["dateIndex"].Value = dateFormatOpts.SelectedIndex.ToString();
            appConfig.Save(ConfigurationSaveMode.Modified);
            ConfigurationManager.RefreshSection("appSettings");
            this.Close();
        }

        private void SourceDirBtn_Click(object sender, EventArgs e)
        {
            using (var SourceDirPicker = new FolderBrowserDialog())
            {
                if (sourceBox.Text == "")
                {
                    SourceDirPicker.RootFolder = Environment.SpecialFolder.MyDocuments;
                }
                else
                {
                    string startingDir = sourceBox.Text;
                    SourceDirPicker.SelectedPath = startingDir;
                }
                if (SourceDirPicker.ShowDialog() == DialogResult.OK)
                {
                    var sourceDir = SourceDirPicker.SelectedPath;
                    sourceBox.Text = sourceDir;
                }
            }
        }

        private void OutPathBtn_Click(object sender, EventArgs e)
        {
            using (var OutPathPicker = new FolderBrowserDialog())
            {
                OutPathPicker.RootFolder = Environment.SpecialFolder.Desktop;
                if (OutPathPicker.ShowDialog() == DialogResult.OK)
                {
                    var OutPath = OutPathPicker.SelectedPath;
                    outputBox.Text = OutPath;
                }
            }
        }

        private void AppendDatecheckBox_CheckedChanged(object sender, EventArgs e)
        {
            CheckAppend();
        }
        private void CheckAppend()
        {
            if (appendDatecheckBox.Checked)
            {
                dateFormatOpts.Visible = true;
            }
            else
            {
                dateFormatOpts.Visible = false;
            }
        }
    }
}