source: extensions/Picasa2Piwigo/Picasa2Piwigo/Form1.cs @ 32008

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Net;
using System.Xml;

namespace Picasa2Piwigo
{
    using Picasa2PiwigoConstants;
    public partial class Form1 : Form
    {        
        string[] command_line_args;
        XmlDocument AlbumList = new XmlDocument();
        public struct AlbumListStruct
        {
            public string album_name;
            public string full_album_path;
            public int album_index;
            public string album_parent_chain;
        }
        AlbumListStruct[] album_list_array = new AlbumListStruct[1024];
        int album_count;

        public Form1(string[] args)
        {
            InitializeComponent();
            command_line_args = args;
        }

        private void Form1_Load(object sender, EventArgs e)
        {
           
            this.SyncButton.Enabled = false;
            this.Show();
            this.Refresh();

            //if no arguments then exit
            if (command_line_args.Length == 0)
            {
                return;
            }
            AccessComboBox.SelectedIndex = Form1Settings.Default.AccessSetting;
            this.SyncButton.Enabled = true;
            //determine album name, if possible
            AlbumNameTextBox.Text = DetermineAlbumNameFromCommandLine(command_line_args[0]);

            if (FormSettings.Default.PiwigoUrlSetting.Length == 0 ||
                FormSettings.Default.PicasaContactsLocation.Length == 0)
            {
                MessageBox.Show("Set up your Piwigo Server Connection using the Options button.", "Picasa2Piwigo");
                return;
            }

            //ok to try to login etc
            LoginBuildAlbumList();

            //populate album listbox
            PopulateAlbumListBox();
        }

        private void SyncButton_Click(object sender, EventArgs e)
        {
            DialogResult result;

            if (NewAlbumRadioButton.Checked)
            {
                if (AlbumNameTextBox.Text.Length == 0)
                {
                    MessageBox.Show("Error:  Blank Album Name");
                    return;
                }            
                GlobalClass.NewAlbumName = AlbumNameTextBox.Text;
                if (NewAlbumParentAlbumComboBox.SelectedIndex == -1)
                {
                    GlobalClass.NewAlbumNameParentID = -1;
                }
                else
                {
                    GlobalClass.NewAlbumNameParentID = album_list_array[NewAlbumParentAlbumComboBox.SelectedIndex].album_index;
                }
                if (AlbumAlreadyExists(NewAlbumParentAlbumComboBox.SelectedIndex))
                {
                    MessageBox.Show("Album already exists in Piwigo.  Please choose a different album name.");
                    return;
                }

                Form StatusForm = new StatusForm(constants.COMMAND_NEW_ALBUM, command_line_args);
                result = StatusForm.ShowDialog();
                StatusForm.Close();
                if (result == DialogResult.No)
                {
                    MessageBox.Show(GlobalClass.StatusDialogErrorMessage, "Picasa2Piwigo Error",
                        MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
                else
                {
                    MessageBox.Show("Add to new album complete.");
                    Application.Exit();
                }
            }

            if (AddTopAlbumCheckbox.Checked)
            {
                if (AddToAlbumComboBox.SelectedIndex == -1)
                {
                    MessageBox.Show("Error:  No Album Selected");
                    return;
                }
                GlobalClass.AddAlbumCategoryID = album_list_array[AddToAlbumComboBox.SelectedIndex].album_index;
                Form StatusForm = new StatusForm(constants.COMMAND_ADD_TO_ALBUM, command_line_args);
                result = StatusForm.ShowDialog();
                StatusForm.Close();
                if (result == DialogResult.No)
                {
                    MessageBox.Show(GlobalClass.StatusDialogErrorMessage, "Picasa2Piwigo Error",
                        MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
                else
                {
                    MessageBox.Show("Add to album complete.");
                    Application.Exit();
                }
            }

        }

        private void OptionsButton_Click(object sender, EventArgs e)
        {
            DialogResult option_form_result;

            Form OptionsForm = new OptionsForm();
            OptionsButton.Enabled = false;
            option_form_result = OptionsForm.ShowDialog();
            OptionsButton.Enabled = true;
            if (option_form_result == DialogResult.OK)
            {
                if (FormSettings.Default.PiwigoUrlSetting.Length != 0 &&
                    FormSettings.Default.PicasaContactsLocation.Length != 0)
                {
                    this.SyncButton.Enabled = true;
                    //ok to try to login etc
                    LoginBuildAlbumList();

                    //populate album listbox
                    PopulateAlbumListBox();
                }
            }
        }

        private void NewAlbumRadioButton_CheckedChanged(object sender, EventArgs e)
        {
            if (NewAlbumRadioButton.Checked)
            {
                NewAlbumGroupBox.Enabled = true;                
                AddToAlbumGroupbox.Enabled = false;
            }
        }
        private void AddTopAlbumCheckbox_CheckedChanged(object sender, EventArgs e)
        {
            if (AddTopAlbumCheckbox.Checked)
            {
                NewAlbumGroupBox.Enabled = false;                
                AddToAlbumGroupbox.Enabled = true;
            }
        }
        public void LoginBuildAlbumList()
        {
            DialogResult result;
            Form StatusForm = new StatusForm(constants.COMMAND_START_UP, command_line_args);
            result = StatusForm.ShowDialog();
            StatusForm.Close();
            if (result == DialogResult.No)
            {
                MessageBox.Show(GlobalClass.StatusDialogErrorMessage, "Picasa2Piwigo Error",
                    MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            AlbumList = GlobalClass.AlbumList;

            //build album list
            BuildAlbumList(AlbumList);
        }
        public string DetermineAlbumNameFromCommandLine(string command_line)
        {
            int k, l, m;
            string album_name;
 
            k = command_line.LastIndexOf("\\");
            album_name = "";
            if (k != -1)
            {
                l = command_line.LastIndexOf("\\", k - 1);
                m = command_line.LastIndexOf(":", k - 1);
                if (l != -1)
                {
                    album_name = command_line.Substring(l + 1, k - l - 1);
                }
                else if (m != -1)
                {
                    album_name = command_line.Substring(m + 1, k - m - 1);
                }
            }
            return album_name;
        }
        public void BuildAlbumList(XmlDocument AlbumList)
        {            
            album_count = 0;
            XmlNodeList nodelist = AlbumList.GetElementsByTagName("category");
            foreach (XmlNode anode in nodelist)
            {
                if (album_count >= album_list_array.Length)
                {
                    Array.Resize(ref album_list_array, album_list_array.Length + 1024);
                }
                if (anode.Attributes.Item(0).Name == "id")
                {
                    album_list_array[album_count].album_index = Convert.ToInt32(anode.Attributes.Item(0).Value);
                }
                album_list_array[album_count].album_name = anode.ChildNodes[0].InnerText;
                album_count++;
            }
        }
        public void PopulateAlbumListBox()
        {
            int i;

            for (i = 0; i < album_count; i++)
            {
                NewAlbumParentAlbumComboBox.Items.Add(album_list_array[i].album_name);                
                AddToAlbumComboBox.Items.Add(album_list_array[i].album_name);
            }
        }
        public bool AlbumAlreadyExists(int selected_index)
        {
            int i;
            string NewAlbumNameFull;

            if (selected_index == -1)
            {
                NewAlbumNameFull = GlobalClass.NewAlbumName;
            }
            else
            {
                NewAlbumNameFull = album_list_array[selected_index].album_name + " / " + GlobalClass.NewAlbumName;
            }
            for (i = 0; i < album_count; i++)
            {
                if (album_list_array[i].album_name == NewAlbumNameFull)
                {
                    return true;
                }
            }
            return false;
        }

        private void AccessComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            Form1Settings.Default.AccessSetting = AccessComboBox.SelectedIndex;
            Form1Settings.Default.AccessValue = AccessComboBox.Text;
            Form1Settings.Default.Save();
        }

    }
}