using Mysql_example.Database;
using Mysql_example.Database.Schema;
using Mysql_example.Util;
using static Mysql_example.Database.DBConnectSpecific;

namespace Mysql_example
{
    public partial class MainForm : Form
    {
        Dictionary<UInt64, User> users;
        Dictionary<UInt64, Address> addresses;
        private DataGridViewCellEventArgs mouseLocation;
        public MainForm()
        {
            InitializeComponent();
        }
        private void MainPage_Load(object sender, EventArgs e)
        {
            LoadData();
            SetupUsersDataGridView();
            SetupAddressesDataGriView();
        }

        private void LoadData()
        {
            DBConnectSpecific connection = new DBConnectSpecific();
            usersAndAddressesStruct result = connection.ReadUsersAndAddresses();
            users = result.users;
            addresses = result.addresses;
        }
        private void SetupUsersDataGridView()
        {
            DataGridViewColumn oldColumn = DataGridViewUserInfo.Columns["edit"];
            if(oldColumn != null ) DataGridViewUserInfo.Columns.Remove(oldColumn);

            DataGridViewUserInfo.DataSource = Utility.usersToBindingList(users);
            DataGridViewUserInfo.ReadOnly= true;

            //Add Edit buttons
            DataGridViewButtonColumn editColumn = new DataGridViewButtonColumn();
            editColumn.Name = "edit";
            editColumn.Text = "Edit";
            editColumn.UseColumnTextForButtonValue= true;
            editColumn.SortMode = DataGridViewColumnSortMode.NotSortable;
            DataGridViewUserInfo.Columns.Add(editColumn);
            editColumn.Width = 64;
            editColumn.MinimumWidth = 64;
        }
        private void SetupAddressesDataGriView()
        {
            DataGridViewAdressInfo.DataSource = Utility.addressesToBindingList(addresses);
            DataGridViewAdressInfo.Columns[nameof(Address.PostalCode)].Visible = false;
            DataGridViewAdressInfo.Columns[nameof(Address.Region)].Visible = false;
            DataGridViewAdressInfo.ReadOnly= true;
        }
        private void RefreshDataGridViews()
        {
            LoadData();

            int scrollRowIndexUsers = DataGridViewUserInfo.FirstDisplayedScrollingRowIndex != -1 ? DataGridViewUserInfo.FirstDisplayedScrollingRowIndex : 0;
            int scrollRowIndexAddresses = DataGridViewAdressInfo.FirstDisplayedScrollingRowIndex != -1 ? DataGridViewAdressInfo.FirstDisplayedScrollingRowIndex : 0;
            SetupUsersDataGridView();
            SetupAddressesDataGriView();
            DataGridViewUserInfo.FirstDisplayedScrollingRowIndex = scrollRowIndexUsers;
            DataGridViewAdressInfo.FirstDisplayedScrollingRowIndex = scrollRowIndexAddresses;
        }
        private void EditUser(User user)
        {
            UserEditForm editForm = new UserEditForm(ref user);
            editForm.SaveUserCallback += new UserEditForm.SaveUserDelegate(this.OnUserSaveCallback);
            editForm.Show();
        }
        
        private void OnUserSaveCallback(ref User user)
        {
            DBConnectSpecific connection = new DBConnectSpecific();
            connection.UpdateUser(ref user, users);
            connection.UpdateAddressesOnUser(ref user, users);
            RefreshDataGridViews();
        }
        private void DataGridViewUserInfo_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            if (DataGridViewUserInfo.Columns["edit"].Index != e.ColumnIndex || e.RowIndex < 0) return;
            EditUser(DataGridViewUserInfo.Rows[e.RowIndex].DataBoundItem as User);
        }
        private void AddUserToolStripMenuItem_Click(object sender, EventArgs e)
        {
            User newUser = new User();
            newUser.Addresses = new Dictionary<ulong, Address>();
            newUser.Birthday = DateTime.Now;
            UserEditForm editForm = new UserEditForm(ref newUser);
            editForm.SaveUserCallback += new UserEditForm.SaveUserDelegate(this.OnUserSaveCallback);
            editForm.Show();
            editForm.TextBoxEmail_Validating(null, null);
        }
        private void DeleteUserToolStripMenuItem_Click(object sender, EventArgs e)
        {
            DialogResult dialogResult = MessageBox.Show("This isn't Revertable", "Delete User?", MessageBoxButtons.YesNo);
            if (dialogResult != DialogResult.Yes) return;

            DataGridViewRow row = DataGridViewUserInfo.Rows[mouseLocation.RowIndex];
            User user = row.DataBoundItem as User;
            DBConnectSpecific connection = new DBConnectSpecific();
            connection.DeleteUser(user);
            RefreshDataGridViews();
        }
        private void DataGridViewUserInfo_CellMouseEnter(object sender, DataGridViewCellEventArgs e)
        {
            mouseLocation = e;
        }
    }
}