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

namespace AyaNovaQBI
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();
            //InitDataSet();
            Icon = AyaNovaQBI.Properties.Resources.logo;
        }

        private async void MainForm_Load(object sender, EventArgs e)
        {

            //Initialize
            StringBuilder initErrors = new StringBuilder();
            if (await util.InitializeQBI(initErrors) == false)
            {
                if (initErrors.Length > 0)
                {
                    if (util.LOG_AVAILABLE) await util.IntegrationLog(initErrors.ToString());
                    await Task.Run(() => MessageBox.Show($"AyaNova QBI was unable to start:\r\n{initErrors.ToString()}"));
                }
                Close();
                return;
            }

            //Confirm main settings and set any that are missing:
            if (await util.ValidateSettings(false) == util.pfstat.Cancel)
            {
                await util.IntegrationLog("PFC: User settings not completed, user selected cancel");
                Close();
                return;
            }

            Text = "AyaNova QBI - " + util.QCompanyName;
            //See if there are *any* data mappings, if not then we will prompt the user to start that process
            if (util.QBIntegration.Items.Count == 0)
            {
                //show message about mapping
                MessageBox.Show(
                    "AyaNova QBI now needs you to map data between QuickBooks and AyaNova.",
                    "Setup mapping", MessageBoxButtons.OK, MessageBoxIcon.Information);

                Map m = new Map();
                if (m.ShowDialog() == DialogResult.Abort)
                    Close();

            }
            //Display billable workorders
            await InitInvoices();
                      
            menuStrip1.Enabled = true;
        }

        private void grid_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
        {
            if (e.ColumnIndex == grid.Columns["Status"].Index
            && e.Value != null)
            {
                var isLinked = (bool)grid.Rows[e.RowIndex].Cells["linked"].Value;

                if (!isLinked)
                {
                    grid.Rows[e.RowIndex].ErrorText = "Not invoiceable: use \"Work orders\" -> \"Fix problems\" to resolve";
                }
                else
                {
                    grid.Rows[e.RowIndex].ErrorText = null;
                }

            }

        }

        private void exitToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Close();
        }





        private async void refreshInvoicesToolStripMenuItem_Click(object sender, EventArgs e)
        {
            await InitInvoices();
        }

        private async void preferencesToolStripMenuItem_Click(object sender, EventArgs e)
        {
            await util.ValidateSettings(true);
        }

        private async void mapAndImportToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Map m = new Map();
            if (m.ShowDialog() == DialogResult.Abort)
                Close();
            else
            {
                m.Dispose();
                await InitInvoices();
            }
        }

        private void aboutToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Assembly a = Assembly.GetExecutingAssembly();
            string sVersion = "AyaNova QBI version " + util.DisplayVersion(a.GetName().Version) + "\r\n";
            System.Diagnostics.FileVersionInfo fileVersion = System.Diagnostics.FileVersionInfo.GetVersionInfo(a.Location);
            if (fileVersion.FileBuildPart > 0)
                sVersion += " (Patch " + fileVersion.FileBuildPart.ToString() + ")\r\n";
            sVersion += "Copyright 2000-2022 Ground Zero Tech-Works Inc.\r\n";
            MessageBox.Show(sVersion, "About");
        }


        private void onlineManualToolStripMenuItem_Click(object sender, EventArgs e)
        {
            util.OpenWebURL("https://ayanova.com/qbi/docs");
        }

        private async void refreshCachedDataToolStripMenuItem_Click(object sender, EventArgs e)
        {
            await util.PopulateQBListCache();
            await util.PopulateAyaListCache();
        }

        private async void invoiceDescriptiveTextTemplateToolStripMenuItem_Click(object sender, EventArgs e)
        {
            InvoiceTemplateBuilder b = new InvoiceTemplateBuilder();
            b.ShowDialog();
            if (util.QDat.IsDirty)
                await util.SaveIntegrationObject();

            b.Dispose();
        }



        #region WORKORDERS / INVOICING

        private async void multipleWorkordersPerInvoiceToolStripMenuItem_Click(object sender, EventArgs e) => await InvoiceSelected(false);

        private async void oneWorkOrderPerInvoiceToolStripMenuItem_Click(object sender, EventArgs e) => await InvoiceSelected(true);

        private async void fixProblemsToolStripMenuItem_Click(object sender, EventArgs e)
        {
            FixInvoiceProblems d = new FixInvoiceProblems();
            d.MisMatches = _MisMatches;
            d.PartPriceOverrides = _PartPriceOverrides;
            d.ShowDialog();
            if (d.ChangesMade)
                await InitInvoices();
            d.Dispose();
        }

        /// <summary>
        /// Adjusts main form display to either show a list of billable workorders
        /// or a status indicating there are none and why
        /// </summary>
        private async Task SetState()
        {
            fixProblemsToolStripMenuItem.Enabled = _MisMatches.Count > 0;

            if (grid.Rows.Count > 0)
            {

                grid.Visible = true;
                lblStatus.Visible = false;
            }
            else
            {
                StringBuilder sb = new StringBuilder();
                sb.Append("No invoiceable work orders found in AyaNova\r\n\r\n");
                sb.Append("A work order is invoiceable and will be listed here if it has:\r\n");

                sb.Append("   - \"Invoice number\" field empty\r\n");
                if (util.QDat.PreWOStatus != 0)
                {
                    sb.Append("   - \"Work order status\" field set to: ");
                    var r = await util.GetAsync($"work-order-status/{util.QDat.PreWOStatus}");
                    var status = r.ObjectResponse["data"].ToObject<WorkOrderStatus>();
                    if (status != null)
                        sb.Append(status.Name);
                    else
                        sb.Append("UNKNOWN / MISSING STATUS - recently deleted?");

                    sb.Append("\r\n");
                    sb.Append("   (You can change this status under Tools->Preferences in the menu)");
                }
                else
                    sb.Append("   - any \"Locked\" type of Work order status set\r\n");

                lblStatus.Text = sb.ToString();

                grid.Visible = false;
                lblStatus.Visible = true;
            }
        }

        private DataTable _GridTable = null;
        private List<util.MisMatch> _MisMatches = new List<util.MisMatch>();
        private List<long> _PartPriceOverrides = new List<long>();
        private List<WorkOrderAccountingListItem> _GridTableSourceList = new List<WorkOrderAccountingListItem>();
        /// <summary>
        /// Initialize invoices dataset 
        /// from scratch.  If a previous
        /// initialize was done, wipe it and 
        /// repopulate from scratch
        /// </summary>
        private async Task InitInvoices()
        {
            Waiting w = new Waiting();
            w.Show();
            w.Ops = "Validating invoices...";
            try
            {
                if (_GridTable == null)
                {
                    //datatable is required to support sorting in dgv without writing a lot of extra code
                    _GridTable = new DataTable();
                    _GridTable.Columns.Add(new DataColumn("CustomerName"));
                    _GridTable.Columns.Add(new DataColumn("Serial", typeof(long)));
                    _GridTable.Columns.Add(new DataColumn("ServiceDate", typeof(DateTime)));
                    _GridTable.Columns.Add(new DataColumn("WorkorderStatusName"));
                    _GridTable.Columns.Add(new DataColumn("ProjectName"));
                    _GridTable.Columns.Add(new DataColumn("Color"));
                    _GridTable.Columns.Add(new DataColumn("CustomerId", typeof(long)));
                    _GridTable.Columns.Add(new DataColumn("Id", typeof(long)));
                    _GridTable.Columns.Add(new DataColumn("Linked", typeof(bool)));
                }
                else
                {
                    _GridTable.Clear();
                }
                _MisMatches.Clear();
                _GridTableSourceList.Clear();

                //[HttpGet("accounting-list-billable/{workOrderStatusId}")]
                var r = await util.GetAsync($"workorder/accounting-list-billable/{util.QDat.PreWOStatus}");
                _GridTableSourceList = r.ObjectResponse["data"].ToObject<List<WorkOrderAccountingListItem>>();

                foreach (WorkOrderAccountingListItem z in _GridTableSourceList)
                {
                    w.Step = "WO: " + z.Serial;
                    DataRow row = _GridTable.NewRow();
                    row["CustomerName"] = z.CustomerName;
                    row["Serial"] = z.Serial;
                    if (z.ServiceDate != null)
                        row["ServiceDate"] = ((DateTime)z.ServiceDate).ToLocalTime();
                    row["WorkorderStatusName"] = z.WorkorderStatusName;
                    row["ProjectName"] = z.ProjectName;
                    row["Color"] = z.Color;
                    row["CustomerId"] = z.CustomerId;
                    row["Id"] = z.Id;
                    row["Linked"] = await util.ScanLinksOK(z.Id, _MisMatches, _PartPriceOverrides);
                    _GridTable.Rows.Add(row);
                }


                //var bindingList = new BindingList(_GridTable);
                //var source = new BindingSource(bindingList, null);
                //grid.DataSource = source;
                grid.DataSource = _GridTable;
                grid.ClearSelection();
            }
            finally
            {
                w.Close();
            }
            await SetState();
        }




        /// <summary>
        /// Invoice selected items
        /// </summary>
        private async Task InvoiceSelected(bool bOneWoPerInvoice)
        {
            if (grid.SelectedRows.Count < 1)
            {
                MessageBox.Show("There are no Work order rows selected\r\nSelect one or more rows to invoice");
                return;
            }


            //build a list of selected work orders ordered by customer and that have linked=true to process here so that they are in customer order and only good ones that can be billed

            List<WorkOrderAccountingListItem> InvoiceableWorkOrdersList = new List<WorkOrderAccountingListItem>();
            foreach (DataGridViewRow r in grid.SelectedRows)
            {
                if ((bool)r.Cells["Linked"].Value == true)
                {
                    InvoiceableWorkOrdersList.Add(_GridTableSourceList.First(z => z.Id == (long)r.Cells["id"].Value));
                }
            }

            if (InvoiceableWorkOrdersList.Count < 1)
            {
                MessageBox.Show("There are no invoiceable Work order rows selected\r\nSelect one or more rows to invoice");
                return;
            }

            if (MessageBox.Show("Invoice the selected AyaNova Work orders into QuickBooks.\r\n\r\nAre you sure?", "Invoice AyaNova Work orders", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.No)            
                return;
            

            //We now have a list of work orders from grid selections ready to be invoiced and ordered by customer for grouping purposes 

            //An array list to hold the guid's of workorders being invoiced
            List<long> al = new List<long>();

            Cursor.Current = Cursors.WaitCursor;
            ArrayList alErrors = new ArrayList();
            Waiting w = new Waiting();
            w.Show();
            w.Ops = "Invoicing to QuickBooks...";


            if (bOneWoPerInvoice)
            {
                foreach (var invwo in InvoiceableWorkOrdersList)
                {
                    al.Add(invwo.Id);
                    w.Step = "Invoicing single workorder ";
                    await util.Invoice(al, alErrors);
                    al.Clear();
                }
            }
            else
            {

                //Invoice grouped by customer 
                var grouped = InvoiceableWorkOrdersList.GroupBy(z => z.CustomerId, z => z.Id, (Key, g) => new { CustomerId = Key, WorkOrders = g.ToList() });
                foreach (var CustomerWoGroup in grouped)
                {
                    foreach (var woid in CustomerWoGroup.WorkOrders)
                        al.Add(woid);
                    w.Step = $"Batch invoicing {CustomerWoGroup.WorkOrders.Count.ToString()}{((al.Count > 1) ? " Work Orders" : " Work Order")}";
                    await util.Invoice(al, alErrors);
                    al.Clear();
                }
            }
            w.Close();

            //display errors if any
            if (alErrors.Count != 0)
            {

                StringBuilder sb = new StringBuilder();
                sb.Append("Invoicing completed with some errors:\r\n\r\n");
                foreach (object o in alErrors)
                {
                    sb.Append((string)o);
                    sb.Append("\r\n************\r\n");
                }
                CopyableMessageBox cb = new CopyableMessageBox(sb.ToString());
                cb.ShowDialog();
            }
            //refresh display
            await InitInvoices();
        }
        #endregion workorders / invoicing





    }//eoc
}//eons