using Comal.Classes;
using InABox.Core;
using InABox.Database;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace PRS.Shared.Database_Update_Scripts;

internal class Update_8_49 : DatabaseUpdateScript
{
    public override VersionNumber Version => new(8, 49);

    

    public override bool Update()
    {
        MigrateBillApprovals();

        return true;
    }

    private void MigrateBillApprovals()
    {
        var _provider = DbFactory.NewProvider(Logger.Main);

        Logger.Send(LogType.Information, "", $"Migrating Bill Approvals...");
        var _approvals = _provider.Query(
                new Filter<BillApproval>().All(),
                Columns.Local<BillApproval>().Add("Approved")
            ).ToArray<BillApproval>()
            .ToArray();
        Utils.Utils.ProcessInChunks(
            _approvals, 
            chunk =>
            {
                foreach(var _approval in chunk)
                {
                    var _date = (DateTime)(CoreUtils.GetPropertyValue(_approval,"Approved") ?? DateTime.MinValue);
                    _approval.Status = _date.IsEmpty() ? BillApprovalStatus.NotYetApproved : BillApprovalStatus.Approved;
                }
                _provider.Save(chunk.Where(x => x.IsChanged()));
            }, 
            100, 
            percent => Logger.Send(LogType.Information, "", $"Migrating Bill Approvals: {percent:F2}%")
            
        );
        
        Logger.Send(LogType.Information, "", $"Updating Bill Statuses...");
        var _bills = _provider.Query<Bill>(
            new Filter<Bill>().All(),
            Columns.Required<Bill>().Add(x=>x.ApprovalStatus)
        ).ToArray<Bill>();
        
        Utils.Utils.ProcessInChunks(
            _bills,
            chunk =>
            {
                foreach (var _bill in chunk)
                {
                    var _statuses = _approvals
                        .Where(x => x.Bill.ID == _bill.ID)
                        .Select(x => x.Status)
                        .Distinct()
                        .ToArray();
                    _bill.ApprovalStatus = Bill.CalculateApprovalStatus(_statuses);
                }
                _provider.Save(chunk.Where(x => x.IsChanged()));
            },
            100,
            percent => Logger.Send(LogType.Information, "", $"Migrating Bill Statuses: {percent:F2}%")

        );
        Logger.Send(LogType.Information, "", $"Migrating Bill Statuses complete");
        
    }
}