/******************************************************************************
// MARECHAI: Master repository of computing history artifacts information
// ----------------------------------------------------------------------------
//
// Author(s)      : Natalia Portillo <claunia@claunia.com>
//
// --[ License ] --------------------------------------------------------------
//
//     This program is free software: you can redistribute it and/or modify
//     it under the terms of the GNU General Public License as
//     published by the Free Software Foundation, either version 3 of the
//     License, or (at your option) any later version.
//
//     This program is distributed in the hope that it will be useful,
//     but WITHOUT ANY WARRANTY; without even the implied warranty of
//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//     GNU General Public License for more details.
//
//     You should have received a copy of the GNU General Public License
//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2003-2026 Natalia Portillo
*******************************************************************************/

using System.Collections.Generic;
using System.Threading.Tasks;
using Marechai.Data.Dtos;
using Microsoft.AspNetCore.Components;

namespace Marechai.Pages.Companies;

public partial class Index
{
    char?                  _character;
    List<CompanyDto> _companies;
    int?                   _countryId;
    string                 _countryName;
    bool                   _loaded;
    string                 _startingCharacter;

    [Parameter]
    public int? CountryId
    {
        get => _countryId;
        set
        {
            if(_countryId == value) return;

            _countryId = value;
            _loaded    = false;
        }
    }

    [Parameter]
    public string StartingCharacter
    {
        get => _startingCharacter;
        set
        {
            if(_startingCharacter == value) return;

            _startingCharacter = value;
            _loaded            = false;
        }
    }

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if(_loaded) return;

        _character = null;

        if(!string.IsNullOrWhiteSpace(StartingCharacter) && StartingCharacter.Length == 1)
        {
            _character = StartingCharacter[0];

            // ToUpper()
            if(_character >= 'a' && _character <= 'z') _character -= (char)32;

            // Check if not letter or number
            if(_character < '0' || _character > '9' && _character < 'A' || _character > 'Z') _character = null;
        }

        if(_character.HasValue) _companies = await Service.GetCompaniesByLetterAsync(_character.Value);

        if(CountryId.HasValue && _companies is null)
        {
            _countryName = await Service.GetCountryNameAsync(CountryId.Value);

            if(_countryName != null)
                _companies = await Service.GetCompaniesByCountryAsync(CountryId.Value);
            else
                CountryId = null;
        }

        _companies ??= await Service.GetAsync();
        _loaded    =   true;
        StateHasChanged();
    }
}