marechai/Marechai/Pages/Companies/Index.razor

@{
/******************************************************************************
// MARECHAI: Master repository of computing history artifacts information
// ----------------------------------------------------------------------------
//
// Filename       : Index.razor
// Author(s)      : Natalia Portillo <claunia@claunia.com>
//
// --[ Description ] ----------------------------------------------------------
//
//     Lists all companies or companies by country
//
// --[ 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 © 2003-2020 Natalia Portillo
*******************************************************************************/
}

@page "/companies"
@page "/companies/country/{CountryId:int}"
@page "/companies/{StartingCharacter}"
@inherits OwningComponentBase<CompaniesService>
@inject IStringLocalizer<CompaniesService> L
@inject IWebHostEnvironment Host

@if (_companies is null)
{
    <p align="center">@L["Loading..."]</p>

    return;
}

<p align="center">
    @if (CountryId.HasValue)
    {
        <b>@string.Format(L["Companies founded in {0}."], L[_countryName])</b>
        if (File.Exists(System.IO.Path.Combine(Host.WebRootPath, "assets/flags/countries", CountryId + ".svg")))
        {
            <picture>
                <source type="image/svg+xml" srcset="/assets/flags/countries/@(CountryId).svg">
                <source type="image/webp" srcset="/assets/flags/countries/webp/1x/@(CountryId).webp,
            /assets/flags/countries/webp/1x/@(CountryId).webp 2x,
            /assets/flags/countries/webp/1x/@(CountryId).webp 3x">
                <img srcset="/assets/flags/countries/png/1x/@(CountryId).png,
                                     /assets/flags/countries/png/1x/@(CountryId).png 2x,
                                     /assets/flags/countries/png/1x/@(CountryId).webp 3x" src="/assets/flags/countries/png/1x@(CountryId).png" alt="" height="32" />
            </picture>
        }
        <br />
    }

    @if (_character.HasValue)
    {
        <b>@string.Format(L["Companies which name starts with {0}."], _character)</b>
        <br />
    }

    @if (_companies.Any())
    {
        <p>
            @string.Format(L["{0} companies found in the database."], _companies.Count())
            <br />
            @foreach (var company in _companies)
            {
                <a href="/companies/@company.Id">
                    @if (company.LastLogo != null &&
                         File.Exists(Path.Combine(Host.WebRootPath, "assets/logos", company.LastLogo + ".svg")))
                    {
                        <picture>
                            <source type="image/svg+xml" srcset="/assets/logos/@(company.LastLogo).svg">
                            <source type="image/webp" srcset="/assets/logos/thumbs/webp/1x/@(company.LastLogo).webp,
/assets/logos/thumbs/webp/2x/@(company.LastLogo).webp 2x,
/assets/logos/thumbs/webp/3x/@(company.LastLogo).webp 3x">
                            <img srcset="/assets/logos/thumbs/png/1x/@(company.LastLogo).png,
                         /assets/logos/thumbs/png/2x/@(company.LastLogo).png 2x,
                         /assets/logos/thumbs/png/3x/@(company.LastLogo).png 3x" src="/assets/logos/thumbs/png/1x@(company.LastLogo).png" alt="" height="auto" width="auto" style="max-height: 32px; max-width: 128px" />
                        </picture>
                    }
                    @company.Name
                </a>
                <br />
            }
        </p>
    }
    else
    {
        <p>@L["There are no companies in the database."]</p>
    }
</p>

@code
{
    [Parameter]
    public int? CountryId { get; set; }

    [Parameter]
    public string StartingCharacter { get; set; }

    List<CompanyViewModel> _companies;
    string _countryName;
    char? _character;

    protected override async Task OnInitializedAsync()
    {
        _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.GetCompaniesAsync();
    }
}