@namespace Oqtane.Modules.Admin.Languages
@inherits ModuleBase
@using System.Globalization
@using Microsoft.AspNetCore.Localization
@inject NavigationManager NavigationManager
@inject ILocalizationService LocalizationService
@inject ILanguageService LanguageService
@inject IPackageService PackageService
@inject IStringLocalizer<Add> Localizer

@if (_supportedCultures == null)
{
    <p><em>@Localizer["Loading"]</em></p>
}
else
{
    <TabStrip>
        <TabPanel Name="Manage" ResourceKey="Manage">
            @if (_availableCultures.Count() == 0)
            {
                <ModuleMessage Type="MessageType.Info" Message="@_message"></ModuleMessage>
            }
            else
            {
            <table class="table table-borderless">
                <tr>
                    <td>
                        <Label For="name" HelpText="Name Of The Language" ResourceKey="Name">Name:</Label>
                    </td>
                    <td>
                        <select id="_code" class="form-control" @bind="@_code">
                            @foreach (var culture in _availableCultures)
                            {
                                <option value="@culture.Name">@culture.DisplayName</option>
                            }
                        </select>
                    </td>
                </tr>
                <tr>
                    <td>
                        <Label For="default" HelpText="Indicates Whether Or Not This Language Is The Default For The Site" ResourceKey="IsDefault">Default?</Label>
                    </td>
                    <td>
                        <select id="default" class="form-control" @bind="@_isDefault">
                            <option value="True">@Localizer["Yes"]</option>
                            <option value="False">@Localizer["No"]</option>
                        </select>
                    </td>
                </tr>
            </table>
            <button type="button" class="btn btn-success" @onclick="SaveLanguage">@Localizer["Save"]</button>
            }
            <NavLink class="btn btn-secondary" href="@NavigateUrl()">@Localizer["Cancel"]</NavLink>
        </TabPanel>
        <TabPanel Name="Download" ResourceKey="Download" Security="SecurityAccessLevel.Host">
            @if (_packages != null && _packages.Count > 0)
            {
                <ModuleMessage Type="MessageType.Info" Message="Download one or more language packages from the list below. Once you are ready click Install to complete the installation."></ModuleMessage>
                <Pager Items="@_packages">
                    <Header>
                        <th>@Localizer["Name"]</th>
                        <th>@Localizer["Version"]</th>
                        <th style="width: 1px"></th>
                    </Header>
                    <Row>
                        <td>@context.Name</td>
                        <td>@context.Version</td>
                        <td>
                            <button type="button" class="btn btn-primary" @onclick=@(async () => await DownloadLanguage(context.PackageId, context.Version))>@Localizer["Download"]</button>
                        </td>
                    </Row>
                </Pager>
                <button type="button" class="btn btn-success" @onclick="InstallLanguages">@Localizer["Install"]</button>
                <NavLink class="btn btn-secondary" href="@NavigateUrl()">@Localizer["Cancel"]</NavLink>
            }
            else
            {
                <ModuleMessage Type="MessageType.Info" Message="No Language Packages Are Available To Download"></ModuleMessage>
            }
        </TabPanel>
        <TabPanel Name="Upload" ResourceKey="Upload" Security="SecurityAccessLevel.Host">
            <table class="table table-borderless">
                <tr>
                    <td>
                        <Label HelpText="Upload one or more language packages. Once they are uploaded click Install to complete the installation." ResourceKey="Module">Language: </Label>
                    </td>
                    <td>
                        <FileManager Filter="nupkg" ShowFiles="false" Folder="Packages" UploadMultiple="true" />
                    </td>
                </tr>
            </table>
            <button type="button" class="btn btn-success" @onclick="InstallLanguages">@Localizer["Install"]</button>
            <NavLink class="btn btn-secondary" href="@NavigateUrl()">@Localizer["Cancel"]</NavLink>
        </TabPanel>
    </TabStrip>
}

@code {
    private string _code = string.Empty;
    private string _isDefault = "False";
    private string _message;
    private IEnumerable<Culture> _supportedCultures;
    private IEnumerable<Culture> _availableCultures;
    private List<Package> _packages;

    public override SecurityAccessLevel SecurityAccessLevel => SecurityAccessLevel.Admin;

    protected override async Task OnParametersSetAsync()
    {
        var languages = await LanguageService.GetLanguagesAsync(PageState.Site.SiteId);
        var languagesCodes = languages.Select(l => l.Code).ToList();

        _supportedCultures = await LocalizationService.GetCulturesAsync();
        _availableCultures = _supportedCultures
            .Where(c => !c.Name.Equals(Constants.DefaultCulture) && !languagesCodes.Contains(c.Name));
        _packages = await PackageService.GetPackagesAsync("language");

        if (_supportedCultures.Count() == 1)
        {
            _message = Localizer["OnlyEnglish"];
        }
        else if (_availableCultures.Count() == 0)
        {
            _message = Localizer["AllLanguages"];
        }
    }

    private async Task SaveLanguage()
    {
        var language = new Language
        {
            SiteId = PageState.Page.SiteId,
            Name = CultureInfo.GetCultureInfo(_code).DisplayName,
            Code = _code,
            IsDefault = (_isDefault == null ? false : Boolean.Parse(_isDefault))
        };

        try
        {
            language = await LanguageService.AddLanguageAsync(language);

            if (language.IsDefault)
            {
                await SetCultureAsync(language.Code);
            }

            await logger.LogInformation("Language Added {Language}", language);

            NavigationManager.NavigateTo(NavigateUrl());
        }
        catch (Exception ex)
        {
            await logger.LogError(ex, "Error Adding Language {Language} {Error}", language, ex.Message);
            AddModuleMessage(Localizer["Error.Language.Add"], MessageType.Error);
        }
    }

    private async Task InstallLanguages()
    {
        try
        {
            await PackageService.InstallPackagesAsync();
            AddModuleMessage(string.Format(Localizer["Success.Language.Install"], NavigateUrl("admin/system")), MessageType.Success);
        }
        catch (Exception ex)
        {
            await logger.LogError(ex, "Error Installing Language Package");
        }
    }

    private async Task DownloadLanguage(string packageid, string version)
    {
        try
        {
            await PackageService.DownloadPackageAsync(packageid, version, "Packages");
            await logger.LogInformation("Language Paclage {Name} {Version} Downloaded Successfully", packageid, version);
            AddModuleMessage(Localizer["Success.Language.Download"], MessageType.Success);
            StateHasChanged();
        }
        catch (Exception ex)
        {
            await logger.LogError(ex, "Error Downloading Language Package {Name} {Version}", packageid, version);
            AddModuleMessage(Localizer["Error.Langauge.Download"], MessageType.Error);
        }
    }

    private async Task SetCultureAsync(string culture)
    {
        if (culture != CultureInfo.CurrentUICulture.Name)
        {
            var interop = new Interop(JSRuntime);
            var localizationCookieValue = CookieRequestCultureProvider.MakeCookieValue(new RequestCulture(culture));
            await interop.SetCookie(CookieRequestCultureProvider.DefaultCookieName, localizationCookieValue, 360);

            NavigationManager.NavigateTo(NavigationManager.Uri, forceLoad: true);
        }
    }
}