btcpayserver/BTCPayServer/Views/UIServer/Theme.cshtml

@using BTCPayServer.Abstractions.Contracts
@model BTCPayServer.Services.ThemeSettings
@inject IFileService FileService
@{
    ViewData.SetActivePage(ServerNavPages.Theme, "Theme");
    var canUpload = await FileService.IsAvailable();
}

@section PageFootContent {
    <partial name="_ValidationScriptsPartial" />
}

<h3 class="mb-4">@ViewData["Title"]</h3>

<div class="row">
    <div class="col-xl-8 col-xxl-constrain">
        <form method="post" enctype="multipart/form-data">
            <p>Use the default Light or Dark Themes, or provide a CSS theme file below.</p>
            
            <div class="form-group d-flex align-items-center">
                <input asp-for="CustomTheme" type="checkbox" class="btcpay-toggle me-3" data-bs-toggle="collapse" data-bs-target="#CustomThemeSettings" aria-expanded="@Model.CustomTheme" aria-controls="CustomThemeSettings" />
                <label asp-for="CustomTheme" class="form-label mb-0"></label>
            </div>
            <div class="collapse @(Model.CustomTheme ? "show" : "")" id="CustomThemeSettings">
                <div class="form-group">
                    <label asp-for="CustomThemeCssUri" class="form-label"></label>
                    <a href="https://docs.btcpayserver.org/Development/Theme/#1-custom-themes" target="_blank" rel="noreferrer noopener">
                        <span class="fa fa-question-circle-o text-secondary" title="More information..."></span>
                    </a>
                    <input asp-for="CustomThemeCssUri" class="form-control" />
                    <span asp-validation-for="CustomThemeCssUri" class="text-danger"></span>
                    <span asp-validation-for="CustomTheme" class="text-danger"></span>
                </div>
            </div>
            
            <h3 class="mt-5 mb-3">Branding</h3>
            <div class="form-group">
                <label asp-for="LogoFile" class="form-label"></label>
                @if (canUpload)
                {
                    <div class="d-flex flex-wrap gap-3 align-items-center">
                        <input asp-for="LogoFile" type="file" class="form-control flex-grow">
                        @if (!string.IsNullOrEmpty(Model.LogoFileId))
                        {
                            <img src="@(await FileService.GetFileUrl(Context.Request.GetAbsoluteRootUri(), Model.LogoFileId))" alt="Logo" style="height:2.1rem;max-width:10.5rem;"/>
                            <button type="submit" class="btn btn-sm btn-outline-danger" name="RemoveLogoFile" value="true">Remove</button>
                        }
                    </div>
                    <span asp-validation-for="LogoFile" class="text-danger"></span>
                }
                else
                {
                    <input asp-for="LogoFile" type="file" class="form-control" disabled>
                    <p class="form-text text-muted">In order to upload a logo, a <a asp-controller="UIServer" asp-action="Files">file storage</a> must be configured.</p>
                }
            </div>
            
            <button type="submit" class="btn btn-primary mt-2" name="command" value="Save">Save</button>
        </form>
    </div>
</div>