@using System.Numerics
@using BTCPayServer.Lightning
@using BTCPayServer.Models.StoreViewModels
@using BTCPayServer.Plugins.BreezSpark
@using BTCPayServer.Security
@inject BreezSparkService BreezService

@{
    ViewData.SetActivePage("Breez", "Send", "Send");
    var storeId = Model switch
    {
        string s => s,
        StoreDashboardViewModel dashboardModel => dashboardModel.StoreId,
        _ => Context.GetImplicitStoreId()
        };
    var sdk = BreezService.GetClient(storeId)?.Sdk;
    if (sdk is null)
        return;

    var nodeInfo = new Breez.Sdk.Spark.GetInfoRequest(ensureSynced: false);
    Breez.Sdk.Spark.GetInfoResponse? infoResponse = null;
    try
    {
        infoResponse = await sdk.GetInfo(nodeInfo);
    }
    catch (Exception ex)
    {
        <div class="alert alert-danger" role="alert">
            <h5 class="alert-heading">Error</h5>
            <p class="mb-0">Unable to fetch node information: @ex.Message</p>
        </div>
        return;
    }

    var max = LightMoney.Satoshis((long)(infoResponse?.balanceSats ?? 0)).ToUnit(LightMoneyUnit.Satoshi);

}


@if (ViewData["PaymentDetails"] is PaymentDetailsViewModel paymentDetails)
{
    <div class="payment-details mb-4">
        <h4>Payment Details</h4>
        <div class="row">
            <div class="col-md-6">
                <p><strong>Destination:</strong> @paymentDetails.Destination</p>
                <p><strong>Amount:</strong> @paymentDetails.Amount sats</p>
            </div>
            <div class="col-md-6">
                <p><strong>Fee:</strong> @paymentDetails.Fee sats</p>
                <p><strong>Total:</strong> @(paymentDetails.Amount + paymentDetails.Fee) sats</p>
            </div>
        </div>
        <form method="post" asp-action="ConfirmSend" asp-route-storeId="@storeId">
            <input type="hidden" name="paymentRequest" value="@paymentDetails.Destination" />
            <input type="hidden" name="amount" value="@paymentDetails.Amount" />
            <input type="hidden" name="prepareResponse" value="@paymentDetails.PrepareResponseJson" />
            <button type="submit" class="btn btn-success">Confirm and Send</button>
            <a href="javascript:history.back()" class="btn btn-secondary">Cancel</a>
        </form>
    </div>
}
else
{
    <form method="post" asp-action="PrepareSend" asp-route-storeId="@storeId">
        <div class="row mb-4">
            <div class="col-12">
                <div class="d-flex align-items-center justify-content-between mb-3">
                    <h3 class="mb-0">
                        <span>@ViewData["Title"]</span>
                    </h3>
                    <div class="d-flex gap-3 mt-3 mt-sm-0">
                        <button type="submit" class="btn btn-primary">Prepare Payment</button>
                    </div>
                </div>
                <div asp-validation-summary="ModelOnly" class="text-danger"></div>
                <div class="form-group">
                    <label for="address" class="form-label" data-required>Bolt11 or Bitcoin Address</label>
                    <input type="text" id="address" name="address" class="form-control" required placeholder="lnbc... or bc1..."/>
                    <small class="form-text text-muted">Enter a Lightning bolt11 invoice or a Bitcoin address</small>
                </div>
                <div class="form-group">
                    <label for="amount" class="form-label">Amount (sats)</label>
                    <input type="number" id="amount" name="amount" min="1" max="@max" class="form-control" placeholder="Amount in satoshis"/>
                    <small class="form-text text-muted">Maximum payable: @max sats</small>
                </div>
            </div>
        </div>
    </form>
}

@functions {
    public class PaymentDetailsViewModel
    {
        public string Destination { get; set; }
        public long Amount { get; set; }
        public long Fee { get; set; }
        public string PrepareResponseJson { get; set; }
    }
}