btcpayserver/BTCPayServer/Controllers/AppsController.PointOfSale.cs
2018-07-19 19:31:17 +09:00

284 lines
13 KiB
C#

using System;
using Microsoft.EntityFrameworkCore;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using BTCPayServer.Data;
using BTCPayServer.Models;
using BTCPayServer.Models.AppViewModels;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Mvc;
using NBitcoin.DataEncoders;
using NBitcoin;
using BTCPayServer.Services.Apps;
using Newtonsoft.Json;
using YamlDotNet.RepresentationModel;
using System.IO;
using BTCPayServer.Services.Rates;
using System.Globalization;
using System.Text;
using System.Text.Encodings.Web;
namespace BTCPayServer.Controllers
{
public partial class AppsController
{
public class PointOfSaleSettings
{
public PointOfSaleSettings()
{
Title = "My awesome Point of Sale";
Currency = "USD";
Template =
"tea:\n" +
" price: 0.02\n" +
" title: Green Tea # title is optional, defaults to the keys\n\n" +
"coffee:\n" +
" price: 1\n\n" +
"bamba:\n" +
" price: 3\n\n" +
"beer:\n" +
" price: 7\n\n" +
"hat:\n" +
" price: 15\n\n" +
"tshirt:\n" +
" price: 25";
ShowCustomAmount = true;
}
public string Title { get; set; }
public string Currency { get; set; }
public string Template { get; set; }
public bool ShowCustomAmount { get; set; }
}
[HttpGet]
[Route("{appId}/settings/pos")]
public async Task<IActionResult> UpdatePointOfSale(string appId)
{
var app = await GetOwnedApp(appId, AppType.PointOfSale);
if (app == null)
return NotFound();
var settings = app.GetSettings<PointOfSaleSettings>();
var vm = new UpdatePointOfSaleViewModel()
{
Title = settings.Title,
ShowCustomAmount = settings.ShowCustomAmount,
Currency = settings.Currency,
Template = settings.Template
};
if (HttpContext?.Request != null)
{
var appUrl = HttpContext.Request.GetAbsoluteRoot().WithTrailingSlash() + $"apps/{appId}/pos";
var encoder = HtmlEncoder.Default;
if (settings.ShowCustomAmount)
{
StringBuilder builder = new StringBuilder();
builder.AppendLine($"<form method=\"POST\" action=\"{encoder.Encode(appUrl)}\">");
builder.AppendLine($" <input type=\"hidden\" name=\"amount\" value=\"100\" />");
builder.AppendLine($" <input type=\"hidden\" name=\"email\" value=\"customer@example.com\" />");
builder.AppendLine($" <input type=\"hidden\" name=\"orderId\" value=\"CustomOrderId\" />");
builder.AppendLine($" <input type=\"hidden\" name=\"notificationUrl\" value=\"https://example.com/callbacks\" />");
builder.AppendLine($" <input type=\"hidden\" name=\"redirectUrl\" value=\"https://example.com/thanksyou\" />");
builder.AppendLine($" <button type=\"submit\">Buy now</button>");
builder.AppendLine($"</form>");
vm.Example1 = builder.ToString();
}
try
{
var items = Parse(settings.Template, settings.Currency);
var builder = new StringBuilder();
builder.AppendLine($"<form method=\"POST\" action=\"{encoder.Encode(appUrl)}\">");
builder.AppendLine($" <input type=\"hidden\" name=\"email\" value=\"customer@example.com\" />");
builder.AppendLine($" <input type=\"hidden\" name=\"orderId\" value=\"CustomOrderId\" />");
builder.AppendLine($" <input type=\"hidden\" name=\"notificationUrl\" value=\"https://example.com/callbacks\" />");
builder.AppendLine($" <input type=\"hidden\" name=\"redirectUrl\" value=\"https://example.com/thanksyou\" />");
builder.AppendLine($" <button type=\"submit\" name=\"choiceKey\" value=\"{items[0].Id}\">Buy now</button>");
builder.AppendLine($"</form>");
vm.Example2 = builder.ToString();
}
catch { }
vm.InvoiceUrl = appUrl + "invoices/SkdsDghkdP3D3qkj7bLq3";
}
vm.ExampleCallback = "{\n \"id\":\"SkdsDghkdP3D3qkj7bLq3\",\n \"url\":\"https://btcpay.example.com/invoice?id=SkdsDghkdP3D3qkj7bLq3\",\n \"status\":\"paid\",\n \"price\":10,\n \"currency\":\"EUR\",\n \"invoiceTime\":1520373130312,\n \"expirationTime\":1520374030312,\n \"currentTime\":1520373179327,\n \"exceptionStatus\":false,\n \"buyerFields\":{\n \"buyerEmail\":\"customer@example.com\",\n \"buyerNotify\":false\n },\n \"paymentSubtotals\": {\n \"BTC\":114700\n },\n \"paymentTotals\": {\n \"BTC\":118400\n },\n \"transactionCurrency\": \"BTC\",\n \"amountPaid\": \"1025900\",\n \"exchangeRates\": {\n \"BTC\": {\n \"EUR\": 8721.690715789999,\n \"USD\": 10817.99\n }\n }\n}";
return View(vm);
}
[HttpPost]
[Route("{appId}/settings/pos")]
public async Task<IActionResult> UpdatePointOfSale(string appId, UpdatePointOfSaleViewModel vm)
{
if (_Currencies.GetCurrencyData(vm.Currency, false) == null)
ModelState.AddModelError(nameof(vm.Currency), "Invalid currency");
try
{
Parse(vm.Template, vm.Currency);
}
catch
{
ModelState.AddModelError(nameof(vm.Template), "Invalid template");
}
if (!ModelState.IsValid)
{
return View(vm);
}
var app = await GetOwnedApp(appId, AppType.PointOfSale);
if (app == null)
return NotFound();
app.SetSettings(new PointOfSaleSettings()
{
Title = vm.Title,
ShowCustomAmount = vm.ShowCustomAmount,
Currency = vm.Currency.ToUpperInvariant(),
Template = vm.Template
});
await UpdateAppSettings(app);
StatusMessage = "App updated";
return RedirectToAction(nameof(ListApps));
}
[HttpGet]
[Route("{appId}/pos")]
public async Task<IActionResult> ViewPointOfSale(string appId)
{
var app = await GetApp(appId, AppType.PointOfSale);
if (app == null)
return NotFound();
var settings = app.GetSettings<PointOfSaleSettings>();
var currency = _Currencies.GetCurrencyData(settings.Currency, false);
double step = currency == null ? 1 : Math.Pow(10, -(currency.Divisibility));
return View(new ViewPointOfSaleViewModel()
{
Title = settings.Title,
Step = step.ToString(CultureInfo.InvariantCulture),
ShowCustomAmount = settings.ShowCustomAmount,
Items = Parse(settings.Template, settings.Currency)
});
}
private async Task<AppData> GetApp(string appId, AppType appType)
{
using (var ctx = _ContextFactory.CreateContext())
{
return await ctx.Apps
.Where(us => us.Id == appId &&
us.AppType == appType.ToString())
.FirstOrDefaultAsync();
}
}
private ViewPointOfSaleViewModel.Item[] Parse(string template, string currency)
{
var input = new StringReader(template);
YamlStream stream = new YamlStream();
stream.Load(input);
var root = (YamlMappingNode)stream.Documents[0].RootNode;
return root
.Children
.Select(kv => new { Key = (kv.Key as YamlScalarNode)?.Value, Value = kv.Value as YamlMappingNode })
.Where(kv => kv.Value != null)
.Select(c => new ViewPointOfSaleViewModel.Item()
{
Id = c.Key,
Title = c.Value.Children
.Select(kv => new { Key = (kv.Key as YamlScalarNode)?.Value, Value = kv.Value as YamlScalarNode })
.Where(kv => kv.Value != null)
.Where(cc => cc.Key == "title")
.FirstOrDefault()?.Value?.Value ?? c.Key,
Price = c.Value.Children
.Select(kv => new { Key = (kv.Key as YamlScalarNode)?.Value, Value = kv.Value as YamlScalarNode })
.Where(kv => kv.Value != null)
.Where(cc => cc.Key == "price")
.Select(cc => new ViewPointOfSaleViewModel.Item.ItemPrice()
{
Value = decimal.Parse(cc.Value.Value, CultureInfo.InvariantCulture),
Formatted = FormatCurrency(cc.Value.Value, currency)
})
.Single()
})
.ToArray();
}
string FormatCurrency(string price, string currency)
{
return decimal.Parse(price, CultureInfo.InvariantCulture).ToString("C", _Currencies.GetCurrencyProvider(currency));
}
[HttpPost]
[Route("{appId}/pos")]
[IgnoreAntiforgeryToken]
public async Task<IActionResult> ViewPointOfSale(string appId,
decimal amount,
string email,
string orderId,
string notificationUrl,
string redirectUrl,
string choiceKey)
{
var app = await GetApp(appId, AppType.PointOfSale);
if (string.IsNullOrEmpty(choiceKey) && amount <= 0)
{
return RedirectToAction(nameof(ViewPointOfSale), new { appId = appId });
}
if (app == null)
return NotFound();
var settings = app.GetSettings<PointOfSaleSettings>();
if (string.IsNullOrEmpty(choiceKey) && !settings.ShowCustomAmount)
{
return RedirectToAction(nameof(ViewPointOfSale), new { appId = appId });
}
string title = null;
var price = 0.0m;
if (!string.IsNullOrEmpty(choiceKey))
{
var choices = Parse(settings.Template, settings.Currency);
var choice = choices.FirstOrDefault(c => c.Id == choiceKey);
if (choice == null)
return NotFound();
title = choice.Title;
price = choice.Price.Value;
}
else
{
if (!settings.ShowCustomAmount)
return NotFound();
price = amount;
title = settings.Title;
}
var store = await GetStore(app);
var invoice = await _InvoiceController.CreateInvoiceCore(new NBitpayClient.Invoice()
{
ItemDesc = title,
Currency = settings.Currency,
Price = price,
BuyerEmail = email,
OrderId = orderId,
NotificationURL = notificationUrl,
RedirectURL = redirectUrl,
FullNotifications = true
}, store, HttpContext.Request.GetAbsoluteRoot());
return Redirect(invoice.Data.Url);
}
private async Task<StoreData> GetStore(AppData app)
{
using (var ctx = _ContextFactory.CreateContext())
{
return await ctx.Stores.FirstOrDefaultAsync(s => s.Id == app.StoreDataId);
}
}
private async Task UpdateAppSettings(AppData app)
{
using (var ctx = _ContextFactory.CreateContext())
{
ctx.Apps.Add(app);
ctx.Entry<AppData>(app).State = EntityState.Modified;
ctx.Entry<AppData>(app).Property(a => a.Settings).IsModified = true;
await ctx.SaveChangesAsync();
}
}
}
}