Add kredits API with wallet balance endpoint

Reviewed-on: #70

.env.example

@@ -1,3 +1,4 @@
 EJABBERD_API_URL='https://xmpp.kosmos.org/api'
+BTCPAY_API_URL='http://localhost:23001'
 LNDHUB_API_URL='http://localhost:3023'
 LNDHUB_PUBLIC_URL='https://lndhub.kosmos.org'

.env.production

@@ -1,3 +1,4 @@
 EJABBERD_API_URL='https://xmpp.kosmos.org:5443/api'
+BTCPAY_API_URL='http://10.1.1.163:23001'
 LNDHUB_API_URL='http://10.1.1.163:3023'
 LNDHUB_PUBLIC_URL='https://lndhub.kosmos.org'

.env.test

@@ -1,3 +1,4 @@
 EJABBERD_API_URL='http://xmpp.example.com/api'
+BTCPAY_API_URL='http://btcpay.example.com'
 LNDHUB_API_URL='http://localhost:3023'
 LNDHUB_PUBLIC_URL='https://lndhub.kosmos.org'

app/assets/stylesheets/components/base.css

@@ -1,4 +1,8 @@
 @layer base {
+  html {
+    font-size: 14px;
+  }
+
   body {
     @apply leading-none bg-cover bg-fixed;
     background-image: linear-gradient(35deg, rgba(255,0,255,0.2) 0, rgba(13,79,153,0.8) 100%), url('/img/bg-1.jpg');

app/controllers/api/base_controller.rb

@@ -0,0 +1,5 @@
+class Api::BaseController < ApplicationController
+
+  layout false
+
+end

app/controllers/api/kredits_controller.rb

@@ -0,0 +1,12 @@
+class Api::KreditsController < Api::BaseController
+
+  def onchain_btc_balance
+    btcpay = BtcPay.new
+    balance = btcpay.onchain_wallet_balance
+    render json: balance
+  rescue
+    render json: { error: 'Failed to fetch wallet balance' },
+           status: 500
+  end
+
+end

app/services/btc_pay.rb

@@ -0,0 +1,32 @@
+#
+# API Docs: https://docs.btcpayserver.org/API/Greenfield/v1/
+#
+class BtcPay
+  def initialize
+    @base_url = "#{ENV["BTCPAY_API_URL"]}/api/v1"
+    @store_id = Rails.application.credentials.btcpay[:store_id]
+    @auth_token = Rails.application.credentials.btcpay[:auth_token]
+  end
+
+  def onchain_wallet_balance
+    res = get "stores/#{@store_id}/payment-methods/onchain/BTC/wallet"
+
+    {
+      balance: res["balance"].to_f,
+      unconfirmed_balance: res["unconfirmedBalance"].to_f,
+      confirmed_balance: res["confirmedBalance"].to_f
+    }
+  end
+
+  private
+
+  def get(endpoint)
+    res = Faraday.get("#{@base_url}/#{endpoint}", {}, {
+      "Content-Type" => "application/json",
+      "Accept" => "application/json",
+      "Authorization" => "token #{@auth_token}"
+    })
+
+    JSON.parse(res.body)
+  end
+end

app/views/dashboard/index.html.erb

@@ -25,7 +25,7 @@
       </div>
       <div>
         <h3 class="mb-3.5">
-          <span class="text-yellow-500">🗲</span>
+          <%= render partial: "icons/zap", locals: { custom_class: "text-amber-500 h-4 w-4 inline" } %>
           <%= link_to "Lightning Wallet", wallet_path, class: "ks-text-link" %>
         </h3>
         <p class="text-gray-500">

config/credentials.yml.enc

@@ -1 +1 @@
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--IYQBMD+Tar1g+srm--01E5mujYFWvcpT8Qd9HxiA==

config/credentials/development.key

@@ -1 +0,0 @@
-2a8a17892dd9f41ea50c61310c83240b

config/credentials/development.yml.enc

@@ -1 +0,0 @@
-zdpQvlbfqXzaExLzw2LGZkXj97HH42jWZFSTlINpf/HlFr6NubPxLkVxeGsittJj5rm8yL+V21zPxp30Z7Q7R45qyCKFtevtVeqb+u1nZ/FsVfkwb/7wDW9scurgXw==--SB6C0aaNf8qPdteG--9hP+6tpsMnyiAVVvAIq+7w==

config/credentials/test.yml.enc

@@ -1 +1 @@
-xgPOFd8315z7lFtTR5/nD6WDBM2M6Grt/pmkCPdaqlw0WAmFKzbiRGFsXoUQ02JNzvT1/FVtBSsAcyK1Pdr1QQztlWC+/ywaflloMBS4//D8IEXvEgCK6uff5gcf1A==--WbFrw9advCJ4mqsK--HTVHZqO0ddG1toFpY0KKgQ==
+IIjYiPSeZeMFhH8i8v8akXN4JrtGU+OsMQ8GAao/gVdesggriCBAQ8z+Vd0cmTf1SKYeT3OQDgygEekupr325P4eD9fZ+yi56EA/UMXQXMDVZAvZw7iwvKaOXpqisbWdJnomr1GXrHyR415Ce/Fxft3fgXDwMHJW2u+dDJgpE09uORnB9GXycFwHQmoIdXo=--iQ/Vcm0VcwHgUkwQ--tKHQW/45gM/s/NplqGPaxw==

config/ldap.yml

@@ -46,11 +46,11 @@ test:
   # <<: *AUTHORIZATIONS
 
 production:
-  host: ldap.kosmos.org
-  port: 636
+  host: ldap.kosmos.local
+  port: 389
   attribute: cn
   base: ou=kosmos.org,cn=users,dc=kosmos,dc=org
   admin_user: <%= Rails.application.credentials.ldap[:username] rescue nil %>
   admin_password: <%= Rails.application.credentials.ldap[:password] rescue nil %>
-  ssl: simple_tls
+  # ssl: false
   # <<: *AUTHORIZATIONS

config/routes.rb

@@ -25,6 +25,10 @@ Rails.application.routes.draw do
   get 'lnurlpay/:address', to: 'lnurlpay#index', constraints: { address: /[^\/]+/}
   get 'lnurlpay/:address/invoice', to: 'lnurlpay#invoice', constraints: { address: /[^\/]+/}
 
+  namespace :api do
+    get 'kredits/onchain_btc_balance', to: 'kredits#onchain_btc_balance'
+  end
+
   namespace :admin do
     root to: 'dashboard#index'
     get 'invitations', to: 'invitations#index'

lib/tasks/lndhub.rake

@@ -5,4 +5,20 @@ namespace :lndhub do
       CreateLndhubWalletJob.perform_later(user)
     end
   end
+
+  desc "List wallet balances"
+  task :balances => :environment do |t, args|
+    sum = 0
+    User.all.each do |user|
+      lndhub = Lndhub.new
+      auth_token = lndhub.authenticate(user)
+      data = lndhub.balance(auth_token)
+      balance = data["BTC"]["AvailableBalance"] rescue nil
+      if balance && balance > 0
+        sum += balance
+        puts "#{user.address}: #{balance} sats"
+      end
+    end
+    puts "--\nSum of user balances: #{sum} sats"
+  end
 end

spec/requests/api/kredits_spec.rb

@@ -0,0 +1,43 @@
+require 'rails_helper'
+require 'webmock/rspec'
+
+RSpec.describe "/api/kredits", type: :request do
+
+  describe "GET /onchain_btc_balance" do
+    before do
+      stub_request(:get, "http://btcpay.example.com/api/v1/stores/123456/payment-methods/onchain/BTC/wallet")
+        .to_return(status: 200, headers: {}, body: {
+          balance: 0.91108606,
+          unconfirmedBalance: 0,
+          confirmedBalance: 0.91108606
+        }.to_json)
+    end
+
+    it "returns a formatted result for the onchain wallet balance" do
+      get api_kredits_onchain_btc_balance_path
+
+      expect(response).to have_http_status(:ok)
+
+      res = JSON.parse(response.body)
+      expect(res["balance"]).to eq(0.91108606)
+      expect(res["unconfirmed_balance"]).to eq(0)
+      expect(res["confirmed_balance"]).to eq(0.91108606)
+    end
+
+    context "upstream request error" do
+      before do
+        stub_request(:get, "http://btcpay.example.com/api/v1/stores/123456/payment-methods/onchain/BTC/wallet")
+          .to_return(status: 500, headers: {}, body: "")
+      end
+
+      it "returns a formatted error" do
+        get api_kredits_onchain_btc_balance_path
+
+        expect(response).to have_http_status(:server_error)
+
+        res = JSON.parse(response.body)
+        expect(res["error"]).not_to be_nil
+      end
+    end
+  end
+end