From e1ff5c479e2dff70105a0de1f91225bf39a56104 Mon Sep 17 00:00:00 2001
From: Sebastian Kippe <sebastian@kip.pe>
Date: Mon, 23 May 2022 18:49:55 +0200
Subject: [PATCH] Initial BTCPay integration

---
 .env.example            |  1 +
 .env.production         |  1 +
 app/services/btc_pay.rb | 32 ++++++++++++++++++++++++++++++++
 3 files changed, 34 insertions(+)
 create mode 100644 app/services/btc_pay.rb

diff --git a/.env.example b/.env.example
index ed6e513..99cc4ad 100644
--- a/.env.example
+++ b/.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'
diff --git a/.env.production b/.env.production
index e9bd695..8b61513 100644
--- a/.env.production
+++ b/.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'
diff --git a/app/services/btc_pay.rb b/app/services/btc_pay.rb
new file mode 100644
index 0000000..05c8d82
--- /dev/null
+++ b/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
+    wallet_info = get "stores/#{@store_id}/payment-methods/onchain/BTC/wallet"
+
+    {
+      balance: wallet_info["balance"].to_f,
+      unconfirmed_balance: wallet_info["unconfirmedBalance"].to_f,
+      confirmed_balance: wallet_info["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