akkounts/spec/requests/lnurlpay_spec.rb

require 'rails_helper'

RSpec.describe "/lnurlpay", type: :request do
  context "Non-existent user" do
    describe "GET /.well-known/lnurlp/:username" do
      it "returns a 404" do
        get lightning_address_path(username: "csw")
        expect(response).to have_http_status(:not_found)
      end
    end

    describe "GET /lnurlpay/:username/invoice" do
      it "returns a 404" do
        get lnurlpay_invoice_path(username: "csw", params: { amount: 5000 })
        expect(response).to have_http_status(:not_found)
      end
    end

    describe "GET /.well-known/keysend/:username/" do
      it "returns a 404" do
        get lightning_address_keysend_path(username: "csw")
        expect(response).to have_http_status(:not_found)
      end
    end
  end

  context "Valid user" do
    let(:user) { create :user, cn: 'satoshi', ou: 'kosmos.org', ln_account: 'abcdefg123456' }

    before do
      login_as user, :scope => :user
    end

    describe "GET /.well-known/lnurlp/:username" do
      it "returns a formatted Lightning Address response" do
        get lightning_address_path(username: "satoshi")

        expect(response).to have_http_status(:ok)

        res = JSON.parse(response.body)
        expect(res["status"]).to eq('OK')
        expect(res["tag"]).to eq('payRequest')
        expect(res["callback"]).to match(lnurlpay_invoice_path('satoshi'))
        expect(res["minSendable"]).to be_a(Integer)
        expect(res["maxSendable"]).to be_a(Integer)
        expect(res["commentAllowed"]).to be_a(Integer)
      end
    end

    describe "GET /lnurlpay/:username/invoice" do
      before do
        allow_any_instance_of(User).to receive(:ln_create_invoice).and_return("lnbc50u1p3lwgknpp52g78gqya5euvzjc53fc6hkmlm2rfjhcd305tcmc0g9gaestav48sdq4gdhkven9v5sx6mmwv4ujzcqzpgxqyz5vqsp5skkz4jlqr6tkvv2g9739ygrjupc4rkqd94mc7dfpj3pgx3f6w7qs9qyyssq7mf3fzcuxlmkr9nqatcch3u8uf4gjyawe052tejz8e9fqxu4pncqk3qklt8g6ylpshg09xyjquyrgtc72vcw5cp0dzcf406apyua7dgpnfn7an")
      end

      it "returns a formatted lnurlpay response" do
        get lnurlpay_invoice_path(username: "satoshi", params: {
          amount: 50000, comment: "Coffee time!"
        })

        expect(response).to have_http_status(:ok)

        res = JSON.parse(response.body)
        expect(res["status"]).to eq('OK')
        expect(res["successAction"]["tag"]).to eq('message')
        expect(res["successAction"]["message"]).to match('Thank you')
        expect(res["pr"]).to eq("lnbc50u1p3lwgknpp52g78gqya5euvzjc53fc6hkmlm2rfjhcd305tcmc0g9gaestav48sdq4gdhkven9v5sx6mmwv4ujzcqzpgxqyz5vqsp5skkz4jlqr6tkvv2g9739ygrjupc4rkqd94mc7dfpj3pgx3f6w7qs9qyyssq7mf3fzcuxlmkr9nqatcch3u8uf4gjyawe052tejz8e9fqxu4pncqk3qklt8g6ylpshg09xyjquyrgtc72vcw5cp0dzcf406apyua7dgpnfn7an")
      end

      describe "amount too low" do
        it "returns an error" do
          get lnurlpay_invoice_path(username: "satoshi", params: {
            amount: 5000, comment: "Coffee time!"
          })

          expect(response).to have_http_status(:ok)

          res = JSON.parse(response.body)
          expect(res["status"]).to eq('ERROR')
          expect(res["reason"]).to eq('Invalid amount')
        end
      end

      describe "comment too long" do
        it "returns an error" do
          get lnurlpay_invoice_path(username: "satoshi", params: {
            amount: 5000000, comment: "Coffee time is the best time, so here's some money for you to get some. May I suggest to sample some Pacamara beans from El Salvador?"
          })

          expect(response).to have_http_status(:ok)

          res = JSON.parse(response.body)
          expect(res["status"]).to eq('ERROR')
          expect(res["reason"]).to eq('Comment too long')
        end
      end

      context "zap request" do
        describe "with invalid request event" do
          it "returns an error" do
            get lnurlpay_invoice_path(username: "satoshi", params: {
              amount: 2100000, nostr: { foo: "bar" }.to_json
            })

            res = JSON.parse(response.body)
            expect(res["status"]).to eq('ERROR')
            expect(res["reason"]).to eq('Invalid zap request')
          end
        end

        describe "with valid request event" do
          let(:event) {
            {
              id: "3cf02d7f0ccd9711c25098fc50b3a7ab880326e4e51cc8c7a7b59f147cff4fff",
              pubkey: "730b43e6f62c2ab22710b046e481802c8ac1108ed2cb9c21dff808d57ba24b6c",
              created_at: 1712487443,
              kind: 9734,
              tags: [
                ["relays", "wss://nostr.kosmos.org", "wss://relay.example.com"],
                ["p", "07e188a1ff87ce171d517b8ed2bb7a31b1d3453a0db3b15379ec07b724d232f3"]],
              content: "",
              sig: "e9e9bb2bac4267a107ab5c3368f504b4f11b8e3b5ae875a1d63c74d6934138d2521dc35815b6f534fc5d803cbf633736d871886368bb8f92c4ad3837a68a06f2"
            }
          }

          it "returns an invoice" do
            expect_any_instance_of(User).to receive(:ln_create_invoice)
              .with(
                amount: 2100,
                memo: "Zapped satoshi@kosmos.org on Nostr",
                description_hash: "540279cd9da15279c8299d6d9ff1ab2a79eb259ee218adf3de393e1abe723077"
            )
              .and_return("lnbc50u1p3lwgknpp52g78gqya5euvzjc53fc6hkmlm2rfjhcd305tcmc0g9gaestav48sdq4gdhkven9v5sx6mmwv4ujzcqzpgxqyz5vqsp5skkz4jlqr6tkvv2g9739ygrjupc4rkqd94mc7dfpj3pgx3f6w7qs9qyyssq7mf3fzcuxlmkr9nqatcch3u8uf4gjyawe052tejz8e9fqxu4pncqk3qklt8g6ylpshg09xyjquyrgtc72vcw5cp0dzcf406apyua7dgpnfn7an")

            get lnurlpay_invoice_path(username: "satoshi", params: {
              amount: 2100000, nostr: event.to_json
            })

            expect(response).to have_http_status(:ok)

            res = JSON.parse(response.body)
            expect(res["status"]).to eq('OK')
            expect(res["pr"]).to match(/^lnbc/)
          end
        end
      end
    end

    describe "GET /.well-known/keysend/:username/" do
      it "returns a formatted Lightning Address keysend response" do
        get lightning_address_keysend_path(username: "satoshi")

        expect(response).to have_http_status(:ok)

        res = JSON.parse(response.body)
        expect(res["status"]).to eq('OK')
        expect(res["tag"]).to eq('keysend')
        expect(res["pubkey"]).to eq(Setting.lndhub_public_key)
        expect(res["customData"][0]["customKey"]).to eq('696969')
        expect(res["customData"][0]["customValue"]).to eq('abcdefg123456')
      end
    end
  end
end