fix: gen qr codes task (#373)

.gitignore

@@ -123,3 +123,5 @@ tags
 *.in
 temp
 pdf/
+qrs/
+*.zip

lib/mix/tasks/gen.qrcodes.ex

@@ -1,6 +1,9 @@
 defmodule Mix.Tasks.Gen.QrCodes do
   @moduledoc """
   Task to generate the QR codes for the attendees
+
+  Expects FRONTEND_URL variable to be set.
+  Example: https://seium.org
   """
   use Mix.Task
 
@@ -24,17 +27,21 @@ defmodule Mix.Tasks.Gen.QrCodes do
 
     if arg == "attendees" do
       Enum.each(Accounts.list_attendees(), fn attendee ->
-        QrCodeSvg.generate(
-          "#{url}attendees/#{attendee.id}",
-          "attendee_#{attendee.id}.svg"
-        )
+        qr =
+          "#{url}/attendees/#{attendee.id}"
+          |> QRCodeEx.encode()
+          |> QRCodeEx.png(width: 460)
+
+        File.write("qrs/#{attendee.id}.png", qr, [:binary])
       end)
     else
       Enum.each(Contest.list_referrals(), fn referral ->
-        QrCodeSvg.generate(
-          "#{url}referrals/#{referral.id}",
-          "referral_#{referral.id}.svg"
-        )
+        qr =
+          "#{url}/referrals/#{referral.id}"
+          |> QRCodeEx.encode()
+          |> QRCodeEx.png(width: 460)
+
+        File.write("referrals/#{referral.id}.png", qr, [:binary])
       end)
     end
   end

mix.exs

@@ -55,9 +55,9 @@ defmodule Safira.MixProject do
       {:guardian, "~> 2.3"},
       {:comeonin, "~> 5.3"},
       {:bcrypt_elixir, "~> 3.0"},
-      {:qr_code_svg, git: "https://github.com/ondrej-tucek/qr-code-svg", tag: "v1.2.0"},
       {:cors_plug, "~> 3.0"},
       {:arc, "~> 0.11.0"},
+      {:qrcode_ex, "~> 0.1.0"},
       # If using Amazon S3
       {:ex_aws, "~> 2.4"},
       {:ex_aws_s3, "~> 2.3"},

mix.lock

@@ -59,6 +59,7 @@
   "pow": {:hex, :pow, "1.0.31", "5787b9520af180535f05cef4e04ad64f3c1be3b6d407ef9b1a64e9eba5bc66fb", [:mix], [{:ecto, "~> 2.2 or ~> 3.0", [hex: :ecto, repo: "hexpm", optional: false]}, {:phoenix, ">= 1.3.0 and < 1.8.0", [hex: :phoenix, repo: "hexpm", optional: false]}, {:phoenix_html, ">= 2.0.0 and < 4.0.0", [hex: :phoenix_html, repo: "hexpm", optional: false]}, {:phoenix_live_view, ">= 0.18.0", [hex: :phoenix_live_view, repo: "hexpm", optional: true]}, {:plug, ">= 1.5.0 and < 2.0.0", [hex: :plug, repo: "hexpm", optional: true]}], "hexpm", "988d9af08b7380c5b95fc65d1325642dd96defde3f0a7a103c52d5e2390d888f"},
   "qr_code_svg": {:git, "https://github.com/ondrej-tucek/qr-code-svg", "febda672fcde25cc071ee84b556f650237751361", [tag: "v1.2.0"]},
   "qrcode": {:git, "https://github.com/sunboshan/qrcode.git", "f6855c378b0d11e2aef6fb8c071280f367350643", [tag: nil]},
+  "qrcode_ex": {:hex, :qrcode_ex, "0.1.1", "8907a7558325babd30f7f43ff85a0169ef65c30820d68e90d792802318f9a062", [:mix], [], "hexpm", "9eb0b397fb3a1c3b16e55b6de6f845a0b4e7b7100ade39eb59fad98fb62455a7"},
   "quantum": {:hex, :quantum, "3.5.0", "8d2c5ba68c55991e8975aca368e3ab844ba01f4b87c4185a7403280e2c99cf34", [:mix], [{:crontab, "~> 1.1", [hex: :crontab, repo: "hexpm", optional: false]}, {:gen_stage, "~> 0.14 or ~> 1.0", [hex: :gen_stage, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4.3 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}, {:telemetry_registry, "~> 0.2", [hex: :telemetry_registry, repo: "hexpm", optional: false]}], "hexpm", "cab737d1d9779f43cb1d701f46dd05ea58146fd96238d91c9e0da662c1982bb6"},
   "ranch": {:hex, :ranch, "1.8.0", "8c7a100a139fd57f17327b6413e4167ac559fbc04ca7448e9be9057311597a1d", [:make, :rebar3], [], "hexpm", "49fbcfd3682fab1f5d109351b61257676da1a2fdbe295904176d5e521a2ddfe5"},
   "scrivener": {:hex, :scrivener, "2.7.2", "1d913c965ec352650a7f864ad7fd8d80462f76a32f33d57d1e48bc5e9d40aba2", [:mix], [], "hexpm", "7866a0ec4d40274efbee1db8bead13a995ea4926ecd8203345af8f90d2b620d9"},