Add elixir workflows

.github/workflows/elixir-package.yml

@@ -0,0 +1,19 @@
+name: Elixir Package
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - "main"
+    paths:
+      - "eventsub.json"
+      - "packages/elixir/**"
+jobs:
+  call-test:
+    uses: ./.github/workflows/elixir-test.yml
+
+  build-and-publish:
+    name: Build and Publish
+    needs: call-test
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo "TODO - Build package"

.github/workflows/elixir-test.yml

@@ -0,0 +1,92 @@
+name: Elixir Test
+on:
+  workflow_call:
+  pull_request:
+    branches:
+      - "main"
+    paths:
+      - "eventsub.json"
+      - "packages/elixir/**"
+jobs:
+  test:
+    name: Test
+    runs-on: ${{matrix.os}}
+    strategy:
+      matrix:
+        os: ["ubuntu-latest"]
+        elixir: ["1.16.x"]
+        otp: ["26.x"]
+    steps:
+      # Setup.
+      - name: Checkout repo
+        uses: actions/checkout@v3
+        with:
+          sparse-checkout: "packages/elixir"
+          sparse-checkout-cone-mode: false
+
+      - name: Set up Elixir
+        id: beam
+        uses: erlef/setup-beam@v1
+        with:
+          elixir-version: ${{matrix.elixir}}
+          otp-version: ${{matrix.otp}}
+
+      # Build cache.
+      - name: Build cache
+        uses: actions/cache/restore@v3
+        with:
+          path: _build
+          key: build-${{matrix.os}}-${{matrix.otp}}-${{matrix.elixir}}-${{ hashFiles('lib/**/*.ex') }}
+          restore-keys: build-${{matrix.os}}-${{matrix.otp}}-${{matrix.elixir}}-
+
+      # Get and compile elixir deps.
+      - name: Elixir Deps cache
+        uses: actions/cache/restore@v3
+        with:
+          path: deps
+          key: mix-${{ matrix.os }}-${{ matrix.elixir }}-${{ matrix.otp }}-${{ hashFiles('**/mix.lock') }}
+          restore-keys: mix-${{ matrix.os }}-${{ matrix.elixir }}-${{ matrix.otp }}-
+      - run: mix deps.get
+      - run: mix deps.compile
+
+      # Compile :dev and :test.
+      - run: MIX_ENV=dev mix compile --warnings-as-errors
+      - run: MIX_ENV=test mix compile
+
+      # Check for unused dependencies.
+      - run: mix deps.unlock --check-unused
+
+      # Check code quality and style.
+      - run: mix format --check-formatted
+      - run: mix credo
+
+      - run: mix test --warnings-as-errors
+
+      # Restore Dialyzer cache
+      - name: Restore PLT cache
+        uses: actions/cache/restore@v3
+        id: plt_cache
+        with:
+          path: priv/plts
+          key: plt-${{ matrix.os }}-${{ matrix.elixir }}-${{ matrix.otp }}
+          restore-keys: plt-${{ matrix.os }}-${{ matrix.elixir }}-${{ matrix.otp }}
+
+      # Create PLTs if no cache was found
+      - name: Create PLTs
+        if: steps.plt_cache.outputs.cache-hit != 'true'
+        run: mix dialyzer --plt
+
+      # By default, the GitHub Cache action will only save the cache if all steps in the job succeed,
+      # so we separate the cache restore and save steps in case running dialyzer fails.
+      - name: Save PLT cache
+        id: plt_cache_save
+        uses: actions/cache/save@v3
+        if: steps.plt_cache.outputs.cache-hit != 'true'
+        with:
+          key: |
+            plt-${{ runner.os }}-${{ steps.beam.outputs.otp-version }}-${{ steps.beam.outputs.elixir-version }}-${{ hashFiles('**/mix.lock') }}
+          path: |
+            priv/plts
+
+      - name: Run dialyzer
+        run: mix dialyzer --format github

packages/elixir/.gitignore

@@ -24,3 +24,6 @@ twitch_eventsub_types-*.tar
 
 # Temporary files, for example, from tests.
 /tmp/
+
+/priv/plts/*.plt
+/priv/plts/*.plt.hash

packages/elixir/mix.exs

@@ -7,7 +7,8 @@ defmodule TwitchEventSub.MixProject do
       version: "0.1.0",
       elixir: "~> 1.16",
       start_permanent: Mix.env() == :prod,
-      deps: deps()
+      deps: deps(),
+      dialyzer: [plt_file: {:no_warn, "priv/plts/project.plt"}]
     ]
   end
 
@@ -21,8 +22,8 @@ defmodule TwitchEventSub.MixProject do
   # Run "mix help deps" to learn about dependencies.
   defp deps do
     [
-      # {:dep_from_hexpm, "~> 0.3.0"},
-      # {:dep_from_git, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
+      {:credo, "~> 1.7", only: [:dev, :test], runtime: false},
+      {:dialyxir, "~> 1.4", only: [:dev, :test], runtime: false}
     ]
   end
 end