install github action to build and test on commit

.github/workflows/continuous-integration.yml

@@ -0,0 +1,124 @@
+# Continuous Integration (CI) to Build & Test & Coverage & Lint.
+# ~~
+name: CI
+on:
+  pull_request:
+    branches: [ main, '**' ]
+  push:
+    branches: [ main ]
+
+jobs:
+  validate:
+    name: Validate Code
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup JDK
+        uses: actions/setup-java@v3
+        with:
+          distribution: corretto
+          java-version: '11'
+          cache: 'sbt'
+
+      - name: Validate Code
+        run: sbt validateCode
+
+  build:
+    name: Build & Test
+    needs: [ validate ]
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: true
+      matrix:
+        scala: [ '2.12.15', '2.13.10', '3.2.2' ]
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup JDK
+        uses: actions/setup-java@v3
+        with:
+          distribution: 'corretto'
+          java-version: '8'
+          cache: 'sbt'
+
+      - name: Build & Test
+        run: sbt ++${{ matrix.scala }} testWithCoverage
+
+      - name: Upload coverage report (Cobertura)
+        uses: actions/[email protected]
+        with:
+          name: cobertura.xml
+          path: ${{github.workspace}}/target/scala-2.13/coverage-report/cobertura.xml
+
+      - name: Upload coverage report (HTML)
+        uses: actions/[email protected]
+        with:
+          name: scoverage-report-html
+          path: ${{github.workspace}}/target/scala-2.13/scoverage-report/
+
+  optional-build:
+    name: Build (Optional)
+    continue-on-error: ${{ matrix.experimental }}
+    needs: [ validate ]
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: true
+      matrix:
+        distribution: [ 'corretto' ]
+        jdk: [ '11' ]
+        scala: [ '2.12.15', '2.13.10', '3.2.2' ]
+        experimental: [ false ]
+        include:
+          - jdk: '17'
+            distribution: 'corretto'
+            scala: '2.13.10'
+            experimental: true
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Setup JDK
+        uses: actions/setup-java@v3
+        with:
+          distribution: ${{ matrix.distribution }}
+          java-version: ${{ matrix.jdk }}
+          cache: 'sbt'
+
+      - name: Perform Build / Test
+        run: sbt ++${{ matrix.scala }} compile test
+
+  coverage:
+    name: Coverage Report
+    if: ${{ github.event.pull_request }}
+    needs: [ build ]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v3
+        with:
+          name: cobertura.xml
+
+      - name: Analyzing coverage report
+        uses: 5monkeys/cobertura-action@master
+        with:
+          path: cobertura.xml
+          only_changed_files: true
+          fail_below_threshold: true
+          show_missing: true
+          show_line: true
+          show_branch: true
+          show_class_names: true
+          link_missing_lines: true
+          minimum_coverage: 75
+
+  ready-to-merge:
+    name: Ready to Merge
+    if: ${{ github.event.pull_request }}
+    needs: [ optional-build, coverage ]
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo 'Ready to merge.'

.scalafix.conf

@@ -0,0 +1,10 @@
+rules = [
+  DisableSyntax,
+  ExplicitResultTypes,
+  LeakingImplicitClassVal,
+  NoAutoTupling,
+  NoValInForComprehension,
+  ProcedureSyntax,
+  RedundantSyntax,
+  RemoveUnused
+]

.scalafmt.conf

@@ -0,0 +1,2 @@
+version = 3.7.4
+runner.dialect = scala213

build.sbt

@@ -24,16 +24,27 @@ lazy val guice = (project in file("openai-guice"))
   .dependsOn(client)
   .aggregate(client_stream)
 
-
 // POM settings for Sonatype
-ThisBuild / homepage := Some(url("https://github.com/cequence-io/openai-scala-client"))
+ThisBuild / homepage := Some(
+  url("https://github.com/cequence-io/openai-scala-client")
+)
 
 ThisBuild / sonatypeProfileName := "io.cequence"
 
-ThisBuild / scmInfo := Some(ScmInfo(url("https://github.com/cequence-io/openai-scala-client"), "scm:[email protected]:cequence-io/openai-scala-client.git"))
+ThisBuild / scmInfo := Some(
+  ScmInfo(
+    url("https://github.com/cequence-io/openai-scala-client"),
+    "scm:[email protected]:cequence-io/openai-scala-client.git"
+  )
+)
 
 ThisBuild / developers := List(
-  Developer("bnd", "Peter Banda", "[email protected]", url("https://peterbanda.net"))
+  Developer(
+    "bnd",
+    "Peter Banda",
+    "[email protected]",
+    url("https://peterbanda.net")
+  )
 )
 
 ThisBuild / licenses += "MIT" -> url("https://opensource.org/licenses/MIT")
@@ -44,4 +55,43 @@ ThisBuild / sonatypeCredentialHost := "s01.oss.sonatype.org"
 
 ThisBuild / sonatypeRepository := "https://s01.oss.sonatype.org/service/local"
 
-ThisBuild / publishTo := sonatypePublishToBundle.value
+ThisBuild / publishTo := sonatypePublishToBundle.value
+
+addCommandAlias(
+  "validateCode",
+  List(
+    "scalafix",
+    "scalafmtSbtCheck",
+    "scalafmtCheckAll",
+    "test:scalafix",
+    "test:scalafmtCheckAll"
+  ).mkString(";")
+)
+
+addCommandAlias(
+  "formatCode",
+  List(
+    "scalafmt",
+    "scalafmtSbt",
+    "Test/scalafmt"
+  ).mkString(";")
+)
+
+addCommandAlias(
+  "testWithCoverage",
+  List(
+    "coverage",
+    "test",
+    "coverageReport"
+  ).mkString(";")
+)
+
+
+inThisBuild(
+  List(
+    scalacOptions += "-Ywarn-unused",
+    scalaVersion := "2.12.15",
+    semanticdbEnabled := true,
+    semanticdbVersion := scalafixSemanticdb.revision
+  )
+)

project/plugins.sbt

@@ -1,4 +1,13 @@
 logLevel := Level.Warn
 
 addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.9.15")
-addSbtPlugin("com.github.sbt" % "sbt-pgp" % "2.1.2")
+addSbtPlugin("com.github.sbt" % "sbt-pgp" % "2.1.2")
+addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.11.0")
+addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.0")
+
+
+// Test Coverage plugin.
+// ~
+// sbt-scoverage is a plugin for SBT that integrates the scoverage code coverage library.
+// See more: https://github.com/scoverage/sbt-scoverage
+addSbtPlugin("org.scoverage" % "sbt-scoverage" % "2.0.8")