Initial commit

src/setup-elixir.js

@@ -0,0 +1,55 @@
+const core = require('@actions/core')
+const {exec} = require('@actions/exec')
+const {installElixir, installOTP} = require('./installer')
+const {readFile} = require('fs').promises
+const path = require('path')
+const semver = require('semver')
+
+main().catch(err => {
+  core.setFailed(err.message)
+})
+
+async function main() {
+  checkPlatform()
+
+  const otpSpec = core.getInput('otp-version', {required: true})
+  const elixirSpec = core.getInput('elixir-version', {required: true})
+  const otpVersion = await getVersion(
+    otpSpec,
+    path.join(__dirname, 'erlang-versions.txt')
+  )
+  const elixirVersion = await getVersion(
+    elixirSpec,
+    path.join(__dirname, 'elixir-versions.txt')
+  )
+
+  let installHex = core.getInput('install-hex')
+  installHex = installHex == null ? true : installHex
+  let installRebar = core.getInput('install-rebar')
+  installRebar = installRebar == null ? true : installRebar
+
+  console.log(`##[group]Installing OTP ${otpVersion}`)
+  await installOTP(otpVersion)
+  console.log(`##[endgroup]`)
+
+  console.log(`##[group]Installing Elixir ${elixirVersion}`)
+  await installElixir(elixirVersion)
+  console.log(`##[endgroup]`)
+
+  if (installRebar) await exec('mix local.rebar --force')
+  if (installHex) await exec('mix local.hex --force')
+}
+
+function checkPlatform() {
+  if (process.platform !== 'linux')
+    throw new Error(
+      '@actions/setup-elixir only supports Ubuntu Linux at this time'
+    )
+}
+
+async function getVersion(spec, versionFile) {
+  const range = semver.validRange(spec)
+  const versions = (await readFile(versionFile)).toString().split('\n')
+  const version = semver.maxSatisfying(versions, range)
+  return version || spec
+}