Eufile

{
  doc: "Build-related transformations for eucalypt"
  import: "cargo=Cargo.toml"
}

` "eucalypt version according to Cargo.toml"
version:
  cargo.package.version
  str.match-with("(\d+)\.(\d+)\.([^.]+)")
  drop(1)
  map(num)
  with-keys([:major, :minor, :patch])
  merge({ build: :dev})

` "Default an environment that looks close to github actions
environment, even locally"
env:
  {
    GITHUB_SERVER_URL: "https://github.com"
    GITHUB_REPOSITORY: "curvelogic/eucalypt"
    GITHUB_RUN_ID:     0
    GITHUB_RUN_NUMBER: version.build
    GITHUB_SHA:        "working-copy"
  } io.env

` "URL for this workflow run"
workflow-url:
     [:GITHUB_SERVER_URL, :GITHUB_REPOSITORY, :GITHUB_RUN_ID]
     map(lookup-in(env))
     apply("{0}/{1}/runs/{2}")

build: {

  ` "Eucalypt build number"
  number: env.GITHUB_RUN_NUMBER

  ` "SHA1 of the repo commit we're building"
  commit: env.GITHUB_SHA

  ` "URL of build"
  url: workflow-url

  ` "Architecture of build environment"
  arch: env lookup-alts([:HOSTTYPE, :_system_arch], "unknown")

  ` "Architecture of build environment"
  os: env lookup-alts([:OSTYPE, :_system_name], "unknown")

  ` "Seconds since epoch at eu build time"
  epoch-time: io.epoch-time

  ` "GitHub environment variables"
  github-env: env filter-items(by-key-match("^GITHUB.*")) block
}

` {target: :version
   format: :text
   doc: "version number for the current build"}
new-version: [version.major,
              version.minor,
              version.patch,
              build.number] map(str.of) str.join-on(".")

` {target: :build-meta
   doc: "build metadata to embed as resource in binary"}
build-meta: {
  version: new-version
  commit: build.commit
  url: build.url
  banner: "eu - Eucalypt (Rust Impl: v{version})"
  eu-build: build
}

` {target: :cargo
   format: :toml
   doc: "updated Cargo.toml with new version number"}
new-package: cargo { package: { version: new-version } }

` { target: :formula-sh
    format: :text
    doc: "Shell incantation to generate homebrew forumula for latest release"}
formula-sh: "
curl https://api.github.com/repos/curvelogic/eucalypt/releases/latest > latest.json
curl -L $(cat latest.json | eu - ci/formula.eu -t latest-asset-url) | shasum -a 256 > shasum.txt
eu -t formula shasum=shasum.txt latest=latest.json ci/formula.eu
"