version: '3'

requires:
  vars: [OUTPUT_BASE]

tasks:
  prometheus:debug:
    cmds:
      - echo {{.GOOS}}

  prometheus:download-*-*:
    desc: Download and extract prometheus binary
    vars:
      VERSION: '2.53.4'
      GOOS: '{{index .MATCH 0}}'
      GOARCH: '{{index .MATCH 1}}'
      TEMPFILE: {sh: mktemp}
      SHA256: '{{printf "%v/%v" .GOOS .GOARCH | get
          (dict
            "linux/amd64" "b8b497c4610d1b93208252b60c8f20f6b2e78596ae8df43397a2e805aa53d475"
            "linux/arm64" "ec7236ecea7154d0bfe142921708b1ae7b5e921e100e0ee85ab92b7c444357e0"
            "darwin/amd64" "10066a1aa21c4ddb8d5e61c31b52e898d8ac42c7e99fd757e2fc4b6c20b8075f"
            "darwin/arm64" "cb3e638d8e9b4b27a6aa1f45a4faa3741b548aac67d4649aea7a2fad3c09f0a1"
          )
        }}'
      TARGET_DIR: '{{joinPath .OUTPUT_BASE "prometheus" .GOOS .GOARCH}}'
      TARGET: '{{joinPath .TARGET_DIR "prometheus"}}'
    generates: ['{{.TARGET}}']
    sources: ['Taskfile.yml']
    preconditions:
      - {sh: "[[ '{{.GOOS}}' =~ 'linux|darwin' ]]", msg: "invalid GOOS {{.GOOS}}"}
      - {sh: "[[ '{{.GOARCH}}' =~ 'amd64|arm64' ]]", msg: "invalid GOARCH {{.GOARCH}}"}
    cmds:
      - node '{{joinPath .ROOT_DIR "src/build/download_file.mjs"}}' --url='https://github.com/prometheus/prometheus/releases/download/v{{.VERSION}}/prometheus-{{.VERSION}}.{{.GOOS}}-{{.GOARCH}}.tar.gz' --out='{{.TEMPFILE}}' --sha256='{{.SHA256}}'
      - defer: rm -f '{{.TEMPFILE}}'
      - mkdir -p '{{.TARGET_DIR}}'
      - tar -zx -f '{{.TEMPFILE}}' --strip-components=1 -C '{{.TARGET_DIR}}' 'prometheus-{{.VERSION}}.{{.GOOS}}-{{.GOARCH}}/prometheus'
      - chmod +x '{{.TARGET}}'

  prometheus:copy-*-*:
    desc: Copy prometheus binary to target directory
    requires:
      vars: [TARGET_DIR]
    vars:
      GOOS: '{{index .MATCH 0}}'
      GOARCH: '{{index .MATCH 1}}'
    cmds:
      - task: prometheus:download-{{.GOOS}}-{{.GOARCH}}
      - mkdir -p '{{.TARGET_DIR}}'
      - cp -R '{{joinPath .OUTPUT_BASE "prometheus" .GOOS .GOARCH}}'/* '{{.TARGET_DIR}}/'