parameters:
  rustup_toolchain: 'stable'
  rustup_target: ''
  components: []

steps:
# Linux and macOS.
- script: |
    curl https://sh.rustup.rs -sSf | sh -s -- -y --default-toolchain none
    export PATH=$PATH:$HOME/.cargo/bin
    rustup default ${{ parameters.rustup_toolchain }}
    rustup update
    echo "##vso[task.setvariable variable=PATH;]$PATH:$HOME/.cargo/bin"
  condition: ne( variables['Agent.OS'], 'Windows_NT' )
  displayName: Install rust
# Windows.
- script: |
    curl -sSf -o rustup-init.exe https://win.rustup.rs
    rustup-init.exe -y --default-toolchain none
    set PATH=%PATH%;%USERPROFILE%\.cargo\bin
    rustup default ${{ parameters.rustup_toolchain }}
    rustup update
    echo "##vso[task.setvariable variable=PATH;]%PATH%;%USERPROFILE%\.cargo\bin"
  condition: eq( variables['Agent.OS'], 'Windows_NT' )
  displayName: Install rust (windows)
# All platforms.
- script: |
      rustc -Vv
      cargo -V
  displayName: Query rust and cargo versions
- ${{ if ne(parameters.rustup_target, '') }}:
  - script: |
      rustup target add ${{ parameters.rustup_target }}
    displayName: Install support for ${{ parameters.rustup_target }}
- ${{ each component in parameters.components }}:
  - script: |
      rustup component add ${{ component }}
    displayName: Install ${{ component }}