action.yml

name: 'Install Simulators if Needed'
description: 'Downloads and installs simulator runtimes for non-default Xcode versions'

inputs:
  xcode_version:
    description: 'The Xcode version being used'
    required: true
    type: string
  platform:
    description: 'The platform to install simulators for'
    required: true
    type: string

runs:
  using: "composite"
  steps:
    - name: Install Simulators if Needed
      shell: bash
      run: |
        XCODE_VERSION="${{ inputs.xcode_version }}"
        PLATFORM="${{ inputs.platform }}"
        DEFAULT_XCODE_VERSION="26.5"

        # Skip for macOS as it doesn't need simulators
        if [[ "$PLATFORM" == "macOS" ]]; then
          echo "macOS doesn't need simulator downloads"
          exit 0
        fi

        # Skip for the default Xcode version — simulators are pre-installed
        if [[ "$XCODE_VERSION" == "$DEFAULT_XCODE_VERSION" ]]; then
          echo "Using default Xcode ${DEFAULT_XCODE_VERSION}, simulators are pre-installed"
          exit 0
        fi

        # Switch to the target Xcode version
        XCODE_PATH="/Applications/Xcode_${XCODE_VERSION}.app"
        if [[ ! -d "$XCODE_PATH" ]]; then
          echo "Xcode not found at $XCODE_PATH"
          exit 1
        fi

        echo "Switching to Xcode ${XCODE_VERSION}..."
        sudo xcode-select -switch "${XCODE_PATH}/Contents/Developer"
        xcodebuild -version

        echo "Simulators before download:"
        xcrun simctl list runtimes || true

        echo "Downloading $PLATFORM runtime for Xcode ${XCODE_VERSION}..."
        sudo xcodebuild -downloadPlatform "$PLATFORM" || echo "Failed to download $PLATFORM platform"

        echo "Simulators after download:"
        xcrun simctl list runtimes || true