name: Installa OpenCode
description: Installa opencode-ai globalmente tramite npm.

inputs:
  version:
    description: "Versione di opencode da installare (default: latest)."
    required: false
    default: ""

runs:
  using: composite
  steps:
    - name: Verifica prerequisiti e installa npm se assente
      shell: bash
      run: |
        set -euo pipefail
        if ! command -v node &> /dev/null; then
          echo "ERRORE: node non trovato. Installa Node.js sul runner."
          exit 1
        fi
        if ! command -v npm &> /dev/null; then
          echo "npm non trovato, tentativo di installazione..."
          if command -v apt-get &> /dev/null; then
            apt-get update -qq && apt-get install -y -qq npm 2>&1 || true
          elif command -v apk &> /dev/null; then
            apk add --no-cache npm 2>&1 || true
          fi
          if ! command -v npm &> /dev/null; then
            echo "ERRORE: impossibile installare npm."
            exit 1
          fi
        fi
        echo "node $(node --version), npm $(npm --version)"

    - name: Installa opencode
      shell: bash
      run: |
        set -euo pipefail
        if command -v opencode &> /dev/null; then
          echo "opencode già installato: $(opencode --version)"
          exit 0
        fi
        VERSION="${{ inputs.version }}"
        if [ -n "$VERSION" ]; then
          npm install -g "opencode-ai@${VERSION}"
        else
          npm install -g opencode-ai
        fi
        echo "opencode installato: $(opencode --version)"