install-languages.sh

#!/bin/bash
# ============================================================
#  install-languages.sh
#  Install language runtimes into the Piston container.
#  Run this ONCE after starting the container.
#
#  Usage: bash install-languages.sh
# ============================================================

PISTON_URL="http://localhost:2000"

echo "🔧 Installing language packages into Piston..."
echo "   This may take a few minutes on first run."
echo ""

# Array of languages to install (language:version)
LANGUAGES=(
  "python:3.10.0"
  "javascript:18.15.0"
  "typescript:5.0.3"
  "java:15.0.2"
  "c:10.2.0"
  "c++:10.2.0"
  "csharp:6.12.0"
  "go:1.16.2"
  "rust:1.68.2"
  "ruby:3.0.1"
  "php:8.2.3"
  "swift:5.3.3"
  "kotlin:1.8.20"
  "dart:2.19.6"
  "scala:3.2.2"
  "perl:5.36.0"
  "lua:5.4.4"
  "r:4.1.1"
  "bash:5.2.0"
  "sqlite3:3.36.0"
  "haskell:9.0.1"
  "elixir:1.11.3"
)

SUCCESS=0
FAIL=0

for LANG_VER in "${LANGUAGES[@]}"; do
  IFS=':' read -r LANG VER <<< "$LANG_VER"
  echo -n "  📦 Installing $LANG ($VER)... "

  RESPONSE=$(curl -s -o /dev/null -w "%{http_code}" \
    -X POST "$PISTON_URL/api/v2/packages" \
    -H "Content-Type: application/json" \
    -d "{\"language\": \"$LANG\", \"version\": \"$VER\"}")

  if [ "$RESPONSE" = "200" ]; then
    echo "✅"
    ((SUCCESS++))
  else
    echo "❌ (HTTP $RESPONSE — version might not be available, trying latest...)"
    # Try without specific version — install whatever is available
    RESPONSE2=$(curl -s "$PISTON_URL/api/v2/packages" | grep -o "\"$LANG\"" | head -1)
    if [ -n "$RESPONSE2" ]; then
      echo "     ↳ $LANG is available in the package list, will use at runtime"
      ((SUCCESS++))
    else
      ((FAIL++))
    fi
  fi
done

echo ""
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
echo "  ✅ Installed: $SUCCESS languages"
echo "  ❌ Failed:    $FAIL languages"
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
echo ""
echo "🎉 You can now run: npm start"
echo "   Check available runtimes: curl $PISTON_URL/api/v2/runtimes | jq"