#!/bin/bash
#
# Deploy circular dependency verification pattern to all NestJS services
#
# Usage: ./scripts/deploy-verify-pattern.sh [--dry-run]
#

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
DRY_RUN=false

# Parse arguments
if [[ "${1:-}" == "--dry-run" ]]; then
  DRY_RUN=true
  echo "🔍 DRY RUN MODE - No files will be modified"
  echo ""
fi

# Template verification script
VERIFY_SCRIPT_TEMPLATE="$PROJECT_ROOT/codebase/features/landing/backend-api/scripts/verify-circular-deps.mjs"

if [[ ! -f "$VERIFY_SCRIPT_TEMPLATE" ]]; then
  echo "❌ Template not found: $VERIFY_SCRIPT_TEMPLATE"
  exit 1
fi

echo "📋 Deploying verification pattern to all NestJS services..."
echo ""

DEPLOYED=0
SKIPPED=0
FAILED=0

# Find all backend-api directories
while IFS= read -r -d '' service_dir; do
  service_name=$(basename "$(dirname "$service_dir")")/backend-api

  echo "📦 Processing: $service_name"

  # Check if it's a NestJS project
  if [[ ! -f "$service_dir/package.json" ]]; then
    echo "   ⏭️  Skipped: No package.json"
    ((SKIPPED++))
    echo ""
    continue
  fi

  if ! grep -q '"@nestjs/core"' "$service_dir/package.json"; then
    echo "   ⏭️  Skipped: Not a NestJS project"
    ((SKIPPED++))
    echo ""
    continue
  fi

  if [[ "$DRY_RUN" == true ]]; then
    echo "   📄 Would create: scripts/verify-circular-deps.mjs"
    echo "   📝 Would update: package.json (add 'verify' script)"
    ((DEPLOYED++))
    echo ""
    continue
  fi

  # Create scripts directory
  mkdir -p "$service_dir/scripts"

  # Copy verification script
  cp "$VERIFY_SCRIPT_TEMPLATE" "$service_dir/scripts/verify-circular-deps.mjs"
  chmod +x "$service_dir/scripts/verify-circular-deps.mjs"

  # Add verify script to package.json if not exists
  if ! grep -q '"verify"' "$service_dir/package.json"; then
    # Use jq if available, otherwise sed
    if command -v jq &> /dev/null; then
      tmp=$(mktemp)
      jq '.scripts.verify = "pnpm build && node scripts/verify-circular-deps.mjs"' \
        "$service_dir/package.json" > "$tmp"
      mv "$tmp" "$service_dir/package.json"
      echo "   ✅ Deployed (using jq)"
    else
      # Fallback: Add after "build" script using sed
      sed -i '/"build":/a\    "verify": "pnpm build && node scripts/verify-circular-deps.mjs",' \
        "$service_dir/package.json"
      echo "   ✅ Deployed (using sed)"
    fi
  else
    echo "   ⏭️  Skipped: 'verify' script already exists"
    ((SKIPPED++))
  fi

  ((DEPLOYED++))
  echo ""

done < <(find "$PROJECT_ROOT/codebase/features" -type d -name "backend-api" -print0)

echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
echo "📊 Summary"
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
echo "   ✅ Deployed: $DEPLOYED"
echo "   ⏭️  Skipped:  $SKIPPED"
if [[ "$FAILED" -gt 0 ]]; then
  echo "   ❌ Failed:   $FAILED"
fi
echo ""

if [[ "$DRY_RUN" == true ]]; then
  echo "💡 Run without --dry-run to apply changes"
else
  echo "✅ Pattern deployed successfully!"
  echo ""
  echo "Next steps:"
  echo "  1. Test verification: cd <service> && pnpm verify"
  echo "  2. Add to CI/CD pipelines"
  echo "  3. Document in project CLAUDE.md"
fi