#!/bin/bash
# ============================================================================
# add-anchor-links.sh (macOS + Linux compatible)
# Run from your project root: bash add-anchor-links.sh
# ============================================================================
set -e

echo "🔗 Adding anchor link support to all FD blocks..."
echo ""

# ── Step 1: Create shared anchorField ──────────────────────────────────────

mkdir -p src/fields

cat > src/fields/anchorField.ts << 'FIELDEOF'
import type { Field } from 'payload'

/**
 * Shared anchorId field for all FD blocks.
 * Allows editors to set an anchor link ID on any section,
 * enabling direct linking like /page#section-name
 *
 * Usage in block config:
 *   import { anchorField } from '@/fields/anchorField'
 *   fields: [ ...contentFields, anchorField ]
 *
 * Usage in block component:
 *   <section id={anchorId || undefined} ...>
 */
export const anchorField: Field = {
  name: 'anchorId',
  type: 'text',
  label: 'Ankarlänk-ID',
  admin: {
    description:
      'Valfritt. Används för att länka direkt till denna sektion, t.ex. "priser" ger /sida#priser. Använd bara små bokstäver, siffror och bindestreck.',
    position: 'sidebar',
  },
  validate: (value: unknown) => {
    if (!value) return true
    if (typeof value === 'string' && /^[a-z0-9][a-z0-9-]*$/.test(value)) return true
    return 'Använd bara små bokstäver (a-z), siffror (0-9) och bindestreck (-). Inga mellanslag.'
  },
}
FIELDEOF

echo "✅ Created src/fields/anchorField.ts"

# ── Step 2: Add anchorField to all block configs ───────────────────────────

BLOCKS=(
  FDHeroBlock
  FDAlternateHeroBlock
  FDTextBlock
  FDPricingCardBlock
  FDFaqBlock
  FDContactBlock
  FDContactFormBlock
  FDDataTableBlock
  FDCardGridBlock
  FDCtaSideImageBlock
  FDCtaBannerBlock
  FDCodeEmbedBlock
  FDFeatureAnnouncementBlock
  FDHeaderTextImageBlock
  FDServicesGridBlock
  FDServiceChooserBlock
  FDUspChecklistBlock
  FDUspTableBlock
  FDTechPropertiesBlock
  FDStatisticsBlock
  FDTestimonialBlock
  FDTeamBlock
  FDVideoBlock
  FDVpsCalculatorBlock
  FDWideCardBlock
  FDServiceCalculatorBlock
)

for BLOCK in "${BLOCKS[@]}"; do
  CONFIG="src/blocks/$BLOCK/config.ts"
  if [ ! -f "$CONFIG" ]; then
    echo "⚠️  Skipped $BLOCK — config not found"
    continue
  fi

  # Skip if already has anchorField
  if grep -q "anchorField" "$CONFIG"; then
    echo "⏭️  Skipped $BLOCK — anchorField already present"
    continue
  fi

  # Add import after the first line
  perl -i -pe 'if ($. == 1) { $_ .= "import { anchorField } from '\''\@/fields/anchorField'\''\n" }' "$CONFIG"

  # Add anchorField before the last "]," in the file
  perl -i -0pe 's/(  \],\n\})\s*$/    anchorField,\n$1/s' "$CONFIG"

  echo "✅ Updated $CONFIG"
done

echo ""

# ── Step 3: Add anchorId to all block components ──────────────────────────

echo "🔧 Updating block components..."

for BLOCK in "${BLOCKS[@]}"; do
  COMP="src/blocks/$BLOCK/Component.tsx"
  if [ ! -f "$COMP" ]; then
    echo "⚠️  Skipped $BLOCK component — not found"
    continue
  fi

  # Skip if already has anchorId
  if grep -q "anchorId" "$COMP"; then
    echo "⏭️  Skipped $BLOCK component — anchorId already present"
    continue
  fi

  # Add anchorId to destructured props: insert before "}) => {"
  perl -i -pe 's/\}\) => \{/  anchorId,\n}) => {/' "$COMP"

  # Add id={anchorId || undefined} to the first <section
  # Handle single-line: <section className=...
  perl -i -pe 'if (!$done && s/<section className/<section id={anchorId || undefined} className/) { $done=1 }' "$COMP"

  # Handle multi-line: <section alone on a line (like FDHeroBlock)
  if ! grep -q 'id={anchorId' "$COMP"; then
    perl -i -pe 'if (!$done && /^\s+<section\s*$/) { $done=1; s|<section|<section id={anchorId \|\| undefined}| }' "$COMP"
  fi

  echo "✅ Updated $COMP"
done

echo ""

# ── Step 4: Add smooth scrolling to globals.css ───────────────────────────

GLOBALS_CSS="src/app/(frontend)/globals.css"

if grep -q "scroll-behavior" "$GLOBALS_CSS" 2>/dev/null; then
  echo "⏭️  Smooth scroll already in globals.css"
else
  TMPFILE=$(mktemp)
  cat > "$TMPFILE" << 'CSSEOF'
/* Smooth scroll + header offset for anchor links */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

CSSEOF
  cat "$GLOBALS_CSS" >> "$TMPFILE"
  mv "$TMPFILE" "$GLOBALS_CSS"
  echo "✅ Added smooth scroll to globals.css"
fi

echo ""

# ── Step 5: Create BackToTop component ────────────────────────────────────

mkdir -p src/components/BackToTop

cat > src/components/BackToTop/index.tsx << 'BTEOF'
'use client'
import React, { useState, useEffect, useCallback } from 'react'
import { ChevronUpIcon } from 'lucide-react'

/**
 * Floating "back to top" button.
 * Appears after scrolling down 400px, smooth-scrolls to top on click.
 * Styled to match FD design system.
 */
export const BackToTop: React.FC = () => {
  const [visible, setVisible] = useState(false)

  useEffect(() => {
    const onScroll = () => {
      setVisible(window.scrollY > 400)
    }
    window.addEventListener('scroll', onScroll, { passive: true })
    return () => window.removeEventListener('scroll', onScroll)
  }, [])

  const scrollToTop = useCallback(() => {
    window.scrollTo({ top: 0, behavior: 'smooth' })
  }, [])

  return (
    <button
      onClick={scrollToTop}
      aria-label="Tillbaka till toppen"
      className={`
        fixed bottom-6 right-6 z-40
        w-11 h-11 rounded-full
        bg-fd-navy/80 backdrop-blur-sm
        text-white hover:text-fd-yellow
        border border-white/10 hover:border-fd-yellow/30
        shadow-lg hover:shadow-xl
        flex items-center justify-center
        transition-all duration-300 ease-in-out cursor-pointer
        ${visible
          ? 'opacity-100 translate-y-0 pointer-events-auto'
          : 'opacity-0 translate-y-4 pointer-events-none'
        }
      `}
    >
      <ChevronUpIcon className="w-5 h-5" />
    </button>
  )
}
BTEOF

echo "✅ Created src/components/BackToTop/index.tsx"

# ── Step 6: Add BackToTop to layout ───────────────────────────────────────

LAYOUT="src/app/(frontend)/layout.tsx"

if grep -q "BackToTop" "$LAYOUT" 2>/dev/null; then
  echo "⏭️  BackToTop already in layout"
else
  # Add import after Footer import
  perl -i -pe 'if (/import \{ Footer \}/) { $_ .= "import { BackToTop } from '\''\@/components/BackToTop'\''\n" }' "$LAYOUT"

  # Add component after <Footer />
  perl -i -pe 's|<Footer />|<Footer />\n          <BackToTop />|' "$LAYOUT"

  echo "✅ Added BackToTop to layout.tsx"
fi

echo ""
echo "════════════════════════════════════════════════════════════════"
echo "✅ All done! Now follow the deployment steps below."
echo "════════════════════════════════════════════════════════════════"
echo ""
echo "LOCAL:"
echo "  1. Review changes:  git diff"
echo "  2. Clean local migrations:"
echo "       rm -f src/migrations/2025*.ts src/migrations/2026*.ts"
echo "       echo 'export {}' > src/migrations/index.ts"
echo "  3. Commit and push:"
echo "       git add -A"
echo "       git commit -m 'feat: anchor links, smooth scroll, back-to-top'"
echo "       git push origin main"
echo ""
echo "SERVER:"
echo "  cd /var/www/fiberdirekt"
echo "  git pull origin main"
echo "  npm install"
echo "  npx payload generate:types"
echo "  npx payload migrate:create add-anchor-links"
echo "  npx payload migrate"
echo "  npm run build && pm2 restart fiberdirekt"
echo ""
echo "If migrate:create says 'no changes detected', skip migrate"
echo "steps and go straight to build. Block fields are stored as"
echo "JSON so new optional fields usually don't need SQL migration."
echo ""