#!/usr/bin/env bash
# PikeOS → UniversalISOS rebrand
set -euo pipefail

BASE="/home/fabiorafaelcoutada/portugalfuturista/universalisos"
SRC="$BASE/src"
DST="$BASE/pikeos-rebrand"
LOGDIR="$BASE/rebrand-logs"
TIMESTAMP=$(date +%Y%m%d-%H%M%S)

mkdir -p "$DST" "$LOGDIR"

echo "============================================"
echo "  PikeOS → UniversalISOS Rebrand"
echo "  $(date)"
echo "============================================"

# ============================================
# PHASE 1: Copy source directories
# ============================================
echo ""
echo ">>> PHASE 1: Copying source directories..."
for dir in rpm scov share config cdk build; do
  echo "  Copying $dir..."
  if [[ "$dir" == "build" ]]; then
    # Exclude build logs (332 MB of historical CI output, not source)
    rsync -a --exclude='log/BUILD-LOGS/' "$SRC/$dir/" "$DST/$dir/"
  else
    rsync -a "$SRC/$dir/" "$DST/$dir/"
  fi
  echo "  ✓ $dir copied"
done

# Verify file counts
echo ""
echo "  File count verification:"
for dir in rpm scov share config cdk build; do
  SRC_COUNT=$(find "$SRC/$dir" -type f 2>/dev/null | wc -l)
  DST_COUNT=$(find "$DST/$dir" -type f 2>/dev/null | wc -l)
  if [[ "$dir" == "build" ]]; then
    # build has excluded BUILD-LOGS, so counts will differ
    echo "    $dir: src=$SRC_COUNT dst=$DST_COUNT (BUILD-LOGS excluded)"
  elif [[ "$SRC_COUNT" != "$DST_COUNT" ]]; then
    echo "    ⚠ MISMATCH: $dir src=$SRC_COUNT dst=$DST_COUNT"
  else
    echo "    ✓ $dir: $DST_COUNT files"
  fi
done

# ============================================
# PHASE 2: Rename files and directories containing 'pikeos'
# ============================================
echo ""
echo ">>> PHASE 2: Renaming files/directories with 'pikeos' in name..."

for dir in rpm scov share config cdk build; do
  echo "  Processing $dir..."

  # Rename files (bottom-up via -depth)
  find "$DST/$dir" -type f -iname '*pikeos*' -depth -print0 2>/dev/null | while IFS= read -r -d '' filepath; do
    dirpath=$(dirname "$filepath")
    base=$(basename "$filepath")
    new=$(echo "$base" | sed \
      -e 's/PIKEOS/UNIVERSALISOS/g' \
      -e 's/PikeOS/UniversalISOS/g' \
      -e 's/pikeos/universalisos/g')
    if [[ "$base" != "$new" ]]; then
      mv "$filepath" "$dirpath/$new"
    fi
  done

  # Rename directories (deepest first via -depth)
  find "$DST/$dir" -type d -iname '*pikeos*' -depth -print0 2>/dev/null | while IFS= read -r -d '' dirpath; do
    parent=$(dirname "$dirpath")
    base=$(basename "$dirpath")
    new=$(echo "$base" | sed \
      -e 's/PIKEOS/UNIVERSALISOS/g' \
      -e 's/PikeOS/UniversalISOS/g' \
      -e 's/pikeos/universalisos/g')
    if [[ "$base" != "$new" ]]; then
      mv "$dirpath" "$parent/$new"
    fi
  done

  echo "  ✓ $dir renames done"
done

# ============================================
# PHASE 3: Text content replacement (binary-safe)
# ============================================
echo ""
echo ">>> PHASE 3: Text content replacement..."

# Helper function: apply all PikeOS→UniversalISOS replacements to a file
apply_replacements() {
  sed -i \
    -e 's|/opt/pikeos-D5\.0|/opt/universalisos-D5.0|g' \
    -e 's|/opt/sbe-D3\.1|/opt/universalisos-sbe-D3.1|g' \
    -e 's/SYSGO AG/Portugal Futurista/g' \
    -e 's/SYSGO/Portugal Futurista/g' \
    -e 's/PIKEOS/UNIVERSALISOS/g' \
    -e 's/PikeOS/UniversalISOS/g' \
    -e 's/pikeos-/universalisos-/g' \
    -e 's/pikeos/universalisos/g' \
    -e 's/%_pikeos_/%_universalisos_/g' \
    "$1"
}

# Process all text files, skip BUILD-LOGS
FILECOUNT=0
while IFS= read -r -d '' f; do
  mime=$(file --mime-type -b "$f" 2>/dev/null)
  case "$mime" in
    text/*|application/json|application/xml|application/javascript|application/x-shellscript|application/x-perl|application/x-python*)
      apply_replacements "$f"
      FILECOUNT=$((FILECOUNT + 1))
      ;;
  esac
done < <(find "$DST" -type f -not -path "*/log/BUILD-LOGS/*" -print0)

echo "  Processed $FILECOUNT text files"

# Special: rename UOSX_ADT_ prefix in build/adt C source
if [[ -d "$DST/build/adt" ]]; then
  echo "  Renaming UOSX_ADT_ prefix in build/adt..."
  find "$DST/build/adt" -type f \( -name '*.c' -o -name '*.h' \) -print0 2>/dev/null | \
    xargs -0 sed -i 's/UOSX_ADT_/UOSX_UNIVERSALISOS_ADT_/g'
  echo "  ✓ ADT prefix renamed"
fi

# ============================================
# PHASE 4: Verification
# ============================================
echo ""
echo ">>> PHASE 4: Verification"

REPORT="$LOGDIR/verification-report-${TIMESTAMP}.txt"

{
  echo "=== PikeOS → UniversalISOS Rebrand Verification ==="
  echo "Date: $(date)"
  echo ""

  # Check remaining pikeos references
  REMAINING_PIKEOS=$(grep -rIl 'PikeOS\|pikeos\|PIKEOS' "$DST" 2>/dev/null | wc -l)
  echo "Files still containing pikeos/PikeOS/PIKEOS: $REMAINING_PIKEOS"
  if (( REMAINING_PIKEOS > 0 )); then
    echo "  Details (first 20):"
    grep -rIl 'PikeOS\|pikeos\|PIKEOS' "$DST" 2>/dev/null | head -20 | while read f; do
      echo "    $f"
    done
  fi

  # Check remaining SYSGO references
  REMAINING_SYSGO=$(grep -rIl 'SYSGO' "$DST" 2>/dev/null | wc -l)
  echo ""
  echo "Files still containing SYSGO: $REMAINING_SYSGO"
  if (( REMAINING_SYSGO > 0 )); then
    echo "  Details (first 20):"
    grep -rIl 'SYSGO' "$DST" 2>/dev/null | head -20 | while read f; do
      echo "    $f"
    done
  fi

  # Check old paths
  REMAINING_OLDPATH=$(grep -rIl '/opt/pikeos' "$DST" 2>/dev/null | wc -l)
  echo ""
  echo "Files still containing /opt/pikeos: $REMAINING_OLDPATH"

  REMAINING_SBE=$(grep -rIl '/opt/sbe-D3' "$DST" 2>/dev/null | wc -l)
  echo "Files still containing /opt/sbe-D3: $REMAINING_SBE"

  # Critical file checks
  echo ""
  echo "=== Critical file checks ==="
  if [[ -f "$DST/rpm/lib/rpm/macros" ]]; then
    if grep -q '/opt/universalisos-D5.0' "$DST/rpm/lib/rpm/macros"; then
      echo "  ✓ RPM macros: paths updated"
    else
      echo "  ✗ RPM macros: paths NOT updated"
    fi
    if grep -q 'PikeOS\|pikeos' "$DST/rpm/lib/rpm/macros"; then
      echo "  ✗ RPM macros: still contains pikeos"
    else
      echo "  ✓ RPM macros: pikeos removed"
    fi
  fi

  if [[ -f "$DST/config/rpm/common" ]]; then
    if grep -q 'Portugal Futurista' "$DST/config/rpm/common"; then
      echo "  ✓ config/rpm/common: vendor updated to Portugal Futurista"
    else
      echo "  ✗ config/rpm/common: vendor NOT updated"
    fi
  fi

  # File count summary
  echo ""
  echo "=== File count summary ==="
  for d in rpm scov share config cdk build; do
    count=$(find "$DST/$d" -type f 2>/dev/null | wc -l)
    size=$(du -sh "$DST/$d" 2>/dev/null | awk '{print $1}')
    echo "  $d: $count files, $size"
  done
  TOTAL=$(find "$DST" -type f | wc -l)
  TOTAL_SIZE=$(du -sh "$DST" | awk '{print $1}')
  echo "  TOTAL: $TOTAL files, $TOTAL_SIZE"

  # Symlink check
  echo ""
  echo "=== Symlink integrity ==="
  BROKEN=$(find "$DST" -type l ! -exec test -e {} \; -print 2>/dev/null | wc -l)
  echo "Broken symlinks: $BROKEN"
} 2>&1 | tee "$REPORT"

echo ""
echo "============================================"
echo "  Rebrand complete!"
echo "  Output: $DST"
echo "  Report: $REPORT"
echo "============================================"